Background: Catheter-based regional analgesia has been proposed as an alternative to systemic analgesia for patients with multiple rib fractures (MRF). This study sought to compare the efficacy of regional techniques for decreasing pain and improving clinical outcomes. Study design: This was a multi-institutional, retrospective cohort study of adult (≥18 years) patients admitted to four nonacademic trauma centers over two years (from 07/1/2014 to 06/30/2016). Study inclusion was MRF (≥3 fractures) with no other severe injuries. Two primary regional analgesia techniques were utilized and compared: continuous intercostal nerve blocks (CINB) and epidural (EPI) analgesia. The primary outcome, average pain scores on treatment, was examined using a repeated measures, linear regression mixed model. Secondary outcomes included hospital LOS, ICU LOS, ICU admission and hospital readmission, pulmonary complications, and incentive spirometry volumes during treatment, and were examined with univariate statistics. Results: There were 339 patients with isolated MRF; 85 (25%) required regional analgesia (CINB, n=41; EPI, n=44) and the remaining 75% received systemic analgesia only (IV, n=195; PO, n=59). There were demographic and clinical differences between regional analgesia and systemic analgesia groups; on the contrary, there were no demographic or clinical differences between the CINB and EPI groups. Adjusted pain scores were similar for the EPI and CINB groups (4.0 vs 4.4, p =0.49). Secondary outcomes were worse in the EPI group compared to the CINB group: less improvement in incentive spirometry volume ( p =0.004), longer ICU LOS ( p =0.03), longer hospital LOS ( p <0.001), and more ICU admission ( p <0.001). Conclusion: In patients requiring regional analgesia, pain management was equivalent with CINB and EPI, but CINB was associated with significantly better clinical outcomes. CINB might offer an efficient alternative for pain control in patients with MRF.

BackgroundDamage control laparotomy (DCL) is a life-saving procedure in patients with abdominal hemorrhage. After DCL, patients are sometimes left with an open abdomen (OA) so they may undergo multiple exploratory laparotomies (EXLAP), or re-explorations. Patients with OA are at increased risk of infectious complications (ICs). The association between number of re-explorations after DCL and the number of ICs is not clear. We hypothesized that each additional re-exploration increases the risk of developing IC.MethodsThis 6-year retrospective cohort study included patients aged ≥16 years from the NTDB who had DCL defined as EXLAP within 2 hours of arrival (ICD-9: 54.11, 54.12, 54.19) with at least one re-exploration. The primary outcome was IC (ie, superficial surgical site infection (SSI), organ space SSI, deep SSI, sepsis, pneumonia, or catheter-related bloodstream infection), examined dichotomously (present/absent) and ordinally as the number of ICs. Multivariate Poisson regression was used to assess the association between number of re-explorations and number of ICs. Significance was assigned at p<0.01.ResultsThere were 7431 patients who underwent DCL; 2509 (34%) patients developed at least one IC. The rate of IC was lowest in patients who were closed during the first re-exploration (27%) and significantly increased with each re-exploration to 59% in patients who had five or more re-explorations (Cochran-Armitage trend p<0.001). After adjustment, there was 14% increased risk of an additional IC with each re-exploration (p<0.001).DiscussionFor patients requiring DCL, each re-exploration of the abdomen is associated with increased rate of ICs.Level of evidenceIII, retrospective epidemiological study.

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The effects of lymphography on ventilatory function and gas transfer factor were studied in nine patients. Serial measurements made up to one month showed no change in the forced expiratory volume in one second or vital capacity. A small but reversible fall in transfer factor was found. The greatest reduction was at 24 or 48 hours. It was concluded that patients with normal lungs are unlikely to encounter difficulties but that patients with severe lung disease require careful assessment before lymphography.