background: carpal tunnel syndrome (ctu) is the most common neuropathy in the body and one of the most important causes of occupational disability. the aim of the present study was to compare the diagnostic power of doppler sonography and gray scale in diagnosing cts and their comparison with nerve conduction studies (ncv). methods: in this analytical study, diagnostic value of doppler and gray...

background: blind percutaneous pleural biopsy has traditionally been performed to investigate the etiology of exudative pleural effusion in which the initial thoracocentesis has been non- diagnostic. in view of the increasing use of image-guided and thoracoscopic pleural biopsies, this study examined the role of blind abrams pleural biopsy in the investigation of the exudative pleural effusion ...

Diagnostic testing is essential to distinguish non-diseased individuals from diseased individuals. More accurate tests lead to improved treatment and thus reduce medical mistakes. The sensitivity and specificity are two important measurements for the diagnostic accuracy of a diagnostic test. When the test results are continuous, it is of interest to construct a confidence interval for the sensi...

conclusions therefore, development of rapid diagnostic methods with suitable sensitivity and specificity is very important about this infectious disease. in this review, we will discuss some of the important diagnostic methods. context diarrhea is a common disease across the world. according to who, every year about two billion cases of diarrhea are reported in the world. it occurs mainly in th...

background patients presenting with a mass require tissue biopsy for histological diagnosis and treatment. fine needle aspiration (fna) is offered as an atraumatic, well tolerated, and inexpensive method for obtaining a biopsy from these lesions. objectives in this study we evaluated the accuracy of fna as an atraumatic method among patients with nonthyroidal masses for diagnosis of neoplastic ...

Pasteurella multocida (P. multocida) is an important pathogen of various domestic animals. The outer membrane proteins (OMPs) play a major role in pathogenesis and immunogenicity of P. multocida. The aim of the study was to develop indirect enzyme linked immuno sorbant assay (ELISA) based on OMPs to ascertain the antibody titers in animals post-infection or to gauge the potency of vaccine. The ...

Background: The efficacy of various screening variables in detection of diabetes mellitus (DM) is unclear. Objective: To determine the efficacy of various diagnostic tests for type 2 DM. Methods: 1021 inhabitants of Hakimieh district of Tehran aged between 30 and 75 years were studied.  Known cases of diabetes and those with factors influencing glucose tolerance test were excluded.  Age, sex, f...

OBJECTIVES/HYPOTHESIS Clinical symptoms and signs are routinely used to investigate pediatric obstructive sleep apnea (OSA). This study aimed to systematically assess the evidence for the diagnostic accuracy of individual or combined clinical symptoms and signs in predicting pediatric OSA. STUDY DESIGN A systematic review of the literature and diagnostic meta-analysis. METHODS Four medical ...

in the previous two parts of educational manuscript series in emergency, we explained some screening characteristics of diagnostic tests including accuracy, sensitivity, specificity, and positive and negative predictive values. in the 3rd  part we aimed to explain positive and negative likelihood ratio (lr) as one of the most reliable performance measures of a diagnostic test. to better underst...

Introduction The reliability of a diagnostic test is determined by its specificity and sensitivity. The sensitivity of a diagnostic test is defined as the ratio between the number of true positives and the sum of true positives and false negatives. The specificity of a test is defined as the ratio between true negative results and the sum of the number of true negative results and false positiv...