• Frances Williamson, Jacelle Warren, and Cate M Cameron.
• Trauma Service, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia; Faculty of Medicine, The University of Queensland, Herston, Queensland, Australia; Jamieson Trauma Institute, Royal Brisbane and Women's Hospital, Metro North Hospital and Health Service, Herston, Queensland, Australia. Electronic address: Frances.Williamson@health.qld.gov.au.
• Injury. 2022 Jan 1; 53 (1): 145-151.

BackgroundOpiates are frequently used in the inpatient management of chest wall injury following blunt trauma. However, the daily sum of opiates used during acute care, and the impact that additional injuries or rib fracture displacement may have on daily opiate requirement is unknown.MethodsA retrospective sample of 85 adult patients admitted to a tertiary trauma centre between April 2018 and October 2019 after a major chest wall injury (Abbreviated Injury Scale >2) and referral to Acute Pain Management Service was used in this study. Daily opiate usage was calculated each day for the first seven days following initial admission and converted to morphine milliequivalents (MME). Additional adjunct analgesia therapy was also recorded each day. The presence of rib fracture displacement and concurrent clavicle/scapular fractures was also noted. A comparison of the average daily MME for the various subgroups of interest was performed.ResultsThe maximum average MME in patients with rib fractures typically occurs at day 2 post injury and admission, with the highest day 2 average MME being in the Patient Controlled Analgesia (PCA) and ketamine subgroup. Presence of rib displacement delayed the onset of maximal MME to day 3 and resulted in higher average MME over the total seven days. Patients with concurrent clavicle or scapular fractures also had higher average MME each day, regardless of the addition of a regional block.ConclusionsThis study has demonstrated the daily opioid requirement is maximal on day 2 post-admission following isolated major chest wall injury. The addition of a regional block resulted in a reduction of the average MME used each day over the first seven days post-admission, compared to ketamine when added to PCA. The presence of displaced rib fractures or clavicle/scapular fractures increased the MME used each day, changed the day of peak consumption and increased the average daily opioid requirement during acute hospitalisation.Copyright © 2021. Published by Elsevier Ltd.

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