Diagnostic accuracy of ultrasound in detection of visceral injury in blunt abdominal trauma

Background: blunt abdominal trauma (bat) is regularly encountered in the emergency department. the present study is designed to determine the frequency of splenic injury after blunt abdominal trauma and common types of trauma leading to it. splenic injury carries immense medicolegal importance. aim: to determine the diagnostic accuracy of ultrasound in detection of visceral injury in blunt abdominal trauma considering ct as gold standard. methods: this study was conducted at department of diagnostic radiology,pakistan institute of medical sciences (pims),islamabad. study design was crosssectional (validation) study and the duration of the study was 6 months. the sample size was calculated by using who sample size calculator taking sensitivity 93.3% 2,6,specificity 85% 2,6,prevalence 65% 3,desired precision 10% and confidence interval of 95% it came out to be 141. more over purposive nonprobability sampling technique was used for sample collection. results: in this study mean age was 30 years with sd±2.13. sixty seven percent patients were male while 33% patients were female. diagnostic accuracy of ultrasound of visceral injury in blunt abdominal trauma was analyzed sensitivity of ultrasound was 93.5%,specificity was 84.8%,positive predictive value was 82.8%,negative predictive value was 94.3% while diagnostic efficacy was 88.65%. conclusion: ultrasonography has high diagnostic performance in the screening of patients with blunt abdominal trauma.