Hoover sign


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Related to Hoover sign: conversion disorder, emphysema

Hoo·ver sign

(hū'vĕr),
1. when a subject lying supine is asked to raise one leg, he or she involuntarily creates counterpressure with the heel of the other leg; if this leg is paralyzed, whatever muscular power is preserved in it will be exerted in this way; or if the patient attempts to lift a paralyzed leg, counterpressure will be made with the other heel, whether any movement occurs in the paralyzed limb or not; not present in hysteria or malingering;
2. a modification in the movement of the costal margins during respiration, caused by a flattening of the diaphragm; suggestive of empyema or other intrathoracic condition causing a change in the contour of the diaphragm.

Hoover sign

(hoo′vĕr)
[Charles F. Hoover, U.S. physician, 1865–1927]
1. A test used in suspected unilateral hysterical paralysis due to a conversion disorder. The examiner places a hand under the heel of the paralyzed leg and asks the patient to raise the normal leg against resistance. In paralysis due to a conversion disorder, the examiner will feel pressure against the hand under the allegedly paralyzed leg. In true paralysis, no pressure will be felt.
2. A physical finding in patients with chronic obstructive pulmonary disease consisting of inward movement of the ribs with inspiration (instead of their slight normal, lateral and superior movement).
References in periodicals archive ?
One hundred seventeen years would pass before President Herbert Hoover signed a bill in 1931 making Key's battle-inspired poem with a melody toasting a Greek poet America's national anthem.
The Smoot-Hawley Tariff, which Hoover signed into law in 1930 after a Republican Congress passed it, was a significant factor in deepening the Great Depression.