OCULOCARDIAC REFELX IN STRABISMUS SURGERY UNDER GENERAL ANESTHESIA
Keywords:
General Anesthesia, Oculocardiac, Reflex, Anticholinergics, StrabismusAbstract
Objective: To compare the incidence of oculocardiac reflex with pre-medication, atropine sulphate, and without premedication
in strabismus (squint) surgery.
Material and Methods: This study was a randomized control trial performed in the department of anesthesia at
Khyber Teaching Hospital, Peshawar form January 2012 to September 2012. Eighty patients of ages between 10 to
18 years were randomly divided into two groups. The patients in Group A were pre-medicated with an anticholinergic
drug (atropine sulphate) while the patients in group B were not administered any pre-medications. Patients in both
the groups were anesthetized with similar drugs during strabismus surgeries. Patients were monitored using blood
pressure, electrocardiography and heart rate monitor. Dysrhythmias occurring during anesthesia were identified and
documented in each group.
Results: Dysrhythmias were observed in both the groups but the incidence was very high among patients from group
B. In group A 2 patients (5 percent) while in group B 25 patients (65 percent) developed dysrhythmias. In both the
groups only 2 patients (3 percent) developed ventricular ectopics while 25 patients (31 percent) developed
bradychardia.
Conclusion: This study shows that the incidence of oculocardiac reflex is very high in patients who were not
pre-medicated with an anticholinergic drug. Hence, all the patients requiring general anesthesia for eye surgeries
should have a proper anticholinergic pre-medication.
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