Factors associated with temporal window failure in transcranial Doppler sonography.

Background: Temporal window failure (TWF) is found in 8-20% of subjects. There are still insufficient studies about the factors affecting TWF. We aimed to elucidate the underlying causes of TWF.

Additional role of urine output criterion in defining acute kidney injury.

Background: Diagnosis of acute kidney injury (AKI) has been a major concern due to its association with increased morbidity and mortality. However, the clinical implication of the urine output criterion (UOCr) in diagnosing AKI has not been fully established.

Methods: We assessed the incidence of AKI among 1625 critically ill patients and analysed the overall survival rates based on the serum creatinine criterion (CrCr) and UOCr, both of which have been defined by the AKI Network (AKIN).