CCRN Nursing Exam Prep - Adult Critical Care

Answer - A - Hypertension. In hypovolemia, one of the compensatory mechanisms is activation of the sympathetic nervous system that increases the RR & PR and helps restore the BP to maintain tissue perfusion, but not cause a hypertension. The SNS stimulation constricts renal arterioles that increases release of aldosterone, decreases glomerular filtration, and increases sodium and water re-absorption that leads to oliguria.