Erb's point (cardiology)
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Front of thorax, showing surface relations of bones, lungs (purple), pleura (blue), and heart (red outline). Heart valves are labeled with "B", "T", "A", and "P".
First heart sound: caused by atrioventricular valves - Bicuspid/Mitral (B) and Tricuspid (T).
Second heart sound caused by semilunar valves -- Aortic (A) and Pulmonary/Pulmonic (P).
First heart sound: caused by atrioventricular valves - Bicuspid/Mitral (B) and Tricuspid (T).
Second heart sound caused by semilunar valves -- Aortic (A) and Pulmonary/Pulmonic (P).
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In cardiology, Erb's point refers to the third intercostal space on the left sternal border where S2 is best auscultated.[1][2] It is essentially the same location as what is referred to with left lower sternal border (LLSB).
Some sources include the fourth left interspace.[3]
References
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