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
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Heart Sounds Guide
Lung Sounds Guide
Sonography Training (free)
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Normal Heart Sounds
Third Heart Sound - Physiologic
The third heart sound is heard early in diastole. Along with the first and second heart sounds, this extra sound creates a gallop cadence and sounds like "Kentucky."
In this auscultation example the second heart sound is unsplit to make it easier for you to distinguish the third heart sound.
The third heart sound is very low frequency (between 25 hz and 50 hz). Listen with the bell of the stethoscope at the cardiac apex. Asking the patient to lie on his left side will frequently increase the intensity of the third heart sound.
A third heart sound is heard on occasion in normal individuals with no cardiac pathology.
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The recommended auscultation position for the stethoscope is the
Mitral
position. For this sound, use stethoscope's
bell
.
The recommended patient position is
Supine
Phonocardiogram
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.
Heart Animation
Lessons
First and Second Heart Sounds - Normal and Unsplit
First Heart Sound (Minimally Split)
Second Heart Sound - Physiologically Split #1
Third Heart Sound - Physiologic
Innocent Murmur
Exercise - Heart Rate 120
Practice Drill
Listening Tips
A synopsis of important sound features and timing for this abnormality.
S2:
Unsplit.
Diastole:
S3 in early diastole. Low pitch. Galloping (S1,S2,S3) or intermittent sound.
CaseID
35
CourseID
22
CourseCaseOrder
4
ID
18