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Pedi Poll
Today's Poll
Should all patients with viral respiratory infection be treated with oseltamivir in current epidemic of H1N1 influenza_?
Yes, it may be H1N1
No, only if test is positive for influenza
Only in sick patients admitted in ICU
MALABSORPTION SYNDROMES
MALABSORPTION SYNDROMES
Dr. Saumil K. Shah
MD, DNB, DM, DNB
GASTROENTEROLOGIST, HEPATOLOGIST, ENDOSCOPIST
Honorary Consultant: Lilavati Hospital And Research Centre

Q. What is digestion and what is absorption?
A. Digestion means hydrolysis of nutrients. Absorption means uptake of nutrients from the gastrointestinal tract to the systemic circulation.

Q. What is maldigestion and what is malabsorption?
A. Maldigestion denotes impaired nutrient hydrolysis. Malabsorption refers to defective mucosal absorption of nutrients. However, the two entities are so closely linked that in clinical practice malabsorption serves as a global term for all aspects of their impairment. Malabsorption may occur for many nutrients or for specific carbohydrates, fats, or micronutrients.

Q. What steps are involved in digestion and absorption?
A. Three phases are involved:
Luminal phase
Luminal phase - Dietary fats, proteins and carbohydrates are hydrolyzed and solubilized, largely by pancreatic and biliary secretions.
Mucosal phase
Mucosal phase - Terminal hydrolysis of carbohydrate and peptides occurs and fats are processed and ;then packaged for cellular export.
Removal phase
Removal phase - Absorbed nutrients enter the vascular or lymphatic circulation.

Thus defect in any of these phases leads to malabsorption.

Gastrointestinal Disorders : Expertise Views
Gastrointestinal Disorders : Expertise Views
Gastrointestinal Disorders : Expertise Views
Gastrointestinal Disorders : Expertise Views
Gastrointestinal Disorders : Frequently Asked Questions
Gastrointestinal Disorders : Frequently Asked Questions
Gastrointestinal Disorders : Frequently Asked Questions
Gastrointestinal Disorders : Frequently Asked Questions
 
 
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