# A 78-year-old client with painful diabetic neuropathy, history of glaucoma, prostatic hypertrophy, and prior fall is sent to the clinic with a new order for amitriptyline 50 mg PO at bedtime for neuropathic pain. Which is the most appropriate initial nursing action?

> source: MyMerci (mymerci.kr)  
> url: https://mymerci.kr/pages/nclex_q.php?qn_id=375214&lang=en  
> language: en  
> subject: Medical Emergencies  
> category: PA

## Question

A 78-year-old client with painful diabetic neuropathy, history of glaucoma, prostatic hypertrophy, and prior fall is sent to the clinic with a new order for amitriptyline 50 mg PO at bedtime for neuropathic pain. Which is the most appropriate initial nursing action?

## Option

1. Administer half the prescribed dose tonight and assess tolerance; amitriptyline at 25 mg is a common starting dose for neuropathic pain in older adults, and gradual titration reduces side effects while offering therapeutic benefit. This strategy balances symptom control with safety, as lower doses minimize anticholinergic burden and orthostatic effects.
2. Administer the medication at bedtime as prescribed, because amitriptyline is effective for neuropathic pain; implement fall precautions, monitor for urinary retention, and instruct the client to report any visual changes, as these are manageable side effects. This approach addresses pain while minimizing risks through careful monitoring.
3. Obtain a baseline ECG and, if the QTc interval is normal, administer the dose; amitriptyline prolongs QT, but the risk is low at 50 mg, and pre-administration screening mitigates cardiac concerns, while other side effects can be monitored. This approach allows safe use of an effective analgesic while addressing the primary cardiovascular risk.
4. Hold the dose and contact the prescriber; amitriptyline is on Beers Criteria as potentially inappropriate in older adults — strong anticholinergic (worsens BPH and glaucoma), orthostatic hypotension and falls, sedation, and QT prolongation; suggest duloxetine or pregabalin, or if a TCA is needed, low-dose nortriptyline with ECG monitoring. **✔ Correct answer**

**Correct answer: 4**

## Explanation

Tricyclic antidepressants (TCAs) include tertiary amines (amitriptyline, imipramine, doxepin) and secondary amines (nortriptyline, desipramine). Tertiary amines have stronger anticholinergic, sedative, and cardiac effects and are listed by the American Geriatrics Society Beers Criteria as potentially inappropriate in adults 65 and older. Adverse effects relevant in this client: (1) anticholinergic — urinary retention (worsens BPH), increased intraocular pressure (worsens narrow-angle glaucoma; closed-angle is the absolute contraindication), dry mouth, constipation, blurred vision, cognitive impairment, delirium; (2) cardiovascular — orthostatic hypotension and falls, prolonged QT and risk of arrhythmia especially in overdose, conduction delay; (3) sedation; (4) lowered seizure threshold; (5) weight gain; (6) overdose lethality due to cardiotoxicity (Na channel blockade — wide QRS, hypotension, seizures); (7) suicidal ideation FDA black box for under age 25 antidepressants. Safer choices for neuropathic pain in older adults: duloxetine (SNRI), pregabalin or gabapentin, topical lidocaine or capsaicin. If TCA is required, nortriptyline is preferred at low starting dose with baseline ECG and cautious titration. Holding the dose and contacting the prescriber is the standard advocacy and safety action.

## In-depth explanation

Tertiary TCAs are Beers Criteria potentially inappropriate in older adults — anticholinergic, orthostatic, QT, sedation, fall, and cognitive harms. Hold and advocate for a safer alternative.

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