ATI LPN
Urinary and Renal System Questions Questions
Question 1 of 5
Given the following conditions: Capsular hydrostatic pressure = 15 mm Hg, Glomerular plasma osmotic pressure = 25 mm Hg, Glomerular hydrostatic pressure = 75 mm Hg, What is the NET FILTRATION RATE?
Correct Answer: A
Rationale: Net filtration pressure (NFP) = Glomerular hydrostatic pressure (75 mm Hg) - (Capsular hydrostatic pressure (15 mm Hg) + Glomerular osmotic pressure (25 mm Hg)) = 75 - (15 + 25) = 35 mm Hg (A). This drives filtration; 85 (B), 65 (C), and 115 (D) miscalculate, making A correct.
Question 2 of 5
The micturition center is located in the:
Correct Answer: A
Rationale: The micturition center in the pons (A) coordinates the reflex via parasympathetic signals, not medulla (B), cerebellum (C), or basal ganglia (D), making A the control site.
Question 3 of 5
The main solute component of urine is:
Correct Answer: A
Rationale: Urea (A), a nitrogenous waste from protein metabolism, is the primary solute in urine (~50% of solids). Glucose (B) is absent normally, agglutin (C) is invalid, and urobilinogen (D) is minor, making A correct.
Question 4 of 5
A nurse teaches a client who is recovering from a urography. Which instruction should the nurse include in this client's discharge teaching?
Correct Answer: C
Rationale: High fluid intake helps eliminate nephrotoxic dye quickly after urography.
Question 5 of 5
A nurse assesses a client who is recovering from extracorporeal shock wave lithotripsy for renal calculi. The nurse notes an ecchymotic area on the client's right lower back. Which action should the nurse take?
Correct Answer: B
Rationale: Bruising is common after lithotripsy; ice reduces discomfort and extent of bruising.