Terminology Problems

1. What are the differences between cardiac hypertrophy, dilatation, enlargement, and overload?

ANS: The term hypertrophy refers to the thickening of the ventricular chambers. Dilatation refers to an increase in chamber volume. The terms enlargement and overload are not specific because they refer to either hypertrophy and/or dilatation. However, enlargement tends to be used as a synonym for dilatation.

Pure LVH causes an encroachment inward on the cavity and has been called "concentric" hypertrophy. Dilatation with proportionate hypertrophy has been called "eccentric" hypertrophy but is a confusing term that is best avoided.

2. What is meant by concentric vs eccentric hypertrophy?

ANS: Concentric hypertrophy refers to uniform hypertrophy of the ventricle. The opposite of concentric used to be eccentric hypertrophy, which, unfortunately, has many meanings. Eccentric hypertrophy has been applied to hearts with asymmetric septal hypertrophy, to dilated hearts that shifted the center eccentrically to the left, and to dilated hearts in which the hypertrophy was not proportional to the degree of dilatation. It should be apparent that the term eccentric hypertrophy should be avoided.

Note: Proportionate hypertrophy accompanies almost all chronically dilated ventricles.

Was this article helpful?

0 0
Reducing Blood Pressure Naturally

Reducing Blood Pressure Naturally

Do You Suffer From High Blood Pressure? Do You Feel Like This Silent Killer Might Be Stalking You? Have you been diagnosed or pre-hypertension and hypertension? Then JOIN THE CROWD Nearly 1 in 3 adults in the United States suffer from High Blood Pressure and only 1 in 3 adults are actually aware that they have it.

Get My Free Ebook


Post a comment