Home Clean Living Spinal anesthesia during THA may reduce pain scores, oral morphine equivalent use

Spinal anesthesia during THA may reduce pain scores, oral morphine equivalent use

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Source/Disclosures


Disclosures:
Abdel reports receiving royalties from Stryker and OsteoRemedies.


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Use of spinal anesthesia during total hip arthroplasty may reduce postoperative pain scores and oral morphine equivalent use compared with general anesthesia, according to published results.

“In this study of over 14,000 primary total hip arthroplasties completed at the Mayo Clinic, we found that spinal anesthesia was associated with reduced pain scores and oral morphine equivalents postoperatively. In addition, there were few altered mental status events and ICU admissions,” Matthew P. Abdel, MD, the Andrew A. and Mary S. Sugg Professor of Orthopedic Surgery and chair of the division of orthopedic surgery research at the Mayo Clinic in Rochester, Minnesota, told Healio.

Abdel and colleagues assessed patient-reported pain with the numeric pain rating scale (NPRS) and opioid utilization by oral morphine equivalents in a retrospective cohort of patients who underwent primary THA and received either general anesthesia (58%) or spinal anesthesia (42%) from 2001 to 2016. Researchers collected postoperative outcomes, including altered mental status events, blood transfusion requirements, postoperative urinary retention requiring catheterization, ICU admissions, 90-day venous thromboembolic events and 30- and 90-day readmissions, through an institutional anesthesia database using ICD-10 codes and admission transfer data. Researchers also collected arthroplasty-specific complications, such as all-cause revisions and all-cause reoperations. Researchers used an inverse probability of treatment-weighted model based on a propensity score that accounted for numerous patient and operative factors to analyze data.

Matthew P. Abdel

Matthew P. Abdel

Results showed a trend toward increased utilization of spinal anesthesia and decreased utilization of general anesthesia during the study period. Researchers found the maximum utilization of general anesthesia occurred in 2007 at 67% and the lowest recorded utilization occurred in 2015 at 47%, while the maximum utilization of spinal anesthesia occurred in 2015 at 53% and the lowest recorded utilization occurred in 2002 and 2007 at 33%.

At all evaluated time points, patients who received spinal anesthesia had lower NPRS scores and fewer postoperative oral morphine equivalents, according to results. Researchers also found a shorter hospital length of stay, fewer altered mental status events and fewer ICU admissions among patients who received spinal anesthesia. However, researchers noted no differences in the incidences of deep vein thrombosis, pulmonary embolism, 30- and 90-day readmissions, all-cause revisions or all-cause reoperations between the spinal and general anesthesia groups.

“In conclusion, the results of this study further support the use of spinal anesthesia in primary THAs when medically appropriate,” Abdel said. “This is particularly pertinent during a nationwide push to ambulatory surgery centers in the COVID-19 pandemic.”

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