Metabolic II Flashcards
cushings disease, specifically cushings syndrome is d/t?
pituitary secretion of excessive ACTH
s/sx of cushings syndrome
- Obesity/OSA (moon face and buffalo hump)
- HTN with volume overload
- electrolyte imbalances
- glucose intolerance
- GERD
- Myopathy/weakness/bruising
- infections/poor wound healing
Anesthesia considerations with Cushings
- will have htn
- normalize intravascular volume with diuresis (spirolactone)
- correct electrolytes and blood glucose
- consider etomidate
- Obesity/OSA will have issues with airway, IV access and positioning
why do we consider etomidate with cushings syndrome?
it inhibits steroid synthesis
primary adrenal insuffciency
destruction of adrenal gland
what is secondary adrenal insufficiency
anterior pituitary fails to secrete sufficient ACTH
what are some causes of primary/secondary adrenal insufficiency
autoimmune adrenalitis
TB
tumor
surgery
HIV
pituitary radiation
tertiary adrenal insufficiency
process that interfere with ACTH release
- exogenous high dose glucocorticoid therapy
- prednisone > 20 mg/day > 3 weeks
what is the average basal adrenal cortisol secretion per day?
30 mg/day
the stress of surgery, trauma, and infection can increase adrenal output of glucocorticoids up to ___________ mg/day
300
what are the s/sx of adrenal insufficency
- fatigue
- loss of appetite
- weight loss
- hypoglycemia
- hyponatremia
- hyperkalemia
- orthostatic hypotension
- hyperpigmentation
anesthesia considerations with adrenal insuffiency
- determine electrolyte levels, and glucose and manage
- myopathies –> conservative approach to NMB & respiratory insufficiency postop
- refractory to vasopressor and fluid therapy
- AVOID etomidate
- possible corticosteroid supplementation
when would you consider corticosteroid supplemenation intraoperatively in patient with adrenal insufficiency
if pt having major procedure and takes > 20 mg/day of prednisone or its equivalent
T/F: pts with adrenal insufficiency should discontinue glucocorticoid/mineralcorticoid drug therapy day of surgery
false; should continue
what is the risk of taking high dose steroid supplementation
adrenal insufficiency risk remains up to 1 year after cessation
unable to increase endogenous cortisol to respond to surgical stress
stress dose corticosteroid administration for minor procedures (adrenal insuff)
hydrocortisone 25 mg or methylprednisolone 5 mg DOS
stress dose corticosteroid administration for moderate procedures (adrenal insuff)
hydrocortisone 50-75 mg or methylprednisolone 10-15 mg DOS then taper over 1-2 days
stress dose corticosteroid administration for major procedure (adrenal insuff)
hydrocortisone 100-150 mg or Methylprednisolone 20-30 mg DOS then taper over 1-2 days
patient with pheochromocytoma has surgery scheduled; what should be prescribed to them outpatient and started 10-14 days prior to surgery date?
alpha blockade (phenobenzamine)
for patient with pheochromocytoma, once BP is undercontrol with alpha blockade, then you initiate _______________________
beta blocker
T/F: pts with pheochromocytoma should take all BP meds day of surgery
true
What should you expect intraoperatively for pt with pheochromocytoma
- aggressive hydration for euvolemia
- major hemodynamic changes: need Aline, vasoactive meds, and plan for postop care