B6.055 Clinical Implications of Osteoporosis Flashcards

1
Q

most common metabolic bone disease in the elderly

A

osteoporosis

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2
Q

difference between male and female bone mass

A

men have 30% more bone mass

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3
Q

difference between AA and Caucasian bone mass

A

AA get 10% higher peak bone mass

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4
Q

risk of hip fracture in white and black women in the US

A

risk by age 90

  1. 3% in white women
  2. 3% in black women
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5
Q

prevalence of osteoporosis worldwide

A

8.9 million fractures annually
fracture every 3 seconds
200 million women worldwide
75% in patients 65 or over

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6
Q

epidemiology of osteoporosis in the US

A

52 million women and men 50 or older have osteoporosis OR osteopenia (14 million osteoporosis)
50% of women over age 50 will sustain a fracture in their lifetime

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7
Q

what areas are measure in a DXA scan

A

radius
lumbar spine
greater trochanter

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8
Q

how much is fracture risk increased with a drop of 1 SD in BMD

A

2.6%

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9
Q

how much is fracture risk increased with a drop of 2.5 SDs in BMD

A

10%

not linear

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10
Q

most common fractures

A
  1. distal forearm
  2. hip
  3. spine
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11
Q

fracture risk factors

A
  1. fall risk
  2. BMD
  3. architecture and geometry of bones
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12
Q

screening of BMD

A

start @ 65
every 2 years get a DXA
every year if on osteoporosis therapy
can start earlier with justification

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13
Q

risk factors for osteoporosis in men

A

hypogonadism
alcoholism
glucocorticoid use

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14
Q

what is the minimum amt of steroid that can begin bone loss

A

7.5 mg qd for a month

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15
Q

mortality post hip fracture in men vs women

A

men 2x higher mortality

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16
Q

residual lifetime risk of osteoporotic fracture in men vs prostate cancer

A

27% osteoporotic fracture

11.3% prostate cancer

17
Q

progression of bone mass

A

peaks at age 30
loss worsens after menopause
estrogen protects against osteoclastic activity

18
Q

lab work to do when screening for osteoporosis

A
CMP
CNC
UA
TSH
vit D
PTH if high Ca
free testosterone if male
SPEP/UPEP if suspect MM
19
Q

IADLs

A
shopping
housekeeping
accounting
food prep
telephoning
transportation
20
Q

BADLs

A
dressing
eating
ambulating
toileting
hygiene
21
Q

SH when evaluating for osteoporosis

A

active?
function?
history of fractures
cognitive history

22
Q

exercise rec on osteoporosis prevention

A

30-60 min 3-4x/wk weight bearing
strength training 2x/wk
750 cal/week reduced hip fractures by 36%

23
Q

Ca recommendations

A

adolescents, non pregnant women, menopausal women: 1200 mg/d

women and men over 65: 1500 mg/day

24
Q

how are individuals >65 given Ca

A

usually given as CaCo3 600 twice daily with dietary intake
OR
500 3x per day without dietary intake

25
Q

when to use Ca supplements

A
osteopenia, osteoporosis, poor Ca intake patients
take 500-600 mg at a time 
CaCo3 with meals
-can be constipating
Ca citrate with or without meals
26
Q

Vit D recommendations

A

600-1200 IU/d

milk, cereals, egg yolk, seaweed, liver

27
Q

vit D compliance

A

over 70% of women 51-70 don’t meet guidelines

90% of women over 70 don’t meet guidelines

28
Q

NIH vit D guidelines

A

< 70 : 600 IU

> 70: 800 IU

29
Q

how to take bisphosphonates

A
poor absorption
take in AM
30 min before PO
stand up or sit up
8 ox of plain water
30
Q

use of calcitonin

A

nasal spray 200 IU/day
1 spray per day
used for analgesia for acute fracture, not effective as monotherapy for future fracture reduction

31
Q

how does ONJ present?

A

nonhealing tooth extraction or exposed bone in jaw progressing to bone inection

32
Q

risk of ONJ with bisphosphonates

A

<1/10,000 pts
associated primarily with IV bisphosphonate use in cancer patients undergoing dental procedures
only 1 case without cancer history