نتایج جستجو برای: negative predictive value

تعداد نتایج: 1316490  

Background: The purpose of this study was to evaluate the value of perioperative tests for the diagnosis of infectionin revision shoulder arthroplasty.Methods: A retrospective analysis was performed on 537 shoulder arthroplasties (429 patients) that underwent revisionshoulder arthroplasty at our institution. Periprosthetic tissue cultures were positive in 169/537 surgeries.Results: White-blood ...

Journal: :medical journal of islamic republic of iran 0
abbas zoalfaghari imam khomeini hospital, department of internal medicine, division of gastroenterology, tehran university of medical sciences, imam khomeini hospital, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) najmeh aletaha department of internal medicine, division of gastroenterology, imam khomeini hospital, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) nader roushan department of internal medicine, division of gastroenterology, imam khomeini hospital, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) reza taslimi department of internal medicine, division of gastroenterology, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) hossein foroutan department of internal medicine, tehran university of medical sciences, tehran, iran.سازمان اصلی تایید شده: دانشگاه علوم پزشکی تهران (tehran university of medical sciences) bita faridnia tehran, iranسازمان های دیگر: specialist of internal medicine, tehran, iran

background: currently, non-invasive methods for screening atrophic gastritis and gastric cancer are lacking. the purpose of this study was to evaluate the value of serological parameters including serum pepsinogen i (pgi), pepsinogen ii (pgii) and pepsinogen i: ii ratio for the screening atrophic gastritis and gastric cancer.   methods : the study population consisted of 132 dyspeptic patients ...

F Dehghani, Mohammad Rezaei sadrabadi , Shokoh Taghipour Zahir,

Abstract Background Cerebral neoplasm arises from brain, spinal cord and meningeal cells. Not only malignant cerebral neoplasm also benign tumor could lead to death due to mass effect on vital structures. Access to these tumors is difficult, and MRI and CT scan could be helpful in determining anatomical location of tumors and distinction of malignant from benign. Objective For better and ea...

Journal: :archives of clinical infectious diseases 0
fahimeh ehsanipour research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran masoumeh mirghorbani research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran hossein masoumi asl research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran nahid vahid harandi research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran khadijeh khanaliha research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran; research center of pediatric infectious diseases, rasoul-e-akram hospital, iran university of medical sciences, tehran, ir iran. fax: +98-2166516049

conclusions although lap had good performance in early diagnosis of gas, a combination of clinical findings, including tonsillar exudates, petechiae with results of rapid antigen test or culture is necessary for clinician judgment. throat culture is the gold standard test for detecting group a streptococcal infection, but rapid test is a good replacement for culture. objectives the aim of this ...

اسلامیان, لاله , صفدریان, لیلی , مرصوصی, وجیهه ,

259 consecutive colposcopic examinations were done at colposcopic unit in Shariati Hospital during 1995-97. 58 cases were omitted due to lack of biopsy report. There were 167 cases of concordance and 34 cases of discordance between results of pap test colposcopic directed biopsy in these cases. We evaluated the value of pap test as a screening test versus colposcopic directed biopsy and found s...

Introduction: Spontaneous bacterial peritonitis (SBP) is a prevalent complication in the patients with cirrhosis and ascites, which leads to high intrahospital mortality. Diagnosis is made when ascetic fluid neutrophils is ≥250 cells/mm3. Manual counting of neutrophils is time-consuming, technically difficult, expensive and in many cases individual-dependent. In contrast, automated counting ...

Journal: :medical journal of islamic republic of iran 0
adebimpe wasiu olalekan department of community medicine, college of health sciences osun state university osogbo, pmb 4494, osogbo, nigeria. akanni olufemi emmanuel department of medical laboratory sciences, lautech college of health sciences, osogbo, nigeria.

background: diagnosis of anemia is challenging in resource-poor settings due to inadequate laboratory resources. this study assessed the validity of the tallquist haemoglobinometer in assessing anemia among pregnant women in osogbo, southwestern nigeria. methods: this was a cross - sectional study, in which 200 pregnant women of reproductive age were selected using multistage sapling method. a ...

Journal: :journal of research in medical sciences 0
mehdi sajjadi department of electrical and computer engineering, digital signal processing research lab, isfahan university of medical sciences, isfahan, iran mehdi karami department of radiology, isfahan university of medical sciences, isfahan, iran rassoul amirfattahi department of electrical and computer engineering, digital signal processing research lab, isfahan university of medical sciences, isfahan, iran vahid bateni department of radiology, isfahan university of medical sciences, isfahan, iran mohammad r ahamadzadeh department of electrical and computer engineering, digital signal processing research lab, isfahan university of medical sciences, isfahan, iran bahareh ebrahimi skin diseases and leishmaniasis research center, isfahan university of medical sciences, isfahan, iran

normal 0 false false false en-us x-none ar-sa microsoftinternetexplorer4 background: computed tomography (ct) scan without contrast is the modality of choice for diagnosis of stroke. however, routine brain ct scan, with linear processing has some limitations in early diagnosis of ischemic stroke. the aim of this study was to evaluate and compare the sensitivity and specificity of processed ct i...

2016
Suzanne Ekelund

• Including many patients with elevated D-dimer concentrations due to other causes than VTE may give a false increase in sensitivity and negative predictive value • The prevalence of VTE has an influence on the predictive values – higher prevalence gives lower NPV • A high ratio of proximal to distal DVT will increase both the sensitivity and the negative predictive value • A study focused on P...

Journal: :Clinics 2005
Carlos Eduardo Sanches Vaz Olavo Pires de Camargo Paulo José de Santana Antonio Carlos Valezi

PURPOSE To evaluate the diagnostic accuracy of magnetic resonance imaging of the knee in identifying traumatic intraarticular knee lesions. METHOD 300 patients with a clinical diagnosis of traumatic intraarticular knee lesions underwent prearthoscopic magnetic resonance imaging. The sensitivity, specificity, positive predictive value, negative predictive value, likelihood ratio for a positive...

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