The Impact of Transversus Abdominis Plane Block Within an Enhanced Recovery After Surgery Protocol on Length of Stay

BACKGROUND: Multimodal, narcotic-sparing analgesic strategies are an important part of enhanced recovery after surgery protocols. Within such protocols, regional anesthetics have proven to be superior to narcotics. OBJECTIVE: This study aimed to evaluate the impact of the transversus abdominis plane block within an enhanced recovery after surgery protocol on length of stay. DESIGN: A retrospective analysis of patients who underwent colorectal surgery in 2015 to 2016 was completed. The primary end points for this analysis were total length of stay and total narcotics consumed during hospitalization. Length of stay and total narcotic use were compared for patients who received a transversus abdominis plane block versus those that did not. DATA SOURCE: The data were obtained from the data warehouse of a university teaching hospital. SETTINGS: This study took place at a university teaching hospital. PATIENTS: The patients were 18 years or older. MAIN OUTCOME MEASURES: The primary outcomes measured were length of stay and the total narcotics used. RESULTS: A total of 347 patients underwent colorectal procedures under the enhanced recovery protocol. Among these, 186 (54%) received a transversus abdominis plane block. Overall, the mean length of stay was 5.8 days (SD +/- 5.6), and median length of stay was 4 days. These values compare to a mean length of stay of 9.6 days and median length of stay of 7 days before implementing the enhanced recovery protocol. Patients who received a transversus abdominis plane block had a mean length of stay of 5.1 days compared to 6.6 days for those who did not receive one (p < 0.01). Patients who received a transversus abdominis plane block consumed 736.5 morphine milligram equivalents of opioids compared to 1150.3 morphine milligram equivalents of opioid consumed by those without a transversus abdominis plane block (p < 0.05), a 36% decrease in opioid use. When comparing patients who had a mean length of stay of 4 days with those whose length of stay was >4 days, there was an 80% decrease in opioid use. The readmission rate was 7.8%. LIMITATIONS: The lack of randomization of patients was a limitation of this study. CONCLUSION: The use of transversus abdominis plane block in the setting of a well-structured enhanced recovery protocol was associated with a statistically significant decrease in length of stay by 1.5 days and a 36% decrease in narcotic use. See Video Abstract at http://links.lww.com/DCR/B432.