Abstract
BackgroundDiabetes mellitus (DM) is known to be a risk factor for postoperative infectious complications (PICs). However, the significance of postoperative hyperglycemia in non-DM cases has not been well investigated. We sought to establish whether postoperative hyperglycemia is associated with PICs and survival among patients with esophageal cancer, with a focus on non-DM cases. MethodsA total of 430 patients who underwent subtotal esophagectomy for esophageal cancer between 2014 and 2018 were enrolled. Postoperative blood glucose was measured by arterial blood gas test every 8 h from postoperative day (POD) 1 to POD4. The association between hyperglycemia (mean ≥ 200 mg/dl) and PICs or long-term outcomes on each POD was investigated. ResultsThere were 53 DM and 377 non-DM cases. PICs occurred in 127 patients. In the multivariate analysis of all cases, PICs were associated with hyperglycemia on POD1 or -2 (odds ratio [OR] = 1.69, 95% CI, 1.05–2.73, P = 0.031 for POD1; OR = 2.55, 95% CI, 1.10–5.93, P = 0.029 for POD 2). Among non-DM cases, the association was more evident, and persisted until POD4 (OR = 1.94, 95% CI, 1.16–3.24, P = 0.012 for POD1; OR = 3.68, 95% CI, 1.28–10.6, P = 0.016 for POD2; OR = 3.07, 95% CI, 1.11–8.51, P = 0.031 for POD4). Survival analyses limited to R0 cases revealed hyperglycemia on POD2 as an independent prognostic factor in all cases (N = 412) [hazard ratio (HR) = 2.61, 95%CI, 1.21–5.63, P = 0.014], with the prognostic impact more evident among non-DM cases (N = 360) (HR = 4.38, 95% CI, 1.82–10.57, P = 0.0010). ConclusionPostoperative hyperglycemia is associated with PICs and worse survival after esophagectomy, particularly in patients without DM.
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