23 results
Approach to Hypomagnesemia 

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

Calcium oxalate
 - Interstitial apatite plaque, Low urine volume, Increased urinary calcium excretion,
Types of Renal Calculi ... Hypercalcemia, Renal ... Hyperuricemia, Renal ... Calculi #Types #Renal ... #diagnosis #causes
Hypomagnesemia - Differential Diagnosis
Renal Causes of Hypomagnesemia - Familial:
Bartter syndrome and Gitelman syndrome, Isolated recessive hypomagnesemia,
Differential Diagnosis Renal ... hypomagnesemia Renal ... Hypercalcemia, Post renal ... #nephrology #magnesium ... #low
Hypokalemia - Differential Diagnosis Algorithm
Extra-renal Losses:
 • Normal Acid-Base: Low intake
 • Metabolic acidosis: Gl tract
Algorithm Extra-renal ... • Metabolic acidosis ... loss (Diarrhea) Renal ... Diagnosis #Algorithm #causes ... #nephrology
Hypomagnesemia - Etiologies by Mechanism

Decreased GI Uptake 
 - Poor dietary intake (particularly common in alcoholics)
diarrhea / IBD Renal ... - Transient renal ... - Familial renal ... #Magnesium #Table ... Classification #Causes
Hypokalemia Evaluation Algorithm

Before evaluating hypokalemia, life threatening complications such as arrhythmias and paralysis should be looked
potassium(K) & magnesium ... suggests extra-renal ... - Metabolic acidosis ... differential #potassium #nephrology ... #low
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... steatorrhea) • Renal ... Tubulointerstitial renal ... differential #diagnosis #nephrology ... #magnesium #low
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
contribution of liver or renal ... - regional ischemia ... LV failure - Low ... deficiency - Renal ... lactate production Renal
Lactated Ringers (LR) vs Normal Saline (NS) - Comparison

Composition of LR:
 • Sodium 130 mEq/L
 •
filtration - Renal ... stretch - decreased renal ... renal tissue perfusion ... Instability: - Renal ... NS #comparison #pharmacology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
burns, trauma - Ischemic ... - Metabolic acidosis ... resistance Impaired Renal ... deficiency • Renal ... Type IV RTA • Renal