First Heart Sound
نویسندگان
چکیده
منابع مشابه
Tricuspid component of first heart sound.
Right and left atrial pressures with a simultaneous external phonocardiogram and standard lead II electrocardiogram were recorded during routine cardiac catheterization in i5 patients. With one exception, the onset of the second (T1) major component of the first sound coincided with the peak of the right atrial c wavejust as the major left-sided component (M1), previously studied in this labora...
متن کاملThe loud first heart sound in left atrial myxoma.
The interrelation between the loudness of the first heart sound, the time interval from the Q wave to the onset of the first heart sound (QM1), and the mitral valve closure rate was studied in nine patients presenting with left atrial myxomata. In seven patients the first heart sound was loud preoperatively and was associated with delayed mitral valve closure. After removal of the myxoma the on...
متن کاملThe initial vibrations of the first heart sound.
The major component of the normal first heart sound is that due to valvular closure. Preceding this there occur low frequency, low amplitude vibrations commonly attributed to auricular systole. It has been shown in this study that such vibrations appear invariably even though the auricles are fibrillating, and in heart block when auricular systole is widely seperated from ventricular systole. I...
متن کاملThe atrial sound and the atrial component of the first heart sound.
In normal subjects inaudible presystolic vibrations can usually be demonstrated in a low frequency phonocardiogram. The relation of these vibrations to pathologically audible atrial sounds and the contribution of atrial action to the formation of the first heart sound are the subject of this paper. Several authors (Bramwell, 1935; Caeiro and Orias, 1937; Rappaport and Sprague, 1942; and Evans, ...
متن کاملThe first heart sound in complete heart block. Phono-echocardiographic correlations.
EDITORIALS: Exercise Electrocardlogrophy: Pitfalls and Solutions to Interpretation. Robert A. Bruce ........................... I SPECIAL ARTICLES: Appraisal of Antihypertensive Drug Therapy. Herbert Chasis ...................................................4 Rebuttal: Appraisal of Antihypertensive Drug Therapy. Edward D. Freis .........................................9 GEORGE C. GRIFFITH LECTU...
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ژورنال
عنوان ژورنال: Indian Journal of Cardiovascular Disease in Women WINCARS
سال: 2019
ISSN: 2455-7854
DOI: 10.1055/s-0039-1694856