When Auscultating Heart Sounds, Which Technique Should the Nurse Use

When auscultating heart sounds, which technique should the nurse use?

A) Listen with the bell.
B) Listen with the diaphragm.
C) Listen with both the diaphragm and bell working from apex to base in a Z pattern.
D) Listen with both the bell and diaphragm comparing sides of the heart as progress from apex to base.