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Antiphospholipid syndrome

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or pregnancy related) manifestation and persistent presence of one or more APS antibody. In the 2023 American College of Rheumatology and European League Against Rheumatism joint criteria they added heart related symptoms and low platelet levels as clinical criteria and changed some thresholds and specifics for antibody testing. However, all previously proposed research criteria are meant to create a standardized group of individuals with APS in order to increase accuracy in statistical analysis, so the criteria are not be representative of all individuals with APS. Thus, people who do not meet all of the criteria could still have APS.
51: 305:. Recurrent miscarriages associated with APS typically occur prior to 10th week of gestation, but miscarriage associated with APS can also occur after the 10th week of gestation. Certain causes must be excluded prior to attributing these complications to APS. Also, in pregnant individuals with lupus and antiphospholipid syndrome, antiphospholipid syndrome is responsible for most of the miscarriages in later trimesters. 635:). Lupus anticoagulant will also rarely cause a factor assay to give a result lower than 35 iu/dl (35%) whereas a specific factor antibody will rarely give a result higher than 10 iu/dl (10%). Monitoring IV anticoagulant therapy by the PTT ratio is compromised due to the effects of the lupus anticoagulant and in these situations is generally best performed using a chromogenic assay based on the inhibition of 368:. Anticardiolipin antibodies, β2glycoprotein 1, and lupus anticoagulant are antiphospholipid antibodies that are thought to clinically cause disease. These antibodies lead to blood clots and vascular disease in the presence (secondary APS) or absence (primary APS) of other diseases. While the exact functions of the antibodies are not known, the activation of the coagulation system is evident. 244:-related complications. While blood clots and pregnancy complications are the most common and diagnostic symptoms associated with APS, other organs and body parts may be affected like platelet levels, heart, kidneys, brain, and skin. Also, people with APS may have symptoms associated with other autoimmune diseases like 276:
Blood clots in patients with APS are often considered unprovoked, which means they occur in the absence of conditions that typically cause blood clots (i.e. prolonged sedentary behavior, immoblization, infection, cancer). However, a person can develop a provoked blood clot while having APS due to APS
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Because there are no agreed upon diagnostic criteria for APS, research classification criteria are sometimes used to aid in diagnosis. The Sapporo APS classification criteria (1998, published in 1999) were replaced by the Sydney criteria in 2006. The Sydney criteria requires one clinical (thrombosis
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have a greater association with thrombosis than those that target prothrombin. Anticardiolipin antibodies are associated with thrombosis at moderate to high titres (over 40 GPLU or MPLU). Patients with both lupus anticoagulant antibodies and moderate or high titre anticardiolipin antibodies show a
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forms a shield around negatively charged phospholipid molecules, which reduces the membrane's ability to participate in clotting. Thus, antibodies against protein S and anti-annexin A5 decrease protein C efficiency and increase phospholipid-dependent coagulation steps respectively, which leads to
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may be used as an alternative to warfarin, but not in people with APS who had a previous arterial blood clot or are "triple positive" with all types of antiphospholipid antibody (lupus anticoagulant, anticardiolipin antibody and anti-β2 glycoprotein I antibody). In people with arterial blood clot
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It is recommended to generally re-test people 12 weeks after the first positive test to confirm that it was correct, except for those who test positive during pregnancy. For that group, it is recommend to wait 3 months to re-test if possible. Re-testing is more nuanced if the person is taking an
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The presence of antiphospholipid antibodies may not indicate APS, which is why considering the symptoms present and retesting antibody levels is essential. People may be transiently positive, incorrectly positive, or incorrectly negative if they are tested when the following is occurring:
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Also, a history of previous blood clots in someone with APS increases the risk for certain pregnancy complications, such as death of the child, smaller sized baby, and blood clots during and after pregnancy. Outside of people with APS having an increased risk of blood clots and pregnancy
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Diagnosis of antiphospholipid syndrome is often made through the combination of symptoms and testing. Repeat antibody testing 12 weeks after discovering the presence of antiphospholipid antibodies (aPL) is needed to establish a diagnosis because false positives can occur.
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Karakasis P, Lefkou E, Pamporis K, Nevras V, Bougioukas KI, Haidich AB, Fragakis N (June 2023). "Risk of Subclinical Atherosclerosis in Patients with Antiphospholipid Syndrome and Subjects With Antiphospholipid Antibody Positivity: A Systematic Review and Meta-analysis".
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Treatment depends on a person's APS symptoms. Typically a medication that decreases the body's ability to form blood clots is given to prevent future clots. Low dose aspirin can be given to people who have APS antibodies but no symptoms, high risk individuals with
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While APS was previously categorized into primary and secondary APS based on the absence or presence of concurrent autoimmune disease respectively, the 16th International Congress on Antiphospholipid Antibodies Task Force categorizes APS into 6 categories:
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can experience a variety of symptoms depending on what blood vessel in the brain is affected. Symptoms include but are not limited to trouble speaking, loss of sensation, or weakness in one side of the face or body. Blood clots can also occur in the
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Diagnosis is made based on symptoms and testing, but sometimes research criteria are used to aid in diagnosis. The research criteria for definite APS requires one clinical event (i.e. thrombosis or pregnancy complication) and two positive
619:) is normally achieved by differentiating the effects of a lupus anticoagulant on factor assays from the effects of a specific coagulation factor antibody. The lupus anticoagulant will inhibit all the contact activation pathway factors ( 2001:
Asherson RA, Cervera R, de Groot PG, Erkan D, Boffa MC, Piette JC, et al. (July 2003). "Catastrophic antiphospholipid syndrome: international consensus statement on classification criteria and treatment guidelines".
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Miyakis S, Lockshin MD, Atsumi T, Branch DW, Brey RL, Cervera R, et al. (February 2006). "International consensus statement on an update of the classification criteria for definite antiphospholipid syndrome (APS)".
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Other risk stratification criteria for predicting blood clots and pregnancy complications have been proposed, such as the aPL Score and the Global APS score, but further data is needed to validate these tools.
