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Results for “Reflex, Oculocardiac”

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At least 73 records · Page 4Linked to original sources
PubMed1985

The oculocardiac reflex during ophthalmoscopy in premature infants.

Of 54 consecutive infants referred for ophthalmoscopy with the pupils dilated, continuous electrocardiographic monitoring showed that 17 (31%) had bradycardia, ranging from 10% to 59% of baseline, coincident with instillation of eyedrops, insertion of an eyelid speculum, pressure on the globe, or stretching of the medial and lateral recti muscles.

Arrhythmias, Cardiac↗
PubMed2002

[Standardized oculocardiac reflex in ex-premature near full term (93 cases)].

UNLABELLED: The aim of the study was to present data investigating vagal reactivity in a population of premature infants reaching term, using the oculo-cardiac reflex. PATIENTS AND METHODS: Ninety three premature infants, free of any disease, near full term at the moment of testing, were prospectively investigated at a time close to discharge from neonatal unit. After an all-night polygraphic recording, a standardized oculo-cardiac reflex test was performed during quiet sleep. Data were classified in relation to both chronological and postconceptional ages. Simple liner regression analyses were performed on the selected variables. RESULTS: The results showed heterogeneity of the vagal response in this population: longest asystole (1049 ms +/- 540; 95th percentile = 1894 ms); maximal percentage of deviation between two successive RR intervals (88% +/- 90; 95th percentile = 200%); and duration between the beginning of decrease in heart rate and return to mean heart rate (14 s +/- 10; 95th percentile = 30 s). CONCLUSION: Our healthy premature infants at time of discharge exhibited a wider range of vagal reactivity than previously reported for the full term newborns. Considering our findings, we recommend caution before proceeding with treatment of vagal bradycardia in a similar premature infant population.

Electrocardiography↗
PubMedDate not supplied

Ketamine and the oculocardiac reflex. Dysrhythmia in pediatric strabismus surgery: the role of intravenous atropine.

Fifty children in the age-group 1.75-10 years, admitted for cure of strabismus, were anaesthetised with intramuscular ketamine. Half the patients, at random, were given intravenous atropine, while anaesthetised, 5 minutes before operative interference. ECG recording of Lead 2 showed an oculacardiac dysthythmic response to muscle pull in 19 of the 25 unatropinised patients. The atropinised patients failed to show evidence of muscle induced dysrhythmia in any of the subjects (0%) The 25 control traces in the atropinised subjects showed no dysrhythmia after 5 minutes, but the possible immediate transitory dysrhythmic effects of atropine in the presence of ketamine anaesthesia is the subject of further study.

Anesthesia, General↗
PubMed1983

Oculocardiac reflex from the empty orbit.

Two cases of profound bradycardia (one progressing to asystole) during orbital surgery where the relevant eye had been removed years earlier are reported. Cessation of stimulation was followed by recovery of heart rate. Intravenous atropine prevented further bradycardia.

Adolescent↗