Preoperative analgesic medications

Morphine

Note: always check the prescribing information and your local formulary.

Administration IV
Starting dose 1 mg
Frequency Every 30 min until pain control is achieved
Afterwards every 2–4 hours
Monitoring
Comments Adverse effects increase in patients with renal impairment (eGFR < 35 mL/min).
Consider opioids that are less dependent on renal elimination (oxycodone, hydromorphone).

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