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Sciascia S, Radin M, Cecchi I, Levy RA, Erkan D (July 2021). "16th International congress on antiphospholipid antibodies task force report on clinical manifestations of antiphospholipid syndrome".
2129:"Management of thrombotic and obstetric antiphospholipid syndrome: a systematic literature review informing the EULAR recommendations for the management of antiphospholipid syndrome in adults" 1952:
Wilson, W. A.; Gharavi, A. E.; Koike, T.; Lockshin, M. D.; Branch, D. W.; Piette, J. C.; Brey, R.; Derksen, R.; Harris, E. N.; Hughes, G. R.; Triplett, D. A.; Khamashta, M. A. (July 1999).
604:. The Scientific and Standardization Committee for lupus anticoagulant/antiphospholipid antibodies of the International Society on Thrombosis and Haemostasis no longer recommends the 2314:"Comparing the efficacy and safety of direct oral anticoagulants versus Vitamin K antagonists in patients with antiphospholipid syndrome: a systematic review and meta-analysis" 1739:
Islam MA, Alam F, Sasongko TH, Gan SH (2016). "Antiphospholipid Antibody-Mediated Thrombotic Mechanisms in Antiphospholipid Syndrome: Towards Pathophysiology-Based Treatment".
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less likely in pregnant women with APS. Women with recurrent miscarriages are often advised to take aspirin and to start low molecular weight heparin treatment after missing a
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Islam MA, Alam F, Kamal MA, Wong KK, Sasongko TH, Gan SH (2016). "'Non-Criteria' Neurologic Manifestations of Antiphospholipid Syndrome: A Hidden Kingdom to be Discovered".
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and APS antibodies but no symptoms of APS, and non-pregnant people who had APS during pregnancy. For those people with APS who have had a blood clot (venous or arterial),
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Barbhaiya M, Zuily S, Naden R, Hendry A, Manneville F, Amigo MC, et al. (October 2023). "The 2023 ACR/EULAR Antiphospholipid Syndrome Classification Criteria".
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although more research is needed to prove that these symptoms are indicative of APS. Cancer is also observed to occur at the same time in some patients with APS.
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Cheng C, Cheng GY, Denas G, Pengo V (July 2021). "Arterial thrombosis in antiphospholipid syndrome (APS): Clinical approach and treatment. A systematic review".
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In terms of catastropic APS, the International Consensus Statement is commonly used for diagnosis. Based on this statement, Definite CAPS diagnosis requires:
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Antiphospholipid syndrome was described in full in the 1980s, by E. Nigel Harris and Aziz Gharavi. They published the first papers in 1983. The syndrome was
17: 1954:"International consensus statement on preliminary classification criteria for definite antiphospholipid syndrome: report of an international workshop" 2291: 221:
and improve the prognosis of pregnancy. The anticoagulant medication used for treatment may differ depending on the circumstance, such as pregnancy.
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Islam MA, Alam F, Wong KK (May 2017). "Comorbid association of antiphospholipid antibodies and migraine: A systematic review and meta-analysis".
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For people with blood clot related APS, other conditions that can cause blood clots should be considered including but not limited to acquired
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viability, syncytialization and invasion, deranged production of hormones and signalling molecules by trophoblasts, as well as activation of
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According to a 2006 Sydney consensus statement, it is advisable to classify APS into one of the following categories for research purposes:
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infection. This occurs because the aPL bind to the lipids in the test and make it come out positive. A more specific test for syphilis,
3082: 2055: 2492: 1004: 2181:"Direct Oral Anticoagulants vs Vitamin K Antagonists in Patients With Antiphospholipid Syndromes: Meta-Analysis of Randomized Trials" 264:. People with a blot clot in their extremities may experience swelling, pain, or redness in the affected area. People experiencing a 3190: 2879: 1696:
Islam MA (August 2020). "Antiphospholipid antibodies and antiphospholipid syndrome in cancer: Uninvited guests in troubled times".
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antibodies. A patient with lupus anticoagulant antibodies on initial screening will typically have been found to have a prolonged
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Islam MA, Alam F, Gan SH, Cavestro C, Wong KK (March 2018). "Coexistence of antiphospholipid antibodies and cephalalgia".
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This is tested for by using two coagulation tests that are phospholipid-sensitive, due to the heterogeneous nature of the
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Kruger PC, Eikelboom JW, Douketis JD, Hankey GJ (June 2019). "Deep vein thrombosis: update on diagnosis and management".
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anticoagulant, which may require not taking the medication for a certain period of time or specifically timing the test.
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Hughes syndrome, aCL syndrome, anticardiolipin antibody syndrome, antiphospholipid syndrome, lupus anticoagulant syndrome
273:, which may cause trouble breathing or chest pain, and they can occur in the heart, which could lead to a heart attack. 3844: 3087: 1046:"Genetic risk factors in thrombotic primary antiphospholipid syndrome: A systematic review with bioinformatic analyses" 904: 762:. Genetic thrombophilia can coexist in some patients with APS. For people with pregnancy related APS, other causes of 2446:
Iuliano A, Galeazzi M, Sebastiani GD (September 2019). "Antiphospholipid syndrome's genetic and epigenetic aspects".
998: 325:. There are also associations between antiphospholipid antibodies and different neurologic manifestations including 3558: 3510: 3121: 3061: 2912: 1591: 990: 835:
Factors that increase likelihood of developing APS related future blood clots and pregnancy complications include:
588:(50:50 mixes with normal plasma are insensitive to all but the highest antibody levels). The PTT (plus 80:20 mix), 496:
In their report, they acknowledge that some individuals may qualify for more than one category based on symptoms.
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The lupus anticoagulant antibodies are those that show the closest association with thrombosis; those that target
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Tektonidou MG, Andreoli L, Limper M, Amoura Z, Cervera R, Costedoat-Chalumeau N, et al. (October 2019).
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should be considered before the diagnosis of APS, such as genetic, structural, or immune abnormalities.
