Which portion of your hand is most sensitive to assessing vibrations such as a cardiac thrill?
a. dorsum of the hand
b. finger pads
c. palmar surface of the fingers at the metacarpophalangeal joints
d. radial surface of the hand at the distal interphalangeal joints
C
The palmar surface of the fingers at the metacarpophalangeal joints, the ball of the hand, and the ulnar surface of the hand best discriminate vibrations, such as a cardiac thrill and fremitus.
The dorsum of the hand is most sensitive to temperature changes in the body. The finger pads are useful in assessing fine tactile discrimination, skin moisture, and texture; the presence of masses, pulsations, edema, and crepitation; and the shape, size, position, mobility, and consistency of organs. Option "d" is not a portion of the hand used in palpation.
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