habituation

Question 1

describe iatrogenic hypoglycaemia

Answer 1

limiting factor in glycaemia control

impairs defenses against subsequnt hypoglycameia and thus causes recurrence of hypos

patients are less aware the more they happen (IAH)

due to intensive therapy to tx hyperglycaemia

Question 2

what happens in IAH

Answer 2

reduced neuroendocrine response to recurrent hypos

threshold glucose level for eliciting a counterregulatory response is lowered

increases risk of severe hypo

Question 3

what is habituation?

Answer 3

reduction of psychological behavioural response or physiological response to a stimulus as a result of repeated prolonged exposure

Question 4

what are the criteria for habituation?

Answer 4

repeated stimuli decreases response
if stimulus withheld repsonse recovers
succesively more rapid
the more rapid/ the more pronounced
the weaker the stimulus the more pronounced
effects may proceed beyond zero/asymptotic level
exhibits generalisation to other stimuli (sympathoadrenal repsonse)
other strong stimuli can cause dishabituation (must be novel and acute - exercise)
habituation of dishabituation can occur