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Rand JH (August 1998). "Antiphospholipid antibody syndrome: new insights on thrombogenic mechanisms".
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Ali M, van Os HJ, van der Weerd N, Schoones JW, Heymans MW, Kruyt ND, et al. (February 2022).
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Ruiz-Irastorza G, Crowther M, Branch W, Khamashta MA (October 2010). "Antiphospholipid syndrome".
2363:"Pregnancy outcome predictors in antiphospholipid syndrome: A systematic review and meta-analysis" 2179:
Khairani CD, Bejjani A, Piazza G, Jimenez D, Monreal M, Chatterjee S, et al. (January 2023).
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Devreese KM, de Groot PG, de Laat B, Erkan D, Favaloro EJ, Mackie I, et al. (November 2020).
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IIc: anti-β2 glycoprotein I IgG and/or IgM present alone in a titer greater than 99th percentile
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that are not caused by APS because APS can occur at the same time as other autoimmune diseases.
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In rare cases, APS leads to rapid organ failure due to generalised thrombosis; this is termed "
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Walter IJ, Klein Haneveld MJ, Lely AT, Bloemenkamp KW, Limper M, Kooiman J (October 2021).
1907:"Laboratory criteria for antiphospholipid syndrome: communication from the SSC of the ISTH" 1906: 1051: 605: 257: 2765: 402:
Other antibodies associated with APS include antibodies against protein S and annexin A5.
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complications, people with APS generally have increased risk of atherosclerotic disease.
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In pregnant people with only pregnancy related APS or only past blood clot related APS,
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has shown to increase the risk of future arterial blood clots and should not be used.
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Islam MA, Alam F, Cavestro C, Calcii C, Sasongko TH, Levy RA, Gan SH (August 2018).
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Also, patients who have certain antiphospholipid antibodies may have false positive
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Anti-ApoH and a subset of anti-cardiolipin antibodies bind to ApoH. ApoH inhibits
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Positive Options for Antiphospholipid Syndrome (APS): Self-Help and Treatment
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IIb: anti-cardiolipin IgG and/or IgM present alone in medium or high titers
926: 892: 640: 585: 376: 361: 210:" (CAPS or Asherson syndrome) and is associated with a high risk of death. 91: 2605: 1830: 3589: 3397: 3229: 3218: 2283: 816: 620: 616: 453: 449: 392: 384: 127: 2539: 492:
non-blood clot (i.e. kidney, low platelets, heart valve disease) related
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Factors associated with developing antiphospholipid syndrome include:
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Antiphospholipid antibody tests are either liquid-phase coagulation
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Evidence of small vessel blood clot in at least one organ or tissue
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Development of manifestations simultaneously or in less than a week
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of protein C, which is one of the body's own anti-clotting factors.
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10.1002/1529-0131(199907)42:7<1309::AID-ANR1>3.0.CO;2-F
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is believed to play a key role in the development of the disease.
163: 159: 650: 584:(PTT) that does not correct in an 80:20 mixture with normal human 3727: 3686: 2857: 1637:
Islam MA, Alam F, Kamal MA, Gan SH, Sasongko TH, Wong KK (2017).
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I: more than one laboratory criterion present in any combination;
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In pregnant women affected by APS, there is an increased risk of
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Tektonidou MG, Andreoli L, Limper M, Tincani A, Ward MM (2019).
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of the lower extremities, and the most common arterial event is
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with important regulatory function of coagulation (inactivates
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antibody from a specific coagulation factor inhibitor (e.g.:
