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Asystole

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rhythm (ventricular fibrillation, or ventricular tachycardia), this does not necessarily improve the person's chances of survival to discharge from the hospital, though if the case was witnessed by a civilian, or better, a paramedic, who gave good CPR and cardiac drugs, this is an important confounding factor to be considered in certain select cases. Out-of-hospital survival rates (even with emergency intervention) are less than 2 percent.
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Survival rates in a cardiac arrest patient with asystole are much lower than a patient with a rhythm amenable to defibrillation; asystole is itself not a "shockable" rhythm. Even in those cases where an individual suffers a cardiac arrest with asystole and it is converted to a less severe shockable
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Neumar, R. W.; Otto, C. W.; Link, M. S.; Kronick, S. L.; Shuster, M.; Callaway, C. W.; Kudenchuk, P. J.; Ornato, J. P.; McNally, B.; Silvers, S. M.; Passman, R. S.; White, R. D.; Hess, E. P.; Tang, W.; Davis, D.; Sinz, E.; Morrison, L. J. (17 October 2010).
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ECC Committee, Subcommittees and Task Forces of the American Heart Association (December 2005). "2005 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care – Part 7.2: Management of Cardiac Arrest".
307:(when the chest is opened and the heart is manually compressed) is performed, and even then it is a small amount. After many emergency treatments have been applied but the heart is still unresponsive, it is time to consider pronouncing the patient 206:). Several interventions previously recommended—such as defibrillation (known to be ineffective on asystole, but previously performed in case the rhythm was actually very fine ventricular fibrillation) and intravenous 159:
Asystole should not be confused with very brief pauses below 3 seconds in the heart's electrical activity that can occur in certain less severe abnormal rhythms. Asystole is different from very fine occurrences of
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Kempton, Hannah; Vlok, Ruan; Thang, Christopher; Melhuish, Thomas; White, Leigh (March 2019). "Standard dose epinephrine versus placebo in out of hospital cardiac arrest: A systematic review and meta-analysis".
175:) usually present with a very poor prognosis. Asystole is found initially in only about 28% of cardiac arrest cases in hospitalized patients, but only 15% of these survive, even with the benefit of an 164:, though both have a poor prognosis, and untreated fine VF will lead to asystole. Faulty wiring, disconnection of electrodes and leads, and power disruptions should be ruled out. 311:. Even in the rare case that a rhythm reappears, if asystole has persisted for fifteen minutes or more, the brain will have been deprived of oxygen long enough to cause severe 584:"Part 8: Adult Advanced Cardiovascular Life Support: 2010 American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care" 210:—are no longer part of the routine protocols recommended by most major international bodies. 1 mg epinephrine by IV every 3–5 minutes is given for asystole. 1598: 453:
Baldzizhar, Aksana; Manuylova, Ekaterina; Marchenko, Roman; Kryvalap, Yury; Carey, Mary G. (September 2016). "Ventricular Tachycardias".
1239: 650:"Survival in Out-of-Hospital Cardiac Arrests with Initial Asystole or Pulseless Electrical Activity and Subsequent Shockable Rhythms" 929: 332: 1656: 973: 167:
Asystolic patients (as opposed to those with a "shockable rhythm" such as coarse or fine ventricular fibrillation, or unstable
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Kutsogiannis, Demetrios J.; Bagshaw, Sean M.; Laing, Bryce; Brindley, Peter G. (4 October 2011).
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Possible underlying causes, which may be treatable and reversible in certain cases, include the
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A rhythm strip showing two beats of normal sinus rhythm followed by an atrial beat and asystole
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during surgery necessitating stopping the heart). Asystole is the most serious form of
141: 137: 895: 796: 710: 600: 583: 1991: 1842: 1800: 1715: 1533: 1431: 1148: 1091: 989: 800: 762: 729: 679: 630: 605: 555: 519: 470: 274: 235: 132:"contraction") is the absence of ventricular contractions in the context of a lethal 100: 567: 1964: 1856: 1749: 1445: 792: 706: 669: 661: 595: 547: 509: 501: 490:"Predictors of survival after cardiac or respiratory arrest in critical care units" 462: 312: 133: 60: 1986: 1378: 1359: 1346: 1153: 1032: 907: 440: 624: 1979: 1887: 1785: 1777: 1675: 1185: 1178: 1165: 648:
Thomas, Andrew; Newgard, Craig; Fu, Rongwei; Zive, Dana; Daya, Mohamud (2013).
