Absent fourth heart sound as a marker of adverse events in hypertrophic cardiomyopathy with sinus rhythm.
Sakai C, Kawasaki T, Kawamata H, Harimoto K, Shiraishi H, Matoba S.
Ann Noninvasive Electrocardiol. 2022 May;27(3):e12932. doi: 10.1111/anec.12932. Epub 2022 Feb 11.
Importance of fourth heart sound and preserved left atrial function in wild-type transthyretin amyloidosis.
Ochi Y, Yamasaki N, Kubo T, Baba Y, Miyagawa K, Noguchi T, Hirota T, Hamada T, Kitaoka H.
ESC Heart Fail. 2024 Dec;11(6):4000-4008. doi: 10.1002/ehf2.14937. Epub 2024 Aug 1.
Auscultatory perception of the fourth heart sound: effects of interval form fourth to first sound (S4-S1) and aging.
Kino M, Shahamatpour A, Spodick DH.
Am J Cardiol. 1976 May;37(6):848-52. doi: 10.1016/0002-9149(76)90108-9.
Third and Fourth Heart Sounds and Myocardial Fibrosis in Hypertrophic Cardiomyopathy.
Sato Y, Kawasaki T, Honda S, Harimoto K, Miki S, Kamitani T, Shiraishi H, Matoba S.
Circ J. 2018 Jan 25;82(2):509-516. doi: 10.1253/circj.CJ-17-0650. Epub 2017 Sep 16.
Detection of the third and fourth heart sounds using Hilbert-Huang transform.
Tseng YL, Ko PY, Jaw FS.
Biomed Eng Online. 2012 Feb 14;11:8. doi: 10.1186/1475-925X-11-8.
"The Heart Sound Quintet": A Case Report of Right-Sided Heart Failure Due to Free Pulmonary Regurgitation Long After Intracardiac Repair of Tetralogy of Fallot.
Fujita H, Matsumoto K, Miwa K, Suzuki M, Suto M, Sakai J, Tanaka H, Hirata KI.
Am J Case Rep. 2020 Jul 17;21:e924636. doi: 10.12659/AJCR.924636.
A Case of Intensified Fourth and Second Heart Sounds Analyzed Using a Visualized Phonocardiogram during the 2024 Noto Peninsula Earthquake Recovery Efforts.
Yagi K, Ogawa S, Saito S, Iwazawa M, Tsuchiya T, Mizuta S, Yamasaki N, Muro T.
Intern Med. 2024 Dec 19. doi: 10.2169/internalmedicine.4345-24. Online ahead of print.
Correlation of an audible fourth heart sound with level of diastolic dysfunction.
Meyers DG, Porter IT, Schneider KA, Maksoud AR.
Am J Med Sci. 2009 Mar;337(3):165-8. doi: 10.1097/MAJ.0b013e318182ee55.
Relationship between accurate auscultation of the fourth heart sound and the level of physician experience.
Gupta S, Michaels AD.
Clin Cardiol. 2009 Feb;32(2):69-75. doi: 10.1002/clc.20431.
Association between phonocardiographic third and fourth heart sounds and objective measures of left ventricular function.
Marcus GM, Gerber IL, McKeown BH, Vessey JC, Jordan MV, Huddleston M, McCulloch CE, Foster E, Chatterjee K, Michaels AD.
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