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84 Cards in this Set

  • Front
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measures BMD
used in dx of osteoporosis
DEXA scan
minimize bone loss
delay progression of osteoporosis
prevent fracture-related M/M
tx for life (may not be necessary anymore)
goals of Drug tx in osteoporosis
what is now more important than calcium intake?
vit D
how should calcium supplements be given?
divided doses - one large dose will NOT be absorbed)

NATURALLY is the best way to get all vitamins/minerals
except Folic Acid - supplements are preferred
calcium requirements for adolescents
1200-1500/day
calcium requirements for premenopausal women (25-50)
1000/day
calcium requirements for postmenopausal women
not receiving HRT/ERT

receiving HRT/ERT
1200

1000
calcium requirements for men
<70
>70
1000/day

1200/day
commonly used calcium salts
calcium carbonate - TUMS, Caltrate, Oscal (40% elemental calcium)

calcium citrate - Citracal (21%)
calcium carbonate
TUMS
Caltrate
Oscal
Require acid for absorption
not taken in elderly or pts on PPI
does not require acid for absortion
calcium citrate (citracal)

need higher dose because less elemental calcium
does calcium increase risk of MI?
some evidence that it might, especially in people who do not take Vit D along with it

multivitamin may increase MI/death
vit D deficiencies are more common than previously realized because
decreased ability to absorb it as we age
increased use of sunscreens
more time indoors
best measure of Vit D
25-hydroxyvitamin D
to prevent Vit D deficiency
<70 y/o
>70 y/o
general recommendation

also weight bearing exercise and walking
600 IU/day
800IU/day

800-2000
to TREAT vit D deficiency
50,000 IU once WEEKLY x 6-8 weeks
re-check levels in 8 weeks
2 categories of drug therapy in osteoporosis
1. antiresorptives (biphosphonates, calcitonin, estrogen, estrogen agonists/antagonists=SERMs)

2. anabolic drugs (teriparatide/forteo)
antiresorptives MOA
biphosphonates
calcitonin
estrogen
estrogen agonsits/antagonists = SERMs
slow progression of bone loss
pts stop losing bone as quickly as they did before treatment and still make bone at a normal pace
anabolic drugs MOA
teriparatide/forteo
INCREASES the rate of bone formation
only class of drugs able to do this
HRT place in therapy
used to be 1st line for prevention of osteoporosis in post-menopausal
now LAST choice due to CV risks
Selective Estrogen Receptor Modulators (SERMs)
aka
estrogen agonists/antagonists
prevention AND treatment of osteoporosis in POSTmenopausal women
increases bone density
reduces risk of SPINE fx
these drugs only reduce risk of SPINE fx
SERMs (Raloxifene/Evista)
estrogen agonist in bone and lipid
antagonist in breast and uterus

*used more in prevention of breast cancer
can you use Raloxifene/Evista with Biphosphonates?
yes
Evista/Raloxifene side effects
SERM
hot flashes
leg cramps
DVT (black box warning)

^menopause sx
contraindications to SERMs/any drug messing with estrogen?
active thromboembolic dz
pregnancy
these drugs reduce the risk of breast cancer by 65% over 8 years
SERMs
Raloxifene/Evista
major therapeutic class for osteoporosis
and how long should they be given
biphosophonates x 5 years
prevention AND treatment of osteoporosis in pre and post-menopausal women, men, and steroid-induced osteoporosis
Biphosphonates (usually with Vit D)
Alendronate (Fosamax)
Ibandronate (Boniva)
Risedronate (Actonel)
Risedronate (Atelvia)
these drugs decrease both spine AND hip fx
usually include vit D

dosing
Bisphonphonates (Fosamax)

tx dose is 2x prevention dose (although tx dose is usually given)
how often are biphosphonates given
weekly for 5 years
risedronate (Atelvia)
release in the small intestine
can be taken AFTER breakfast instead of 30 minutes before

tx only - no prevention
Parenteral biphosphonates
ibandronate (Boniva)
Zoledronic Acid (Reclast)
side effects of biphosphonates
GI upset with PO drugs (so use Reclast)
musculoskeletal pain
osteonecrosis of the jaw (ONJ)
ONJ (osteonecrosis of the jaw)
death of bone cells
95% are cancer patients receiving biphosphonates
inhibiting bone turnover needed for healing
chlorhexidine gluconate rinse (Peridex) preferred before any dental surgery - to prevent ONJ
when is Peridex (chlorhexidine gluconate rinse) used?
prevent ONJ in pts getting dental surgery
contraindications for biphosphonates
hypocalcemia
considerations for biphosphonates (alendronate/Fosamax)
must be taken FIRST thing in the morning with at least 8ox WATER
must sit/stand for 30 MINS (boniva=60)
do NOT eat/drink anything or take meds for 30 mins
should not be given in NPO state
can patients stop biphosphonates?
yes - d/c drug if they haveb een on them for 5 years with good response and stable DEXA and low fracture risk

get DEXA q 2 years
calcitonin use in therapy
least effective in osteoporosis
but used in women 5 years beyond menopause to tx
used in patients with BONE PAIN
contraindications to calcitonin
hypersensitivity to salmon protein

