With newer, non-invasive imaging techniques, the origin of other, so-called ''
adventitial sounds'' or heart clicks has been appreciated. These are short, high-pitched sounds.
* The
mitral valve
The mitral valve ( ), also known as the bicuspid valve or left atrioventricular valve, is one of the four heart valves. It has two Cusps of heart valves, cusps or flaps and lies between the atrium (heart), left atrium and the ventricle (heart), ...
in cases of
mitral stenosis
Mitral stenosis is a valvular heart disease characterized by the Stenosis, narrowing of the opening of the mitral valve of the heart. It is almost always caused by Rheumatic Heart Disease, rheumatic valvular heart disease. Normally, the mitral va ...
may open with an ''opening snap''
on the beginning of
diastole
Diastole ( ) is the relaxed phase of the cardiac cycle when the chambers of the heart are refilling with blood. The contrasting phase is systole when the heart chambers are contracting. Atrial diastole is the relaxing of the atria, and ventricul ...
.
* Patients with
mitral valve prolapse
Mitral valve prolapse (MVP) is a valvular heart disease characterized by the displacement of an abnormally thickened mitral valve leaflet into the atria of the heart, left atrium during Systole (medicine), systole. It is the primary form of myxom ...
may have a
mid-systolic click along with a murmur, referred to as apical late systolic murmur.
Early systolic clicks may also be present in some patients.
*
Aortic and
pulmonary stenosis may cause an ejection click
immediately after S
1.
References
{{Cardiovascular system symptoms and signs
Symptoms and signs: Cardiac
Audible medical signs