Value of Renal Resistive Arterial Index for Differential Diagnosis of Patient With Anticipated Acute Kidney Injury Administered to Emergency Department

acute kidney injury is a common clinical syndrome introducing to emergency services with varying symptoms. acute kidney injury is divided into 3 subgroups: prerenal, renal and postrenal. there is not any certain laboratory or imaging modality for early detection of injury's type. calculation of renal resistive index with doppler ultrasound at emergency setting can be helpful for early detection of etiology of acute kidney injury subgroup.patient will be selected according to clinical status and detailed history and laboratory parameters.renal resistive index will we calculated with doppler ultrasound of arcuate and interlober arteries of kidneys. resistive index values of acute kidney injury patients will be compared depending on further tests and resistive indexes of suggestive etiologies will be compared according to final diagnosis.