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Triplett DA (November 2002). "Antiphospholipid antibodies".
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are used to prevent future clots. If warfarin is used, the
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no symptoms in the presence of antiphospholipid antibodies
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50 case studies to help you work out whether you have it.
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Understanding Hughes Syndrome: Case Studies for Patients
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Devreese KM, Ortel TL, Pengo V, de Laat B (April 2018).
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Antiphospholipid syndrome often requires treatment with
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Antiphospholipid syndrome can be primary or secondary.
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Immune disorder leading to increased risk of blood clots
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glycoprotein 1 dependent anticardiolipin antibodies. A
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results spaced at least three months apart that detect
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causing an increased risk of blood clot development.
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medication to reduce the risk of further episodes of
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Heparin and aspirin together appears to make 531:Laboratory confirmation of the presence of aPL. 229:Antiphospholipid syndrome is known for causing 1206: 1204: 682:may also be observed in a positive diagnosis. 552:(enzyme-linked immunosorbent assay) to detect 512:Blood clot in three or more organs or tissues 3198: 2873: 2185:Journal of the American College of Cardiology 2169: 1895: 1837: 1554: 1479:CNS & Neurological Disorders Drug Targets 1339: 1083: 2221: 1811:The American Journal of the Medical Sciences 1767: 1383: 1135: 2231:Dufrost V, Wahl D, Zuily S (January 2021). 1201: 847:, lupus anticoagulant, and anticardiolipin) 313:Other common findings that suggest APS are 3205: 3191: 2880: 2866: 850:moderate to high levels of an APS antibody 49: 2595: 2538: 2378: 2337: 2311: 2276: 2251: 2204: 2152: 2084: 2074: 1969: 1870: 1664: 1654: 1421: 1366: 1322: 745: 146:, and other symptoms like low platelets, 2646: 2312:Wu X, Cao S, Yu B, He T (October 2022). 1802: 1773: 3459: 483:blood clot (venous or arterial) related 14: 3850:Syndromes affecting the nervous system 3812: 2666: 2623: 2569: 2563: 959:IIa: lupus anticoagulant present alone 678:and positivity for antibodies against 571: 208:catastrophic antiphospholipid syndrome 3186: 2861: 1911:Journal of Thrombosis and Haemostasis 1859:Journal of Thrombosis and Haemostasis 1695: 1402:Journal of Thrombosis and Haemostasis 1349:Tong M, Viall CA, Chamley LW (2014). 1042: 991:Springer Science & Business Media 983:Hughes G, Khamashta MA (2013-07-01). 670:, which screens for the presence of β 224: 2318:Blood Coagulation & Fibrinolysis 1808: 986:Hughes Syndrome: Highways and Byways 499: 760:paroxysmal nocturnal hemoglobinuria 65:, as may be seen in APLA syndrome. 24: 2887: 2616: 944:), who brought together the team. 839:presence of all three antibodies ( 486:microvascular (small blood vessel) 395:, thus increasing its cleavage to 104:antiphospholipid antibody syndrome 25: 18:Antiphospholipid Antibody Syndrome 3866: 2692: 1753:10.2174/1381612822666160527160029 1491:10.2174/1871527315666160920122750 1011: 798:direct-acting oral anticoagulants 793:Direct-acting oral anticoagulants 708:, bilirubin, or fats are elevated 664:enzyme-linked immunosorbent assay 590:dilute Russell's viper venom time 308: 122:state caused by antiphospholipid 3559:platelet storage pool deficiency 3511:Heparin-induced thrombocytopenia 2497:American College of Rheumatology 2063:Annals of the Rheumatic Diseases 1823:10.1097/00000441-199808000-00009 1414:10.1111/j.1538-7836.2006.01753.x 1256:The Medical Journal of Australia 1007:from the original on 2017-03-31. 685: 349:Antiphospholipid syndrome is an 2439: 2417:10.1016/j.cpcardiol.2023.101672 2395: 2354: 2305: 2076:10.1136/annrheumdis-2019-215213 1994: 1945: 1732: 1710:10.1016/j.semcancer.2019.07.019 1689: 1643:Frontiers in Aging Neuroscience 1630: 1583: 1548: 1505: 1470: 1446: 865: 436:intrauterine growth restriction 295:intrauterine growth restriction 281:Pregnancy-related complications 144:pregnancy-related complications 3278:Activated protein C resistance 2405:Current Problems in Cardiology 1290: 1247: 1036: 976: 853:presence of IgG APS antibodies 813:ability to cause birth defects 535: 415:increased clotting potential. 