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Forced downward ocular deviation. Occurrence during oculovestibular testing in sedative drug-induced coma
Archives of Neurology
|July 1, 1978
Summary
Caloric testing in comatose patients revealed a unique eye movement pattern. Forced downward eye deviation following induced lateral movements suggests sedative-hypnotic drug overdose.
Area of Science:
- Neurology
- Toxicology
Background:
- Comatose patients require accurate diagnosis for effective treatment.
- Sedative-hypnotic drug overdose can cause altered neurological signs.
Purpose of the Study:
- To investigate the oculovestibular response in patients with sedative-hypnotic drug overdose.
- To identify specific eye movement patterns indicative of this condition.
Main Methods:
- Caloric (oculovestibular) testing using ice water was performed on 32 comatose patients.
- Observed and recorded induced lateral eye movements and subsequent ocular deviations.
Main Results:
- A variety of lateral eye movements were induced in comatose patients.
- Delayed forced downward deviation of one or both eyes followed induced lateral movements in 24 out of 32 patients (75%).
Conclusions:
- The phenomenon of delayed forced downward ocular deviation during caloric testing is a significant finding.
- This specific oculovestibular response pattern strongly suggests sedative-hypnotic drug overdose in comatose patients.
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