Albinism and amelanotic melanoma: occurrence in a child with positive test results for tyrosinase

1982 ◽  
Vol 118 (4) ◽  
pp. 283-284 ◽  
Author(s):  
C. Wood
Keyword(s):  
Amelanotic Melanoma ◽  
Positive Test ◽  
Test Results

scholarly journals Effectiveness of Ultraviolet-C Room Disinfection on Preventing Healthcare-Associated Clostridioides difficile Infection

2020 ◽  
Vol 41 (S1) ◽  
pp. s33-s33
Author(s):  
Michihiko Goto ◽  
Erin Balkenende ◽  
Gosia Clore ◽  
Rajeshwari Nair ◽  
Loretta Simbartl ◽  
...  
Keyword(s):  
Acute Care ◽  
Acute Care Hospitals ◽  
Incidence Rates ◽  
Positive Test ◽  
Negative Binomial Regression Model ◽  
Test Results ◽  
Clostridioides Difficile ◽  
Ultraviolet C ◽  
Healthcare Associated ◽  
Uv C

Background: Enhanced terminal room cleaning with ultraviolet C (UVC) disinfection has become more commonly used as a strategy to reduce the transmission of important nosocomial pathogens, including Clostridioides difficile, but the real-world effectiveness remains unclear. Objectives: We aimed to assess the association of UVC disinfection during terminal cleaning with the incidence of healthcare-associated C. difficile infection and positive test results for C. difficile within the nationwide Veterans Health Administration (VHA) System. Methods: Using a nationwide survey of VHA system acute-care hospitals, information on UV-C system utilization and date of implementation was obtained. Hospital-level incidence rates of clinically confirmed hospital-onset C. difficile infection (HO-CDI) and positive test results with recent healthcare exposures (both hospital-onset [HO-LabID] and community-onset healthcare-associated [CO-HA-LabID]) at acute-care units between January 2010 and December 2018 were obtained through routine surveillance with bed days of care (BDOC) as the denominator. We analyzed the association of UVC disinfection with incidence rates of HO-CDI, HO-Lab-ID, and CO-HA-LabID using a nonrandomized, stepped-wedge design, using negative binomial regression model with hospital-specific random intercept, the presence or absence of UVC disinfection use for each month, with baseline trend and seasonality as explanatory variables. Results: Among 143 VHA acute-care hospitals, 129 hospitals (90.2%) responded to the survey and were included in the analysis. UVC use was reported from 42 hospitals with various implementation start dates (range, June 2010 through June 2017). We identified 23,021 positive C. difficile test results (HO-Lab ID: 5,014) with 16,213 HO-CDI and 24,083,252 BDOC from the 129 hospitals during the study period. There were declining baseline trends nationwide (mean, −0.6% per month) for HO-CDI. The use of UV-C had no statistically significant association with incidence rates of HO-CDI (incidence rate ratio [IRR], 1.032; 95% CI, 0.963–1.106; P = .65) or incidence rates of healthcare-associated positive C. difficile test results (HO-Lab). Conclusions: In this large quasi-experimental analysis within the VHA System, the enhanced terminal room cleaning with UVC disinfection was not associated with the change in incidence rates of clinically confirmed hospital-onset CDI or positive test results with recent healthcare exposure. Further research is needed to understand reasons for lack of effectiveness, such as understanding barriers to utilization.Funding: NoneDisclosures: None

scholarly journals A diagnostic test for heparin-induced thrombocytopenia

Blood ◽  
1986 ◽  
Vol 67 (1) ◽  
pp. 27-30 ◽  
Author(s):  
D Sheridan ◽  
C Carter ◽  
JG Kelton
Keyword(s):  
High Specificity ◽  
Heparin Therapy ◽  
Positive Test ◽  
Test Results ◽  
Specific Test ◽  
Heparin Induced Thrombocytopenia ◽  
Platelet Release ◽  
High Concentrations ◽  
Low Sensitivity ◽  
Test Result

