In an 87-year-old woman with left buttock pain, new-onset headache, one day of bed confinement due to hip pain, hypotension (90/50 mm Hg), poor appetite and decreased activities of daily living, what are the possible diagnoses and should she be admitted?

Immediate Hospital Admission is Mandatory

This 87-year-old woman requires immediate hospital admission for evaluation and management of a likely hip fracture, with concerning systemic features including hypotension that suggest potential complications or concurrent serious illness.

Differential Diagnosis

Most Likely: Hip Fracture (Femoral Neck or Intertrochanteric)

• Primary concern: The combination of buttock/hip pain, inability to mobilize (bed-confined), and advanced age strongly suggests hip fracture 1, 2
• Hip fractures in elderly patients are associated with significant morbidity and mortality, with delays in diagnosis and treatment increasing complication rates, hospital length-of-stay, and death 2
• Critical point: Physical examination alone cannot definitively diagnose or exclude hip fractures 2
• Initial radiographs (AP pelvis with 15-degree internal rotation and cross-table lateral) are mandatory first-line imaging 2
• If initial radiographs are negative but clinical suspicion remains high, MRI should be obtained promptly, as occult fractures (particularly basicervical femoral neck fractures) may not appear on plain films initially 1

Concerning Associated Findings Requiring Urgent Evaluation:

Hypotension (90/50 mmHg) - This is NOT typical for isolated hip fracture and raises several red flags:

• Possible occult bleeding (retroperitoneal, intra-abdominal)
• Sepsis from concurrent infection
• Cardiac event (MI, arrhythmia)
• Severe dehydration from immobility and poor oral intake
• Medication effects in setting of acute illness

Headache - New-onset headache with systemic symptoms warrants consideration of:

• Intracranial pathology (subdural hematoma from fall)
• Meningitis/encephalitis (especially with fever if present)
• Giant cell arteritis (can present with hip/buttock pain from polymyalgia rheumatica)
• Severe hypertension or hypotension effects

Other Diagnostic Considerations:

• Iliopsoas tendon rupture: Can cause severe hip/groin pain in elderly patients, though less common 3
• Septic arthritis or deep infection: Particularly if fever present; can involve hip joint or paravertebral spaces 4
• Pelvic fracture: May present similarly with buttock pain
• Spinal pathology: Lumbar fracture, epidural abscess, or cauda equina syndrome

Why Admission is Essential

Strong Evidence-Based Rationale:

1. Surgical timing is critical: Guidelines strongly recommend surgery within 24-48 hours of admission for hip fractures to decrease complications and improve outcomes 1

   • Delays beyond 12 hours significantly increase 30-day mortality risk 2

2. Interdisciplinary care requirement: Strong evidence supports that hip fracture patients benefit from orthogeriatric team management to decrease complications and improve outcomes 1

3. Hypotension requires immediate workup: This hemodynamic instability needs:

   • Continuous monitoring
   • Fluid resuscitation
   • Investigation for underlying cause
   • Optimization before potential surgery

4. Functional decline: Bed confinement for even one day in an 87-year-old dramatically increases risk of:

   • Pressure ulcers
   • Deconditioning
   • Delirium
   • Venous thromboembolism
   • Aspiration pneumonia

5. Poor oral intake and ADL decline: Suggests acute decompensation requiring supportive care and investigation

Immediate Management Algorithm

In Emergency Department:

1. Obtain vital signs and establish IV access - address hypotension immediately
2. Order imaging: AP pelvis with internal rotation and cross-table lateral hip radiographs 2
3. Laboratory workup: CBC (baseline hemoglobin for transfusion decisions), basic metabolic panel, ECG
4. Pain control: Adequate analgesia to facilitate examination and imaging
5. If radiographs negative but high suspicion: Obtain MRI hip without contrast same day or next morning 1, 2

Upon Admission:

1. Orthogeriatric consultation: Immediate involvement for medical optimization 1
2. Investigate hypotension: Rule out bleeding, sepsis, cardiac causes
3. Evaluate headache: Consider CT head if any concern for intracranial pathology
4. VTE prophylaxis: Sequential compression devices immediately 1
5. Target surgery within 24-48 hours if fracture confirmed and patient medically optimized 1

Critical Pitfalls to Avoid

• Do not discharge based on negative initial radiographs alone - occult hip fractures are common in elderly patients and require MRI for definitive exclusion 1
• Do not attribute hypotension solely to pain or dehydration - investigate thoroughly for life-threatening causes
• Do not delay admission for "outpatient workup" - the combination of immobility, hypotension, and functional decline in an octogenarian is a medical emergency
• Do not overlook the headache - while hip pain may dominate, new headache with systemic symptoms requires evaluation

The mortality risk from untreated hip fracture combined with hemodynamic instability makes outpatient management unconscionable in this scenario.