Parenteral morphine prescribing patterns among inpatients with pain from advanced cancer: a prospective survey of intravenous and subcutaneous use.

Prescribing patterns for parenteral morphine for symptom control in advanced cancer were studied in 50 consecutive hospital admissions (27 men, 23 women, median age, 62 years). Patients were interviewed daily (median time, 9 days) concerning analgesia while they were receiving parenteral morphine. Five major inpatient prescribing patterns were identified: (1) intravenous to oral, (2) intravenous to subcutaneous, (3) intravenous only, (4) subcutaneous only, and (5) mixed.