True about oculocardiac reflex –
Correct Answer: Decrease heart rate by traction on medial rectus
Description: Ans. is 'd' i.e., Decrease heart rate by traction on medial rectus Oculocardiac reflexo Traction on the extraocular muscles or pressure on globe (eye ball) causes bradycardia, AV block, ventricular ectopy or asystole. It is especially seen with traction on the medial rectus, but can occur with stimulation of any of the orbital contents, including the periosteumo The reflex is trigeminovagal, i.e., afferent is via trigeminal and efferent is via vagal pathwayo The oculocardiac reflex is most common in pediatric patients undergoing strabismus surgery. Nonetheless, it can be evoked in all age groups and during a variety of ocular procedures including cataract extraction, enucleation, and retinal detachment repair.o Anticholinergic drugs (atropine, glycopyrrolate) is often helpful in preventing oculocardiac reflex.o Management of oculocardiac reflex includes cessation of surgical stimulus; adequate ventilation, oxygenation & anesthesia; intravenous atropine; infiltration of rectus muscles with local anesthetic.
Category:
Physiology
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now