Auscultation Training by Repetition

First Heart Sound plus Aortic Ejection Click - C402, #43

Unlock lessons and more.

Sign Up
waveform of heart or lung sound
Listen for 2-3 minutes
maneuver
Sitting
torso
Diaphragm

Listening Tips

Systole: High pitched sound, early in systole, short duration.
Repetition Training - Intermediate Heart Sounds

Table of Contents



left button                 right button
Previous Lesson        Next Lesson


repetition training button


Lesson Text

A single first heart sound (S1) followed by an aortic ejection click (AEC) can also mimic a split first heart sound. An AEC follows S1 by 50 milliseconds.

An aortic ejection click is caused by thickened aortic valve leaflets. This is commonly seen in a bicuspid aortic valve, a congenital abnormality where someone is born with two aortic valve leaflets instead of the normal three.

Listen carefully to the second sound of the pair. If it is an AEC it will have a shorter duration and a higher pitch than the first sound of the pair (S1).

The AEC is best heard at the Aortic valve area where splitting of S1 is not heard.

Comments on this beta version will be welcomed. Send to: comments@easyauscultation.com
c402
CaseID43
CourseID23
CourseCaseOrder6
ID31