551: 378: 172: 145: 880: 466: 2006: 1969: 1880: 1015: 426: 268: 399: 344: 1901: 1875: 1719: 1667: 1340: 1316: 1263: 1122: 804: 683: 634: 609: 559: 523: 474: 315: 255: 203: 152:, asystole is the state of total cessation of electrical activity from the 1836: 1734: 1524: 1441: 1423: 1249: 1222: 1173: 1114: 319: 299:
While the heart is asystolic, there is no blood flow to the brain unless
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that is not producing a pulse, which can potentially be treated with
452: 947: 244: 240: 207: 697:"Medical Futility in Asystolic Out-of-Hospital Cardiac Arrest". 487: 1870: 1850: 1005: 875: 860: 623:
Jordan, Matthew; Lopez, Richard; Morrisonponce, Daphne (2022).
84: 81: 419: 264: 153: 136:(in contrast to an induced asystole on a cooled patient on a 39: 308: 63: 748: 72: 629:. Treasure Island, Florida (US): StatPearls Publishing. 622: 536: 728:. Dallas: American Heart Association. pp. 71–87. 580: 75: 69: 838: 749:
Barnes TG, Cummins RO, Field J, Hazinski MF (2003).
78: 647: 66: 937: 750: 820:"Asystole: Background, Pathophysiology, Etiology" 148:and is usually irreversible. Also referred to as 2004: 757:. Dallas: American Heart Association. pp.  742: 455:Critical Care Nursing Clinics of North America 923: 717: 775: 1240:Arrhythmogenic right ventricular dysplasia 930: 916: 540:The American Journal of Emergency Medicine 494:CMAJ: Canadian Medical Association Journal 110: 38: 673: 599: 513: 723: 2005: 974:Spontaneous coronary artery dissection 446: 911: 1298:Nonbacterial thrombotic endocarditis 817: 338:ECG lead showing asystole (flatline) 791:(24 Suppl): IV1–203 (7.2 IV58–66). 666:10.1016/j.resuscitation.2013.02.016 190:(CPR) combined with an intravenous 13: 1594:Accelerated idioventricular rhythm 397: 33:Cardiac flatline, asystolic arrest 14: 2039: 834: 797:10.1161/CIRCULATIONAHA.105.166550 711:10.1097/01.SA.0000318635.97636.a6 601:10.1161/CIRCULATIONAHA.110.970988 355: 343: 331: 59: 1279:Subacute bacterial endocarditis 818:Shah, Sandy (16 October 2021). 811: 753:ACLS for experienced providers 690: 641: 616: 574: 530: 481: 412: 391: 16:Medical condition of the heart 1: 1796:Pulseless electrical activity 1725:Multifocal atrial tachycardia 1599:Catecholaminergic polymorphic 726:ACLS: Principles And Practice 384: 188:cardiopulmonary resuscitation 705:(5): 261–262. October 2008. 7: 405:Online Etymology Dictionary 367: 324:persistent vegetative state 10: 2044: 1740:Wandering atrial pacemaker 1287:non-infective endocarditis 1228:Endocardial fibroelastosis 552:10.1016/j.ajem.2018.12.055 420: 202:", an example of which is 1957: 1900: 1818:hexaxial reference system 1809: 1776: 1763:Jervell and Lange-Nielsen 1748: 1706: 1665: 1642: 1616: 1584: 1542: 1523: 1422: 1408: 1308: 1293:Libman–Sacks endocarditis 1262: 1248: 1164: 1113: 1106: 1043: 998: 955: 946: 842: 594:(18_suppl_3): S729–S767. 