de Musset's sign is a condition in which there is rhythmic nodding or bobbing of the head in synchrony with the beating of the
heart
The heart is a muscular organ in most animals. This organ pumps blood through the blood vessels of the circulatory system. The pumped blood carries oxygen and nutrients to the body, while carrying metabolic waste such as carbon dioxide t ...
, in general as a result of
aortic regurgitation
Aortic regurgitation (AR), also known as aortic insufficiency (AI), is the leaking of the aortic valve of the heart that causes blood to flow in the reverse direction during ventricular diastole, from the aorta into the left ventricle. As a conseq ...
whereby blood from the aorta regurgitates into the left ventricle due to a defect in the
aortic valve
The aortic valve is a valve in the heart of humans and most other animals, located between the left ventricle and the aorta. It is one of the four valves of the heart and one of the two semilunar valves, the other being the pulmonary valve. The ...
.
The nodding is an indication that the systolic pulse is being felt by the patient because of the increased pulse pressure resulting from the aortic insufficiency. The condition was named after the French poet
Alfred de Musset
Alfred Louis Charles de Musset-Pathay (; 11 December 1810 – 2 May 1857) was a French dramatist, poet, and novelist.His names are often reversed "Louis Charles Alfred de Musset": see "(Louis Charles) Alfred de Musset" (bio), Biography.com, 2007 ...
.
De Musset's sign is a type of
head tremor.
See also
*
Aortic aneurysm
An aortic aneurysm is an enlargement (dilatation) of the aorta to greater than 1.5 times normal size. They usually cause no symptoms except when ruptured. Occasionally, there may be abdominal, back, or leg pain. The prevalence of abdominal aortic ...
*
Tremor
A tremor is an involuntary, somewhat rhythmic, muscle contraction and relaxation involving oscillations or twitching movements of one or more body parts. It is the most common of all involuntary movements and can affect the hands, arms, eyes, fa ...
References
{{Cardiovascular system symptoms and signs
Cardiovascular diseases
Medical signs