ATI RN
Questions About The Urinary System Questions
Question 1 of 5
Regarding urinalysis which is incorrect?
Correct Answer: C
Rationale: Nitrates aren't limited to coagulase-splitting bacteria any nitrate-reducers (e.g., E. coli) produce them, incorrect. Hematuria dipstick detects myoglobin/hemoglobin true cross-reactivity. Pyuria is near-universal diagnostic staple. Gram-positive/Pseudomonas lack nitrate reduction correct. Broad nitrate source distinguishes the error, key to dipstick interpretation, unlike true reactivity or bacterial traits.
Question 2 of 5
Which is the most common cause of these renal causes of acute renal failure?
Correct Answer: A
Rationale: Ischemic ATN is the most common renal ARF cause hypoperfusion (e.g., shock) damages tubules, outpacing nephrotoxic ATN (drugs), tubulointerstitial nephritis (allergic), and renal artery stenosis (vascular). Ischemia's frequency distinguishes it, critical for hospital-acquired ARF, unlike toxin, immune, or arterial causes.
Question 3 of 5
Which statement is incorrect regarding post streptococcal GN?
Correct Answer: D
Rationale: Antibiotics for strep don't prevent post-strep GN immune-mediated (e.g., anti-strep antibodies), not active infection, incorrect. Childhood predominance true. 7-14 days post-throat/skin accurate latency. Non-preventable nature distinguishes the error, key to GN's pathogenesis, unlike timing or demographic truths.
Question 4 of 5
Which of the following stones is most likely to be seen on X-ray
Correct Answer: D
Rationale: Pigment gallstones are radiopaque (~50%) calcium bilirubinate, visible on X-ray, unlike urate (radiolucent), cholesterol (bile, rare), or struvite (renal, not bile). Gallbladder context fits common site. Radiopacity distinguishes it, key to imaging detection, unlike ureteral or mislocated stones.
Question 5 of 5
A 22-year-old previously healthy male complains of dysuria. Genital examination is normal. Urinalysis shows 5 to 10 white blood cells per high power field. Which of the following antibiotic regimens is MOST appropriate?
Correct Answer: C
Rationale: Azithromycin 1 g + ofloxacin 400 mg once treats urethritis (e.g., Chlamydia/gonorrhea) in young males with dysuria 5-10 WBC fits STD, most appropriate. Ciprofloxacin 2 weeks is pyelonephritis overkill. TMP-SMX 3 days is female UTI short. Cephalexin 7 days lacks STD coverage mismatch. STD regimen distinguishes it, key to age/context, unlike UTI-focused options.