Background: The 4th heart sound (S4) is commonly heard in patients with hypertrophic cardiomyopathy (HCM). The 3rd heart sound (S3) is also audible in HCM patients regardless of the presence or absence of heart failure. These extra heart sounds may be associated with myocardial fibrosis ...
心音：心脏收缩舒张时产生旳声音，可用耳或听诊器在胸壁听到，亦可用电子仪器统计下来（心音图）。可分为第一心音（S1）第二心音（S2）。（正常情况下均可听到）。第三心音(S3一般仅在小朋友及青少年可听到)，第四心音（S4正常情况极少听到）。从心脏产生旳心音经过组织旳介导传到胸壁表面，其中以骨传导最佳。第...
S3: An extra heart sound. S3 is a ventricular gallop, a low-pitched sound that can follow S2. S4: An extra heart sound. S4 is an atrial gallop, produced by the atria forcefully pushing blood into a stiff ventricle. Systole: The period between S1 and S2, when the ventricles contract. ...
BACKGROUND: The 4th heart sound (S4) is commonly heard in patients with hypertrophic cardiomyopathy (HCM). The 3rd heart sound (S3) is also audible in HCM patients regardless of the presence or absence of heart failure. These extra heart sounds may be associated with myocardial fibrosis because...
Heart sound indices such as S3/S4 strength and electromechanical activation time (EMAT) have been developed by phonocardiography, and attempts have been made to quantify heart sounds and use them for the diagnosis of heart diseases [[16], [17], [18]]. By using V3 and V4 ECG waveforms as...
第三心音(third heart sound,S3):出现在心室舒张早期,第二心音后0.12s-0.18s.第三心音的产生可能系心室舒张早期血流自心房突然冲人心室,使心室壁、乳头肌和腱索紧张、振动所致。 第三心音听诊特点:①音调低;②强度弱;③性质重浊而低钝;④持续时间较短(约0.04s);⑤在心尖部及其上方较清楚;⑥左侧卧位及呼气末...
例句 释义: 全部 更多例句筛选 1. S3 . The third heart sound (S3, or ventricular gallop) is low-pitched and best heard at the apex with the stethoscope bell. S3第三心音,又叫室性奔马律,低音调,用钟式听诊器在心尖处听得最清楚。 www.med126.com©...
Diastolic heart sounds (S3 and S4) and systolic time intervals have been particularly useful in this regard. Unfortunately, auscultation skills have declined considerably, and systolic time intervals have traditionally required carotid pulse tracings. Newer technology allows the automated detection of ...
第三心音(S3通常仅在儿童及青 少年可听到),第四心音(S4正常情况很少听到)。从心脏产生的心音 经过组织的介导传到胸壁表面,其中以骨传导最好。 - ①.第一心音 第一心音又称为S1,它产生的原因包括心室肌的收缩,房室瓣突然 关闭以及随后射血入主动脉等引起的振动。S1发生在心脏收缩期的开 始,音调低沉,持续...
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