The mitral valve is best auscultated at which location?

The mitral valve is best auscultated at which location?

• A. 5th ICS at the midclavicular line
• B. 2nd ICS right sternal border
• C. 3rd ICS left sternal border
• D. 2nd ICS left sternal border

Answer: (A)

Mitral valve auscultation targets the apex, where the heart’s apex beat is most prominent. This is located at the left fifth intercostal space along the midclavicular line. Listening in the left lateral decubitus position brings the apex closer to the chest wall, making mitral sounds and murmurs easier to hear. The other sites correspond to other valves: the right second intercostal space at the sternal border is the aortic area, the left second intercostal space at the sternal border is the pulmonic area, and the left lower sternal border is where the tricuspid area lies. Therefore, the best location to auscultate the mitral valve is the left fifth intercostal space at the midclavicular line.

Mitral valve auscultation targets the apex, where the heart’s apex beat is most prominent. This is located at the left fifth intercostal space along the midclavicular line. Listening in the left lateral decubitus position brings the apex closer to the chest wall, making mitral sounds and murmurs easier to hear. The other sites correspond to other valves: the right second intercostal space at the sternal border is the aortic area, the left second intercostal space at the sternal border is the pulmonic area, and the left lower sternal border is where the tricuspid area lies. Therefore, the best location to auscultate the mitral valve is the left fifth intercostal space at the midclavicular line.