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Journals / Ankara Üniversitesi Veteriner Fakültesi Dergisi / 2026 / Volume: 72 Issue: 2

Evaluation of blink parameters obtained by electrical stimulation in general anaesthetised dogs

Mehmet Nur Çetin(BURDUR MEHMET AKİF ERSOY ÜNİVERSİTESİ, VETERİNER FAKÜLTESİ)0000-0003-2610-8477
Yusuf Sirin(BURDUR MEHMET AKİF ERSOY ÜNİVERSİTESİ, VETERİNER FAKÜLTESİ)0000-0003-1322-7290
Pages
—
Publication Date
2025-04-01
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The MAC value from which the RC value was obtained was found to be 0.88, and it was assumed that it could be accepted as the average MAC value at which the effect of general anesthesia was eliminated for dogs.

📌 3 Key Takeaways

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Objective & Hypothesis:The aim of this study was to evaluate the relationship between the blink reflex and general anesthesia in dogs.
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Key Findings & Data:In dogs anesthetized for the surgical procedure, anesthesia was kept constant at 2.9 MAC.
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Conclusion & Impact:The MAC value from which the RC value was obtained was found to be 0.88, and it was assumed that it could be accepted as the average MAC value at which the effect of general anesthesia was eliminated for dogs.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:blink reflex · dog · electromyography

Abstract

The aim of this study was to evaluate the relationship between the blink reflex and general anesthesia in dogs. Dogs brought for castration or ovariohysterectomy without any other problems were included in the study. In dogs anesthetized for the surgical procedure, anesthesia was kept constant at 2.9 MAC. Following the procedure, the supramaximal electrical stimulation was applied to the supraorbital nerve for every 0.1 MAC value decline, beginning at 2.9 end tidal MAC, and blink parameters were recorded from both orbicularis oculi muscles. The latency, amplitude, duration, and differential latency values of blink parameters obtained independently of MAC under general anesthesia were revealed. At the same time, it was also determined which blink parameters were obtained in which MAC value range. Previous studies have shown that the R2 and RC are highly affected by the level of consciousness, and the RC disappears under general anaesthesia. The R2 value was most commonly obtained between 1.1 and 1.0 MAC, but the dogs did not respond to any stimulus when the R2 value was obtained. However, since previous studies have shown that the level of consciousness affects R2 values, it was assumed that surgical anesthesia may have disappeared in the MAC ranges where this value was measured. The MAC value from which the RC value was obtained was found to be 0.88, and it was assumed that it could be accepted as the average MAC value at which the effect of general anesthesia was eliminated for dogs.

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Cite This Article

Çetin, M. N., Sirin, Y. (2025). Evaluation of blink parameters obtained by electrical stimulation in general anaesthetised dogs. Ankara Üniversitesi Veteriner Fakültesi Dergisi, Volume: 72 Issue: 2. https://doi.org/10.33988/auvfd.1396530

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