Erb's point - ascultatory point midway between T and P locations. (See auscultatory Landmarks below)
early diastole - same as postsystole/postsystolic.
gallop - Having an S3 or S4 or both. This results in sound patterns that resemble a running horse.
late diastolic - end of diastolic period, same as presystole.
late systole - end of systole (same a presystole time period).
mid-diastole - middle of diastole.
mid-systole - middle of systole.
mitral valve - The bicuspid AV valve between the left atrium and left ventricle. It is the 2nd largest valve in the heart.
murmur - A sound, heard with a stethoscope, usually created by turbulent blood flow through abnormal valves.
presystole - (time) before systole, same as end diastole.
pulmonic valve - A three cusp semilunar valve between right ventricle and pulmonic artery. It is the 2nd smallest valve.
S1 - "Sound One" or first heart sound. The LUB in lub-dub. It is created by near simultaneous closure of the mitral and tricuspid valves.
S2 - "Sound Two" or second heart sound. The DUB in lub-dub. It is created by near simultaneous closure of the aortic and pulmonic valves.
S3 - Third heart sound or "ventricular gallop". Low in volume and in frequency (pitch). Heard in the early diastolic period and is normal in children. In adults >35 indicates CHF. It is NOT caused by valves, it is created by sudden tensing of the ventricular wall.
S4 - Forth heart sound or "atrial gallop". Low in volume and in frequency. Heard in the end-diastolic period. Can indicate HTN, CAD, or AMI.
systole (sis'-toe-lee) - to contract or eject blood, when used alone (not specifying ventricular or atrial), always means ventricular systole.
tricuspid valve - A three cusp AV valve between right atrium and right ventricle. It is the largest valve.
Normal S1 S2 Split S2
Split S1 Split S1 and S2
S3 Gallop S4 Gallop
Quadrupal Gallop Sumation Gallop
Systolic Murmurs Diastolic Murmurs
Midsystolic Click Practice with real sounds