Following an automobile accident where the patient had a traumatic amputation of his lower leg and lost greater than 40% of his blood volume, he is currently not producing any urine output. The nurse bases this phenomena on which of the following humoral substances responsible for causing severe vasoconstriction of the renal vessels?
A) Aquaproin-2 channels
B) Angiotensin II and ADH
C) Renin and potassium ions
D) Albumin and norepinephrine

Question

Quizplus · Accepted Answer

Increased sympathetic activity causes constriction of the afferent and efferent arterioles and thus a marked decrease in renal blood flow. Intense sympathetic stimulation can produce marked decreases in renal blood flow and GFR. Humoral substances, including angiotensin II, ADH, and endothelins, produce vasoconstriction of renal blood flow.Aquaporin-2 channels, potassium ions, and albumin do not have vasoconstriction properties.

Following an Automobile Accident Where the Patient Had a Traumatic