251: 180:anti-apolipoprotein antibodies 13: 1: 2531:10.1016/S0140-6736(10)60709-X 1741:Current Pharmaceutical Design 969: 791:is kept between 2.0 and 3.0. 734:test, which aims to detect a 344: 3372:Trousseau sign of malignancy 2460:10.1016/j.autrev.2019.102352 2380:10.1016/j.autrev.2021.102901 2330:10.1097/mbc.0000000000001153 2253:10.1016/j.autrev.2020.102711 1608:10.1016/j.autrev.2018.01.025 1569:10.1016/j.autrev.2017.03.005 1315:10.1161/STROKEAHA.120.034040 1101:Arthritis & Rheumatology 1065:10.1016/j.autrev.2017.10.014 830: 805:low molecular weight heparin 769: 463: 201:systemic lupus erythematosus 7: 3692:Nonthrombocytopenic purpura 3268:Antithrombin III deficiency 3033:Anti-neutrophil cytoplasmic 3005:Anti-mitochondrial antibody 2493:"Antiphospholipid Syndrome" 2145:10.1136/rmdopen-2019-000924 1019:"Antiphospholipid syndrome" 947: 660:Anti-cardiolipin antibodies 592:, silica clotting time and 582:partial thromboplastin time 568:is currently under debate. 554:anti-cardiolipin antibodies 448:studies, include decreased 240:, in any organ system, and 184:anti-cardiolipin antibodies 162:of APS is still not clear, 10: 3871: 3647:Congenital afibrinogenemia 3551:Glanzmann's thrombasthenia 3149:Anti-citrullinated peptide 2570:Hughes GR (October 1983). 2197:10.1016/j.jacc.2022.10.008 1698:Seminars in Cancer Biology 1458:Johns Hopkins Lupus Center 1225:10.1016/j.blre.2020.100788 916: 63:thrombotic microangiopathy 3845:Syndromes affecting blood 3763:Gastrointestinal bleeding 3702: 3659: 3580: 3565:Hermansky–Pudlak syndrome 3524: 3466: 3452: 3380: 3342: 3334:Antiphospholipid syndrome 3315:Essential thrombocythemia 3255: 3248: 3225: 3159: 3096: 3070: 3021: 3003: 2940:Anti-topoisomerase/Scl-70 2895: 2846:Antiphospholipid syndrome 2820: 2707: 2588:10.1136/bmj.287.6399.1088 2016:10.1191/0961203303lu394oa 1355:Human Reproduction Update 1179:10.1177/09612033211020361 1043:Islam, Md Asiful (2018). 662:can be detected using an 655:glycoprotein 1 antibodies 596:(using a lupus-sensitive 100:Antiphospholipid syndrome 77: 57: 48: 40: 36:Antiphospholipid syndrome 35: 3733:Subconjunctival bleeding 3539:Bernard–Soulier syndrome 3502:Upshaw–Schulman syndrome 3476:Thrombocytopenic purpura 3305:Sticky platelet syndrome 1958:Arthritis and Rheumatism 1788:10.5858/2002-126-1424-AA 1656:10.3389/fnagi.2017.00250 1526:10.1177/0333102417694881 3723:Intracranial hemorrhage 3062:Anti-TPO/Antimicrosomal 2576:British Medical Journal 1023:Autoimmune Registry Inc 611:Distinguishing a lupus 430:The increased risks of 3835:Neurological disorders 3637:Factor XIII deficiency 3617:Hypoprothrombinemia/II 3612:von Willebrand disease 3570:Gray platelet syndrome 2649:Sticky Blood Explained 823:. In refractory cases 746:Differential diagnosis 3632:Factor XII deficiency 3622:Factor VII deficiency 3440:Renal vein thrombosis 3122:Anti-transglutaminase 2897:Anti-nuclear antibody 1454:"Lupus and Pregnancy" 1368:10.1093/humupd/dmu049 764:recurrent miscarriage 651:Anticardiolipin and β 432:recurrent miscarriage 287:recurrent miscarriage 158:. Although the exact 3388:Deep vein thrombosis 3283:Protein S deficiency 3273:Protein C deficiency 2448:Autoimmunity Reviews 2367:Autoimmunity Reviews 2240:Autoimmunity Reviews 1596:Autoimmunity Reviews 1557:Autoimmunity Reviews 1052:Autoimmunity Reviews 934:St. Thomas' Hospital 706:acute-phase proteins 606:kaolin clotting time 516:      258:deep vein thrombosis 61:showing an advanced 3830:Autoimmune diseases 3627:Factor X deficiency 3516:May–Hegglin anomaly 3293:Prothrombin G20210A 3172:Anti-apolipoprotein 3109:Lupus anticoagulant 2647:Thackray K (2003). 2582:(6399): 1088–1089. 2525:(9751): 1498–1509. 796:related APS, using 777:lupus erythematosus 643:in the presence of 602:lupus anticoagulant 578:lupus anticoagulant 572:Lupus anticoagulant 546:lupus anticoagulant 458:complement pathways 399:, its active form. 391:antibodies bind to 389:Lupus anticoagulant 319:heart valve disease 246:lupus erythematosus 197:autoimmune diseases 176:lupus anticoagulant 3753:Pulmonary hematoma 3660:Signs and symptoms 3435:Pulmonary embolism 3240:Bleeding diathesis 3160:Multiple locations 3050:Anti-smooth muscle 2821:External resources 2667:Hughes GR (2009). 1268:10.5694/mja2.50201 930:Graham R.V. Hughes 680:phosphatidylserine 676:low platelet count 668:immunological test 566:phosphatidylserine 351:autoimmune disease 323:livedo reticularis 315:low platelet count 225:Signs and symptoms 126:. APS can lead to 3807: 3806: 3803: 3802: 3655: 3654: 3642:Dysfibrinogenemia 3526:Platelet function 3448: 3447: 3327:Purpura fulminans 3180: 3179: 3167:Anti-phospholipid 3144:Rheumatoid factor 2855: 2854: 2682:978-1-84800-375-0 2658:978-1-898030-77-5 2639:978-0-89793-409-1 2624:Holden T (2003). 