OsteoHormone Flashcards
the most common location of fracture
lower lumbar spine
a T score of what is indicative of osteoporosis
< -2.5
a T score of what is indicative of osteopenia
-1 to - 2.5
a T score of what indicates normal bone health
> -1
what are Z scores
compare a pt BMD to the mean BMD of a pt of their age and gender
what are T scores
compare a pt BMD to the BMD of a normal young adult of the same gender
cells involved in bone formation
osteoblast
break down bone, resorption
osteoclast
what are the high risk areas that a DEXA scan looks at
hips, lumbar vertebrae
at what age should ALL women get a DEXA scan
65
what is the purpose of the FRAX tool
estimates risk of fracture in the next 10 years
what steroid use is considered a risk of osteoporosis
prednisolone greater than 5mg or prednisone equivalent for > = 3 months
genetic factors for osteoporosis are most important with what races
white, asian
what are some risk factors for low bone density
> 2 alcoholic drinks a day, smoking, low vit d and ca intake over life, roid use for >= 3 months at > 5 mg prednisone equivalent dose, previous fracture, < 127 lbs, low physical activity for life, decrease estrogen (menopaus, hypogonadism, lactation, anorexia)
what are drugs that put you at risk for osteoporosis
long term steroid use ( >= 3 months @ > 5mg prednisolone or prednisone equivalent), warfarin, heparin, anticonvulsants (carbamazepine, phenytoin, fosphenytoin, phenobarbital), aromatase inhibitors (tx breast cancer), androgen blockers (treat prostate cancer), loop diuretics, excess thyroid hormone
bone accumulates until what age
30
when is calcium intake very important
childhood, pregnancy, menopause
vit d deficiency in children causes
rickets
vit d deficiency in adults causes
osteomalacia
recommended daily Ca intake for 14-18 y/o
1300 mg
recommended daily Ca intake for 19-50 y/o
1000 mg
recommended daily Ca intake for > 50 y/o
1200 mg
how much elemental Ca is in Ca-citrate
21%
how much elemental Ca is in Ca-carbonate
40%
daily Vit D recommendation for up to 70 y/o
600 IU
daily Vit D recommendation for > 70 y/o
800 IU
what is the preferred source of Vit D
cholicalciferol (Vit D3)
what is used 1st line in treatment of osteoporosis
bisphosphonates
what are the bisphosphonates (generic)
zolidronic acid, ibandronate, risedronate, alendronate
what agent will increase a patients fracture risk due to it decreasing calcium carbonate absorption
PPI
fosamax
alendronate
reclast
zoledronic acid injection
actonel
risedronate
boniva
ibandronate
dose of fosamax for prevention and treatment
5mg prevention 10mg treatment qd
daily dose of actonel
5 mg daily