News Release


PHILADELPHIA—The majority of patients who followed an “Enhanced Recovery After Surgery” (ERAS) protocol did not need opioids for pain management at multiple time points following elective spinal and peripheral nerve surgery. The findings come from an expanded analysis and study from researchers in the Perelman School of Medicine at the University of Pennsylvania, published in Pain Medicine. Researchers found that when an ERAS protocol was employed—which optimizes patients’ surgical care before, during, and after surgery—fewer patients needed pain medications at one, three, and six months after surgery.

The ERAS protocol developed at Penn includes a personalized, safe, and effective pain management plan to help prevent opioid addiction, which is an ongoing public health crisis in the United States. ERAS engages patients in their care before, during, and after their hospitalization—this process includes patient education, text reminders, nutrition information, early mobilization, and recovery plans. ERAS also relies on collaborative care between all individuals involved in the patient’s surgical journey, including anesthesiologists, rehabilitation therapists, nurses, and neurosurgeons, to improve clinical outcomes and optimize a safe recovery.

“We know from our clinical experience and previous literature that programs like ERAS work, but we didn’t expect the impact on opioid use to be so sizeable,” said senior author Zarina S., Ali, MD, an assistant professor of Neurosurgery at Penn. “The most important outcome from this study is the decrease in opioid use. Furthermore, patients following the ERAS protocol reported less opioid use without higher pain scores. This represents an important advance in the context of the current nationwide opioid epidemic.”

Zarina S., Ali, MD

For this study, a total of 1,141 patients were enrolled in the ERAS protocol, compared to 149 historical controls who received the standard of care. Both groups had similar surgical procedures and demographics. Preliminary findings summarizing opioid use after one month of the ERAS protocol were published in the Journal of Neurosurgery: Spine in 2019. This Pain Medicine paper reports on continued benefits over an 18-month period utilizing the ERAS pathway in elective spinal and peripheral nerve surgery.

The researchers found a significant reduction in use of opioids by following the ERAS protocol at one, three, and six months following surgery—only 38.6 percent of those following ERAS needed pain medications one month after surgery, whereas 70.5 percent of the control group needed pain medications at one-month post-op. At three months after surgery, 36.5 percent in the ERAS cohort needed pain medication, compared to 70.9 percent of the controls, and six months after surgery only 23.6 percent of patients following the ERAS protocol needed pain medication, compared to 51.9 percent in the control group. 

Tracy M. Flanders, MD

In addition to the significant reduction of opioid use, use of patient-controlled analgesia (PCA)—known as a pain pump—was nearly eliminated in the ERAS group (1.4 percent) compared to 61.6 percent of patients in the control group. ERAS patients were up and moving faster compared to control patients (63.5 percent vs. 20.7 percent), fewer ERAS patients required postoperative catheterization (40.7 percent vs 32.7 percent), and the ERAS group also had shorter hospital stays (3.4 vs. 3.9 days).

“Previous publications have demonstrated ERAS implementation in neurosurgery practices primarily through minimally invasive spinal surgery, but our neurosurgical practice has been actively applying ERAS principles to elective spine and peripheral nerve surgery since 2017, in coordination with a variety of departments across the health system,” said Tracy M. Flanders, MD, first author and Neurosurgery resident at Penn. “This study captures the exciting benefits of this protocol for minimizing opioid use, decreasing length of stay, and more—without impacting patient satisfaction.”

Additional Penn co-authors include Joseph Ifrach, Saurabh Sinha, Disha S. Joshi, Ali K. Ozturk, Neil R. Malhotra, Rachel Pessoa, Michael J. Kallan, Lee A. Fleisher, Michael A. Ashburn, Eileen Maloney, and William C. Welch.

Penn Medicine is one of the world’s leading academic medical centers, dedicated to the related missions of medical education, biomedical research, excellence in patient care, and community service. The organization consists of the University of Pennsylvania Health System and Penn’s Raymond and Ruth Perelman School of Medicine, founded in 1765 as the nation’s first medical school.

The Perelman School of Medicine is consistently among the nation's top recipients of funding from the National Institutes of Health, with $550 million awarded in the 2022 fiscal year. Home to a proud history of “firsts” in medicine, Penn Medicine teams have pioneered discoveries and innovations that have shaped modern medicine, including recent breakthroughs such as CAR T cell therapy for cancer and the mRNA technology used in COVID-19 vaccines.

The University of Pennsylvania Health System’s patient care facilities stretch from the Susquehanna River in Pennsylvania to the New Jersey shore. These include the Hospital of the University of Pennsylvania, Penn Presbyterian Medical Center, Chester County Hospital, Lancaster General Health, Penn Medicine Princeton Health, and Pennsylvania Hospital—the nation’s first hospital, founded in 1751. Additional facilities and enterprises include Good Shepherd Penn Partners, Penn Medicine at Home, Lancaster Behavioral Health Hospital, and Princeton House Behavioral Health, among others.

Penn Medicine is an $11.1 billion enterprise powered by more than 49,000 talented faculty and staff.

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