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Right ventricular hypertrophy

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patient regularly. Surgery is considered in more serious situations where the patient is severely symptomatic. Surgical options include either: replacement of the valve or repair of the valve (termed annuloplasty). When it comes to replacement, there is a choice between a bioprosthetic valve or a mechanical valve, depending upon the specific patient characteristics. Mechanical valve has greater durability, but requires anti-coagulation to reduce the risk of thrombosis. Treatment of pulmonary hypertension will depend on the specific cause of the pulmonary hypertension. On top of this, the following may also be considered: diuretic, oxygen and anti-coagulant therapy.
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from hypertrophy to failure is not well understood, and the best management approach involves reducing/minimising the risk factors of progression. Lifestyle changes can often help to reduce the risk of this progression. Lifestyle changes include: eating less salty food as salt consumption leads to greater fluid retention by the body; smoking cessation; avoiding excessive alcohol consumption as alcohol reduces the force of heart contractions. Once right ventricular hypertrophy progresses to right ventricular failure, the treatment becomes that of heart failure. Briefly, this includes the use of:
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levels increase due to increased sympathetic nervous system activity. Catecholamines can act on the alpha-adrenergic receptors and beta-adrenergic receptors which are G-protein coupled receptors. This binding initiates the same intracellular signalling pathways as angiotensin and endothelin. There is
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After a prolonged period, the right ventricle fails to adapt sufficiently to pump against increased right ventricle pressure, which is termed right ventricular failure. This right ventricular failure is the main complication of right ventricular hypertrophy. The mechanisms underlying the progression
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Right ventricular hypertrophy in itself is not the main issue, but what right ventricular hypertrophy represents is. Right ventricular hypertrophy is the intermediate stage between increased right ventricular pressure (in the early stages) and right ventricle failure (in the later stages). As such,
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Since the main causes of right ventricular hypertrophy is tricuspid regurgitation or pulmonary hypertension (discussed above), management involves treatment of these conditions. Tricuspid regurgitation is typically treated conservatively by aiming to treat the underlying cause and following up the
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can be used to directly visualise right ventricular wall thickness. The preferred technique is the trans-oesophageal approach giving a view of 4 chambers. The normal thickness of a right ventricular free wall ranges from 2-5 millimetres, with a value above 5 mm considered to be hypertrophic.
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management of right ventricular hypertrophy is about either preventing the development of right ventricular hypertrophy in the first place, or preventing the progression towards right ventricle failure. Right ventricular hypertrophy in itself has no (pharmacological) treatment.
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Right ventricular hypertrophy can be both a physiological and pathophysiological process. It becomes pathophysiological (damaging) when there is excessive hypertrophy. The pathophysiological process mainly occurs through aberrant signalling of the neuroendocrine hormones;
418:(ECG) to measure cardiac chamber hypertrophy is well established but since the left ventricular activity is dominant on the ECG a large degree of RVH is often required for any detectable changes. Nonetheless, the ECG is used to assist with the diagnosis of RVH. A 1014: 999: 65:. The right ventricle is one of the four chambers of the heart. It is located towards the right lower chamber of the heart and it receives Deoxygenated blood from the right upper chamber (right atrium) and pumps blood into the lungs. 354:(using angiotensin-converting enzyme inhibitors and angiotensin-receptor blockers) are a well-recognized clinical approach for reversing maladaptive cardiac hypertrophy independently of blood pressure. 68:
Since RVH is an enlargement of muscle it arises when the muscle is required to work harder. Therefore, the main causes of RVH are pathologies of systems related to the right ventricle such as the
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However, the American Heart Association recommended the use of additional diagnostic tests to diagnose RVH because no single criteria or set of criteria were considered sufficiently reliable.
253:, and other restrictive lung diseases. RVH often occurs as a result of these disorders. RVH is seen in 76% of patients with advanced COPD and 50% of patients with restrictive lung disease. 347:(PKC) is an intermediate molecule in the signalling pathway and mice lacking PKC shown resistance to heart failure compared to mice overexpressing PKC which shown heart dysfunction. 1764: 238:
results in an increase in right ventricular wall thickness. The worldwide incidence of PH is 4 per million people. RVH occurs in approximately 30% of these cases.
