• Robert H Blackshear and Kelli C Crosson.
• Skaggs Regional Medical Center, Department of Surgery and Anesthesiology, Branson, Missouri, USA. rossted@mac.com
• Pain Pract. 2010 May 1;10(3):235-44.

AbstractA retrospective analysis of 659 patients who had undergone a hip or knee arthroplasty was undertaken to determine the incidence of pulmonary embolism (PE) during the 48-hour period following surgery. Data related to pain control, concomitant medications, length of stay, and adverse reactions were also collated. Patients were evenly divided between those receiving extended-release epidural morphine (EREM: n = 327; mean dose 9.7 mg, range 5 mg to 15 mg) or a control group receiving other treatment for postoperative pain (control: n = 332; 44% of controls had an epidural catheter in place). The incidence of PE was significantly higher in the control group than in the EREM group (control: n = 6 or 1.80% vs. EREM: n = 0). Pain control (by a 10-point verbal numerical rating scale) was significantly improved in the EREM group compared with the control group 48 hours after surgery (2.3 +/- 1.8 vs. 4.7 +/- 2.6) and length of stay was significantly reduced (3.9 +/- 1.5 days vs. 4.5 +/- 2.0 days). Adverse event profiles of the EREM and control groups were consistent with prior published studies with EREM. The use of EREM following lower extremity joint arthroplasty may be associated with a significant reduction in the incidence of PE.

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