ATI RN
Urinary System Multiple Choice Questions Questions
Question 1 of 5
Which of the following receives blood from the efferent arteriole?
Correct Answer: D
Rationale: Peritubular capillaries receive blood from efferent arteriole, not vein, glomerulus, or afferent. This specifies post-glomerular flow, key for reabsorption, contrasting with other vessels.
Question 2 of 5
Which statement is incorrect regarding the treatment of UTI in pregnant women?
Correct Answer: C
Rationale: Nitrofurantoin 50 mg QID is incorrect dose is low (100 mg typical), and duration is 7 days, not 14, in pregnancy (e.g., avoids fetal risk late-term). 10-14 day duration fits some overstated for all. Augmentin and cephalexin are safe correct usage. Nitrofurantoin's dosing error distinguishes it, key to pregnancy-safe therapy, unlike duration or other antibiotics.
Question 3 of 5
Which size renal stones have a 90% chance of passing?
Correct Answer: B
Rationale: <5 mm stones have ~90% spontaneous passage small enough for ureteral transit (e.g., distal stones). <3 mm passes easily near 100%. <7 mm drops to ~50% size matters. <8 mm rarely passes obstructs. 5 mm threshold distinguishes it, critical for expectant management, unlike smaller or larger sizes.
Question 4 of 5
Which statement is incorrect regarding renal trauma?
Correct Answer: C
Rationale: Major renal injury can occur without macroscopic hematuria e.g., grade 4 laceration with microhematuria, incorrect. Blunt trauma with microhematuria alone imaging optional, true. With rib fracture/flank tenderness imaging needed, correct. Penetrating with macrohematuria imaging mandatory, accurate. Subtle major injury distinguishes the error, key to trauma assessment, unlike stable or obvious cases.
Question 5 of 5
Which statement is true?
Correct Answer: D
Rationale: Both are true: High-dose furosemide lacks ARF benefit only aids overload (e.g., no GFR improvement). Dopamine (1-5 µg/kg/min, not mg) is renal-dose, used post-volume correction in oliguria unproven efficacy, but fits scenario. Dual accuracy distinguishes it, key to evidence-based ARF care, unlike single or negated options.