Postinduction Paced Pulseless Electrical Activity in a Patient With a History of Oropharyngeal Instrumentation-Induced Reflex Circulatory Collapse.

Background: Reflex hypotension and bradycardia have been reported to occur following administration of several drugs associated with administration of anesthesia and also following a variety of procedural stimuli.
Case Report: A 54-year-old postmenopausal female with a history of asystole associated with sedated upper gastrointestinal endoscopy and post-anesthetic-induction tracheal intubation received advanced cardiac resuscitation after insertion of a temporary transvenous pacemaker failed to prevent pulseless electrical activity. The patient's condition stabilized, and she underwent successful cataract extraction, intraocular lens implantation, and pars plana vitrectomy.
Conclusion: Cardiac pacemaker insertion prior to performance of a procedure historically associated with reflex circulatory collapse can be expected to protect a patient from bradycardia but not necessarily hypotension.