Diltiazem Prophylaxis for the Prevention of Atrial Fibrillation in Patients Undergoing Thoracoabdominal Esophagectomy: A Retrospective Cohort Study

Author:

Hochreiter Marcel,Schmidt Thomas,Siegler Benedikt H.,Sisic Leila,Schmidt Karsten,Bruckner Thomas,Müller-Stich Beat P.,Diener Markus K.,Weigand Markus A.,Büchler Markus W.,Busch Cornelius J.

Abstract

Abstract Background Atrial fibrillation (AF) represents the most frequent arrhythmic disorder after thoracoabdominal esophageal resection and is associated with a significant increase in perioperative morbidity and mortality. Methods In this retrospective cohort study, 167 patients who underwent thoracoabdominal esophagectomy at a large university hospital were assessed. We compared patients who received a 14-day postoperative course of diltiazem with a control group of patients who did not undergo diltiazem prophylaxis. Diltiazem therapy started immediately upon admission to the intensive care unit (ICU) with a loading dose of 0.25 mg/kg bodyweight (i.v.) followed by continuous infusion (0.1 mg/kg bodyweight/h) for 40–48 h. Oral administration (Dilzem® 180 mg uno retard, once a day) was started on postoperative day 3. Results A total of 117 patients were assessed. Twelve (10.3%) of all patients developed postoperative new-onset atrial fibrillation in the first 30 days after surgical intervention. Prevalence of new-onset AF showed no significant differences between the diltiazem group and control group (p = 0.74). The prevalence of bradycardia (14.7% vs. 3.6%; p = 0.03) and dose of norepinephrine required (0.09 vs. 0.04 µg/kg bodyweight/min; p = 0.04) were higher in the diltiazem group. There were no significant differences between the groups for the median postoperative duration of hospital/ICU stay or mortality. Conclusions A prophylactic 14-day postoperative course of diltiazem was not associated with a reduction in new-onset AF or 30-day mortality following thoracoabdominal esophagectomy. Prophylactic diltiazem therapy was associated with drug-related adverse effects such as bradycardia and increased requirement of norepinephrine. German Clinical Trial Registration Number: DKRS00016631.

Publisher

Springer Science and Business Media LLC

Subject

Surgery

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