11 results
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
- Differential ... Transcellular Shift ... • Normal or High ... Low PTH: - High ... #Differential #
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Hypophosphatemia ... - Differential ... Transcellular Shift ... Inappropriately High ... #Differential #
Mechanisms of Drug-Induced Hyperkalemia 
 • Direct renin inhibitor (Aliskiren)
 • Renin release inhibition (NSAIDs, Beta-Blockers)
• Increased EC shift ... #hyperkalemia #differential ... pathophysiology #pharmacology ... #potassium #medications
Algorithm for patients with hypokalemia on the basis of the potassium-to-creatinine ratio in the urine
Urine K+
the basis of the potassium-to-creatinine ... creatinine) • Cell shift ... mmol creatinine) High ... hypokalemia #urine #potassium ... #differential #
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... phlebotomy High ... • Recent IV potassium ... Intracellular Shift ... #high #nephrology
Causes of Hypomagnesemia
Redistribution:
 - IV glucose
 - Correction of diabetic ketoacidosis
 - IV hyperalimentation
 - Refeeding
osmotic diuresis - Potassium ... depletion - Familial hypophosphatemia ... Causes #diagnosis #differential ... medications #drugs #pharmacology
Hyperkalemia - Differential Diagnosis Framework

PseudoHyperkalemia:
 • Lab error
 • Traumatic venipuncture
 • Hemolysis, thrombocytosis, leukocytosis
 •
Hyperkalemia - Differential ... phlebotomy High ... • Recent IV potassium ... Intracellular Shift ... #high #nephrology
Rhabdomyolysis - Differential Diagnosis Framework and Management Summary

Causes of Rhabdomyolysis:
 • Trauma:
	- Immobilization
	- Crush injury
	- Compartment
Rhabdomyolysis - Differential ... Hyperkalemia • Hyperphosphatemia ... Shift of extracellular ... Monitor potassium ... Rhabdomyolysis #Differential
Lactated Ringers (LR) vs Normal Saline (NS) - Comparison

Composition of LR:
 • Sodium 130 mEq/L
 •
130 mEq/L • Potassium ... transcellular shift ... densa receives high ... NS #comparison #pharmacology
Causes of Hyperkalemia - Differential Diagnosis Framework
 • Cellular Shift:
   - Exercise
Hyperkalemia - Differential ... Framework • Cellular Shift ... #Hyperkalemia #Differential ... Diagnosis #Causes #potassium ... #high