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The effect of anesthesia depth on the oculocardiac reflex in strabismus surgery

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Abstract

The aim of this study was to investigate the effect of the bispectral index (BIS) guided depth of anesthesia to inhibition of the oculocardiac reflex (OCR) during pediatric strabismus surgery. Patients between the ages of 3 and 16 years who were scheduled for elective strabismus surgery were randomly assigned to two groups. In Group 1 (n: 32), the BIS values of the patients were maintained at <50; in Group 2 (n: 28), the BIS values of the patients were maintained at levels greater than or equal to 50 with 4–7 % desflurane in a 50 % O2–air mixture by titrating the concentration during the surgery. The heart rates, presence of dysrhythmia, anticholinergic drug usage and the type of the operated extra ocular muscle were recorded. The incidence of OCR was 25 % in Groups 1 and 64.3 % in Group 2, (p < 0.05). Moreover, the incidence of OCR in group 2 was higher in medial rectus (MR) traction (78.9 %) than in lateral rectus (LR) traction (33.3 %) (p = 0.035), with no significant difference in Group 1 between MR (21.1 %) and LR (26.7 %) tractions (p = 0.83). We found that the lower BIS values are associated with the lower incidence of OCR in pediatric patients undergoing strabismus surgery. And our findings confirmed that the deeper anesthesia has a protective effect against the OCR.

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Acknowledgments

This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

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Authors and Affiliations

  1. Department of Anesthesiology and Reanimation, Gaziosmanpasa University School of Medicine, 60100, Tokat, Turkey

    Tugba Karaman, Serkan Dogru, Aynur Şahin, Hakan Tapar, Serkan Karaman, Ziya Kaya, Mustafa Suren & Semih Arici

  2. Department of Ophthalmology, Gaziosmanpasa University School of Medicine, Tokat, Turkey

    Selim Demir

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  1. Tugba Karaman
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  2. Selim Demir
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  3. Serkan Dogru
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  4. Aynur Şahin
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  7. Ziya Kaya
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Correspondence to Tugba Karaman.

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Karaman, T., Demir, S., Dogru, S. et al. The effect of anesthesia depth on the oculocardiac reflex in strabismus surgery. J Clin Monit Comput 30, 889–893 (2016). https://doi.org/10.1007/s10877-015-9789-1

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  • DOI: https://doi.org/10.1007/s10877-015-9789-1

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