23 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
Hypophosphatemia Diagnostic Algorithm
- GI Losses
- Redistribution
- 1° HPT
- 1° Renal PO4 wasting: Hereditary, TIO, Fanconi Syndrome,
Hypophosphatemia ... Diagnostic Algorithm ... Redistribution - 1° HPT ... Zalman Agus #Hypophosphatemia ... phosphorus #low #diagnosis
Hypophosphatemia - Measurement of urine phosphate excretion - Differential Diagnosis Algorithm
 • GI loss
 • Redistribution
Hypophosphatemia ... - Differential Diagnosis ... Redistribution • Primary Hyperparathyroidism ... PO4 wasting #Hypophosphatemia ... #Differential #Diagnosis
Hypocalcemia - Differential Diagnosis Algorithm - Low and High Phosphate
LOW PHOSPHATE
 - Low/NormaI PTH
- Differential Diagnosis ... Malnutrition with Hypomagnesemia ... (CaSR) • Hypomagnesemia ... Low PTH • Hypoparathyroidism ... #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
Causes of Hypomagnesemia ... depletion - Familial hypophosphatemia ... Hyperthyroidism - Hyperparathyroidism ... aldosteronism #Hypomagnesemia ... #Causes #diagnosis
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
Hypomagnesemia ( ... Hypocalcemia • Hypoparathyroidism ... calcitriol #Hypomagnesemia ... Signs #Symptoms #Diagnosis
Workup for Hyperphosphatemia - Differential Diagnosis Framework
Rule out spurious hyperphosphatemia: paraproteinemia, hyperlipidemia, hemolysis, hyperbilirubinemia, liposomal amphotericin
Workup for Hyperphosphatemia ... - Differential Diagnosis ... Rule out spurious hyperphosphatemia ... Absorption: • Hypoparathyroidism ... #Differential #Diagnosis
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
- Differential Diagnosis ... Elevated - Secondary Hyperparathyroidism ... Inappropriately Normal/Low - Hypoparathyroidism ... severe illness, Hyperphosphatemia ... #Differential #Diagnosis