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With the advent of 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 atrioventricular valves of patients with mitral stenosis may open with an opening snap on the beginning of diastole.
- Patients with mitral valve prolapse may have a mid-systolic click along with a murmur, referred to as apical late systolic murmur.
- Aortic and pulmonary stenosis may cause an ejection click immediately after S1.
- MOUNSEY P (April 1953). "The opening snap of mitral stenosis". Br Heart J. 15 (2): 135–42. doi:10.1136/hrt.15.2.135. PMC 479479. PMID 13041992.
- "The Auscultation Assistant - Mitral Stenosis". Retrieved 2009-03-17.
- Rizzon P, Biasco G, Brindicci G, Mauro F (March 1973). "Familial syndrome of midsystolic click and late systolic murmur". Br Heart J. 35 (3): 245–59. doi:10.1136/hrt.35.3.245. PMC 458599. PMID 4692656.
- "Techniques - Heart Sounds & Murmurs Exam - Physical Diagnosis Skills - University of Washington School of Medicine". Retrieved 2009-03-06.