Heart
Heart Sounds Introduction
Pediatrics: When To Refer
Heart Murmur
Normal Heart Sounds
First Heart Sounds
Second Heart Sounds
Extra Heart Sounds (S3 & S4)
Systolic Murmurs
Diastolic Murmurs
Complex Conditions
Congenital Abnormalities
Cardiac Conditions Assoc. with Sudden Death
Heart Sounds in Primary Care
Auscultation Repetition Training
Heart Sounds Guide
Lungs
Lung Sounds Introduction
Basic Lung Sounds
Intermediate Lung Sounds
Lung Sounds Guide
Intro To Lung Sounds
Blood Pressure
Taking Blood Pressure
Measuring Blood Pressure Procedure
Adult Case Studies Part I
Adult Case Studies Part II
High Blood Pressure in Children
Extras
Terms
Quizzes
Heart Sounds Guide
Lung Sounds Guide
Sonography Training (free)
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First Heart Sounds
First Heart Sound plus Aortic Ejection Click
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.
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The recommended auscultation position for the stethoscope is the
Aortic
position. For this sound, use stethoscope's
Diaphragm
.
The recommended patient position is
Sitting
Phonocardiogram
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.
Heart Animation
Lessons
First Heart Sound - Loud
First Heart Sound (Minimally Split)
First Heart Sound (Markedly Split)
First Heart Sound - Decreased Intensity
Fourth Heart Sound Plus First Heart Sound
First Heart Sound plus Aortic Ejection Click
Practice Drill
Listening Tips
A synopsis of important sound features and timing for this abnormality.
Systole:
High pitched sound, early in systole, short duration.
CaseID
43
CourseID
23
CourseCaseOrder
6
ID
31