234 results
Normal Anion-Gap Acidosis (NAGMA) - Differential Diagnosis Framework and Workup

NAGMA
- Chem, ABG or VBG
- Calculate Anion
Gap - UAG and Urine ... gap - UA with urine ... - RenalUrine ... • Serum K low ... • Serum K: low
Volume Based Approach to Hyponatremia
Hypovolemic, Serum uric acid >4
 • Urine Na <20: Extra-renal losses
 •
uric acid >4 • Urine ... losses • Urine ... Hypothyroidism, Low ... uric acid >4 • Urine ... Nephrotic syndrome • Urine
Hyponatremia Differential Diagnosis Algorithm - Utilizing Uric Acid 
ADH promotes Urea/uric acid excretion along with water
Osmolarity 2) Urine ... Osmolarity 3) Urine ... Uric Acid - Low ... High Uric Acid → renal ... nephrology #sodium #low
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted - 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting,
hyperaldosteronism • Low ... Urine Cl-: Vomiting ... , NGT suction, Low ... (late) • High Urine ... hyperaldosteronism • High PRA: Renal
Primary Metabolic Alkalosis - Differential Diagnosis Algorithm
Volume Depleted 2° hyperaldosteronism
 • Low Urine Cl-: Vomiting, NGT
hyperaldosteronism • Low ... Urine Cl-: Vomiting ... , NGT suction, Low ... (late) • High Urine ... hyperaldosteronism • High PRA: Renal
True Hyponatremia Differential Algorithm

Instead (or in addition) of volume status examination, check urine sodium and serum
examination, check urine ... uric acid: - Urine ... sodium low, uric ... hyponatremia - Urine ... and uric acid low
Approach to Hypomagnesemia 

Fractional excretion of magnesium = (urine magnesium x serum creatinine)/ [0.7 (serum magnesium
of magnesium = (urine ... serum magnesium x urine ... cells FEMg >4% = renal ... magnesium loss if renal ... nephrology #magnesium #low
Types of Renal Calculi

Calcium oxalate
 - Interstitial apatite plaque, Low urine volume, Increased urinary calcium excretion,
apatite plaque, Low ... urine volume, Increased ... urine volume, Increased ... and intestine, Low ... phosphate: alkaline urine
Renal Tubular Acidosis - Differential Diagnosis Algorithm
Decreased Serum K, Urine pH < 5.5 - Proximal RTA
Decreased
Renal Tubular Acidosis ... Decreased Serum K, Urine ... Decreased Serum K, Urine ... Tubular Acidosis • Urine ... obstruction • Urine
Distal Renal Tubular Acidosis (RTA)  Type 1 

Totally scuppers the kidney's acidification mechanism. Will be
Distal Renal Tubular ... diagnosis with direct urine ... Failure to acidify urine ... Distal #Diagnosis #Management