Osteoporosis, Menopause and Testosterone Use Flashcards
Osteoblasts definition?
Bone formation
Osteoclast definition?
Bone resorption, break-down
What is the golden standard for measuring BMD
Dual energy X-ray absorptiometry (DEXA or DXA)
How is Osteoporosis diagnosed?
T-score or Z-score
T-score: compares the patient’s measured BMD to the average peak BMD of a healthy, young white adult of the same age
What patient population should have BMD measured
Women ≥ 65 years
Men ≥ 70 years
Interpreting T-score
Normal: ≥ -1
Osteopenia (low bone mass): -1 to -2.4
Osteoporosis: ≤ - 2.5
What is the recommendation of daily Calcium intake for most adults?
1,000 - 1,200mg elemental calcium
MDD: 500 - 600mg elemental calcium per dose
How much elemental calcium dose Calcium Carbonate have?
What is the brand names?
Clinical pearls?
- 40%
- 1g of calcium carbonate = 400 mg elemental
- Tums, Oscal
- Must take with meals
How much elemental calcium dose Calcium Citrate have?
What is the brand names?
Clinical pearls?
- 21%
- 1g of calcium citrate = 210 mg elemental
- Citracal
- Can take with or without food
What is considered serum vitamin D deficient?
25(OH)D < 30 ng/ml
What is the first line therapy for Osteoporosis?
Bisphosphonates
Bisphosphonates clinical pearl
- Stay upright for 30 minutes
- Drink 6 - 8 oz of plain water
Bisphosphonates ADE
- Esophagitis
- Musculoskeletal symptoms
- Hypocalcemia
Rare but serious:
- Osteonecrosis of the jaw (ONJ)
- Atypical femur fractures
When is Denusumab (Prolia) recommended?
It is recommended as an alternative to Bisphosphonates
Denusumab (Prolia) dosing
SubCu every 6 months
Denusumab (Prolia) ADE
Hypocalcemia
When are Teriparatide (Forteo) and Abaloparatide (Tymlos) recommended?
They are recommended in very high risk patients only
Teriparatide (Forteo) and Abaloparatide (Tymlos) dosing
SubCu daily
Teriparatide (Forteo) and Abaloparatide (Tymlos) ADE
Hypercalcemia
Because they are Parathyroid Hormone 1-34 agents, just like Sensipar which also causes hypercalemia.
When Raloxifene (Evista) recommended?
Recommended as an alternative to bisphosphonates for:
***High risk patients of Vertebral fracture
and
***Low-risk of VTE or High-risk of breast cancer
Note: Also used for breast cancer
Criterial for initiating treatment:
What is considered Osteopenia if high risk
Low bone density (T-score b/w -1 and -2.5) at the femoral neck, total hip or lumbar spine
AND
FRAX score indicates a 10 year probability of ≥ 20% for a major osteoporosis-related fracture
OR
a 10 year hip fracture probability ≥ 3%
When is Bazedoxifene/Estrogens (Duavee) recommended?
- Recommended as an alternative to bisphosphonates for high risk patients of Vertebral fracture
- Only in patients with intact uterus
Bisphosphonates agents
- Alendronate (Fosamax); PO
- Risedronate (Actonel); PO
- Ibandronate (Boniva); PO and SubCu
- Zoledronic Acid (Reclast); SubCu
Estrogen agonist/antagonist contining agents
- Raloxifene (Evista)
- Bazedoxifene/Estrogens (Duavee)
Note: Both are of the class SERM
Parathyroid Hormone 1-34 agent
- Teriparatide (Forteo)
- Abaloparatide (Tymlos)
What is the FRAX score?
It is a tool which estimates the risk of osteoporotic fracture in the next 10 years
Why is vitamin D important in osteoporosis therapy management?
Because it is needed for Calcium absorption
What drug class is Denusumab (Prolia) in
Receptor Activator of Nuclear Factor kappa-B Ligand (RANKL) inhibitor
*** RANKL Inhibitor
What is the most effective treatment for vasomotor symptoms of Osteoporosis?
- Estrogen
* **Must be taken with Progestin to decrease the risk of endometrial cancer
Criteria for the use of estrogen hormone therapy in Osteoporosis treatment?
All of the following
- Healthy symptomatic women who are within 10 years of menopause
- Aged 60 years or younger
- Have no contraindication
(Extending treatment beyond age 60 years may be acceptable if using lowest possible dose)
What are some common hormone therapy uses in Menopause?
Topical Hormoe Therapy:
- 17-Beta-Estradiol
- Conjugated Equine Estrogens (Premarin)
Systemic Hormone Therapy:
- Estradiol (Alora, Climara, Vivelle-Dot)
- 17-Beta-Estradiol
- Conjugated Equine Estrogens (Premarin)
- Conjugated Equine Estrogens + Medroxyprogesterone (Prempro)
- Medroxyprogesterone (Provera)
- Micronized progesterone (Prometrium)