Author Question: Which of the following statements most accurately captures the function of the ascending loop of ... (Read 79 times)

anshika · **on:** Jun 25, 2018

Which of the following statements most accurately captures the function of the ascending loop of Henle?

A)
Urine is concentrated by the selective absorption of free water in the ascending limb.
B)
Sodium and water are reabsorbed in equal amounts, reducing filtrate quantity but maintaining osmolality.
C)
The majority of solute and water reabsorption occurs in the ascending loop of Henle.
D)
Impermeability to water and absorption of solutes yields a highly dilute filtrate.

Question 2

Following coronary bypass graft (CABG) surgery for a massive myocardial infarction (MI) located on his left ventricle, the ICU nurses are assessing for clinical manifestations of cardiogenic shock.

Which of the following assessment findings would confirm that the client may be in the early stages of cardiogenic shock? Select all that apply.
A)
Decreasing mean arterial pressure (MAP)
B)
Low BP reading of 86/60
C)
Urine output of 15 mL last hour
D)
Low pulmonary capillary wedge pressure (PCWP)
E)
Periods of confusion

JaynaD87 · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

Ans:
D

Feedback:

The osmolality of the filtrate reaches a low of 100 mOsm/kg of water in the ascending limb as a result of its impermeability to water.

Answer to Question 2

Ans:
A, B, C, E

Feedback:

Signs and symptoms of cardiogenic shock include indications of hypoperfusion with hypotension (BP 96/60), decrease in mean arterial pressure (MAP) due to poor stroke volume, and a narrow pulse pressure. Urine output decreases because of lower renal perfusion pressures. PCWP is usually elevated due to increased preload. Periods of confusion or altered cognition/consciousness may occur because of low cardiac output.