26 results
Causes of Hypocalcemia - Differential Diagnosis Algorithm
 • Extravascular: Pancreatitis, surgery, acute phosphate intake and renal
Drug induced: Calcium ... poisoning • Hyperphosphatemia ... Kidney Disease • Hyperphosphatemia ... , Low PTH: Hypoparathyroidism ... • Hypophosphatemia
Workup for Hyperphosphatemia - Differential Diagnosis Framework
Rule out spurious hyperphosphatemia: paraproteinemia, hyperlipidemia, hemolysis, hyperbilirubinemia, liposomal amphotericin
Workup for Hyperphosphatemia ... Rule out spurious hyperphosphatemia ... Absorption: • Hypoparathyroidism ... @aishaikh #Hyperphosphatemia ... Diagnosis #Framework #Workup
Hypocalcemia Workup - Differential Diagnosis Algorithm
 • Low Magnesium, High Magnesium - Functional Hypoparathyroidism
 • High
Hypocalcemia Workup ... deficiency • Drugs: Calcium ... Extravascular deposition: Hyperphosphatemia ... #Hypocalcemia #Workup ... Algorithm #nephrology #calcium
Hypophosphatemia - Measurement of urine phosphate excretion - Differential Diagnosis Algorithm
 • GI loss
 • Redistribution
Hypophosphatemia ... Redistribution • Primary Hyperparathyroidism ... PO4 wasting #Hypophosphatemia
Hypophosphatemia Diagnostic Algorithm
- GI Losses
- Redistribution
- 1° HPT
- 1° Renal PO4 wasting: Hereditary, TIO, Fanconi Syndrome,
Hypophosphatemia ... Redistribution - 1° HPT ... Zalman Agus #Hypophosphatemia
Hypophosphatemia - Differential Diagnosis Algorithm

Transcellular Shift
 • Recovery From DKA
 • Refeeding Syndrome
 • Acute Respiratory
Hypophosphatemia ... PO4 > 5%: • Hyperparathyroidism ... Resistance • Hypophosphatemic ... Chronic Diarrhea #Hypophosphatemia
Hyperphosphatemia - Differential Diagnosis Algorithm
Transcellular Shift:
 • Rhabdomyolysis
 • Tumor Lysis
 • Metabolic or Respiratory Acidosis
Hyperphosphatemia ... Renal Disease • Hypoparathyroidism ... • Pseudo-hypoparathyroidism ... Laxatives Pseudo-hyperphosphatemia ... Tumor Lysis #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 ... @aishaikh #Hypophosphatemia ... Diagnosis #Framework #Workup
Hypophosphatemia - Differential Diagnosis Algorithm
Appropriately Low Kidney Phosphate Excretion:
 • Decreased GI Absorption: Chronic Diarrhea, Antacids,
Hypophosphatemia ... Vitamin D: Primary Hyperparathyroidism ... , CAR-T cell #Hypophosphatemia ... nephrology #phosphorus #workup
Indications for Parathyroidectomy in Primary Hyperparathyroidism
 • All patients with symptomatic PHPT
 • Serum calcium 1
Parathyroidectomy in Primary Hyperparathyroidism ... with symptomatic PHPT ... • Serum calcium ... nephrocalcinosis, 24h urine calcium ... endocrinology #management #Hyperparathyroidism