In which of the following conditions might the intensity of the heart sounds be reduced?
I.heart failure
II.severe obesity
III.pneumothorax
IV.pleural effusion
V.pulmonary hyperinflation

Question

Quizplus · Accepted Answer

The intensity of heart sounds can be reduced in conditions that either increase the distance between the heart and the chest wall or interfere with the transmission of sound. Heart failure can lead to a reduction in the force of heart contractions, thereby reducing sound intensity. Severe obesity increases the amount of tissue through which the sound must travel, reducing its intensity. Pneumothorax, pleural effusion, and pulmonary hyperinflation all involve changes in the lung or pleural space that can either increase the distance sound must travel or interfere with sound transmission, leading to reduced intensity of heart sounds.

In Which of the Following Conditions Might the Intensity of the Heart