The effects of oral atenolol or enalapril premedication on blood loss and hypotensive anesthesia in orthognathic surgery

Na Young Kim, Young Chul Yoo, Duk Hee Chun, Hye Mi Lee, Young Soo Jung, Sun Joon Bai

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


Purpose: The aim of this study was to evaluate the effects of premedication with oral atenolol or enalapril, in combination with remifentanil under sevoflurane anesthesia, on intraoperative blood loss by achieving adequate deliberate hypotension (DH) during orthognathic surgery. Furthermore, we investigated the impact thereof on the amount of nitroglycerin (NTG) administered as an adjuvant agent. Materials and Methods: Seventy-three patients undergoing orthognathic surgery were randomly allocated into one of three groups: an angiotensin converting enzyme inhibitor group (Group A, n=24) with enalapril 10 mg, a β blocker group (Group B, n=24) with atenolol 25 mg, or a control group (Group C, n=25) with placebo. All patients were premedicated orally 1 h before the induction of anesthesia. NTG was the only adjuvant agent used to achieve DH when mean arterial blood pressure (MAP) was not controlled, despite the administration of the maximum remifentanil dose (0.3 μg kg−1min−1) with sevoflurane. Results: Seventy-two patients completed the study. Blood loss was significantly reduced in Group A, compared to Group C (adjusted p=0.045). Over the target range of MAP percentage during DH was significantly higher in Group C than in Groups A and B (adjusted p-values=0.007 and 0.006, respectively). The total amount of NTG administered was significantly less in Group A than Group C (adjusted p=0.015). Conclusion: Premedication with enalapril (10 mg) combined with remifentanil under sevoflurane anesthesia attenuated blood loss and achieved satisfactory DH during orthognathic surgery. Furthermore, the amount of NTG was reduced during the surgery.

Original languageEnglish
Pages (from-to)1114-1121
Number of pages8
JournalYonsei medical journal
Issue number4
Publication statusPublished - 2015 Jul 1

Bibliographical note

Publisher Copyright:
© Yonsei University College of Medicine 2015.

All Science Journal Classification (ASJC) codes

  • Medicine(all)


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