15 results
Causes of Hypocalcemia - Differential Diagnosis Algorithm
 • Extravascular: Pancreatitis, surgery, acute phosphate intake and renal
poisoning • Hyperphosphatemia ... Kidney Disease • Hyperphosphatemia ... , Low PTH: Hypoparathyroidism ... • Hypophosphatemia ... contrast agents • Hypomagnesemia
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
Hypophosphatemia ... Hypokalemia • Hypomagnesemia ... PO4 > 5%: • Hyperparathyroidism ... Resistance • Hypophosphatemic ... Chronic Diarrhea #Hypophosphatemia
Hypocalcemia - Differential Diagnosis Algorithm - Low and High Phosphate
LOW PHOSPHATE
 - Low/NormaI PTH
Malnutrition with Hypomagnesemia ... NormaI PTH • Hypoparathyroidism ... (CaSR) • Hypomagnesemia ... PTH • Hypoparathyroidism ... • Secondary Hyperparathyroidism
Hypophosphatemia Diagnostic Algorithm
- GI Losses
- Redistribution
- 1° HPT
- 1° Renal PO4 wasting: Hereditary, TIO, Fanconi Syndrome,
Hypophosphatemia ... Redistribution - 1° HPT ... Zalman Agus #Hypophosphatemia ... #phosphorus #low
Hypocalcemia - Differential Diagnosis Algorithm
 • Low Serum Mg: GI losses, Renal losses, Alcoholism, Malnutrition, Drug-Induced
Diagnosis Algorithm • Low ... Elevated - Secondary Hyperparathyroidism ... - Hypoparathyroidism ... (very rare) • Low ... severe illness, Hyperphosphatemia
Workup for Hypophosphatemia - Differential Diagnosis Framework
Rule out spurious hypophosphatemia: paraproteinemia, acute leukemia
Measure Urine Fractional Excretion
Workup for Hypophosphatemia ... Rule out spurious hypophosphatemia ... Primary or Tertiary hyperparathyroidism ... • Normal or Low ... - Normal or Low
Causes of Hypomagnesemia
 • Redistribution: IV glucose, Correction of diabetic ketoacidosis, IV hyperalimentation, Refeeding after starvation,
Causes of Hypomagnesemia ... depletion, Familial hypophosphatemia ... Hyperthyroidism, Hyperparathyroidism ... aldosteronism #Hypomagnesemia ... nephrology #magnesium #low
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
Algorithm • Low ... Magnesium - Functional Hypoparathyroidism ... High Phosphate, Low ... PTH - Hypoparathyroidism ... Extravascular deposition: Hyperphosphatemia
Hypocalcemia - Differential Diagnosis Algorithm - Low and High PTH
LOW PTH - Hypoparathyroid
 - Congenital (Pediatric)
Diagnosis Algorithm - Low ... and High PTH LOW ... polyendocrinopathy • Hypomagnesemia ... - 25-OH D very low ... • Severe hyperphosphatemia
Hypomagnesemia and Electrolyte Disorders
 • Hypocalcemia - lowers PTH ( functional hypoparathyroidism), bone resistence to PTH,
Hypomagnesemia and ... PTH ( functional hypoparathyroidism ... from bones • Hypophosphatemia ... Hypokalemia - Low ... @kdjhaveri #Hypomagnesemia