L5: DM & Others Systems Flashcards
Outline
Mechanism by Which DM Causes Complications
DM Effect on Other Systems
what are the factors by which DM Causes Complications?
Effect of Accumulation of advanced glycosylation end products
Vascular permeability, procoagulant activity, adhesion molecule expression
Effect of Hyperglycemia
- ↓ NO production.
- ↑ Production of reactive oxygen species (ROS).
- Activation of protein kinase C increases the production of pro inflammatory
Effect of Dyslipidemia
- Increase insulin resistance which have major role in atherosclerosis
- Free fatty acids attenuate prostacyclin bioavailability by inhibiting prostacyclin synthase.
Effect of Production of vasoconstrictor mediators
- angiotensin II and endothelin-1 —-> which causes vascular smooth muscle growth
Effect of Impairing fibrinolytic capacity
in atherosclerotic lesions, ↑coagulation
tendency
GIT Complications of DM
- Mouth
- Esophagus
- Gastroparesis
- Diabetic Enteropathy
- Others
Mouth Complications in DM
Esophegeal Complications of DM
Gastroesophageal reflux disease (GERD)
Pathogenesis of DM-Induced GERD
- Caused by autonomic neuropathy
- Delayed gastric emptying.
Manifestations of DM-Induced GERD
- Dysphagia, Odynophagia, and Chest Pain.
- About one-third of diabetic patients.
TTT of DM-Induced GERD
Strict diabetic control.
Six small meals.
A low fat diet (<40 g per day)
Prokinetic agents (metoclopramide, Domperidone).
Stomach Complications of DM
Gastroparesis is defined as delayed gastric emptying
Pathogenesis of DM-Induced Gastroparesis
Caused by autonomic neuropathy
Manifesttaions of DM-Induced Gastroparesis
Nausea, vomiting, bloating
Postprandial fullness, anorexia
Early satiety, heartburn
Poor diabetic control
Recurrent post prandial hypoglycemia
Dx of DM-Induced Gastroparesis
- The presence of residual food in the stomach after an overnight fast during upper gastrointestinal endoscopy supports the diagnosis.
- The traditional “gold standard” to establish the diagnosis of gastroparesis is scintigraphic measurement of gastric emptying.
TTT of DM-Induced Gastroparesis
Intestinal Compliactaions of DM
Diabetic Enteropathy
Pathophysiology of Diabetic Enteropathy
unclear but multiple factors are probably involved
- autonomic neuropathy, infections, Bacterial overgrowth, Exocrine pancreatic insufficiency
Manifestations of Diabetic Enteropathy
- Diarrhea: watery & painless, at night, may be associated with fecal incontinence.
- Bouts of diarrhea can be episodic with intermittent normal bowel habits or even alternating with periods of constipation in addition steatorrhea can occur due to bacterial overgrowth
Management of Diabetic Enteropathy
Liver Complications of DM
Nonalcoholic steatosis
Nonalcoholic steatohepatitis
Glycogen hepatopathy: poor controlled type 1 DM.
Gall Bladder Complications of DM
Acute and chronic cholecystitis (including emphysematous cholecystitis )
Gall stones
Pancreas Complications of DM
Pancreatic exocrine dysfunctions.