467:10.1016/j.cnc.2016.04.004 99: 51: 46: 37: 29: 24: 2013:Medical aspects of death 1698:Ventricular fibrillation 969:Coronary artery aneurysm 699:Survey of Anesthesiology 362:Ventricular fibrillation 305:internal cardiac massage 217: 162:ventricular fibrillation 1975:Diastolic heart failure 1949:Athletic heart syndrome 1910:Ventricular hypertrophy 1644:Pre-excitation syndrome 1498:Left posterior fascicle 1023:Acute coronary syndrome 963:Coronary artery disease 436:A Greek–English Lexicon 186:Asystole is treated by 169:ventricular tachycardia 124:(New Latin, from Greek 1493:Left anterior fascicle 1273:infective endocarditis 1058:Hibernating myocardium 939:Cardiovascular disease 1657:Wolff–Parkinson–White 1617:Premature contraction 1515:Adams–Stokes syndrome 1218:Loeffler endocarditis 1028:Myocardial infarction 427:Liddell, Henry George 289:myocardial infarction 1824:Right axis deviation 1786:Sudden cardiac death 1144:Pericardial effusion 1087:Ventricular aneurysm 280:Tension pneumothorax 2018:Medical emergencies 1829:Left axis deviation 1686:Atrial fibrillation 1681:Ventricular flutter 1604:Torsades de pointes 1478:Bundle branch block 1437:Sick sinus syndrome 1223:Cardiac amyloidosis 1208:Tachycardia-induced 1063:Myocardial stunning 1011:Prinzmetal's angina 980:Coronary thrombosis 506:10.1503/cmaj.100034 374:Agonal heart rhythm 181:high blood pressure 177:intensive care unit 2028:Cardiac arrhythmia 1932:Atrial enlargement 1730:Pacemaker syndrome 1652:Lown–Ganong–Levine 1574:Junctional ectopic 1569:AV nodal reentrant 1075:Myocardial rupture 985:Coronary vasospasm 293:pulmonary embolism 142:general anesthesia 138:heart-lung machine 2000: 1999: 1992:Obstructive shock 1896: 1895: 1843:Short QT syndrome 1810:Other / ungrouped 1801:Sinoatrial arrest 1716:Ectopic pacemaker 1612: 1611: 1432:Sinus bradycardia 1404: 1403: 1400: 1399: 1149:Cardiac tamponade 1102: 1101: 1092:Dressler syndrome 990:Myocardial bridge 905: 904: 768:978-0-87493-424-3 735:978-0-87493-341-3 500:(14): 1589–1595. 398:Harper, Douglas. 275:Cardiac tamponade 128:"not, without" + 119: 118: 19:Medical condition 2035: 1965:Cardiac fibrosis 1857:T wave alternans 1750:Long QT syndrome 1544:Supraventricular 1540: 1539: 1473:Intraventricular 1420: 1419: 1260: 1259: 1111: 1110: 956:Coronary disease 953: 952: 932: 925: 918: 909: 908: 840: 839: 828: 827: 815: 809: 808: 779: 773: 772: 756: 746: 740: 739: 724:Mazur G (2004). 721: 715: 714: 694: 688: 687: 677: 660:(9): 1261–1266. 