Question

what physical exam finding suggests pleural effusion?
crackles throughout the lung fields
hyperresonance to percussion
increased tactile fremitus
dullness to percussion
question 28 (2 points)
what component of heart function primarily determines the \point of maximal impulse\ (pmi)?
left ventricular contraction
pulmonary valve closure
right atrial pressure
aortic regurgitation

Explanation:

For the first question, pleural effusion is associated with dullness to percussion as the fluid - filled pleural space changes the normal resonance. Crackles are more related to conditions like pulmonary edema, hyperresonance to hyperinflation, and increased tactile fremitus to consolidation. For the second question, the point of maximal impulse (PMI) is primarily determined by left ventricular contraction as it is the strongest impulse felt on the chest wall and is related to the left ventricle's pumping action. Pulmonary valve closure, right atrial pressure, and aortic regurgitation do not primarily determine the PMI.

Answer:

1. D. Dullness to percussion
2. A. Left ventricular contraction