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. 2022 Sep 1;5(9):e2229526.
doi: 10.1001/jamanetworkopen.2022.29526.

Association Between Daytime vs Overnight Digit Replantation and Surgical Outcomes

I-Chun F Lin  1 , Alfred P Yoon  1 , Lingxuan Kong  2 , Lu Wang  2 , Kevin C Chung  1
Affiliations

Association Between Daytime vs Overnight Digit Replantation and Surgical Outcomes

I-Chun F Lin et al. JAMA Netw Open. .

Abstract

Importance: Recent evidence suggests that select delayed replantation may not adversely affect digit survival; however, whether surgical timing (overnight or daytime) is associated with digit replantation outcomes is unknown.

Objective: To assess whether digit survival, complication rate, and duration of surgery are associated with time of replantation.

Design, setting, and participants: This retrospective case series study included all replantations performed at a single tertiary referral academic center between January 1, 2000, and August 1, 2021. Data were analyzed between October 2, 2021, and January 1, 2022. Four daytime surgery intervals were selected based on literature review. Daytime replantations started within the intervals whereas overnight replantations began outside the intervals. For each case, the procedure difficulty score and the attending surgeon expertise score were calculated. Logistic and linear regressions adjusting for confounders including procedure difficulty score and expertise score were used to assess surgical timing and outcomes. Participants were adults (aged ≥18 years) undergoing digit replantations between January 2000 and August 2021 with at least 1-month follow-up. Replantation was defined as the reattachment of a completely amputated digit that necessitated anastomosis of both artery and vein.

Exposures: Daytime or overnight digit replantation.

Main outcomes and measures: Viable replanted digit at 1-month follow-up, number of complications, and duration of surgery.

Results: A total of 98 patients (mean [SD] age, 39.5 [15.3] years; 136 [93%] men) and 147 digits met inclusion criteria. Overall success rate was 55%. Between 4 pm and 7 am, overnight replantations were associated with 0.4 fewer complications (β, -0.4; 95% CI, -0.8 to -0.1) and 90.7 minutes shorter operative time (β, -90.7; 95% CI, -173.6 to -7.7). A 1-point increase in surgeon expertise score was associated with 1.7 times increased odds of replantation success for all intervals (adjusted odds ratio, 1.7; 95% CI, 1.2 to 2.4; P = .002). There were no differences in digit survival by surgical time.

Conclusions and relevance: In this case series study of digit replantations, time of operation was not associated with replantation success. Overnight replantation was associated with fewer complications and shorter duration of surgery compared with daytime surgery. Results of this study suggest that overnight replantations may be performed with outcomes comparable to daytime replantations at a tertiary care academic center.

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Conflict of interest statement

Conflict of Interest Disclosures: Dr Chung reported receiving grants from National Institutes of Health, book royalties from Wolters Kluwer and Elsevier. No other disclosures were reported.

Figures

Figure.
Figure.. Patient and Digit Flow Diagram
See this image and copyright information in PMC

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