2069:(10): 1296–1304. 1923:10.1111/jth.13976 1872:10.1111/jth.15047 1865:(11): 2828–2839. 1782:(11): 1424–1429. 1747:(28): 4451–4469. 1485:(10): 1253–1265. 1113:10.1002/art.42624 1107:(10): 1687–1702. 874:Genetic Markers: 500:Research criteria 480:pregnancy related 97: 96: 30:Medical condition 16:(Redirected from 3862: 3855:1980s neologisms 3468:Thrombocytopenia 3464: 3463: 3457: 3456: 3413:Lowenberg's sign 3263:Clotting factors 3253: 3252: 3207: 3200: 3193: 3184: 3183: 3129:not autoantibody 3078:Anti-ganglioside 3013:Anti-cardiolipin 2882: 2875: 2868: 2859: 2858: 2705: 2704: 2686: 2662: 2643: 2610: 2609: 2599: 2567: 2561: 2560: 2542: 2514: 2508: 2507: 2505: 2503: 2489: 2480: 2479: 2443: 2437: 2436: 2399: 2393: 2392: 2382: 2358: 2352: 2351: 2341: 2309: 2303: 2302: 2300: 2299: 2280: 2274: 2273: 2255: 2237: 2228: 2219: 2218: 2208: 2176: 2167: 2166: 2156: 2124: 2107: 2106: 2088: 2078: 2060: 2051: 2036: 2035: 1998: 1992: 1991: 1973: 1964:(7): 1309–1311. 1949: 1943: 1942: 1902: 1893: 1892: 1874: 1850: 1835: 1834: 1806: 1800: 1799: 1771: 1765: 1764: 1736: 1730: 1729: 1693: 1687: 1686: 1668: 1658: 1634: 1628: 1627: 1587: 1581: 1580: 1552: 1546: 1545: 1509: 1503: 1502: 1474: 1468: 1467: 1465: 1464: 1450: 1444: 1443: 1425: 1396: 1381: 1380: 1370: 1346: 1337: 1336: 1326: 1294: 1288: 1287: 1251: 1245: 1244: 1208: 1199: 1198: 1173:(8): 1314–1326. 1162: 1133: 1132: 1096: 1081: 1080: 1048: 1040: 1034: 1033: 1031: 1029: 1015: 1009: 1008: 980: 905:Native Americans 704:states in which 594:prothrombin time 366:plasma membranes 53: 33: 32: 21: 3870: 3869: 3865: 3864: 3863: 3861: 3860: 3859: 3810: 3809: 3808: 3799: 3748:Hemopericardium 3698: 3651: 3582:Clotting factor 3576: 3520: 3444: 3393:Bancroft's sign 3376: 3367:Virchow's triad 3338: 3288:Factor V Leiden 3244: 3221: 3211: 3181: 3176: 3155: 3116:Coeliac disease 3092: 3066: 3017: 2999: 2981:Anti-centromere 2891: 2886: 2856: 2851: 2850: 2816: 2815: 2716: 2695: 2690: 2683: 2659: 2640: 2619: 2617:Further reading 2614: 2613: 2568: 2564: 2515: 2511: 2501: 2499: 2491: 2490: 2483: 2444: 2440: 2400: 2396: 2359: 2355: 2310: 2306: 2297: 2295: 2288:www.nice.org.uk 2282: 2281: 2277: 2235: 2229: 2222: 2177: 2170: 2125: 2110: 2058: 2052: 2039: 1999: 1995: 1950: 1946: 1903: 1896: 1851: 1838: 1807: 1803: 1772: 1768: 1737: 1733: 1694: 1690: 1635: 1631: 1588: 1584: 1553: 1549: 1510: 1506: 1475: 1471: 1462: 1460: 1452: 1451: 1447: 1397: 1384: 1347: 1340: 1295: 1291: 1262:(11): 516–524. 1252: 1248: 1209: 1202: 1163: 1136: 1097: 1084: 1041: 1037: 1027: 1025: 1017: 1016: 1012: 1001: 981: 977: 972: 950: 919: 868: 844: 833: 821:menstrual cycle 772: 748: 712:anticoagulation 688: 673: 657: 654: 614: 574: 561: 548:or solid phase 538: 502: 466: 423: 347: 311: 283: 254: 227: 120:hypercoagulable 31: 28: 23: 22: 15: 12: 11: 5: 3868: 3858: 3857: 3852: 3847: 3842: 3837: 3832: 3827: 3822: 3820:Coagulopathies 3805: 3804: 3801: 3800: 3798: 3797: 3796: 3795: 3787: 3786: 3785: 3780: 3775: 3773:Hemoperitoneum 3770: 3765: 3757: 3756: 3755: 3750: 3745: 3737: 3736: 3735: 3730: 3725: 3720: 3715: 3706: 3704: 3700: 3699: 3697: 3696: 3695: 3694: 3684: 3679: 3674: 3669: 3663: 3661: 3657: 3656: 3653: 3652: 3650: 3649: 3644: 3639: 3634: 3629: 3624: 3619: 3614: 3609: 3608: 3607: 3602: 3597: 3586: 3584: 3578: 3577: 3575: 3574: 3573: 3572: 3567: 3555: 3554: 3553: 3543: 3542: 3541: 3530: 3528: 3522: 3521: 3519: 3518: 3513: 3507: 3506: 3505: 3504: 3499: 3489: 3488: 3487: 3485:Evans syndrome 3472: 3470: 3461: 3454: 3450: 3449: 3446: 3445: 3443: 3442: 3437: 3432: 3431: 3430: 3425: 3420: 3418:Peabody's sign 3415: 3410: 3405: 3400: 3395: 3384: 3382: 3378: 3377: 3375: 3374: 3369: 3364: 3359: 3354: 3348: 3346: 3340: 3339: 3337: 3336: 3331: 3330: 3329: 3319: 3318: 3317: 3312: 3310:Thrombocytosis 3307: 3297: 3296: 3295: 3290: 3285: 3280: 3275: 3270: 3259: 3257: 3250: 3246: 3245: 3243: 3242: 3237: 3232: 3226: 3223: 3222: 3210: 3209: 3202: 3195: 3187: 3178: 3177: 3175: 3174: 3169: 3163: 3161: 3157: 3156: 3154: 3153: 3152: 3151: 3146: 3133: 3132: 3131: 3130: 3124: 3112: 3111: 3106: 3100: 3098: 3094: 3093: 3091: 3090: 3088:Anti-glutamate 3085: 3080: 3074: 3072: 3068: 3067: 3065: 3064: 3059: 3058: 3057: 3047: 3046: 3045: 3040: 3029: 3027: 3019: 3018: 3016: 3015: 3009: 3007: 3001: 3000: 2998: 2997: 2991: 2990: 2984: 2983: 2977: 2976: 2975: 2974: 2973: 2972: 2967: 2962: 2957: 2947: 2942: 2928: 2927: 2926: 2925: 2920: 2915: 2901: 2899: 2893: 2892: 2889:Autoantibodies 2885: 2884: 2877: 2870: 2862: 2853: 2852: 2849: 2848: 2837: 2825: 2824: 2822: 2818: 2817: 2814: 2813: 2802: 2791: 2780: 2768: 2753: 2733: 2717: 2712: 2711: 2709: 2708:Classification 2702: 2701: 2694: 2693:External links 2691: 2689: 2688: 2681: 2664: 2657: 2644: 2638: 2620: 2618: 2615: 2612: 2611: 2562: 2509: 2481: 2438: 2394: 2373:(10): 102901. 