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area accentuated by inspiration may be present. On occasion, the systolic murmur can be transmitted and auscultated over the liver. Less typically,
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coupled receptors that act via internal signalling pathways. Through several intermediates, these pathways directly or indirectly increase
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On physical examination, the most prominent features are due to the development of right-sided heart failure. These can include a raised
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Braz, Julian; Gregory, Kimberley (15 February 2004). "PKC-α regulates cardiac contractility and propensity toward heart failure".
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study on 51 adult male patients concluded that anatomical RVH may be diagnosed using one or more of the following ECG criteria:
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Lehtonen, Jari (1988). "Electrocardiographic Criteria for the Diagnosis of Right Ventricular Hypertrophy Verified at Autopsy".
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Nakamura, Michinari; Sadoshima, Junichi (19 April 2018). "Mechanisms of physiological and pathological cardiac hypertrophy".
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Although presentations vary, individuals with right ventricular hypertrophy can experience symptoms that are associated with
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RVH usually occurs due to chronic lung disease or structural defects in the heart. One of the most common causes of RVH is
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The two main diagnostic tests used to confirm right ventricular hypertrophy are electrocardiography and echocardiography.
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Angiotensin-II and endothelin-1 are hormones that bind to the angiotensin (AT) and endothelin (ET) receptors. These are
1923: 1368: 202:, an accentuated second pulmonary sound (S2), a third heart sound termed a ‘right ventricular gallop’, as well as a 1905: 1393: 1378: 366:
also activation of cAMP and an increase in intracellular Ca2+ which leads to contractile dysfunction and fibrosis.
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fails to close properly, allowing backward flow of blood. Other structural defects which lead to RVH include
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Hormones are not the only cause of RVH. Hypertrophy can also be caused by mechanical forces, mTOR pathways,
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tries to compensate for this increased pressure by changing its shape and size. Hypertrophy of individual
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in the vessels supplying blood to the lungs. PH leads to increased pulmonary artery pressure. The
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RVH can be benign and have little impact on day-to-day life or it can lead to conditions such as
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RVH also occurs in response to structural defects in the heart. One common cause is
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of more than (or equal to) 110° (see hexaxial reference figure)
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on palpation. On inspection, patients may be chronically ill,
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Bhattacharya, Priyanka; Sharma, Sandeep (15 February 2019).
