6 results
Hormonal Regulation of the Blood Calcium concentration

#Calcium #Regulation #Parathyroid #Calcitonin #Calcitriol #PTH #Endocrinology #Pathophysiology #Hormones
Hormonal Regulation ... of the Blood Calcium ... concentration #Calcium ... #Parathyroid #Calcitonin ... #Calcitriol #PTH
Hypercalcemia - Differential Diagnosis Algorithm
Primary Hyperparathyroidism
 • Adenoma
 • Hyperplasia
 • MEN 1 and 2A
Tertiary Hyperparathyroidism
Hypercalcemia - ... long-standing secondary ... Autosomal Dominant Calcium ... Excess Vitamin D/Calcitriol ... Other • Excess Calcium
Hypomagnesemia (Serum level < 1.7 mg/dL)
Neuromuscular manifestations 
 • Tremor, tetany, seizures 
 • Weakness
Abnormalities of calcium ... metabolism • Hypocalcemia ... • Parathyroid hormone ... Decreased synthesis of calcitriol
Hypercalcemia - Hormones and Pathophysiology  
Calcitriol:
 • Bones: Enhances mineralization
 • GI Tract: ↑ Ca2+
Hypercalcemia - ... Hormones and Pathophysiology ... Calcitriol: ... Ca2+, ↓ PO4- Calcitonin ... #Hormones #Pathophysiology
Pharmacologic Options for Hypercalcemia Associated with Cancer
Rehydration with NS followed by loop diuretics
 • IV normal
Pharmacologic Options for Hypercalcemia ... conversion to calcitriol ... • Calcitonin ... resorption • Gallium ... osteoclast activity #hypercalcemia
Causes of Hypocalcemia by Clinical Cause

Acute illness: pancreatitis, tumor lysis, severe illness - Secondary hyperparathyroidism from
severe illness - Secondary ... low circulating calcium ... or parathyroid hormone ... absent parathyroid hormone ... Renal disease - Secondary