Search results for "reagents"

showing 2 items of 232 documents

Screening for colorectal cancer with immunochemical faecal occult blood tests.

2012

Population-based studies have shown that guaiac faecal occult blood testing followed by colonoscopy in case of positivity can reduce colorectal cancer mortality. However these tests have been criticised for their fairly low sensitivity. For this reason attention has been given to alternative tests. The aim of this paper is to review the evidence for screening for colorectal cancer using qualitative immunochemical faecal occult blood tests. For the complete range of tested cut-off values, immunochemical faecal occult blood tests lead to higher diagnostic yield, improved sensitivity and greater participation. The optimal number of samples and the optimal cut-off value has to suit local resour…

medicine.medical_specialtyScreening testColorectal cancerCost-Benefit AnalysisPopulationColonoscopyGastroenterologySensitivity and SpecificityChromatography AffinityJapanInternal medicinemedicineHumansMass ScreeningSampling (medicine)educationMass screeningEarly Detection of Cancereducation.field_of_studyHepatologymedicine.diagnostic_testbusiness.industryGastroenterologyFaecal occult bloodPatient Acceptance of Health Caremedicine.diseaseEuropeOccult BloodNorth AmericaIndicators and ReagentsFaecal occult blood testbusinessColorectal NeoplasmsGuaiacDigestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver
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Modulation of central corneal thickness by various riboflavin eyedrop compositions in porcine corneas

2012

Purpose To evaluate the modulatory effect of various riboflavin 0.1% and 0.2% compositions on the central corneal thickness (CCT) in fresh porcine corneas. Setting Department of Ophthalmology, Johannes Gutenberg University of Mainz, Mainz, Germany. Design Experimental study. Methods The CCT in freshly enucleated porcine globes was measured by ultrasound pachymetry before and after (if applicable) deepithelialization and every 10 minutes thereafter during 120 minutes of eyedrop application. In Groups 1 and 2 (controls), no eyedrops were applied. In Groups 3 and 4, isotonic riboflavin eyedrops were used. In Groups 5 to 9, hypotonic riboflavin eyedrops were given. In Groups 10 and 11, preparat…

medicine.medical_specialtySwineRiboflavinRiboflavinCorneaCorneal edemaCorneaOphthalmologyIsotonicAnimalsMedicineBody Weights and MeasuresUltrasonographyPhotosensitizing Agentsbusiness.industryCorneal EdemaOsmolar ConcentrationUltrasound pachymetryHydrogen-Ion ConcentrationSensory SystemsSurgeryOphthalmologyCross-Linking ReagentsOphthalmic solutionsmedicine.anatomical_structurePhotochemotherapySurgeryOphthalmic SolutionsbusinessJournal of Cataract and Refractive Surgery
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