47 results
Causes of Hypocalcemia - Differential Diagnosis Algorithm
 • Extravascular: Pancreatitis, surgery, acute phosphate intake and renal
- Differential Diagnosis ... , Low PTH: Hypoparathyroidism ... • Hypophosphatemia ... contrast agents • Hypomagnesemia ... #Differential #Diagnosis
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
Hypophosphatemia ... - Differential Diagnosis ... Hypokalemia • Hypomagnesemia ... PO4 > 5%: • Hyperparathyroidism ... #Differential #Diagnosis
Hypocalcemia - Differential Diagnosis Algorithm - Low and High Phosphate
LOW PHOSPHATE
 - Low/NormaI PTH
- Differential Diagnosis ... Malnutrition with Hypomagnesemia ... (CaSR) • Hypomagnesemia ... PTH • Hypoparathyroidism ... #Differential #Diagnosis
Hypophosphatemia Diagnostic Algorithm
- GI Losses
- Redistribution
- 1° HPT
- 1° Renal PO4 wasting: Hereditary, TIO, Fanconi Syndrome,
Hypophosphatemia ... Diagnostic Algorithm ... Redistribution - 1° HPT ... #phosphorus #low ... #diagnosis #Algorithm
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
- Differential Diagnosis ... Elevated - Secondary Hyperparathyroidism ... - Hypoparathyroidism ... severe illness, Hyperphosphatemia ... #Differential #Diagnosis
Hypophosphatemia - Measurement of urine phosphate excretion - Differential Diagnosis Algorithm
 • GI loss
 • Redistribution
Hypophosphatemia ... - Differential Diagnosis ... Redistribution • Primary Hyperparathyroidism ... PO4 wasting #Hypophosphatemia ... #Differential #Diagnosis
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
- Differential Diagnosis ... Primary or Tertiary hyperparathyroidism ... • Normal or Low ... - Normal or Low ... #Differential #Diagnosis
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
- Differential Diagnosis ... Magnesium - Functional Hypoparathyroidism ... PTH - Hypoparathyroidism ... Extravascular deposition: Hyperphosphatemia ... #Differential #Diagnosis
Hyperphosphatemia - Differential Diagnosis Algorithm
Transcellular Shift:
 • Rhabdomyolysis
 • Tumor Lysis
 • Metabolic or Respiratory Acidosis
Hyperphosphatemia ... - Differential Diagnosis ... Renal Disease • Hypoparathyroidism ... • Pseudo-hypoparathyroidism ... #Differential #Diagnosis
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... depletion, Familial hypophosphatemia ... Hyperthyroidism, Hyperparathyroidism ... #differential #diagnosis ... nephrology #magnesium #low