Oculocardiac reflex (OCR)is an intraoperative emergency that can occur during eye surgery.It is characterized by bradycardia that can lead to asystole,hypotension,and a wide range of other dysrhythmias attributable to negative inotropic and conduction effects.Select the definition of the response and contributing factor(s).
A) Trigeminal-vagal response caused by pressure on the globe or retrobulbar block
B) Increased intracranial pressure response to traction on extraocular muscles
C) Adrenergic response to effect of retrobulbar block on the pituitary
D) Lidocaine toxicity caused by intravascular uptake of retrobulbar anesthetic

Question

Quizplus · Accepted Answer

The most common symptom of OCR is sinus bradycardia,which can lead to asystole.The patient may become hypotensive and may experience a trigeminal-vagal response caused by pressure on the globe,traction on extraocular muscles,or retrobulbar block.The incidence of reported OCR ranges from 32% to 90%;in as many as 1 in 2200 strabismus surgeries,transient cardiac arrest may ensue.

Oculocardiac Reflex (OCR)is an Intraoperative Emergency That Can Occur During