645: 639: 638: 620: 614: 613: 603: 578: 572: 571: 534: 528: 527: 517: 485: 479: 478: 450: 444: 423: 422: 416: 410: 409: 395: 359: 347: 335: 150:cardiac flatline 134:heart arrhythmia 115: 114: 91: 90: 87: 86: 83: 80: 77: 74: 71: 68: 65: 42: 22: 21: 2043: 2042: 2038: 2037: 2036: 2034: 2033: 2032: 2023:Causes of death 2003: 2002: 2001: 1996: 1987:Rheumatic fever 1953: 1892: 1805: 1772: 1744: 1702: 1661: 1638: 1608: 1580: 1527: 1519: 1413: 1396: 1304: 1253: 1244: 1160: 1154:Hemopericardium 1098: 1039: 1033:Unstable angina 1006:Angina pectoris 999:Active ischemia 994: 942: 936: 906: 901: 900: 851: 837: 832: 831: 816: 812: 780: 776: 769: 747: 743: 736: 722: 718: 696: 695: 691: 646: 642: 621: 617: 579: 575: 535: 531: 486: 482: 451: 447: 441:Perseus Project 417: 413: 396: 392: 387: 370: 363: 360: 351: 348: 339: 336: 318:, resulting in 220: 109: 95: 62: 58: 20: 17: 12: 11: 5: 2041: 2031: 2030: 2025: 2020: 2015: 1998: 1997: 1995: 1994: 1989: 1984: 1983: 1982: 1980:Cardiac asthma 1977: 1967: 1961: 1959: 1955: 1954: 1952: 1951: 1946: 1945: 1944: 1939: 1929: 1928: 1927: 1922: 1917: 1906: 1904: 1898: 1897: 1894: 1893: 1891: 1890: 1888:Strain pattern 1885: 1884: 1883: 1878: 1873: 1861: 1860: 1859: 1847: 1846: 1845: 1833: 1832: 1831: 1826: 1813: 1811: 1807: 1806: 1804: 1803: 1798: 1793: 1788: 1782: 1780: 1778:Cardiac arrest 1774: 1773: 1771: 1770: 1765: 1760: 1758:Andersen–Tawil 1754: 1752: 1746: 1745: 1743: 1742: 1737: 1732: 1727: 1722: 1712: 1710: 1704: 1703: 1701: 1700: 1695: 1694: 1693: 1683: 1678: 1676:Atrial flutter 1672: 1670: 1663: 1662: 1660: 1659: 1654: 1648: 1646: 1640: 1639: 1637: 1636: 1631: 1626: 1620: 1618: 1614: 1613: 1610: 1609: 1607: 1606: 1601: 1596: 1590: 1588: 1582: 1581: 1579: 1578: 1577: 1576: 1571: 1561: 1560: 1559: 1548: 1546: 1537: 1521: 1520: 1518: 1517: 1512: 1511: 1510: 1505: 1500: 1495: 1490: 1485: 1475: 1470: 1469: 1468: 1463: 1458: 1448: 1439: 1434: 1428: 1426: 1417: 1406: 1405: 1402: 1401: 1398: 1397: 1395: 1394: 1393: 1392: 1387: 1375: 1374: 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340: 337: 330: 297: 296: 282: 277: 272: 262: 253: 248: 238: 233: 219: 216: 173:defibrillation 146:cardiac arrest 117: 116: 103: 97: 96: 94: 93: 55: 53: 49: 48: 44: 43: 35: 34: 31: 27: 26: 18: 15: 9: 6: 4: 3: 2: 2040: 2029: 2026: 2024: 2021: 2019: 2016: 2014: 2011: 2010: 2008: 1993: 1990: 1988: 1985: 1981: 1978: 1976: 1973: 1972: 1971: 1970:Heart failure 1968: 1966: 1963: 1962: 1960: 1956: 1950: 1947: 1943: 1940: 1938: 1935: 1934: 1933: 1930: 1926: 1923: 1921: 1918: 1916: 1913: 1912: 1911: 1908: 1907: 1905: 1903: 1899: 1889: 1886: 1882: 1881:ST depression 1879: 1877: 1874: 1872: 1869: 1868: 1867: 1866: 1862: 1858: 1855: 1854: 1853: 1852: 1848: 1844: 1841: 1840: 1839: 1838: 1834: 1830: 1827: 1825: 1822: 1821: 1820: 1819: 1815: 1814: 1812: 1808: 1802: 1799: 1797: 1794: 1792: 1789: 1787: 1784: 1783: 1781: 1779: 1775: 1769: 1766: 