2353: 2324:(7): 389–401. 2304: 2275: 2220: 2168: 2139:(1): e000924. 2108: 2037: 2010:(7): 530–534. 1993: 1944: 1917:(4): 809–813. 1894: 1836: 1817:(2): 142–151. 1801: 1766: 1731: 1688: 1629: 1602:(8): 755–767. 1582: 1563:(5): 512–522. 1547: 1520:(3): 568–580. 1504: 1469: 1445: 1408:(2): 295–306. 1382: 1338: 1309:(2): 345–354. 1289: 1246: 1200: 1134: 1082: 1077:Science Direct 1059:(3): 226–243. 1035: 1010: 999: 974: 973: 971: 968: 967: 966: 963: 960: 957: 949: 946: 927:rheumatologist 918: 915: 914: 913: 910: 907: 886: 867: 864: 855: 854: 851: 848: 845:glycoprotein 1 842: 832: 829: 825:plasmapheresis 781:anticoagulants 771: 768: 747: 744: 724: 723: 709: 702: 699: 696: 687: 684: 671: 656: 652: 649: 613:anticoagulant 612: 598:thromboplastin 573: 570: 562:glycoprotein 1 559: 537: 534: 533: 532: 529: 523: 517: 501: 498: 494: 493: 490: 487: 484: 481: 478: 465: 462: 424:glycoprotein 1 421: 346: 343: 310: 309:Other symptoms 307: 282: 279: 253: 250: 226: 223: 148:kidney disease 95: 94: 81: 75: 74: 55: 54: 46: 45: 42: 38: 37: 29: 26: 9: 6: 4: 3: 2: 3867: 3856: 3853: 3851: 3848: 3846: 3843: 3841: 3838: 3836: 3833: 3831: 3828: 3826: 3823: 3821: 3818: 3817: 3815: 3794: 3791: 3790: 3788: 3784: 3783:Hematosalpinx 3781: 3779: 3776: 3774: 3771: 3769: 3766: 3764: 3761: 3760: 3758: 3754: 3751: 3749: 3746: 3744: 3741: 3740: 3738: 3734: 3731: 3729: 3726: 3724: 3721: 3719: 3716: 3714: 3711: 3710: 3708: 3707: 3705: 3701: 3693: 3690: 3689: 3688: 3685: 3683: 3680: 3678: 3675: 3673: 3670: 3668: 3665: 3664: 3662: 3658: 3648: 3645: 3643: 3640: 3638: 3635: 3633: 3630: 3628: 3625: 3623: 3620: 3618: 3615: 3613: 3610: 3606: 3603: 3601: 3598: 3596: 3593: 3592: 3591: 3588: 3587: 3585: 3583: 3579: 3571: 3568: 3566: 3563: 3562: 3561: 3560: 3556: 3552: 3549: 3548: 3547: 3544: 3540: 3537: 3536: 3535: 3532: 3531: 3529: 3527: 3523: 3517: 3514: 3512: 3509: 3508: 3503: 3500: 3498: 3495: 3494: 3493: 3490: 3486: 3483: 3482: 3481: 3477: 3474: 3473: 3471: 3469: 3465: 3462: 3458: 3455: 3451: 3441: 3438: 3436: 3433: 3429: 3426: 3424: 3421: 3419: 3416: 3414: 3411: 3409: 3408:Louvel's sign 3406: 3404: 3403:Lisker's sign 3401: 3399: 3396: 3394: 3391: 3390: 3389: 3386: 3385: 3383: 3379: 3373: 3370: 3368: 3365: 3363: 3360: 3358: 3355: 3353: 3352:Thrombophilia 3350: 3349: 3347: 3345: 3341: 3335: 3332: 3328: 3325: 3324: 3323: 3320: 3316: 3313: 3311: 3308: 3306: 3303: 3302: 3301: 3298: 3294: 3291: 3289: 3286: 3284: 3281: 3279: 3276: 3274: 3271: 3269: 3266: 3265: 3264: 3261: 3260: 3258: 3254: 3251: 3247: 3241: 3238: 3236: 3233: 3231: 3228: 3227: 3224: 3220: 3216: 3213:Disorders of 3208: 3203: 3201: 3196: 3194: 3189: 3188: 3185: 3173: 3170: 3168: 3165: 3164: 3162: 3158: 3150: 3147: 3145: 3142: 3141: 3140: 3139: 3135: 3134: 3128: 3125: 3123: 3120: 3119: 3117: 3114: 3113: 3110: 3107: 3105: 3104:Anti-thrombin 3102: 3101: 3099: 3097:Extracellular 3095: 3089: 3086: 3084: 3081: 3079: 3076: 3075: 3073: 3071:Cell membrane 3069: 3063: 3060: 3056: 3053: 3052: 3051: 3048: 3044: 3041: 3039: 3036: 3035: 3034: 3031: 3030: 3028: 3025: 3020: 3014: 3011: 3010: 3008: 3006: 3002: 2996: 2993: 2992: 2989: 2986: 2985: 2982: 2979: 2978: 2971: 2968: 2966: 2963: 2961: 2958: 2956: 2953: 2952: 2951: 2948: 2946: 2943: 2941: 2938: 2937: 2936: 2934: 2930: 2929: 2924: 2921: 2919: 2916: 2914: 2911: 2910: 2909: 2907: 2903: 2902: 2900: 2898: 2894: 2890: 2883: 2878: 2876: 2871: 2869: 2864: 2863: 2860: 2847: 2843: 2842: 2838: 2836: 2832: 2831: 2827: 2826: 2823: 2819: 2812: 2808: 2807: 2803: 2801: 2797: 2796: 2792: 2790: 2786: 2785: 2781: 2779:: ICD9 289.81 2778: 2777: 2773: 2769: 2767: 2763: 2762: 2758: 2754: 2751: 2747: 2743: 2742: 2738: 2734: 2732: 2728: 2727: 2723: 2719: 2718: 2715: 2710: 2706: 2700: 2697: 2696: 2684: 2678: 2674: 2670: 2665: 2660: 2654: 2651:. Braiswick. 2650: 2645: 2641: 2635: 2631: 2627: 2622: 2621: 2607: 2603: 2598: 2593: 2589: 2585: 2581: 2577: 2573: 2566: 2558: 2554: 2550: 2546: 2541: 2536: 2532: 2528: 2524: 2520: 2513: 2498: 2494: 2488: 2486: 2477: 2473: 2469: 2465: 2461: 2457: 2454:(9): 102352. 2453: 2449: 2442: 2434: 2430: 2426: 2422: 2418: 2414: 2411:(6): 101672. 2410: 2406: 2398: 2390: 2386: 2381: 2376: 2372: 2368: 2364: 2357: 2349: 2345: 2340: 2335: 2331: 2327: 2323: 2319: 2315: 2308: 2293: 2289: 2285: 2279: 2271: 2267: 2263: 2259: 2254: 2249: 2246:(1): 102711. 