Back to Opioid Equivalents and Dose Conversions
The correct answer is 1.25mg/hour of subcutaneous morphine.
To calculate the dosage, first calculate the patient's total daily requirement of oral morphine (90mg). Then divide the oral dosage by three to obtain a daily IV or SC dosage (90 mg / 3 = 30mg). Finally, divide the daily SC dosage by 24 hours to obtain the proper hourly dosage (30mg/24 hours = 1.25mg/hour).