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may also be heard as a result of pulmonary insufficiency.
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This can subsequently induce necrotic cell death, 2123: 2066: 1975: 1942: 1914: 1872: 1831: 1808: 1782: 1750: 1708: 1689: 1588: 1574: 1474: 1428: 1414: 1330: 1279: 1272: 1209: 1164: 1121: 1112: 985: 915:"RV pressure overload: from hypertrophy to failure" 159:, which include cough, haemoptysis and hoarseness. 40: 21: 241:PH is broadly split into five categories by the 607: 605: 603: 601: 599: 597: 595: 593: 591: 155:People may rarely present with the symptoms of 135:Feeling of fullness in the upper abdominal area 343:This has been demonstrated in animal studies. 1089: 826:Journal of the American College of Cardiology 138:Discomfort or pain in the right upper abdomen 8: 641:"Idiopathic Pulmonary Arterial Hypertension" 291:Other risk factors for RVH include smoking, 1705: 1585: 1425: 1406:Arrhythmogenic right ventricular dysplasia 1276: 1118: 1096: 1082: 1074: 982: 908: 906: 694: 692: 690: 27: 18: 930: 886: 837: 663: 661: 332:(ROS) production causing accumulation in 670:"What is right ventricular hypertrophy?" 530: 284:, elevated fasting blood glucose, high 1140:Spontaneous coronary artery dissection 247:chronic obstructive pulmonary disease 7: 1464:Nonbacterial thrombotic endocarditis 564:Ibrahim, Bassem (12 December 2016). 1760:Accelerated idioventricular rhythm 14: 340:, and mitochondrial dysfunction. 570:e-Journal of Cardiology Practice 435:dominant over S-wave in V1 or V2 402:ECG showing right axis deviation 151:Racing heart beat (palpitations) 112:Difficulty breathing on exertion 1445:Subacute bacterial endocarditis 668:Johnson, Jon (16 August 2017). 614:"Right Ventricular Hypertrophy" 352:renin–angiotensin (RAAS) system 320:Angiotensin-II and endothelin-1 260:. This is a disorder where the 639:Oudiz, Ronald (21 June 2018). 280:. RVH is also associated with 83:, which has a poor prognosis. 1: 1962:Pulseless electrical activity 1891:Multifocal atrial tachycardia 1765:Catecholaminergic polymorphic 312:and the catecholamines (e.g. 148:) of the legs, ankles or feet 55:Right ventricular hypertrophy 36:Right ventricular hypertrophy 22:Right ventricular hypertrophy 913:van der Bruggen, C (2017). 566:"Right Ventricular Failure" 226:(PH), defined as increased 2200: 1906:Wandering atrial pacemaker 1453:non-infective endocarditis 1394:Endocardial fibroelastosis 839:10.1016/j.jacc.2008.12.015 479:Managing the complications 441:dominant over R-wave in V6 270:ventricular septal defects 1984:hexaxial reference system 1929:Jervell and Lange-Nielsen 1459:Libman–Sacks endocarditis 955:"Tricuspid Regurgitation" 820:Hancock, William (2009). 713:10.1038/s41569-018-0007-y 701:Nature Reviews Cardiology 394:Hexaxial reference system 243:World Health Organization 35: 26: 1864:Ventricular fibrillation 1135:Coronary artery aneurysm 539:"Pulmonary Hypertension" 274:pulmonary valve stenosis 129:General fatigue/lethargy 2141:Diastolic heart failure 2115:Athletic heart syndrome 2076:Ventricular hypertrophy 1810:Pre-excitation syndrome 1664:Left posterior fascicle 1189:Acute coronary syndrome 1129:Coronary artery disease 919:Cardiovascular Research 879:10.1136/hrt.2005.077875 330:reactive oxygen species 286:systolic blood pressure 258:tricuspid insufficiency 179:and a tender, enlarged 169:jugular venous pressure 1659:Left anterior fascicle 1439:infective endocarditis 1224:Hibernating myocardium 1105:Cardiovascular disease 799:10.1378/chest.93.4.839 403: 395: 224:pulmonary hypertension 98:pulmonary hypertension 1823:Wolff–Parkinson–White 1783:Premature contraction 1681:Adams–Stokes syndrome 1384:Loeffler endocarditis 1194:Myocardial infarction 861:Ho, Siew Yen (2006). 