The fouh hea sound is caused by?
A fouh hea sound is common in persons who derive benefit from atrial contraction for ventricular filling as a result of decreased ventricular wall compliance and increased resistance to ventricular filling. For example, a fouh hea sound is often heard in older patients with left ventricular hyperophy.Ref: Guyton and Hall textbook of medical physiology 13th edition. Page:284
Closureiof the aoic and pulmonary valves
Vibrations inihe ventricular wall during systole
Ventricula filling
Closure of the mitral and tricuspid valves
Cardiovascular system