title: A simple cardiac monitor for ophthalmic surgery.
mesh_terms: D000367:Age Factors; D001145:Arrhythmias, Cardiac / Q000175:diagnosis*; D002302:Cardiac Output; D006321:Heart / Q000502:physiology; D006323:Heart Arrest / Q000175:diagnosis*; D006326:Heart Auscultation / Q000295:instrumentation*; D006339:Heart Rate; D006801:Humans; D008722:Methods; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D009799:Ocular Physiological Phenomena; D013508:Ophthalmologic Surgical Procedures; D012018:Reflex