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Time Test (time + test)

Distribution by Scientific Domains

Medical Sciences	80%

Selected Abstracts

Phosphatidylglycerol and daptomycin synergistically inhibit tissue factor-induced coagulation in the prothrombin time test

JOURNAL OF THROMBOSIS AND HAEMOSTASIS, Issue 6 2010
A. M. H. P. VAN DEN BESSELAAR
No abstract is available for this article. [source]

The relation between tear film tests in patients with dry eye disease

OPHTHALMIC AND PHYSIOLOGICAL OPTICS, Issue 6 2003
Kelly K. Nichols
Abstract Purpose:, The purpose of this report was to investigate the relation between dry eye diagnostic tests. Methods:, Dry eye patients were enrolled to complete a clinical examination, including the following dry eye tests: a meibomian gland evaluation, tear meniscus height, fluorescein tear breakup time, fluorescein staining of the cornea, the Schirmer 1 test, the phenol red thread test, and rose bengal staining of the conjunctiva. Statistical analyses, including correlation coefficients, the Wilcoxon sign rank test, chi-square test, and logistic regression were used to address the relation between these clinical tests of dry eye. Results:, There was a strong relation between the Schirmer test and fluorescein staining in all four statistical analyses. Similarly, there was also a strong relation between the phenol red thread test and both fluorescein and rose bengal staining. Finally, the results of the Schirmer test were associated with the tear breakup time test in three of four analyses. Conclusions:, The results indicate that tests of aqueous deficiency (volume or production) are associated with ocular surface desiccation. This important relation should be recognized when choosing dry eye tests as outcomes in clinical trials and epidemiological studies. [source]

Validation of a bedside activated clotting time test (Hemochron® Jr II Signature) with low dose heparin therapy

ANAESTHESIA, Issue 4 2009
L. Racioppi
Summary The purpose of this study was to validate a device designed to measure activated clotting time in low-range heparin plasma concentrations (ACT-LR) prospectively during the post-operative period of vascular surgery. Measurement of ACT-LR and activated partial thromboplastin time (APTT) were performed before heparinisation (T0) and at the end of surgery (T1). ACT-LR(T1) and ,ACT-LR (defined as ACT-LR(T1) , ACT-LR(T0)) were evaluated as diagnostic tests for excessive anticoagulation, defined by APTT more than twice the laboratory's normal, by Bland-Altman method and receiver operating characteristic (ROC) curves. In 103 patients, mean (SD) ACT-LR was 137 (33) s at T0 and 176 (39) s at T1. Bland-Altman graph did not show a good agreement between APTT and ACT-LR. Areas under ROC curves were 0.82 (95% CI: 0.75,0.89) and 0.87 (95% CI: 0.80,0.93) for ACT-LR(T1) and ,ACT-LR, respectively. Using a threshold of 32 s for ,ACT-LR, test sensitivity was 87% (95% CI: 81,93%), specificity was 85% (95% CI: 78,92%), positive predictive value was 90% (95% CI: 84,96%) and negative predictive value was 81% (95% CI: 73,86%). While ,ACT-LR may have some potential in evaluating excessive anticoagulation in vascular surgery, the poor correlation between ACT-LR and APTT does not support its routine use. [source]

Repellent efficacy of wood vinegar against Culex pipiens pallens and Aedes togoi (Diptera: Culicidae) under laboratory and semi-field conditions

ENTOMOLOGICAL RESEARCH, Issue 2 2010
Martha W. KIARIE-MAKARA
Abstract The repellent efficacy of wood vinegar was assessed against mosquitoes under laboratory conditions at 1, 5, 10, 20, 40, 60 and 80% concentrations. The study evaluated whether wood vinegar is able to repel Culex pipiens pallens Coquillet and Aedes togoi (Theobald) from the human body and if so at what concentrations. The tests were conducted using the arm-in-cage method in 80 × 40 × 40 cm screened mosquito cages. The data were analyzed and compared with those of N,N-Diethyl-3-methylbenzamide (deet) at 10.3% concentration. The results showed that wood vinegar provided mosquito repellence of varying degree depending on the concentration used. The observed repellence averaged from as low as 39.6% at 5.0% concentration to as high as 100% at 80% concentration against Ae. togoi. Repellence against Cx. pipiens pallens was high being 90.3% at 20% concentration, 92.2% at 40% concentration, 93.9% at 60% concentration and 100% at 80% concentration. The duration of protection time tests showed that the 40% and 60% concentrations of the wood vinegar give protection from landing of Ae. togoi for a period of up to 7 h, though the lower concentration gave lower protection after the first five hours. The results indicated that wood vinegar has mosquito repellent characteristics that tend to vary with the concentration used and the species of mosquitoes. Wood vinegar in this case was very effective in repelling Cx. pipiens pallens, even at lower concentrations while higher concentrations were required to repel Ae. togoi. [source]

Fatigue at sea in Swedish shipping,a field study,

AMERICAN JOURNAL OF INDUSTRIAL MEDICINE, Issue 7 2010
Margareta Lützhöft PhD
Abstract Background Today many merchant ships sail with only two nautical officers, working a shift schedule of 6,hr on and 6,hr off. There are concerns that such a shift schedule is related to fatigue. However, little data exist from onboard studies of seafarers. Methods Data were collected on board 13 ships. Fifteen participants worked on a 6-on, 6-off watch system and another 15 on a 4-on, 8-off watch system. Electrooculography, actigraphy, diaries, and reaction time tests were used to measure the effects of shift system on fatigue and sleep. Results and Conclusions Sleepiness was higher during the night shift in the 6-on, 6-off system. Moreover, sleepiness increased more during the watch in the 6-on, 6-off system compared to the 4-on, 8-off system. There was a trend toward shorter sleep episodes in the 6-on, 6-off system and sleep was more often split into two episodes. Am. J. Ind. Med. 53:733,740, 2010. © 2010 Wiley-Liss, Inc. [source]