Heparin-induced thrombocytopenia can be a serious and difficult-to- diagnose complication of heparin therapy. Serum from patients with heparin-induced thrombocytopenia can cause heparin-dependent platelet aggregation, but the low sensitivity and specificity of this test limit its clinical usefulness. In this report we describe an assay for heparin-induced thrombocytopenia that is both sensitive and specific. The improvement in the assay was accomplished by measuring platelet release instead of aggregation and by measuring platelet release at two heparin concentrations. The rationale for the use of two heparin concentrations was that sera from patients with heparin-induced thrombocytopenia caused release at therapeutic but not at high concentrations of heparin. Twenty-eight sera samples from patients suspected of having heparin-induced thrombocytopenia and 573 controls were coded and tested in the assay. The patients with possible heparin- induced thrombocytopenia were ranked according to the likelihood of having this disorder by using prospectively defined criteria. The test had a high specificity (99%); only one of 573 controls showed a positive result. The test was also very sensitive, and the likelihood of a positive test result was directly correlated with the clinical likelihood of the patient having heparin-induced thrombocytopenia. Six of six patients with definitive heparin-induced thrombocytopenia had positive test results, whereas zero of four patients in whom the diagnosis was unlikely had positive test results. The two-point test for heparin-induced thrombocytopenia represents a sensitive and specific test for this disorder. This test may be useful not only in confirming the diagnosis of this disorder but also may provide information about its pathogenesis.

scholarly journals Covid-19 Positive Antenatal Patients in Obstetrics and Gynea Unit, Peshawar

2021 ◽  
Vol 8 (2) ◽  
pp. 14-18
Author(s):  
Rabeea Sadaf ◽  
Muhammed Zahid ◽  
Nasreen Kishwar ◽  
Umaiyma Farhad ◽  
Behzad Khan Khalil
Keyword(s):  
Well Being ◽  
Cross Sectional Study ◽  
Positive Test ◽  
Test Results ◽  
Cross Sectional ◽  
Cesarean Birth ◽  
Asymptomatic Patients ◽  
Primary Responsibility ◽  
Polymerase Chain ◽  
Antenatal Visits

OBJECTIVES: The study aimed to determine the frequency of COVID-19 positive antenatal patients admitted in Obstetrics & Gynecology unit Hayatabad Medical Complex Peshawar with the concerns that pregnant women may be more susceptible to COVID-19 as they may be more vulnerable to respiratory infection. METHODOLOGY: This was a descriptive cross-sectional study conducted at Obstetrics & Gynecology units Hayatabad Medical Complex Peshawar from May 12th, 2020, to November 29th, 2020, screening and testing of patients admitted for childbirth was in HMC. Screening consisted of questions related to travel, contacts, and symptoms of COVID-19. All patients without a prior diagnosis of COVID-19 underwent SARS-CoV-2 polymerase chain reaction (PCR) testing of nasopharyngeal swabs, with rapid testing available. Patients scheduled for cesarean birth were screened and tested at preoperative visits RESULTS:  One hundred eighty-two patients presenting for antenatal visits were screened; 6.5% (12 out of 182) were previously diagnosed with COVID-19. The remaining 170 patients were tested at admission, and 17.6% (30 out of 170) tested positive for SARS-CoV-2. Twenty-two of the 30 who tested positive for SARS-CoV-2 (73.3%) were asymptomatic. The overall prevalence of positive test results among asymptomatic patients was 14.1% (22 out of 156). The prevalence of positive test results among asymptomatic patients increased from 1.29% (2 out of 155). CONCLUSION: The evidence on this novel infection is changing almost daily, although it will likely be many months before, we can determine the true impact it will have on both maternal and fetal well‐being. In the interim, our primary responsibility is to ensure all women have access to safe maternity services. KEYWORDS: Asymptomatic, COVID-19 Positive, Antenatal Patients, Obstetrics & Gynecology, Infection

Evaluation of anxiety levels and factors associated with positive test results in patients with drug hypersensitivity

2015 ◽  
Vol 36 (6) ◽  
pp. 439-446 ◽  
Author(s):  
Sule Comert ◽  
Tuba Erdogan ◽  
Ahmet Ugur Demir ◽  
Gul Karakaya ◽  
Ali Fuat Kalyoncu
Keyword(s):  
Drug Hypersensitivity ◽  
Positive Test ◽  
Test Results ◽  
Factors Associated ◽  
Anxiety Levels

Creatine kinase radioimmunoassay and isoenzyme electrophoresis compared in the diagnosis of acute myocardial infarction.