1764: 1761: 1759: 1756: 1755: 1753: 1751: 1747: 1741: 1738: 1736: 1733: 1731: 1728: 1726: 1723: 1721: 1717: 1714: 1713: 1711: 1709: 1705: 1699: 1696: 1692: 1689: 1688: 1687: 1684: 1682: 1679: 1677: 1674: 1673: 1671: 1669: 1664: 1658: 1655: 1653: 1650: 1649: 1647: 1645: 1641: 1635: 1632: 1630: 1627: 1625: 1622: 1621: 1619: 1615: 1605: 1602: 1600: 1597: 1595: 1592: 1591: 1589: 1587: 1583: 1575: 1572: 1570: 1567: 1566: 1565: 1562: 1558: 1555: 1554: 1553: 1550: 1549: 1547: 1545: 1541: 1538: 1535: 1531: 1526: 1522: 1516: 1513: 1509: 1508:Trifascicular 1506: 1504: 1501: 1499: 1496: 1494: 1491: 1489: 1486: 1484: 1481: 1480: 1479: 1476: 1474: 1471: 1467: 1464: 1462: 1459: 1457: 1454: 1453: 1452: 1449: 1447: 1443: 1440: 1438: 1435: 1433: 1430: 1429: 1427: 1425: 1421: 1418: 1416: 1411: 1407: 1391: 1390:regurgitation 1388: 1386: 1383: 1382: 1381: 1380: 1376: 1372: 1371:regurgitation 1369: 1367: 1364: 1363: 1362: 1361: 1357: 1353: 1352:regurgitation 1350: 1348: 1345: 1344: 1343: 1342: 1338: 1334: 1333:regurgitation 1331: 1329: 1326: 1324: 1321: 1320: 1319: 1318: 1314: 1313: 1311: 1307: 1299: 1296: 1294: 1291: 1290: 1289: 1288: 1284: 1280: 1277: 1276: 1275: 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685: 681: 676: 671: 667: 663: 659: 655: 654:Resuscitation 651: 644: 636: 632: 628: 627: 619: 611: 607: 602: 597: 593: 589: 585: 577: 569: 565: 561: 557: 553: 549: 545: 541: 533: 525: 521: 516: 511: 507: 503: 499: 495: 491: 484: 476: 472: 468: 464: 460: 456: 449: 442: 438: 437: 432: 431:Scott, Robert 428: 424: 415: 407: 406: 401: 394: 390: 380: 377: 375: 372: 371: 358: 353: 346: 341: 334: 329: 328: 327: 325: 321: 317: 314: 310: 306: 302: 294: 290: 286: 283: 281: 278: 276: 273: 270: 269:drug overdose 266: 263: 261: 257: 254: 252: 249: 246: 242: 239: 237: 234: 232: 229: 228: 227: 225: 215: 211: 209: 205: 201: 197: 193: 189: 184: 182: 178: 174: 170: 165: 163: 157: 155: 151: 147: 143: 139: 135: 131: 127: 123: 113: 107: 104: 102: 98: 89: 57: 56: 54: 52:Pronunciation 50: 45: 41: 36: 32: 28: 23: 1902:Cardiomegaly 1876:ST elevation 1863: 1849: 1835: 1816: 1790: 1720:Ectopic beat 1668:fibrillation 1503:Bifascicular 1377: 1358: 1339: 1315: 1285: 1271: 1264:Endocarditis 1203:Hypertrophic 1137:Constrictive 1123:Pericarditis 1081: 1069: 1052: 885: 870: 855: 823: 813: 788: 784: 777: 752: 744: 725: 719: 702: 698: 692: 657: 653: 643: 625: 618: 591: 587: 576: 543: 539: 532: 497: 493: 483: 458: 454: 448: 434: 414: 403: 393: 316:brain damage 298: 256:Hyperkalemia 221: 212: 204:hypokalaemia 185: 166: 158: 149: 129: 121: 120: 1768:Romano–Ward 1735:Parasystole 1634:Ventricular 1586:Ventricular 1525:Tachycardia 1442:Heart block 1424:Bradycardia 1250:Endocardium 1213:Restrictive 1174:Myocarditis 1115:Pericardium 