@entity64 is a life-threatening condition. Fatal outcome is related to risk factors, some of these affected by climatic changes. Forecasting potentially harmful atmospheric processes may therefore be of practical importance in the acute care of @entity64 @entity1 . We analyzed the history of all @entity1 with acute @entity385 (N  =  184) confirmed by neuroimaging including those who died (N  =  35, 15 males) at our hospital department in the winter months of 2009. @entity1 data were anonymized, and the @entity1 meteorologists were only aware of @entity1 ' age, gender, and exact time of @entity204 . Of the meteorological parameters, equivalent potential temperature (EPT) has been chosen for analysis. EPT is generally used for forecasting thunderstorms, but in the case of synoptic scale airflow (10(6)  m), it is suitable for characterizing the air mass inflowing from different regions. The behavior of measured EPT values was compared to the climatic (30  years) averages. We developed meteorological criteria for anomalous periods of EPT and tested if such periods are associated with higher rate of fatal outcome. The duration of anomalous and @entity3257 periods was nearly equal during the studied 3  months. @entity64 onset distributed similarly between anomalous and @entity3257 days; however, of the 35 @entity204 , 27 occurred during anomalous periods: on average, 0.56 @entity204 occurred on anomalous days and 0.19 on @entity3257 days. Winter periods meeting the criteria of anomalous EPT may have a significant adverse @entity1 -meteorological impact on the outcome in acute @entity385 .

Anomalous equivalent potential temperature: an atmospheric feature predicting days with higher risk for fatal outcome in acute XXXX -a preliminary study.

@entity1 :: ('9606', 'Species') :: ['human', 'patients', 'Patient'] @entity64 :: ('MESH:D020521', 'Disease') :: ['Acute stroke', 'stroke', 'Stroke'] @entity204 :: ('MESH:D003643', 'Disease') :: ['death', 'deaths'] @entity3257 :: ('MESH:C580335', 'Disease') :: ['non-anomalous'] @entity385 :: ('MESH:D002544', 'Disease') :: ['ischemic stroke']
@entity385 :: (MESH:D002544,Disease) :: ['ischemic stroke']
