Hypertrophy refers to a(n) _____
a. delay in impulse conduction through the SA node
b. disturbance in impulse conduction through the AV junction
c. increase in the diameter of a chamber of the heart caused by volume overload
d. increase in the thickness of a heart chamber because of chronic pressure overload
D
Enlargement of the atrial chambers, ventricular chambers, or both, may occur if there is a volume or pressure overload in the heart. Dilatation is an increase in the diameter of a chamber of the heart caused by volume overload. Dilatation may be acute or chronic. Hypertrophy is an increase in the thickness of a heart chamber because of chronic pressure overload. Hypertrophy is commonly accompanied by dilatation. Enlargement is a term that implies the presence of dilatation or hypertrophy or both.
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