8. Typically in bundle-branch block, either the left or the right bundle branch

Question

8. Typically in bundle-branch block, either the left or the right bundle branch of the heart is unable to conduct electrical impulses. In such a case, the wave of excitation spreads out from the terminals of the intact branch and eventually depolarizes both ventricles, but the normally stimulated ventricle becomes completely depolarized two to three times more rapidly than the other ventricle. In three sentences or less and in terms of cellular and anatomical properties, explain what effect the bundle-branch block has on heart sounds. Be specific

Explanation / Answer

Bundle branch block means fails to conduct electrical impulses due to which both ventricles are not contract at the same time , one contract early as compare to other means there is something wrong in mitral and tricuspid valve also , both of involved in heart sound. Bundle branch block hampered the intensity of heart sound.

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