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Changes in arterial blood pressure during traction of extra‐ocular muscles. A study in rabbits

Indu Khurana, Atika Khurana, Poonam Singh, Kanti Kumar Gombar

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Abstract

A significant reflex fall in mean arterial blood pressure from baseline values was observed during extra-ocular muscle traction in rabbits. This effect could be abolished only by retrobulbar block (afferent pathway block) and not by vagotomy, intravenous atropine or glycopyrronium, suggesting that it is distinct from, and independent of, the oculocardiac reflex. We suggest that these reflex changes in blood pressure be known as the 'oculodepressor reflex'.

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What this paper is about

A significant reflex fall in mean arterial blood pressure from baseline values was observed during extra-ocular muscle traction in rabbits. This effect could be abolished only by retrobulbar block (afferent pathway block) and not by vagotomy, intravenous atropine or glycopyrronium, suggesting that it is distinct from, and independent of, the oculocardiac reflex. We suggest that these reflex changes in blood pressure be known as the 'oculodepressor reflex'.

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OpenAlex reports 5 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

A significant reflex fall in mean arterial blood pressure from baseline values was observed during extra-ocular muscle traction in rabbits. This effect could be abolished only by retrobulbar block (afferent pathway block) and not by vagotomy, intravenous atropine or glycopyrronium, suggesting that it is distinct from, and independent of, the oculocardiac reflex. We suggest that these reflex changes in blood pressure be known as the 'oculodepressor reflex'.

Key concepts: Medicine, Oculocardiac reflex, Reflex, Atropine, Blood pressure, Anesthesia, Reflex arc, Vagotomy

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