which is the best technique to accentuate an aortic regurgitation murmur, if it is present?
a. Patient is upright, leaning forward, holding breath, and using the diaphragm of the stethoscope
b. Patient is upright, leaning forward, holding breath, and using the bell of the stethoscope
c. Patient in left lateral decubitus, holding breath and using diaphragm of the stethoscope
d. Patient in left lateral decubitus holding breath, and using the bell of the stethoscope