What increases or decreases the intensity of the first heart sound? Four factors affect the intensity of the first heart sound. Since the M1 portion of S1 is much louder than T1, it is only important ...

The S3 heart sound occurs as the mitral valve opens and allows blood to fill the left ventricle passively. The sound happens as a result of blood striking the left ventricle during early diastole. An ...

An S4 heart sound cannot be present during atrial fibrillation (atrial kick is required). An S3 heart sound cannot be present in the setting of severe mitral stenosis. An S3 heart sound can be present ...

Doctors have been listening to the sounds our bodies make for years. Before the invention of stethoscopes, they simply put their ears to their patients' chests or abdomens. The technical term for this ...

The software uses the Company’s smart stethoscopes to analyze heart sounds, phonocardiogram and electrocardiogram (ECG) signals (when available). The Food and Drug Administration (FDA) has cleared the ...