Management of Complex Polypharmacy in an Older Adult with Multimorbidity
This patient requires immediate comprehensive medication review with systematic deprescribing, prioritizing patient-centered goals over disease-specific guideline adherence, as applying multiple single-disease guidelines to older adults with multimorbidity is cumulatively impractical and potentially harmful. 1
Immediate Priority Actions
Medication Reconciliation and Risk Assessment
- Conduct an urgent medication review focusing on the 19 active medications (excluding PRN medications), as patients taking 5 or more medications average 1 significant drug problem, and this patient is taking nearly 4 times that threshold 1
- Identify potentially inappropriate medications using a multidisciplinary team approach involving the primary physician, pharmacist, and nursing staff 1
- The current regimen includes multiple high-risk medications for older adults: morphine sulfate ER, oxycodone-acetaminophen (both scheduled and PRN), pregabalin, duloxetine, and oxybutynin—all of which increase fall risk, cognitive impairment, and adverse events 1, 2
Address Vitamin D Deficiency Immediately
- The patient's 25-OH Vitamin D level of 18 ng/mL indicates deficiency (goal >30 ng/mL), yet she is only receiving 50,000 IU monthly, which is inadequate 3
- Increase vitamin D3 supplementation to 2,000-4,000 IU daily (or 50,000 IU weekly for 8 weeks, then 1,000-2,000 IU daily maintenance) to achieve sufficiency, as vitamin D deficiency causes muscle weakness, increases fall risk, and compromises osteoporosis treatment efficacy 3
- The current monthly dosing of 50,000 IU provides only approximately 1,667 IU daily equivalent, which is below the 800-1,000 IU minimum needed for maintenance 3
Systematic Deprescribing Approach
Pain Management Optimization
This patient is on an excessive and dangerous opioid regimen with multiple overlapping pain medications:
- Morphine sulfate ER 15 mg every 12 hours (scheduled)
- Oxycodone-acetaminophen 5-325 mg at bedtime (scheduled)
- Oxycodone-acetaminophen 5-325 mg every 6 hours PRN
- Pregabalin 75 mg three times daily
- Lidocaine patches
- Topical menthol-methyl salicylate
Recommended deprescribing strategy 1:
- Eliminate the scheduled bedtime oxycodone-acetaminophen immediately—there is no justification for both scheduled long-acting morphine AND scheduled short-acting oxycodone 1
- Reduce morphine sulfate ER to 7.5 mg every 12 hours and reassess pain control weekly, with goal of further reduction or discontinuation 1
- Continue pregabalin 75 mg three times daily for neuropathic pain, as this is appropriate dosing 1
- Retain topical agents (lidocaine patches, menthol-methyl salicylate) as they have minimal systemic effects
- Keep PRN oxycodone-acetaminophen but limit to maximum 2 doses daily with strict monitoring of total acetaminophen intake (<3 grams/24 hours) 1
Anticholinergic Burden Reduction
- Discontinue oxybutynin 5 mg every 8 hours immediately—this is a high-risk anticholinergic medication in older adults that increases fall risk, cognitive impairment, and delirium 1, 2
- If overactive bladder symptoms persist after discontinuation, consider behavioral interventions first (timed voiding, fluid management) before any pharmacologic alternative 1
Cardiovascular Medication Review
Current regimen:
- Amlodipine 10 mg daily
- Aspirin 81 mg daily
- Simvastatin 40 mg daily (but only taking 20 mg according to order)
- Nitroglycerin PRN
- Amlodipine 10 mg is appropriate for this patient's blood pressure control, though elderly patients have 40-60% increased AUC and may require lower doses 4
- Clarify the simvastatin dosing discrepancy—order states 40 mg tablet but "give 20 mg," which creates confusion and medication error risk 1
- Continue aspirin 81 mg daily for CAD secondary prevention 1
- Monitor for drug interactions: amlodipine increases simvastatin exposure by 77%, increasing myostatin toxicity risk (note CPK is already low at 27 U/L, below normal range) 4
Respiratory Medications
- Continue albuterol HFA and ipratropium-albuterol nebulizer PRN for COPD/asthma management—these are appropriate 1
Gastrointestinal Medications
Current regimen includes excessive bowel management:
- Senna-S twice daily (scheduled)
- GlycoLax (polyethylene glycol) daily (scheduled)
- Milk of Magnesia PRN
Recommended approach 1:
- Reduce to single scheduled agent: Continue GlycoLax 17 grams daily only
- Discontinue scheduled Senna-S—the combination of scheduled stimulant laxative plus osmotic laxative is excessive 1
- Retain Milk of Magnesia PRN for rescue use only (no BM in 3 days)
- Note: Opioid reduction will decrease constipation burden significantly 1
Psychiatric Medications
- Continue duloxetine 20 mg twice daily for depression—this is appropriate dosing and addresses both depression and chronic pain 1
