2595 results
Hypercalcemia - Hormones and Pathophysiology  
Calcitriol:
 • Bones: Enhances mineralization
 • GI Tract: ↑ Ca2+
, ↑ PO4- absorption ... , ↑ PO4- reabsorption ... Tract: ↓ Ca2+ absorption ... Kidneys: ↑ Ca2+ reabsorption ... , PO4- reabsorption
Hypercalcemia of Malignancy - Pathophysiology
PTH-mediated
 • Parathyroid cancer
 • Ectopic production: Small cell lung cancer, ovarian
intestinal calcium absorption ... and stimulates resorption ... Stimulate calcium reabsorption ... kidney, Stimulates resorption
Parathyroid Hormone (PTH) Effect in Calcium and Phosphorus
Calcium - Net Effect Hypercalcemia:
   ↑ intestinal
↑ intestinal absorption ... ↑ bone reabsorption ... ↑ tubular reabsorption ... Hypophosphatemia: ↑ bone reabsorption ... ↓↓ tubular reabsorption
Fluid and Water Secretion and Absorption in the GI Tract

#Fluid #water #Secretion #Absorption #reabsorption #GITract #diagnosis
Secretion and Absorption ... water #Secretion #Absorption ... #reabsorption #
Hypercalcemia - Differential Diagnosis Algorithm
Elevated PTH (High or normal):
 • Primary Hyperparathyroidism
 • Familial Hypocalciuric Hypercalcemia
Low
Miscellaneous - Bone Resorption ... - Calcium Reabsorption ... Diagnosis #Algorithm #causes
Causes of Hypercalcemia
Hypercalcemia due to increased bone Ca2+ resorption:
 • Primary hyperparathyroidism, Malignancy, Pseudohyperparathyroidism, Renal failure,
Causes of Hypercalcemia ... increased bone Ca2+ resorption ... increased GI Ca2+ absorption ... Hypercalcemia #Causes
Oral Hypoglycemics in Diabetes Management
1  INSULIN SENSITIZER
 • TZD 
     -
Diabeta) 3 CARB ABSORPTION ... slows gut starch absorption ... tubule glucose reabsorption
Major Segments of the Nephron and their Functions 
 - Glomerulus - Formation of glomerular filtrate
tubule (PCT) - Reabsorption ... Isosmotic reabsorption ... Secretion and reabsorption ... organic acids and bases ... loop - Passive reabsorption
GI Tract Secretions and Fluid Absorption
Dietary Input and Digestive Secretions:
 • Food and drink: 2000 mL
Secretions and Fluid Absorption ... 200 mL Water Reabsorption ... Secretions #Fluid #Absorption ... #Reabsorption #
Causes of Hypocalcemia - Differential Diagnosis
Decreased calcium absorption
 • Vitamin D deficiency
    -
Causes of Hypocalcemia ... Decreased calcium absorption ... Decreased intestinal absorption ... resistance to bone resorption ... resistance to bone resorption