should be given to osteoporosis pts experiencing BONE PAIN
miscellaneous osteoporosis drugs
Denosumab (Prolia)
used if pts failed/intolerant to other osteoporosis tx (like biphosphonates)
inhibits RANKLigand
given q 6 months (2x/year)
ADRs of Denosumab (Prolia)
subq osteoporosis drug q 6 mos inhibits RANKL
used after Reclast
skin reactions (eczema, dermatitis)
musculoskeletal pain
ONJ
eczema and dermatitis are ADRs of what drug
Denosumab (Prolia)
anabolic (bone formation) drugs used in osteo
teriparatide (Forteo)
parathyroid hormone
this drug is PTH and used for MAX od 2 years in osteo
Teriparatide (Forteo)
rebuilds bone and increased bone mineral density
nictonie is in
cigarettes, chewing tobacco

excites neurons = DA requirements of an addictive drug
nicotine withdrawal
irritability
sleeplessness
anxiety
diff concentrating
h/a
change in appetite
relapse
nicotine products
nicotine gum (nicorette)
transdermal nicotine patch (nicoderm CQ)
nicotone nasal spray (nicoTROL NS)
nictoine inhaler (Nicotrol inhaler)
reduce nicotine withdrawal sx
should NOT smoke while on these products
nicorette (nic gum)
sugar-free gum
FIXED schedule NOT prn
contraindicated: mouth/jaw problems or dentures/braces
Vareniciline (Chantix)
can smoke for first week
contains NO nicotine
targets nicotine receptors in brain, blocks nicotine from reaching them-->less dopamine is released compared to nicotine
if pt relapses, varenciline decreases reward-like effects of nicotine
varenciline
chantix
contains NO nicotine
ADRs of varenciline (chantix)
nausea
psych changes
when should chantix be stopped?
agitation
depressed mood
changes in behavior
suicidal
antidepressants (SSNI) that may have efficacy in smoking cessation
Bupropion (Ziban)
brand name = Welbutrin
Bupropion/Ziban
Welbutrin
antidepressant that may help with smoking cessation
gout attach is always preceded by
hyperuricemia
therapeutic goal in gout
lower UA below saturation point
< 6mg/dL
prevent deposition of urate crystals
proteins-->purines-->hypoxanthine-->xanthine-->UA
allopurinol plugs in to inhibit xanthine oxidase
colchicine blocks leukotrienes
NSAIDs (all except aspirin) used as
indomethacin
1st line tx of ACUTE gout attacks
Typical NSAID used in acute gout attacks
Indomethacin
(or ibuprofen)
why is aspirin NOT used in acute gout attacks?
causes hyperuricemia because competes with UA for excretion
Colchicine should NOT be used
in acute gout attacks
it has NO effect on metabolism or excretion of uric acid
it DOES prevent recurrent gout episodes
does colchicine affect metabolism/excretion of UA
NO! so not used in acute gout

also diarrhea is a bad ADR
when should you avoid colchicine?
ELDERLY (use allopurinol)
acute attacks (used NSAIDs, not aspirin)
NSAIDs and Colchine are not used in
Kidney impairment
ADRs of colchicine
DIARRHEA - good for monitoring toxicity (may be 1st sign)
IV is so toxic because you will not get diarrhea so no "initial" sx of toxicity
MYOPATHY
IV colchicine can lead to bone marrow suppression
IV colchicine ADR
bone marrow suppression
not used because no diarrhea = no wy to monitor toxicity
uricosurics
probencid (Benemid)
Sulfinpyrazone
used in UNDERexcreters
should NOT be started until 2-3 weeks after an acute attack
inhibits re-absorption of UA in renal tubules)
these drugs should not be started until 2-3 weeks after an acute gout attack
uricosurics (Probencid) used in under-excreters
inhibit reabsorption of UA = more UA in the urine
beacause uricosurics increase UA in the urine (inhibit reabsorption of UA) they often cause
kidney stones
maintain high urine volume (2L/day)
drug interactions with probencis (uricosuric)
ASA = retention of UA
Penicillin
kidney stones are seen with what drugs
uricosurics (Probencid)

do not give with ASA or PCN
allopurinol (Zyloprim)
standard drug used in between acute gouty episodes to decrease total UA
used in over-producers
xanthine oxidase inhibitor
allopurinol (zyloprim)

can be given once/day because allopurinol + alloxanthine give 24 hour control
how should allopurinol be doseed
titrated up
give Colchicine or NSAID until uric acid <6 to prevent gout attack
allopurinol and febuxostat should be given after
NSAID or colchicine reduce UA <6

titrate up
ADR of allopurinol
Allergic rxn
drug interactions of allopurinol
azathioprine or mercaptopurine (chemo drugs) - must decrease dose by 75%

allopurinol inhibits metabolism of probencid and warfarin
if pt is on chemo drugs, must reduce allopurinol by

allopurinol decreases mtabolism of
75%

warfarin and probencid
Febuxostat (Uloric)
new xanthine oxidase inhibitor
chronic gout in overproducers OR underexcretors

used if they cannot tolerate allopurinol
give NSAID or colchicine until UA <6
corticosteroids in gout
sometimes if attack is severe
rasburicase (Elitek) used for gout
in CA patients whose therapy results in tumor lysis and increase plasma uric acid
this drug is used to reduce UA in cacner pts
Rasburicase (Elitek)
when should you consider prophylactic gout therapy?
> 2 attacks in one year
severe primary attack
complicated by kidney stones
serum UA >10
urinary excretion of urate >1000 in 24 hours