785:Circulation 588:Circulation 320:brain death 260:hypokalemia 251:Hypothermia 231:Hypovolemia 196:epinephrine 192:vasopressor 126:privative a 30:Other names 2007:Categories 1666:Flutter / 1629:Junctional 1564:Junctional 1557:Multifocal 1530:paroxysmal 1446:Sinoatrial 1415:arrhythmia 1410:Conduction 1166:Myocardium 400:"asystole" 385:References 285:Thrombosis 106:Cardiology 1925:Pulmonary 1708:Pacemaker 1379:pulmonary 1360:tricuspid 1196:Alcoholic 824:eMedicine 224:Hs and Ts 200:Hs and Ts 101:Specialty 1791:Asystole 1691:Familial 1385:stenosis 1366:stenosis 1347:stenosis 1328:stenosis 1323:prolapse 1045:Sequelae 948:Ischemia 805:16314375 684:23454257 635:28613616 626:Asystole 610:20956224 568:58580872 560:30658877 524:21844108 475:27484660 368:See also 350:Asystole 245:acidosis 241:Hydrogen 208:atropine 194:such as 122:Asystole 25:Asystole 1191:Dilated 1133:Chronic 941:(heart) 675:3947599 515:3185075 439:at the 421:συστολή 313:hypoxic 236:Hypoxia 130:systolē 1871:J wave 1624:Atrial 1552:Atrial 1341:aortic 1317:mitral 1309:Valves 1255:valves 1107:Layers 976:(SCAD) 866:MC82.2 803:  765:  732:  682:  672:  633:  608:  566:  558:  522:  512:  473:  267:(e.g. 265:Toxins 243:ions ( 108:  92: 1958:Other 1942:Right 1920:Right 1534:sinus 1483:Right 1233:Viral 1128:Acute 1082:weeks 1053:hours 965:(CAD) 896:427.5 881:I46.0 564:S2CID 218:Cause 154:heart 1937:Left 1915:Left 1532:and 1488:Left 1070:days 891:9-CM 801:PMID 763:ISBN 730:ISBN 680:PMID 631:PMID 606:PMID 556:PMID 520:PMID 471:PMID 309:dead 140:and 887:ICD 872:ICD 857:ICD 793:doi 789:112 759:3–5 707:doi 670:PMC 662:doi 596:doi 592:122 548:doi 510:PMC 502:doi 498:183 463:doi 322:or 303:or 301:CPR 291:or 258:or 2009:: 1865:ST 1837:QT 1718:/ 1466:3° 1461:2° 1456:1° 1451:AV 1444:: 1135:/ 894:: 879:: 876:10 864:: 861:11 822:. 799:. 787:. 761:. 703:52 701:. 678:. 668:. 658:84 656:. 652:. 604:. 590:. 586:. 562:. 554:. 544:37 542:. 518:. 508:. 496:. 492:. 469:. 459:28 457:. 433:; 429:; 425:. 402:. 326:. 226:. 183:. 85:iː 82:əl 1851:T 1536:) 1528:( 1412:/ 1252:/ 931:e 924:t 917:v 889:- 874:- 859:- 849:D 826:. 807:. 795:: 771:. 738:. 713:. 709:: 686:. 664:: 637:. 612:. 598:: 570:. 550:: 526:. 504:: 477:. 465:: 443:. 408:. 295:) 287:( 271:) 247:) 88:/ 79:t 76:s 73:ÉŞ 70:s 67:ˈ 64:ə 61:/

Index


/əˈsɪstəliː/
Specialty
Cardiology
Edit this on Wikidata
privative a
heart arrhythmia
heart-lung machine
general anesthesia
cardiac arrest
heart
ventricular fibrillation
ventricular tachycardia
defibrillation
intensive care unit
high blood pressure
cardiopulmonary resuscitation
vasopressor
epinephrine
Hs and Ts
hypokalaemia
atropine
Hs and Ts
Hypovolemia
Hypoxia
Hydrogen
acidosis
Hypothermia
Hyperkalemia
hypokalemia

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