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468699
Malabsorption
Descrição
Paediatrics (Gastroenterology & nutrition) Mapa Mental sobre Malabsorption, criado por v.djabatey em 07-01-2014.
Sem etiquetas
gastroenterology & nutrition
paediatrics
paediatrics
gastroenterology & nutrition
Mapa Mental por
v.djabatey
, atualizado more than 1 year ago
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Criado por
v.djabatey
quase 11 anos atrás
73
1
0
Resumo de Recurso
Malabsorption
manifestations of disorders affecting digestion or absorption of nutrients
abnormal stools
true malabsorption stool
hard to flush down the toilet
odour pervades whole house
colour is poor guide to abnormality
failure to thrive or poor growth
seen in most but not all cases
inapprop to ix kids for malabsorption as a cause of failure to thrive when dietary intake is low & other sx absent
specific nutrient deficiencies
reliable dietary assessment is important
can be pan-malabsorption
poor absorption of many nutrients
can be highly specific
e.g. Zn malabsorption
acrodermatitis enteropathica
causes of nutrient malabsorption
cholestatic liver disease or biliary atresia
bile salts no longer enter duodenum in bile
-> defective solubilisation of products of triglyceride hydrolysis
-> fat and fat-soluble malabsorption
exocrine pancreatic dysfunction
e.g cystic fibrosis
absent lipase, proteases & amylase
-> defective triglyceride, protein and starch digestion (pan-malabsorption)
small intestinal mucosal disease
loss of absorptive surface area
e.g. coeliac disease
specific enzyme defects
e.g. lactase deficiency ff gastroenteritis
common in Black & Oriental races
specific transport defects
e.g. glucose-galactose malabsorption
severe life-threatening diarrhoea with 1st milk feed
acrodermatitis enteropathica
zinc malabsorption
erythematous rash of mouth & anus
lymphatic leakage or obstruction
chylomicrons (containing absorbed lipid) unable to reach thoracic duct & sys circulation
e.g. intestinal lymphangiectasia (abnormal lymphatics)
short bowel syndrome
small intestinal resection
due to congenital abnormalities or necrotising enterocolitis
-> nutrient, water & electrolyte malabsorption
loss of terminal ileal function
e.g. resection or Crohn disease
absent bile acid and absent B12 absorption
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