What pre‑operative evaluations and requirements are needed to clear a 68‑year‑old woman with hypertension, osteoarthritis, chronic obstructive pulmonary disease, pre‑diabetes, and gastro‑esophageal reflux disease for left knee repair surgery?

Pre-Operative Clearance for Left Knee Repair

This 68-year-old woman with prior cardiac clearance from [DATE] requires minimal additional testing beyond clinical assessment, blood pressure optimization, and perioperative medication management to proceed safely with left knee repair surgery.

Cardiovascular Assessment

Blood Pressure Management

• Continue all antihypertensive medications through the morning of surgery to maintain perioperative blood pressure control and reduce cardiovascular complications 1
• Verify that blood pressure is controlled below 180/110 mm Hg; if poorly controlled at these thresholds, consider deferring surgery for optimization 1
• Document baseline blood pressure and ensure intraoperative team maintains MAP ≥60-65 mm Hg or SBP ≥90 mm Hg to prevent myocardial injury 1
• Plan to restart antihypertensive medications as soon as clinically reasonable postoperatively, though exercise caution given her age ≥65 years and risk for perioperative hypotension 1

Cardiac Clearance Status

• No additional cardiac testing is needed given she received cardiac clearance from [PROVIDER] in [DATE] and reports no new cardiac symptoms (no chest pain, dyspnea beyond baseline, palpitations, dizziness, or syncope) 1, 2
• Her knee repair represents intermediate-risk noncardiac surgery, and recent clearance without interval symptom changes is sufficient 1

Pulmonary Optimization for COPD

Preoperative COPD Management

• Ensure COPD is optimally controlled with continuation of all maintenance inhalers (bronchodilators and inhaled corticosteroids if prescribed) through the day of surgery 3, 4
• Verify she has no active exacerbation (no increased dyspnea, sputum production, or wheezing beyond baseline) 3
• Consider short course of systemic corticosteroids only if COPD is poorly controlled or recent exacerbation 4
• Pulmonary function testing is not routinely required for knee surgery in stable COPD patients 2

COPD-Specific Perioperative Considerations

• COPD increases risk of postoperative pulmonary complications, but knee surgery carries lower pulmonary risk than thoracic or upper abdominal procedures 3, 4
• Regional anesthesia (spinal/epidural) is preferable to general anesthesia when feasible to reduce pulmonary complications 4, 2
• Ensure postoperative pain control plan minimizes opioid use (adductor canal block, multimodal analgesia) to prevent respiratory depression 5

Medication Management

NSAIDs and Anticoagulation

• Celecoxib discontinuation 3 days preoperatively is appropriate as instructed by [PROVIDER] to reduce bleeding risk 5
• Continue gabapentin through surgery for baseline pain control 5
• Hydrocodone-acetaminophen can be used postoperatively but minimize opioid exposure with multimodal pain management 5

Chronic Medications

• Continue all chronic medications (antihypertensives, COPD inhalers, GERD medications) through the perioperative period 1, 2
• Hold metformin (if prescribed for prediabetes) on morning of surgery and resume when eating normally postoperatively 2
• No specific medication adjustments needed for prediabetes unless on insulin or sulfonylureas 2

Laboratory and Diagnostic Testing

Required Testing

• Basic metabolic panel to assess renal function (baseline creatinine) and electrolytes, particularly given hypertension and age 6, 2
• Complete blood count to establish baseline hemoglobin given anticipated blood loss with knee surgery 5, 2
• Hemoglobin A1c to assess glycemic control in prediabetes, as poor control increases infection risk 7, 2

Not Routinely Required

• Chest radiograph is not indicated in stable COPD without new symptoms 2
• ECG is not mandatory given recent cardiac clearance and no interval symptoms, though reasonable given age >65 and hypertension 2
• Pulmonary function tests are not needed for stable COPD undergoing lower extremity surgery 2

Functional Status and Risk Stratification

Key Risk Factors Present

• Age 68 years, COPD, hypertension, and obesity (if BMI elevated) increase risk for length of stay >24 hours and postoperative complications 7
• Independent functional status is protective; she ambulates with unsteady gait when fatigued but denies falls, suggesting reasonable baseline function 7, 8
• Multiple comorbidities (hypertension, COPD, prediabetes) warrant close postoperative monitoring but do not contraindicate surgery 7, 9

Postoperative Planning

• Arrange walker and cane prescriptions as requested for safe postoperative mobilization 5
• Plan early mobilization with physical therapy starting postoperative day 0 or 1 5
• Consider tranexamic acid intraoperatively to minimize blood loss 5
• Anticipate 2-3 day hospital stay given age and comorbidities 7

Documentation for Surgical Clearance

Provide written clearance stating:

• Patient is medically optimized for left knee repair surgery
• Continue all chronic medications except celecoxib (held 3 days preoperatively as instructed)
• Blood pressure is controlled (document current BP)
• COPD is stable without active exacerbation
• Recommend regional anesthesia when feasible
• Maintain intraoperative MAP ≥60-65 mm Hg
• Plan multimodal analgesia to minimize opioids
• Arrange postoperative physical therapy and assistive devices (walker, cane) 1, 5, 2

Critical Perioperative Caveats

• The intersection of COPD and cardiovascular disease significantly increases perioperative risk; maintain vigilance for both pulmonary and cardiac complications 9
• Avoid perioperative hypotension (MAP <60 mm Hg) as this increases risk of myocardial injury, acute kidney injury, and stroke, particularly in elderly patients with hypertension 1
• Beta-blockers may be underprescribed in patients with COPD and cardiovascular disease due to concerns about bronchospasm, but cardioselective beta-blockers are generally safe and should be continued if already prescribed 10, 9
• COPD exacerbations significantly elevate cardiovascular event risk; any signs of exacerbation warrant surgery postponement until stabilized 9