401: 393: 278:atrial septal defects 1990:Right axis deviation 1952:Sudden cardiac death 1310:Pericardial effusion 1253:Ventricular aneurysm 545:. NHS. 14 March 2017 427:Right axis deviation 1995:Left axis deviation 1852:Atrial fibrillation 1847:Ventricular flutter 1770:Torsades de pointes 1644:Bundle branch block 1603:Sick sinus syndrome 1389:Cardiac amyloidosis 1374:Tachycardia-induced 1229:Myocardial stunning 1177:Prinzmetal's angina 1146:Coronary thrombosis 410:Electrocardiography 266:tetralogy of Fallot 2098:Atrial enlargement 1896:Pacemaker syndrome 1818:Lown–Ganong–Levine 1740:Junctional ectopic 1735:AV nodal reentrant 1241:Myocardial rupture 1151:Coronary vasospasm 932:10.1093/cvr/cvx145 873:(Supp 1): i2–i13. 674:Medical News Today 514:Cardiac glycosides 470:Treating the cause 404: 396: 251:pulmonary embolism 87:Signs and symptoms 2166: 2165: 2158:Obstructive shock 2062: 2061: 2009:Short QT syndrome 1976:Other / ungrouped 1967:Sinoatrial arrest 1882:Ectopic pacemaker 1778: 1777: 1598:Sinus bradycardia 1570: 1569: 1566: 1565: 1315:Cardiac tamponade 1268: 1267: 1258:Dressler syndrome 1156:Myocardial bridge 1055: 1054: 961:. BMJ. March 2019 959:BMJ Best Practice 925:(12): 1423–1432. 416:electrocardiogram 282:abdominal obesity 191:and occasionally 177:parasternal heave 157:Ortner's syndrome 108:. These include: 104:and/or a reduced 52: 51: 16:Medical condition 2191: 2131:Cardiac fibrosis 2023:T wave alternans 1916:Long QT syndrome 1710:Supraventricular 1706: 1639:Intraventricular 1586: 1426: 1277: 1122:Coronary disease 1119: 1098: 1091: 1084: 1075: 983: 971: 970: 968: 966: 951: 945: 944: 934: 910: 901: 900: 890: 858: 852: 851: 841: 832:(11): 992–1002. 817: 811: 810: 782: 776: 775: 739: 733: 732: 696: 685: 684: 682: 680: 665: 656: 655: 653: 651: 636: 630: 629: 627: 625: 609: 586: 585: 583: 581: 561: 555: 554: 552: 550: 535: 454:Echocardiography 449:Echocardiography 345:Protein Kinase C 334:myocardial cells 212:diastolic murmur 141:Reduced appetite 76:or the airways. 70:pulmonary artery 31: 19: 2199: 2198: 2194: 2193: 2192: 2190: 2189: 2188: 2169: 2168: 2167: 2162: 2153:Rheumatic fever 2119: 2058: 1971: 1938: 1910: 1868: 1827: 1804: 1774: 1746: 1693: 1685: 1579: 1562: 1470: 1419: 1410: 1326: 1320:Hemopericardium 1264: 1205: 1199:Unstable angina 1172:Angina pectoris 1165:Active ischemia 1160: 1108: 1102: 1071: 1056: 1051: 1050: 994: 980: 975: 974: 964: 962: 953: 952: 948: 912: 911: 904: 860: 859: 855: 819: 818: 814: 784: 783: 779: 744:Nature Medicine 741: 740: 736: 698: 697: 688: 678: 676: 667: 666: 659: 649: 647: 638: 637: 633: 623: 621: 611: 610: 589: 579: 577: 563: 562: 558: 548: 546: 537: 536: 532: 527: 481: 472: 463: 451: 412: 388: 372: 360: 322: 301: 299:Pathophysiology 262:tricuspid valve 232:right ventricle 220: 204:systolic murmur 165: 94: 89: 74:tricuspid valve 63:right ventricle 17: 12: 11: 5: 2197: 2195: 2187: 2186: 2184:Heart diseases 2181: 2171: 2170: 2164: 2163: 2161: 2160: 2155: 2150: 2149: 2148: 2146:Cardiac asthma 2143: 2133: 2127: 2125: 2121: 2120: 2118: 2117: 2112: 2111: 2110: 2105: 2095: 2094: 2093: 2088: 2083: 2072: 2070: 2064: 2063: 2060: 2059: 2057: 2056: 2054:Strain pattern 2051: 2050: 