Osteoporosis: Nursing Study Guide — Study

Osteoporosis is a high-yield NCLEX topic because it is silent until a fracture occurs, and nursing priorities focus heavily on prevention, safe medication administration, and patient teaching. This guide reviews the pathophysiology, diagnostic criteria, key drugs, and nursing interventions you need to know.

Definition

Osteoporosis is a condition in which bones become weak, thin, and fragile, making them more likely to break.
The World Health Organization (WHO) defines osteoporosis as a bone mineral density T-score of -2.5 or lower measured by dual-energy X-ray absorptiometry (DXA).

Pathophysiology

Bone resorption by osteoclasts exceeds bone formation by osteoblasts.
Result: thin, porous, weakened bones that fracture easily.

Risk Factors

Non-modifiable:

Female sex
Advanced age
Caucasian or Asian race
Family history
Small, thin frame
Menopause

Modifiable:

Low calcium intake
Vitamin D deficiency
Sedentary lifestyle
Smoking
Excessive alcohol
Long-term steroid use

The classic high-risk patient is a postmenopausal white female with a small frame.

Clinical Presentation

Osteoporosis is asymptomatic until a fracture occurs.
Vertebral compression fractures cause height loss, kyphosis (dowager's hump), and back pain.
Hip fractures are the most serious complication and often require surgery.

Diagnostic Tests

DXA scan — gold standard; T-score ≤ -2.5 confirms osteoporosis.
T-score interpretation:
- -1.0 to -2.5 = osteopenia
- ≤ -2.5 = osteoporosis
FRAX tool — calculates 10-year fracture risk.

Complications

Hip fractures — most serious; high morbidity and mortality.
Vertebral compression fractures — height loss, kyphosis, chronic back pain.
Falls — major concern; fall prevention is a nursing priority.

Prevention (Non-Pharmacologic)

Calcium: 1200 mg/day for postmenopausal women and men over 70.
Vitamin D: 800–1000 IU/day.
Weight-bearing exercise: walking, jogging, resistance training.
Fall prevention: remove tripping hazards, improve lighting, use assistive devices.

Pharmacologic Management

Bisphosphonates (first-line)

Examples: alendronate, risedronate, zoledronic acid.
Take on an empty stomach with a full glass of water.
Remain upright for 30–60 minutes to prevent esophagitis.
Monitor for osteonecrosis of the jaw and atypical femur fractures.

Selective Estrogen Receptor Modulators (SERMs)

Example: raloxifene.
For postmenopausal women only.
Increases risk of DVT and PE.

Denosumab (Prolia)

Subcutaneous injection every 6 months.
Monitor for hypocalcemia.

Nursing Interventions

Educate on adequate calcium and vitamin D intake.
Encourage weight-bearing exercises.
Implement fall prevention strategies.
Administer bisphosphonates correctly (empty stomach, full water, upright 30–60 min).
Monitor for side effects: esophagitis, jaw pain, atypical femur fractures.

Patient Teaching

Take calcium and vitamin D supplements daily.
Take bisphosphonates on an empty stomach with a full glass of water.
Remain upright for 30–60 minutes after bisphosphonates.
Report jaw pain, loose teeth, or non-healing sores (osteonecrosis of the jaw).
Report thigh or groin pain (atypical femur fracture).
Use fall prevention measures at home.

Common Exam Traps

T-score ≤ -2.5 = osteoporosis, not osteopenia.
DXA, not plain X-ray, is the gold standard.
Bisphosphonates must be taken on an empty stomach with full water.
Patients must remain upright 30–60 minutes after bisphosphonates to prevent esophagitis.
Jaw osteonecrosis is a known bisphosphonate complication.
Osteoporosis is asymptomatic until a fracture occurs.

Key Takeaways

Osteoporosis = weak, thin, fragile bones from imbalanced bone remodeling.
DXA T-score ≤ -2.5 confirms diagnosis.
Bisphosphonates are first-line; teach empty stomach, full water, and remain upright 30–60 minutes.
Hip fractures are the most serious complication.
Ensure 1200 mg calcium/day and 800–1000 IU vitamin D/day, plus weight-bearing exercise.
Nursing priorities: fall prevention, medication education, and monitoring for adverse effects.