Severity of mitral stenosis is determined by :: (A) Intensity of S1 hea sound, (B) Diastolic murmur duration, (C) Opening snap, (D) Intensity of diastolic murmur
Answer is B. Since there is mitral stenosis, more time for blood to enter LV. Therefore, increased transient time, so increase duration of murmur of S1 sound can be loud or soft. If sound is soft it tells us about calcified mitral valves but not of severity