2049: 2044: 2039: 2027: 2026: 2025: 2013: 2012: 2011: 1999: 1998: 1997: 1992: 1979: 1977: 1973: 1972: 1970: 1969: 1964: 1959: 1954: 1948: 1946: 1944:Cardiac arrest 1940: 1939: 1937: 1936: 1931: 1926: 1924:Andersen–Tawil 1920: 1918: 1912: 1911: 1909: 1908: 1903: 1898: 1893: 1888: 1878: 1876: 1870: 1869: 1867: 1866: 1861: 1860: 1859: 1849: 1844: 1842:Atrial flutter 1838: 1836: 1829: 1828: 1826: 1825: 1820: 1814: 1812: 1806: 1805: 1803: 1802: 1797: 1792: 1786: 1784: 1780: 1779: 1776: 1775: 1773: 1772: 1767: 1762: 1756: 1754: 1748: 1747: 1745: 1744: 1743: 1742: 1737: 1727: 1726: 1725: 1714: 1712: 1703: 1687: 1686: 1684: 1683: 1678: 1677: 1676: 1671: 1666: 1661: 1656: 1651: 1641: 1636: 1635: 1634: 1629: 1624: 1614: 1605: 1600: 1594: 1592: 1583: 1572: 1571: 1568: 1567: 1564: 1563: 1561: 1560: 1559: 1558: 1553: 1541: 1540: 1539: 1534: 1522: 1521: 1520: 1515: 1503: 1502: 1501: 1496: 1491: 1478: 1476: 1472: 1471: 1469: 1468: 1467: 1466: 1461: 1449: 1448: 1447: 1434: 1432: 1423: 1412: 1411: 1409: 1408: 1403: 1402: 1401: 1396: 1391: 1386: 1381: 1376: 1371: 1366: 1365: 1364: 1352:Cardiomyopathy 1349: 1348: 1347: 1345:Chagas disease 1336: 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output 93: 90: 88: 85: 50: 49: 44: 38: 37: 33: 32: 24: 23: 15: 13: 10: 9: 6: 4: 3: 2: 2196: 2185: 2182: 2180: 2177: 2176: 2174: 2159: 2156: 2154: 2151: 2147: 2144: 2142: 2139: 2138: 2137: 2136:Heart failure 2134: 2132: 2129: 2128: 2126: 2122: 2116: 2113: 2109: 2106: 2104: 2101: 2100: 2099: 2096: 2092: 2089: 2087: 2084: 2082: 2079: 2078: 2077: 2074: 2073: 2071: 2069: 2065: 2055: 2052: 2048: 2047:ST depression 2045: 2043: 2040: 2038: 2035: 2034: 2033: 2032: 2028: 2024: 2021: 2020: 2019: 2018: 2014: 2010: 2007: 2006: 2005: 2004: 2000: 1996: 1993: 1991: 1988: 1987: 1986: 1985: 1981: 1980: 1978: 1974: 1968: 1965: 1963: 1960: 1958: 1955: 1953: 1950: 1949: 1947: 1945: 1941: 1935: 1932: 1930: 1927: 1925: 1922: 1921: 1919: 1917: 1913: 1907: 1904: 1902: 1899: 1897: 1894: 1892: 1889: 1887: 1883: 1880: 1879: 1877: 1875: 1871: 1865: 1862: 1858: 1855: 1854: 1853: 1850: 1848: 1845: 1843: 1840: 1839: 1837: 1835: 1830: 1824: 1821: 1819: 1816: 1815: 1813: 1811: 1807: 1801: 1798: 1796: 1793: 1791: 1788: 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804: 800: 796: 793:(4): 839–42. 792: 788: 781: 778: 773: 769: 765: 761: 757: 753: 749: 745: 738: 735: 730: 726: 722: 718: 714: 710: 706: 702: 695: 693: 691: 687: 675: 671: 664: 662: 658: 646: 642: 635: 632: 619: 615: 608: 606: 604: 602: 600: 598: 596: 594: 592: 588: 575: 571: 567: 560: 557: 544: 540: 534: 531: 524: 520: 517: 515: 512: 510: 507: 505: 502: 500: 499:Beta Blockers 497: 495: 492: 490: 487: 486: 485: 478: 476: 469: 467: 460: 458: 455: 448: 446: 440: 437: 434: 431: 428: 425: 424: 423: 421: 417: 409: 407: 400: 392: 385: 383: 381: 377: 369: 367: 364: 357: 355: 353: 348: 346: 341: 339: 335: 331: 327: 319: 317: 315: 314:noradrenaline 311: 307: 298: 296: 294: 289: 287: 283: 279: 275: 271: 267: 263: 259: 254: 252: 248: 244: 239: 237: 233: 229: 225: 217: 215: 213: 209: 205: 201: 196: 194: 190: 186: 182: 178: 174: 170: 162: 160: 158: 150: 147: 143: 140: 137: 134: 131: 128: 126:) on exertion 125: 121: 119:) on exertion 118: 114: 111: 110: 109: 107: 103: 102:heart failure 99: 91: 86: 84: 82: 81:heart failure 77: 75: 71: 66: 64: 60: 56: 48: 45: 43: 39: 34: 30: 25: 20: 2179:Cardiomegaly 2085: 2068:Cardiomegaly 2042:ST elevation 2029: 2015: 2001: 1982: 1886:Ectopic beat 1834:fibrillation 1669:Bifascicular 1543: 1524: 1505: 1481: 1451: 1437: 1430:Endocarditis 1369:Hypertrophic 1303:Constrictive 1289:Pericarditis 1247: 1235: 1218: 1070: 1059: 1039: 1028: 1013: 998: 963:. 