117 results
Hematuria - Differential Diagnosis Framework

Gross Hematuria: Red/Dark urine
 • 1ml blood/liter urine can induce color change
disease - Alport syndrome ... pain hematuria syndrome ... • Nutcracker syndrome ... #urology #nephrology ... #renal #urine #
Acute Kidney Injury - AKI Workup Algorithm and Differential Diagnosis
Baseline Investigations: full blood count with differential,
dipstick, urine ... osmolarity If cause ... Abdominal compartment syndrome ... syndrome: troponin ... #causes
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Diagnosis Algorithm Syndrome ... Pain/Post-op • Neurologic ... GI losses • Renal ... Hypo-osmolar urine
Causes of Hyponatremia - Differential Diagnosis Algorithm
Syndrome of Inappropriate ADH - Euvolemic; no physiologic stimulus to
Causes of Hyponatremia ... Diagnosis Algorithm Syndrome ... Pain/Post-op • Neurologic ... GI losses • Renal ... Hypo-osmolar urine
Hematuria Workup and Diagnosis Algorithm
 • Confirm hematuria → Urinalysis >3 RBCs/HPF, exclude mimics, repeat testing
WBCs, or urine ... → Urine culture ... proteinuria, RBC casts ... for renal biopsy ... if cause not identified
Causes of Secondary Hypertension - Differential Diagnosis and Screening Testing
Common causes: 
 • Renal parenchymal disease
Doppler ultrasound; MRA ... test (with 24-h urine ... CT or MRI scan of ... • Cushing’s syndrome ... Mineralocorticoid excess syndromes
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
hyperaldosteronism • Low Urine ... (late) • High Urine ... hyperaldosteronism • High PRA: Renal ... Diagnosis #Algorithm #Nephrology ... #Causes
Nephritic vs Nephrotic Syndrome

Step 1: If the patient has hematuria and/or proteinuria, think about nephrotic/nephritic syndromes.
Step
Nephritic vs Nephrotic Syndrome ... nephrotic/nephritic syndromes ... hematuria (RBC casts ... dysmorphic RBCs in urine ... Comparison #Algorithm #Nephrology
Glomerular Diseases - Nephritic and Nephrotic Syndromes

Nephritic syndrome—due to GBM disruption. 
Hypertension. t BUN and creatinine.
and Nephrotic Syndromes ... Nephritic syndrome—due ... RBC casts in urine ... but in severe cases ... #Proteinuria #Nephrology
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
Na <20: Extra-renal ... Na >30: Renal losses ... Cirrhosis, Nephrotic syndrome ... : Renal failure ... #sodium #low #nephrology