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 Sound Page
Welcome to the
first heart sound
page. On this page we provide a definition, sample heart sounds and links to the training lessons available on this site.
What is an First Heart Sound?
The first heart sound is a low frequency sound, occurring at the beginning of systole. First heart sounds can be best heard over the apex, using a stethoscope's bell or diaphragm. The first heart sound is causes by turbulence created when the mitral and tricuspid values close. In normal adults, S1 and S2 heart sounds are heard, often described as lub - dub.
Listen to First Heart Sound
First and Second Heart Sounds
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Normal first and second heart sounds.
Loud First Heart Sound
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Normal Heart Sound Guide
Information and examples of first and second hearts sounds. The guide pages provide waveforms with a moving cursor that is synchronized to the audio recording. In addition, listening tips are available.
Normal Heart Sounds
First Heart Sound Courses
This is a link to our short courses that cover first heart sounds.
Normal Heart Sounds
First Heart Sounds