Carvallo's sign
Carvallo's Sign
Carvallo's sign (/kɑːrˈvɑːloʊz saɪn/) is a clinical sign in medicine used to diagnose pericardial effusion. It is named after the Venezuelan cardiologist, Dr. Juan Carvallo, who first described it in 1872.
Etymology
The term "Carvallo's sign" is derived from the name of its discoverer, Dr. Juan Carvallo. The word "sign" in this context is used to denote a clinical indication or symptom of a particular medical condition, in this case, pericardial effusion.
Definition
Carvallo's sign is defined as an increase in the intensity of the tricuspid valve's regurgitant murmur during inspiration. This is due to the increased venous return to the right side of the heart during inspiration, which increases the volume of blood that the tricuspid valve must handle, leading to an increase in the intensity of the murmur.
Related Terms
- Pericardial effusion: An abnormal accumulation of fluid in the pericardial cavity, the space between the heart and the pericardium.
- Tricuspid valve: One of the four valves in the heart, located between the right atrium and the right ventricle.
- Murmur: An abnormal sound heard during auscultation of the heart, often indicative of a heart valve problem.
- Inspiration: The process of drawing air into the lungs, part of the respiratory cycle.
See Also
External links
- Medical encyclopedia article on Carvallo's sign
- Wikipedia's article - Carvallo's sign
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