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Exam (elaborations)

Renal (Usmle First Aid) Questions With Correct Answers

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RENAL (USMLE FIRST AID) QUESTIONS WITH CORRECT ANSWERS

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Transitional cell carcinoma typical location of origin


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renal calyx/pelvis, ureter, bladder




Decreased vitamin D decreases serum Ca by


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→ decreasing 1,25 Vit D3 → decrease intestinal Ca absorption




Mannitol clinical uses

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drug overdose, increased intracranial/intraocular pressure




filtered load equation (mg/min)


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GFR (ml/min) x plasma concentration (mg/ml)




cystine kidney stones urine crystal morphology


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hexagonal




kidney stones treatment


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fluid intake

,What type of drugs are SGLT2 inhibitors?


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-flozin drugs




Extracellular fluid makes up 1/3 of TBW. What percent of the ECF is interstitial fluid?
What percent is plasma?


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Interstitial fluid= 75% (10.5 kg)
Plasma=25% (3.5 kg)




hyperkalemia clinical presentation


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EKG
-wide QRS
-peaked T waves → can get sine waves
arrhythmias
muscle weakness




how is H2O reabsorbed in the collecting tubule?


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, aquaporins, increased by ADH which acts via V2 receptors (blood side)
Insertion of aquaporin channels on apical side




Diabetic glomerulonephropathy light microscope morphology


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mesangial expansion, GBM thickening, eosinophilic nodular
glomerulosclerosis




Excess cortisol in these cells due to enzyme deficiency (11 b-hydroxysteroid
dehydrogenase) →


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→ mineralocorticoid receptor activity → hypertension, hypokalemia,
metabolic alkalosis

Have low serum aldosterone levels




If pH >7.45 (alkalemia) what should you next look at?


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PCO2 and HCO3

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