S4 is a low-frequency gallop sound

S4 is a low-frequency gallop sound that results from a forceful atrial contraction during presystole that ejects blood into a ventricle which cannot expand further. S4 occurs ~90 msec before S1.
3+ กดบุ๋มลงไป 6 มม. สังเกตได้ชัด คงอยู่นานกว่า 1 นาที มองดูพบว่าขาบวมชัดเจน

ผลลัพธ์ (อังกฤษ) 2:

S4 is a low-frequency Gallop Sound that results from a forceful atrial contraction during Presystole that ejects blood into a ventricle which Can not Expand further. S4 occurs ~ 90 msec before S1.
3+ Press sink down to 6 mm. noticeable static. for more than one minute looking at the apparent leg swelling.

ผลลัพธ์ (อังกฤษ) 3:

S4 is a low-frequency gallop sound that results from a forceful atrial contraction during presystole that ejects blood. Into a ventricle which cannot expand further. S4 occurs ~ 90 msec before S1.
3 press dent into 6 mm observed clearly. Lasts longer than 1 minutes. Look find swelling in the legs is clear.