1980 ◽  
Vol 26 (7) ◽  
pp. 861-866 ◽  
Author(s):  
H A Homburger ◽  
G L Jacob
Keyword(s):  
Myocardial Infarction ◽  
Acute Myocardial Infarction ◽  
Creatine Kinase ◽  
Chest Pain ◽  
Predictive Value ◽  
Positive Test ◽  
Test Results ◽  
Diagnostic Specificity ◽  
B Subunit ◽  
Creatine Kinase B

Abstract We compared, in 116 patients, the relative usefulness of results of tests for creatine kinase B isoenzymes, as measured by radioimmunoassay, and the MB isoenzyme, as measured by electrophoresis, in diagnosis of acute myocardial infarction. The radioimmunoassay was specific for isoenzymes of creatine kinase containing the B subunit. All patients with acute transmural infarcts had positive test results by both techniques, but concentrations of B-isoenzymes were more frequently above normal than were MB bands in the case of patients with acute subendocardial infarcts and in the case of all patients with acute myocardial infarcts from whom sera were collected more than 24 h after onset of chest pain. Concentrations of B-isoenzymes also were increased, even when MB bands were not electrophoretically detectable, in specimens from several patients without documented actue myocardial infarcts. These abnormal results presumably were caused by increased concentrations of the BB isoenzyme in serum. Accordingly, an increased concentration of B-isoenzymes had less diagnostic specificity and predictive value for acute myocardial infarction than did a detectable MB band. Results of isoenzyme electrophoresis were more reliable for establishing this diagnosis, but the results of radioimmunoassay were more reliable for excluding it in patients with chest pain as the primary symptom.

Correlates of perceived difficulty in potentially disclosing HIV-positive test results: a study of low-income women attending an urban clinic

Sexual Health ◽  
2005 ◽  
Vol 2 (2) ◽  
pp. 103 ◽  
Author(s):  
Richard Crosby ◽  
Elizabeth A. Bonney ◽  
Lydia Odenat
Keyword(s):  
Hiv Testing ◽  
African American Women ◽  
Low Income ◽  
Contextual Factors ◽  
Urgent Care ◽  
Positive Test ◽  
Hiv Positive ◽  
Test Results ◽  
Intrapersonal Factors ◽  
Hiv Test

Background: The study identified correlates of women’s perception that testing positive for HIV would be very difficult to communicate to friends, family members and sex partners. We also determined whether perceived disclosure difficulty was associated with HIV-testing intent. Methods: Face-to-face interviews were conducted with 143 women attending an urgent care centre in Atlanta, Georgia. The centre served primarily low-income or indigent African–American women. A three-item scale (α = 0.81) assessed disclosure difficulty. Assessed correlates included selected social/contextual factors and intrapersonal factors. Results: In controlled multivariate analyses, only the social/contextual factors were associated with HIV disclosure difficulty. Women perceiving an inability to cope with positive results were more likely to report high disclosure difficulty (P = 0.01). Women perceiving an inadequate support system and those believing that HIV would substantially complicate their lives were more likely to anticipate high disclosure difficulty (P = 0.006 and P = 0.03, respectively). Disclosure difficulty was not associated with intent for HIV-testing ‘today’ (P = 0.50) or within the next 12 months (P = 0.27). Conclusion: Findings provide initial evidence suggesting that selected social/contextual factors rather than intrapersonal factors are associated with anticipated disclosure difficulty of HIV-positive test results among low-income minority women, residing in the urban south. High levels of anticipated disclosure difficulty may not preclude HIV test acceptance.

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