Relationship of blood transfusion and CPB with delirium

Delirium as a syndrome which is recognized by consciousness disorder and changing in cognition. Delirium patients after by-pass are a common neurological complication, which is a component of the cognitive disorder. A high percentage of these kinds of patients suffer from after surgery. Evaluation of risk factors (blood transfusions and the use of more than one unit CPB) after surgery can be a valuable step in order to highlight the importance of prevention and early detection of delirium. This study aimed to recognize some risk factors related to delirium in patient who had a by- pass operation. This study is a cross - sectional. The number of participants was 370 patients who had a by-pass operation were studied by the continuous sampling method. Researcher referred to the selected clinical centers in Tehran to identify related patients to our study and then informed consents were obtained from all patients. Using the Delirium Screening Scale, we analyzed psychological condition of patients until they were discharged from the critical care unit daily. The personal information questioner was completed on the first day of analyzing the psychological condition. Then the gathered data was analyzed by the SPSS 16 statistical package. Our findings showed that there was no meaningful statistical relationship between the incidences of delirium with risk factors despite its being common among participants. According to these factors it is not possible to predict incidence of delirium in patients after a by- pass operation. In other words, there is an equal chance of delirium incidences among all patients’ regardless of having or not having these factors; therefore the analyzed factors of this study cannot be used to predict the delirium incidence.