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Respiratory alkalosis early after stroke: its relation to loco-motor function
Scandinavian Journal of Rehabilitation Medicine. Supplement
|January 1, 1983
Summary
Respiratory alkalosis in acute stroke patients correlates with motor impairment. Initial alkalosis indicates poorer motor recovery, highlighting the importance of blood gas monitoring in stroke care.
Area of Science:
- Neurology
- Respiratory Physiology
- Clinical Chemistry
Background:
- Acute stroke often presents with hemi-motor deficits.
- Blood gas analysis provides critical physiological data.
- Understanding blood gas parameters in stroke is vital for prognosis.
Purpose of the Study:
- To investigate the relationship between blood gases and clinical factors in acute stroke patients.
- To assess changes in blood gases and motor function over a three-week period.
- To determine if initial blood gas abnormalities predict motor recovery.
Main Methods:
- Blood gases (paO2, paCO2, blood pH) were measured in 27 acute stroke patients within 72 hours.
- Data correlated with consciousness, lesion site, CSF hemorrhage, motor deficit, and comorbidities.
- Sixteen patients underwent follow-up blood gas sampling and motor assessment for three weeks.
Main Results:
- Respiratory alkalosis was observed in 37% of patients, hypoxia in 7%, and no acidosis.
- Blood gas abnormalities significantly correlated only with the extent of motor impairment.
- Minimal blood gas changes occurred during the three-week follow-up.
- Initial respiratory alkalosis predicted poor motor recovery.
Conclusions:
- Blood gas disturbances in acute stroke are primarily linked to motor deficit severity.
- Respiratory alkalosis at onset is a negative prognostic indicator for motor recovery.
- Regular blood gas monitoring may aid in predicting stroke outcomes.