2245: 2241: 2234: 2227: 2225: 2216: 2212: 2207: 2202: 2198: 2194: 2190: 2186: 2182: 2175: 2173: 2164: 2160: 2155: 2150: 2146: 2142: 2138: 2134: 2130: 2123: 2121: 2119: 2117: 2115: 2113: 2104: 2100: 2096: 2092: 2087: 2082: 2077: 2072: 2068: 2064: 2057: 2050: 2048: 2046: 2044: 2042: 2033: 2029: 2025: 2021: 2017: 2013: 2009: 2005: 1997: 1989: 1985: 1981: 1977: 1972: 1967: 1963: 1959: 1955: 1948: 1940: 1936: 1932: 1928: 1924: 1920: 1916: 1912: 1908: 1901: 1899: 1890: 1886: 1882: 1878: 1873: 1868: 1864: 1860: 1856: 1849: 1847: 1845: 1843: 1841: 1832: 1828: 1824: 1820: 1816: 1812: 1805: 1797: 1793: 1789: 1785: 1781: 1777: 1770: 1762: 1758: 1754: 1750: 1746: 1742: 1735: 1727: 1723: 1719: 1715: 1711: 1707: 1703: 1699: 1692: 1684: 1680: 1676: 1672: 1667: 1662: 1657: 1652: 1648: 1644: 1640: 1633: 1625: 1621: 1617: 1613: 1609: 1605: 1601: 1597: 1593: 1586: 1578: 1574: 1570: 1566: 1562: 1558: 1551: 1543: 1539: 1535: 1531: 1527: 1523: 1519: 1515: 1508: 1500: 1496: 1492: 1488: 1484: 1480: 1473: 1459: 1455: 1449: 1441: 1437: 1433: 1429: 1424: 1419: 1415: 1411: 1407: 1403: 1395: 1393: 1391: 1389: 1387: 1378: 1374: 1369: 1364: 1361:(1): 97–118. 1360: 1356: 1352: 1345: 1343: 1334: 1330: 1325: 1320: 1316: 1312: 1308: 1304: 1300: 1293: 1285: 1281: 1277: 1273: 1269: 1265: 1261: 1257: 1250: 1242: 1238: 1234: 1230: 1226: 1222: 1218: 1214: 1213:Blood Reviews 1207: 1205: 1196: 1192: 1188: 1184: 1180: 1176: 1172: 1168: 1161: 1159: 1157: 1155: 1153: 1151: 1149: 1147: 1145: 1143: 1141: 1139: 1130: 1126: 1122: 1118: 1114: 1110: 1106: 1102: 1095: 1093: 1091: 1089: 1087: 1078: 1074: 1070: 1066: 1062: 1058: 1054: 1053: 1047: 1039: 1024: 1020: 1014: 1006: 1002: 1000:9781447151616 996: 992: 988: 987: 979: 975: 964: 961: 958: 955: 954: 953: 945: 943: 939: 935: 931: 928: 924: 911: 908: 906: 902: 898: 894: 890: 887: 885: 881: 877: 873: 872: 871: 863: 859: 852: 849: 846: 838: 837: 836: 828: 827:may be used. 826: 822: 818: 814: 810: 807:and low-dose 806: 801: 799: 794: 790: 786: 782: 778: 767: 765: 761: 757: 756:thrombophilia 753: 743: 741: 737: 733: 728: 721: 717: 713: 710: 707: 703: 700: 697: 694: 693: 692: 686:False results 683: 681: 677: 669: 665: 661: 648: 646: 642: 638: 634: 630: 626: 622: 618: 609: 607: 603: 599: 595: 591: 587: 583: 579: 569: 567: 563: 555: 551: 547: 543: 530: 528: 524: 522: 518: 515: 511: 510: 509: 506: 497: 491: 488: 485: 482: 479: 476: 475: 474: 470: 461: 459: 455: 451: 447: 446: 441: 440:preterm birth 437: 433: 428: 425: 416: 413: 409: 405: 400: 398: 394: 390: 386: 382: 378: 374: 369: 367: 363: 362:phospholipids 360: 357:that bind to 356: 352: 342: 340: 336: 332: 328: 324: 320: 316: 306: 304: 300: 299:pre-eclampsia 296: 292: 291:preterm birth 288: 278: 274: 272: 267: 263: 259: 249: 247: 243: 239: 236: 232: 222: 220: 216: 215:anticoagulant 211: 209: 204: 202: 198: 193: 190: 187: 185: 181: 177: 173: 167: 165: 161: 157: 153: 152:heart disease 149: 145: 141: 137: 133: 129: 125: 121: 117: 113: 109: 105: 101: 93: 89: 85: 82: 80: 76: 72: 68: 67:Kidney biopsy 64: 60: 56: 52: 47: 43: 39: 34: 19: 3825:Rheumatology 3793:Hemarthrosis 3557: 3545: 3533: 3423:Pratt's sign 3333: 3235:coagulopathy 3166: 3136: 3127:Anti-gliadin 2995:Anti-histone 2931: 2904: 2839: 2828: 2804: 2793: 2782: 2770: 2755: 2735: 2720: 2668: 2648: 2630:Hunter House 2625: 2579: 2575: 2565: 2540:2318/1609788 2522: 2518: 2512: 2500:. 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970:References 754:, genetic 701:blood clot 633:factor XII 544:to detect 412:Annexin A5 345:Mechanisms 219:thrombosis 199:, such as 172:blood test 134:) in both 132:thrombosis 124:antibodies 116:autoimmune 88:hematology 84:Immunology 59:Micrograph 3768:Hemobilia 3713:Epistaxis 3300:Platelets 3024:cytoplasm 2960:Anti-nRNP 2830:eMedicine 2476:198132495 2433:257197368 2270:226989043 2103:155101935 1980:0004-3591 1889:225955504 1726:198952872 1284:173995098 1241:229343584 1195:235215484 1129:263166505 897:Hispanics 884:HLA-DRw53 831:Prognosis 770:Treatment 698:pregnancy 695:infection 637:factor Xa 629:factor XI 625:factor IX 464:Diagnosis 408:co-factor 404:Protein S 381:Factor Va 373:protein C 303:eclampsia 242:pregnancy 182:, and/or 114:), is an 79:Specialty 71:PAS stain 3759:abdomen 3682:Petechia 3677:Hematoma 3667:Bleeding 3534:adhesion 3460:By cause 3453:Bleeding 3357:Thrombus 3256:By cause 3249:Clotting 3219:clotting 3215:bleeding 3083:Anti-GBM 3026:antibody 2945:Anti-Jo1 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Index

Antiphospholipid Antibody Syndrome

Micrograph
thrombotic microangiopathy
Kidney biopsy
PAS stain
Specialty
Immunology
hematology
rheumatology
autoimmune
hypercoagulable
antibodies
blood clots
thrombosis
arteries
veins
pregnancy-related complications
kidney disease
heart disease
rash
etiology
genetics
blood test
lupus anticoagulant
anti-apolipoprotein antibodies
anti-cardiolipin antibodies
autoimmune diseases
systemic lupus erythematosus
catastrophic antiphospholipid syndrome

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