INTRODUCTION: @entity698 is a common condition presenting to the @entity341 ( @entity341 ). Increasingly emergency physicians (EP) are using bedside ultrasound (BUS) as an adjunct diagnostic tool. Our objective is to investigate the test characteristics of BUS for the diagnosis of @entity698 and identify components of routine @entity341 workup and BUS associated with the presence of @entity698 . METHODS: @entity1 four years of age and older presenting to the @entity341 with suspected @entity698 were eligible for enrollment. After informed consent was obtained, BUS was performed on the subjects by trained EPs who had undergone a minimum of one-hour didactic training on the use of BUS to diagnose @entity698 . They then recorded elements of clinical history, physical examination, white blood cell count (WBC) with polymophonuclear percentage (PMN), and BUS findings on a data form. We ascertained subject outcomes by a combination of medical record review and telephone follow-up. RESULTS: A total of 125 subjects consented for the study, and 116 had adequate image data for final analysis. Prevalence of @entity698 was 40%. Mean age of the subjects was 20.2 years, and 51% were male. BUS was 100% sensitive (95% CI 87-100%) and 32% specific (95% CI 14-57%) for detection of @entity698 , with a positive predictive value of 72% (95% CI 56-84%), and a negative predictive value of 100% (95% CI 52-100%). Assuming all non-diagnostic studies were negative would yield a sensitivity of 72% and specificity of 81%. Subjects with @entity698 had a significantly higher occurrence of @entity448 , @entity390 , @entity391 , and a higher WBC and PMN count when compared to those without @entity698 . Their BUS studies were significantly more likely to result in visualization of the appendix, appendix diameter >6mm, appendix wall thickness >2mm, periappendiceal fluid, visualization of the appendix tip, and sonographic Mcburney's sign (p<0.05). In subjects with diagnostic BUS studies, WBC, PMN, visualization of appendix, appendix diameter >6mm, appendix wall thickness >2mm, periappendiceal fluid were found to be predictors of @entity698 on logistic regression. CONCLUSION: BUS is moderately useful for @entity698 diagnosis. We also identified several components in routine @entity341 workup and BUS that are associated with @entity698 generating hypothesis for future studies.

Bedside ultrasonography as an adjunct to routine evaluation of acute appendicitis in the XXXX .

@entity1 :: ('9606', 'Species') :: ['Patients'] @entity390 :: ('MESH:D009325', 'Disease') :: ['nausea'] @entity698 :: ('MESH:D001064', 'Disease') :: ['Appendicitis', 'appendicitis'] @entity341 :: ('MESH:D004630', 'Disease') :: ['emergency department', 'ED'] @entity391 :: ('MESH:D014839', 'Disease') :: ['vomiting'] @entity448 :: ('MESH:D000855', 'Disease') :: ['anorexia']
@entity341 :: (MESH:D004630,Disease) :: ['emergency department']
