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Can one predict outcome of medical coma?
Ciba Foundation Symposium
|January 1, 1975
Summary
Early assessment of motor response and oculovestibular (OV) reflex in medical coma patients can predict outcomes. Absence of both responses at 12 hours indicates death, while absence at 24 hours suggests severe disability.
Area of Science:
- Neurology
- Critical Care Medicine
- Clinical Neuroscience
Background:
- Predicting outcomes in medical coma is crucial for patient management.
- Established prognostic indicators for medical coma are limited.
- Early assessment tools are needed to guide clinical decisions.
Purpose of the Study:
- To evaluate the predictive value of motor response and oculovestibular (OV) reflex for medical coma outcomes.
- To determine the optimal time point for these assessments.
Main Methods:
- Assessed 48 patients within 24 hours of medical coma onset.
- Recorded motor responses to noxious stimuli and OV reflex (ice-water irrigation).
- Classified patients into outcome groups (death/PVS, severe disability, moderate/good recovery) at 3 months.
Main Results:
- Combined motor and OV reflex assessments at 12-24 hours effectively predicted outcomes.
- Minimal motor score and absent OV reflex at 12 hours correlated with death.
- Absence of OV reflex at 12 or 24 hours with higher motor scores predicted severe disability.
Conclusions:
- Early bedside evaluation of motor and OV reflexes provides accurate prognostic information in medical coma.
- These assessments can help distinguish between different patient outcomes within 24 hours.
- Age, pupillary responses, and other physiological parameters were not predictive.