heart sound


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heart sound

a noise produced within the heart during the cardiac cycle that can be heard over the precordium. It may reveal abnormalities in cardiac structure or function. Cardiac auscultation is performed systematically from the apex to the base of the heart or from base to apex, using a stethoscope to listen, initially with the diaphragm and then with the bell of the instrument. Standard heart sounds include S1, produced by the closure of the atrioventricular valves; S2, produced by the closure of the semilunar valves; S3; and S4. Additional heart sounds include clicks, gallops, murmurs, rubs, and snaps.

heart sound

Cardiology Any normal or abnormal sound heard by auscultation of the heart. See Fourth heart sound, Murmur, Third heart sound.
References in periodicals archive ?
ASDs are typically uncovered on exam via auscultation of heart sounds, which might reveal a split of the second heart sound (S2) and diastolic murmurs.
Conclusion: According to these values, it is concluded that the parameters of the heart sound used in this study do not make it possible to diagnose the sleep apnea from the heart sounds.
Rijuven's CardioSleeve is a stethoscope attachment that records synchronized electrocardiogram (ECG) and heart sound signals, transmits real-time data to any smartphone or tablet via Bluetooth and offers cloud-based analysis to help physicians provide diagnostic interpretation of a patient's heart in the office or from remote locations.
In 1940s clinical cardiology was limited to two heart sound, (1st and 2nd) two murmurs, systolic and diastolic, two investigations X-ray chest and ECG, two drugs Digoxin and Mercury diuretic injection.
The CADence handheld device collects heart sound data on 4 locations of the patients chest.
Clinical examination revealed ejection systolic murmur in pulmonary area with wide fixed splitting of 2nd heart sound.
The Bluetooth-connected mobile app, available from the Apple App Store, allows clinicians to view a heart sound waveform, save heart sounds directly to a patient's EHR, and collaborate securely with a cardiologist for a second opinion.
Physical examination disclosed that breath sound in the right lung was lower than the left lung, cardiac rhythm and heart sound were normal.
Signs can include tachycardia, tachypnoea, pulmonary rales, an enlarged heart, and third heart sound.
PNP doctors also monitored a "murmur" or abnormal heart sound.
It is connected with the fact that the first heart sound has the frequency of 16-18 Hz, which lies outside of the frequency range of electret microphones.
As the size of the first heart sound can express the left ventricle function, its correlation with cardiac output should be investigated.