Abstract:
BACKGROUND AND PURPOSE:Minor strokes and rapidly improving stroke symptoms are frequent exclusions for intravenous tissue-type plasminogen activator. We explored factors influencing tissue-type plasminogen activator treatment decision for minor strokes/rapidly improving stroke symptoms.
METHODS:A pilot survey, including 110 case scenarios, was completed by 17 clinicians from 2 academic medical centers. Respondents were asked whether they would treat each case with tissue-type plasminogen activator at 60 minutes after emergency department admission. Cases varied by (1) National Institutes of Health Stroke Scale score at treatment decision time, (2) symptom pattern over time (improvement or worsening and then improving), (3) type of neurological deficit (3 main domains: motor, visual/sensory/ataxia, and language/neglect), and (4) age/occupation (4 profiles). Logistic regression was used to predict probability of omission (pO). A binomial regression model was used to predict probability of treatment decision.
RESULTS:Predicted probability of treatment decision was affected by National Institutes of Health Stroke Scale score (P<0.001) and age/occupation profiles (P<0.001) but not by symptom patterns (P=0.334). There were significant, albeit modest, main effects on probability of treatment decision for neurological domains. Responses were most likely omitted (P=0.027) for cases improvement pattern and language/neglect domain (pO=0.74; 95% confidence interval, 0.52-0.89) and with visual/sensory/ataxia domain (pO=0.74; confidence interval, 0.37-0.93) when compared with improvement pattern and motor domain (pO=0.17; confidence interval, 0.06-0.42) and to any worsening and then improving patterns (0.37 journal_name journal_title authors doi subject pub_date pages issue eissn issn pii journal_volume pub_type
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