Hoover's sign (pulmonary)
Hoover's Sign (Pulmonary)
Hoover's Sign (pronounced: hoo-verz sign) is a clinical sign in medicine that is indicative of severe Chronic Obstructive Pulmonary Disease (COPD). It is named after Dr. Charles Franklin Hoover, who first described the sign in 1920.
Etymology
The term "Hoover's Sign" is derived from the name of Dr. Charles Franklin Hoover, an American physician who first described this clinical sign in the context of pulmonary disease.
Definition
Hoover's Sign refers to the inward movement of the lower rib cage during inspiration, as opposed to its normal outward movement. This paradoxical movement is due to the flattening of the diaphragm, which occurs in severe emphysema, a type of COPD.
Clinical Significance
Hoover's Sign is a physical examination finding that is used to assess the severity of COPD. It is a sign of hyperinflation of the lungs and diaphragmatic fatigue. The presence of Hoover's Sign indicates severe airflow obstruction and poor prognosis in patients with COPD.
Related Terms
- Chronic Obstructive Pulmonary Disease (COPD): A type of obstructive lung disease characterized by long-term breathing problems and poor airflow.
- Emphysema: A type of COPD involving damage to the air sacs (alveoli) in the lungs.
- Diaphragm (anatomy): The primary muscle used in respiration, which is the process of breathing. This dome-shaped muscle is situated just below the lungs and heart.
- Pulmonary Disease: Any problem in the lungs or that prevents the lungs from working properly.
External links
- Medical encyclopedia article on Hoover's sign (pulmonary)
- Wikipedia's article - Hoover's sign (pulmonary)
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