Studies on the third heart sound
نویسندگان
چکیده
منابع مشابه
Origin of the third heart sound. I. Studies in dogs.
We studied 13 anesthetized dogs in which a third heart sound (S3) was repeatedly induced by hypoxemia plus fluid overload. A miniature accelerometer with a mass of about 1.1 g was applied at three levels--intact chest wall over cardiac apex, in the pericardium and on the epicardium--to record motion of the structures under observation as well as sound. Intraventricular pressure and sound were m...
متن کاملOrigin of the third heart sound.
We report noninvasive and invasive studies designed to clarify the mechanism of the third heart sound (S3) in humans. The noninvasive observations were made using a miniature accelerometer attached to the skin surface at the cardiac apex. In subjects with no S3, the tracings were either flat or showed very low undulations throughout diastole. Those with an S3, however, demonstrated a distinct r...
متن کاملMechanical correlates of the third heart sound.
In seven chronically instrumented conscious dogs, micromanometers measured left ventricular pressure, and ultrasonic dimension transducers measured left ventricular minor-axis diameter; the latter recording was filtered to examine data between 20 and 100 Hz. Acceptable external heart sounds were recorded with a phonocardiographic microphone in four of the seven dogs. With each dog sedated, intu...
متن کاملThe third heart sound for diagnosis of acute heart failure.
Dyspnea is a common presenting complaint in the emergency department (ED). Rapid identification of heart failure as the etiology leads to early implementation of targeted therapies. Although having only intermediate sensitivity, the S3 is a highly specific finding among older adults with heart failure. Identification of an S3 by routine auscultation can be problematic given the chaotic and nois...
متن کاملThird heart sound after mitral valve replacement.
Seven patients have been described who developed a third heart sound in association with a paravalvar leak around a Starr-Edwards mitral valve prosthesis. These patients had all had the mitral valve cusps, chordae tendineae, and part of the papillary muscles excised. The presence of a third heart sound in them supports the concept of Potain (I900) that the third heart sound arises by vibrations...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Japanese Circulation Journal
سال: 1971
ISSN: 0047-1828,1347-4839
DOI: 10.1253/jcj.35.1263