0,35 CME

Post Menopausal Osteoporosis: Clinical review

Pembicara: Dr. Yamini Dhar

Spesialis Obstetri dan Ginekologi, Rumah Sakit AlZahra, UEA

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Keterangan

Post Menopausal Osteoporosis is a prevalent skeletal disorder that affects women after menopause. It results from hormonal changes, particularly a decline in estrogen levels, leading to decreased bone density and strength.The condition increases the risk of fractures, especially in the spine, hips, and wrists. Clinical assessment of postmenopausal osteoporosis involves evaluating medical history, risk factors, and bone mineral density measurements. Dual-energy X-ray absorptiometry (DXA) is the gold standard for diagnosing and monitoring bone density in affected individuals. Treatment options for postmenopausal osteoporosis include lifestyle modifications, calcium and vitamin D supplementation, and various medications like bisphosphonates, selective estrogen receptor modulators, and monoclonal antibodies. Regular weight-bearing exercises and resistance training can help improve bone health and reduce fracture risk. Fall prevention strategies, such as home modifications and balance exercises, can significantly reduce the likelihood of fractures. Long-term use of certain medications, such as glucocorticoids, can exacerbate bone loss in postmenopausal women.

Ringkasan

  • Osteoporosis is a common bone disease characterized by decreased bone mineral density, mass, and strength, leading to an increased risk of fractures. It's a significant global health concern, especially with aging populations, affecting around 200 million people and making bones weak and brittle. Prevention and treatment through proper diagnosis and follow-up are crucial to avoid complications.
  • Identifying women at risk for osteoporotic fractures is key. Obstetricians, gynecologists, physicians, and nurses should consider the patient holistically, provide education, and guide them towards screening and diagnosis. While treatment is typically managed by rheumatologists or endocrinologists, all healthcare providers can play a crucial role in early diagnosis and referral.
  • Bone mineral density peaks around age 30, followed by gradual bone loss, accelerating significantly after menopause. This rapid loss can lead to height reduction, spinal curvature, and an increased risk of fractures. Fractures, particularly hip fractures, can cause pain, disability, reduced lung capacity, imbalance, and GI symptoms, ultimately decreasing life expectancy and impacting independence.
  • Risk factors for osteoporosis include age, female gender, ethnicity, hormonal factors, poor nutrition, malabsorption syndromes, poor vision, weak muscles, balance problems, smoking, alcohol intake, and family history. Certain medical conditions like rheumatoid arthritis, hyperparathyroidism, chronic renal disease, and Cushing's syndrome, as well as medications like corticosteroids and certain anticonvulsants, can also contribute to secondary osteoporosis.
  • Diagnosis involves bone density measurement using dual-energy X-ray absorptiometry (DEXA) scans of the spine, hip, and forearm. Fracture risk assessment tools like FRAX are used to predict the 10-year fracture risk based on factors like age, BMI, fracture history, parental hip fracture, smoking, glucocorticoid use, rheumatoid arthritis, secondary osteoporosis, alcohol intake, and bone mineral density.
  • Treatment strategies include lifestyle modifications, nutritional advice, and supplements like calcium (1000mg/day) and vitamin D (800 IU/day), aiming to improve bone mineral density and prevent falls. Pharmaceutical interventions involve antiresorptive drugs like bisphosphonates (alendronate, zoledronate), humanized monoclonal antibodies (denosumab), and anabolic drugs like romosozumab and teriparatide, tailored to individual risk profiles and tolerance.
  • First-line treatments are typically antiresorptive therapies like bisphosphonates. Second-line options include monoclonal antibodies, raloxifene, or strontium ranelate, used when first-line treatments are not tolerated or effective. Anabolic therapies are reserved for patients with high risk and recent fractures. Younger postmenopausal women may benefit from hormone replacement therapy for prevention.
  • Follow-up is crucial after treatment, with bone mineral density monitoring every two to three years. Treatment duration typically lasts around five years for bisphosphonates and three years for denosumab, but may be extended depending on the patient's age, fracture history, treatment adherence, secondary osteoporosis, or continued use of steroids.
  • Osteomalacia, a condition involving softening of bones due to vitamin D deficiency, can be a differential diagnosis, presenting with bone pain and muscle weakness. Treatment for osteomalacia primarily involves vitamin D, calcium, and phosphorus supplements.

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