Erb's point (cardiology)

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File:Gray1216.svg
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).

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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  1. "Week 4". Retrieved 2007-10-11. 
  2. "Cardiac anatomy and physiology: a review - includes examination questions AORN Journal - Find Articles". Retrieved 2007-10-11. 
  3. Constant, Jules (1999). Bedside cardiology. Hagerstwon, MD: Lippincott Williams & Wilkins. p. 228. ISBN 0-7817-2168-7.