Retracted Article: The Effect of Dexmedetomidine and Esmolol on Early Postoperative Cognitive Dysfunction After Middle Ear Surgery Under Hypotensive Technique: A Comparative, Randomized, Double-blind Study

How to Cite:Mahmoud Hussein BahrDoaa Abu Elkassim RashwanSamaa A KasemRetracted Article: The Effect of Dexmedetomidine and Esmolol on Early Postoperative Cognitive Dysfunction After Middle Ear Surgery Under Hypotensive Technique: A Comparative, Randomized, Double-blind Study.Anesth Pain Med.11(1):e107659.https://doi.org/10.5812/aapm.107659.

Abstract

Objectives:

Postoperative cognitive dysfunction (POCD) is multifactorial, which may be caused by anesthetic and surgical causes or cerebral injury. This study aimed to evaluate the effect of dexmedetomidine as a neuroprotective drug compared to esmolol on the prevalence of POCD in adult patients undergoing middle ear surgeries under hypotensive anesthesia.

Methods:

This study included male and female adult patients, according to American Society of Anesthesiology physical status (ASA) I, the patients who underwent middle ear surgeries under hypotensive anesthesia were randomly assigned to two groups that received esmolol and dexmedetomidine. The demographic data, heart rate, mean arterial blood pressure, duration of the surgery, evaluation of the surgical field, and the Mini-Mental State Examination (MMSE) (preoperatively and at 1, 6 and 24 hours postoperatively) were recorded.

Results:

There was a significant difference between the numbers of patients who had POCD in MMSE1: 12 cases in the esmolol group (41.37%) compared to three cases in the dexmedetomidine group (10.34%) (P = 0.016), in MMSE6: 10 cases in the esmolol group (34.48%) compared with two cases in the dexmedetomidine group (6.89%) (P = 0.023) and in MMSE24: seven cases in the esmolol group (24.13%) compared with one case in the dexmedetomidine group (3.44%) (P = 0.022), while the median and range of MMSE score were comparable between the two groups (P > 0.05).

Conclusions:

This study suggests that intraoperative use of dexmedetomidine as an adjuvant to hypotensive anesthesia reduces the incidence of POCD compared to esmolol.

Keywords

Dexmedetomidine

Esmolol

Postoperative Cognitive Dysfunction

Hypotensive Anesthesia

Acknowledgments

Footnotes

Authors' Contribution: Mahmoud Hussein Bahr designed the protocol and carried out the clinical parts, writing, and revision of the article; Doaa Abou Elkassim Rashwan collected the resources, revising the manuscript; Samaa A.kasim revised the data analysis, collecting the background resources, and writing the article; The authors read and approved the final manuscript.
Clinical Trial Registration Code: ClinicalTrials.gov (ClinicalTrials.gov ID: NCT03892512).
Conflict of Interests: No potential conflict of interest relevant to this article was reported.
Ethical Approval: The study was performed in compliance with the Helsinki Declaration after approval of the Research Ethical Committee of Beni-Suef University Hospitals.
Funding/Support: The authors received no financial supports.
Informed Consent: Written informed consent was obtained from all patients.

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Author(s):

Mahmoud Hussein Bahr:[PubMed][Scholar]
Doaa Abu Elkassim Rashwan:[PubMed][Scholar]
Samaa A Kasem:[PubMed][Scholar]