- Continue Zofran PRN for nausea/vomiting
Osteoporosis Management
- Continue alendronate (Fosamax) 70 mg weekly—this is appropriate for osteoporosis treatment 3
- Ensure adequate calcium and vitamin D supplementation (addressed above) to maximize bisphosphonate efficacy 3
- Current calcium carbonate-vitamin D 500-200 mg-unit daily is inadequate; increase to calcium 1,200 mg daily total (including dietary sources) 3
Laboratory Abnormalities Requiring Action
Mild Anemia
- Hemoglobin 11.8 g/dL (low) with normal MCV, MCH, MCHC suggests anemia of chronic disease 5
- Check iron studies, B12, and folate to rule out nutritional deficiencies
- Consider contribution from chronic NSAID use (if any) or GI blood loss
Low Creatinine
- Creatinine 0.54 mg/dL (low) likely reflects sarcopenia and low muscle mass, common in older adults with chronic pain and limited mobility 5
- eGFR 92 mL/min/1.73m² is reassuring for kidney function
- This patient may be more sensitive to renally cleared medications despite "normal" eGFR 4
Low Total Protein and Albumin
- Total protein 6.1 g/dL (low) and albumin 3.6 g/dL (low-normal) suggest poor nutritional status or chronic inflammation 5
- Obtain nutritional assessment and consider dietary supplementation
- Low albumin affects protein binding of highly bound drugs like amlodipine (93% protein bound), potentially increasing free drug levels 4
Lipid Panel
- Total cholesterol 138 mg/dL, LDL 74 mg/dL, HDL 41.7 mg/dL (low)
- LDL is at goal for CAD (<100 mg/dL), but low HDL increases cardiovascular risk 1
- Current simvastatin dose appears adequate for LDL control
Hypertension Management
- Current blood pressure is not provided in the data, but patient is on amlodipine 10 mg daily for essential hypertension 1
- Target blood pressure for this elderly patient should be <140/90 mmHg, individualized based on frailty status 1
- Amlodipine monotherapy is appropriate for elderly patients and those with multiple comorbidities 1, 4
- Monitor for peripheral edema, a common side effect of dihydropyridine calcium channel blockers 4
Patient-Centered Goals of Care
Shift from disease-specific to patient-centered approach 1:
- Primary goals should be: maintaining functional independence, controlling pain adequately without oversedation, preventing falls, preserving cognitive function, and reducing treatment burden 1
- Life extension may be less important than quality of life and symptom control in this 79-year-old with multiple comorbidities 1
- Engage patient and family in collaborative goal-setting to align treatment with patient values and preferences 1
Multidisciplinary Team Coordination
Implement team-based care 1:
- Pharmacist: Conduct comprehensive medication review, identify drug-drug interactions, monitor for adverse effects
- Nursing: Assess functional status, fall risk, pain control, medication adherence
- Physical therapy: Evaluate mobility, fall risk, and implement fall prevention strategies
- Dietitian: Address nutritional deficiencies (low albumin, vitamin D deficiency)
- Primary physician: Coordinate care, make final prescribing decisions, communicate with specialists
Monitoring Plan
After implementing medication changes 1:
- Week 1-2: Daily assessment of pain control, sedation, fall risk, bowel function
- Week 4: Reassess pain scores, functional status, medication adherence
- Month 3: Repeat vitamin D level (goal >30 ng/mL), CBC, comprehensive metabolic panel
- Ongoing: Monitor for withdrawal symptoms from opioid reduction, anticholinergic discontinuation effects
Critical Safety Warnings
- This patient is at extremely high risk for falls due to polypharmacy (19 medications), opioids, pregabalin, duloxetine, and oxybutynin 1, 2
- Cognitive impairment risk is elevated from anticholinergic burden (oxybutynin) and CNS depressants (opioids, pregabalin) 1, 2
- Drug-drug interactions are likely given the complexity of the regimen—amlodipine increases simvastatin levels, multiple CNS depressants potentiate sedation 4
- Approximately 47% of patients continue medications after care transitions without clear indication—active deprescribing planning is essential 2
Common Pitfalls to Avoid
- Do not apply single-disease guidelines without integration—this leads to contradictory recommendations and polypharmacy 1, 6
- Do not assume all medications are necessary because they were prescribed by specialists—each medication should have a clear, current indication 1
- Do not delay deprescribing due to fear of withdrawal or disease worsening—the harms of polypharmacy often outweigh these risks 1
- Do not ignore patient preferences—some patients prioritize alertness and function over complete pain control 1
- Do not forget to reassess at every care transition (hospital admission, discharge, nursing home placement) 2, 5