Results 281 to 290 of about 3,079,923 (316)
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The Third Heart Sound

Southern Medical Journal, 1999
In the current era of cost-effective delivery of health care, it is particularly timely to carefully reevaluate the clinical utility of selected physical signs. The third heart sound (S3) is one such sign that is the focus of the current review.I conducted a computerized MEDLINE search of articles related to S3 published since 1966.
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The second heart sound

American Heart Journal, 1962
Abstract The second heart sound was studied in 80 patients with systolic or diastolic overload of the right ventricle. In patients who had moderate or severe pulmonary stenosis the second sound was wide and fixed during respiration; it was also wide and fixed in patients who had a considerable left-to-right shunt at the atrial or ventricular level ...
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Heart Sounds Interference Cancellation in Lung Sounds

2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006
Several attempts have been made to achieve a quantitative analysis of lung sounds mainly for two purposes: a) an understanding of their genesis, and b) an insight of their changes with pathologies for medical diagnosis. Early studies involved the collection of acoustic information at several positions on the thoracic surface or at the extra-thoracic ...
L. F. Domínguez-Robert   +3 more
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Sound Pulses and the Heart

The Journal of the Acoustical Society of America, 1966
A personal experience is reported for the benefit of persons experimenting with audible repetitive sound pulses. Prolonged exposure to pulses having a repetition rate higher than the normal heart-beat rate appears to fix the cardiac rhythm at an abnormally high rate.
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Sound mind vs sound heart

British Journal of Hospital Medicine, 2016
Depressive and anxiety disorders have both have been associated with an increased risk of cardiovascular disease. This article highlights the multifactorial and bidirectional interaction between cardiovascular diseases, depression and anxiety, and the need for early assessment, diagnosis and intervention.
Sathya Cherukuri   +4 more
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Sounds of the heart in diastole

The American Journal of Cardiology, 1974
Abstract Cardiac diastole usually is acoustically silent even though several hemodynamic events take place in this phase of the cardiac cycle. In some healthy subjects and in many patients with cardiovascular alterations one or more “extra” heart sounds may be heard in diastole, and in them the distinction between normal and abnormal heart sounds ...
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The third heart sound

International Journal of Cardiology, 1985
A unitary concept is proposed to explain the genesis of the third heart sound and associated "rapid filling wave" of the apexcardiogram in physiological and pathological states including constrictive pericarditis. This theory not only clarifies the hitherto unexplained phenomenon such as presence of S3 in significant mitral stenosis, but also places in
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Classification of heart sounds based on quality assessment and wavelet scattering transform

Comput. Biol. Medicine, 2021
Na Mei   +5 more
semanticscholar   +1 more source

Genesis of Heart Sounds

JAMA: The Journal of the American Medical Association, 1978
To the Editor.— I would like to make the following comments about the production of A2. Leatham 1 recorded phonocardiograms and external carotid pulse tracings in ten healthy persons and concluded that the origin of the first component of S2 is associated with aortic valve closure by its relationship to the dicrotic notch.
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