A patient taking a beta blocker complains of shortness of breath. The patient has respirations of 28 breaths per minute, a blood pressure of 162/90 mm Hg, and a pulse of 88 beats per minute. The nurse auscultates crackles in all lung fields
The nurse understands that these assessments are consistent with: a. bronchoconstriction.
b. left-sided heart failure.
c. rebound cardiac excitation.
d. sinus bradycardia.
B
The signs and symptoms describe left-sided heart failure, in which the blood normally handled by the left ventricle and forced out through the aorta into the body backs up into the lungs, pro-ducing respiratory signs and symptoms. The patient's signs and symptoms are not indicative of bronchoconstriction, which would cause wheezing and diminished breath sounds. Rebound car-diac excitation occurs when the beta blocker is withdrawn, not during administration of the drug. The patient's heart rate is elevated, so sinus bradycardia is not present.
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