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Retrieved 542: 533: 519:Vasodilators 482: 473: 464: 452: 444: 413: 405: 380:immune cells 376:nitric oxide 373: 361: 349: 342: 323: 310:endothelin-1 302: 290: 255: 240: 221: 200:auscultation 197: 166: 154: 115:Chest pain ( 95: 78: 67: 58: 54: 53: 1934:Romano–Ward 1901:Parasystole 1800:Ventricular 1752:Ventricular 1691:Tachycardia 1608:Heart block 1590:Bradycardia 1416:Endocardium 1379:Restrictive 1340:Myocarditis 1281:Pericardium 509:Antagonists 504:Aldosterone 420:post mortem 414:The use of 293:sleep apnea 2173:Categories 1832:Flutter / 1795:Junctional 1730:Junctional 1723:Multifocal 1696:paroxysmal 1612:Sinoatrial 1581:arrhythmia 1576:Conduction 1332:Myocardium 1041:DiseasesDB 618:StatPearls 525:References 144:Swelling ( 122:Fainting ( 47:Cardiology 2091:Pulmonary 1874:Pacemaker 1545:pulmonary 1526:tricuspid 1362:Alcoholic 489:Diuretics 461:Treatment 386:Diagnosis 326:G-protein 208:tricuspid 206:over the 193:jaundiced 189:cachectic 132:Dizziness 42:Specialty 1957:Asystole 1857:Familial 1551:stenosis 1532:stenosis 1513:stenosis 1494:stenosis 1489:prolapse 1211:Sequelae 1114:Ischemia 965:23 March 941:28957530 897:16543598 848:19281932 764:14966518 721:29674714 679:23 March 650:23 March 645:Medscape 624:23 March 580:23 March 549:23 March 338:fibrosis 249:(COPD), 236:myocytes 185:cyanotic 92:Symptoms 1357:Dilated 1299:Chronic 1107:(heart) 1035:D017380 888:1860731 807:2964996 772:8812202 729:4975072 175:, left 173:ascites 124:syncope 2037:J wave 1790:Atrial 1718:Atrial 1507:aortic 1483:mitral 1475:Valves 1421:valves 1273:Layers 1142:(SCAD) 1066:CHORUS 939:  895:  885:  846:  805:  770:  762:  727:  719:  620:. NCBI 543:nhs.uk 494:3 ACEi 439:S-wave 433:R-wave 370:Others 276:, and 218:Causes 146:oedema 117:angina 72:, the 2124:Other 2108:Right 2086:Right 1700:sinus 1649:Right 1399:Viral 1294:Acute 1248:weeks 1219:hours 1131:(CAD) 1061:02004 1046:11623 1024:429.3 1009:I51.7 867:Heart 787:Chest 768:S2CID 725:S2CID 181:liver 163:Signs 2103:Left 2081:Left 1698:and 1654:Left 1236:days 1030:MeSH 1019:9-CM 967:2019 937:PMID 893:PMID 844:PMID 803:PMID 760:PMID 717:PMID 681:2019 652:2019 626:2019 582:2019 576:(32) 551:2019 378:and 1064:at 1015:ICD 1000:ICD 927:doi 923:113 883:PMC 875:doi 834:doi 795:doi 752:doi 709:doi 316:). 198:On 59:RVH 2175:: 2031:ST 2003:QT 1884:/ 1632:3° 1627:2° 1622:1° 1617:AV 1610:: 1301:/ 1044:: 1033:: 1022:: 1007:: 1004:10 957:. 935:. 921:. 917:. 905:^ 891:. 881:. 871:92 869:. 865:. 842:. 830:53 828:. 824:. 801:. 791:93 789:. 766:. 758:. 748:10 746:. 723:. 715:. 705:15 703:. 689:^ 672:. 660:^ 643:. 616:. 590:^ 574:14 572:. 568:. 541:. 308:, 272:, 268:, 195:. 187:, 171:, 100:, 2017:T 1702:) 1694:( 1578:/ 1418:/ 1097:e 1090:t 1083:v 1017:- 1002:- 992:D 969:. 943:. 929:: 899:. 877:: 850:. 836:: 809:. 797:: 774:. 754:: 731:. 711:: 683:. 654:. 628:. 584:. 553:. 57:(

Index


Specialty
Cardiology
right ventricle
pulmonary artery
tricuspid valve
heart failure
pulmonary hypertension
heart failure
cardiac output
angina
syncope
oedema
Ortner's syndrome
jugular venous pressure
ascites
parasternal heave
liver
cyanotic
cachectic
jaundiced
auscultation
systolic murmur
tricuspid
diastolic murmur
pulmonary hypertension
blood pressure
right ventricle
myocytes
World Health Organization

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