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NURS 300- Bariatrics Exam Questions And Correct Answers
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NURS 300- Bariatrics Exam Questions AndCorrect Answers
Epidemiology of obesity
At an epidemic level globally
is more common in indigenous populations, among men, and in older age,
complex medical, physical, social, and psychological causes
Hormones and peptides involved in obesity
Leptin, Ghrelin, Peptide YY
Leptin
A hormone secreted by adipocytes, serving as a satiety factor in the regulation of
appetite. Due to the high levels, resistance develops which leads to being less satisfied.
Ghrelin
Exercised by an empty stomach to arouse hunger. In obese individuals, this does not
decrease after eating, leading to overeating.
Peptide YY
Hormone made in the small intestine which delays gastric emptying -> less hungry.
Obese individuals make less of this, therefore over-eating
adipogenesis
Mesenchymal cells: Give rise to pre-adipocytes which proliferate locally
, Preadipocytes: Unlimited supply of these through life, so can grow endlessly
Adipocyte/Lipocyte: From cell differentiation, fill with lipids
Adipocyte Hypertrophy: Excessive increase in size and number leads to obesity. Can
continue to store lipids and grow to 1000x their size.
BMI calculation
Body Mass Index: weight (kg) / height (m^2)
A BMI of less than 18 is
Underweight
A BMI of 18-24.9 is
normal weight
A BMI of 25-29.9 is
overweight
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