1987
An evaluation of respiratory effects following exposure to 2.0 ppm formaldehyde in asthmatics: lung function, symptoms, and airway reactivity.
Witek T, Schachter E, Tosun T, Beck G, Leaderer B. An evaluation of respiratory effects following exposure to 2.0 ppm formaldehyde in asthmatics: lung function, symptoms, and airway reactivity. Archives Of Environmental & Occupational Health 1987, 42: 230-7. PMID: 3310924.Peer-Reviewed Original ResearchConceptsMethacholine inhalation challenge testFlow-volume parametersInhalation challenge testSignificant airway obstructionAirway reactivityAirway obstructionAirway responsesAsthmatic volunteersLung functionSore throatAirway resistanceMethacholine concentrationModerate exerciseRespiratory effectsFormaldehyde exposurePpm exposureChallenge testSeparate daysEye irritationMedian decrementAsthmaticsSymptomsExposurePpm formaldehydeDegrees C
1984
Airway Effects of Low Concentrations of Sulfur Dioxide: Dose-Response Characteristics
Schachter E, Witek T, Beck G, Hosein H, Colice G, Leaderer B, Cain W. Airway Effects of Low Concentrations of Sulfur Dioxide: Dose-Response Characteristics. Archives Of Environmental & Occupational Health 1984, 39: 34-42. PMID: 6370145, DOI: 10.1080/00039896.1984.10545831.Peer-Reviewed Original ResearchConceptsAsthmatic subjectsVital capacityPartial flow-volume curvesAcute respiratory effectsTotal lung capacityMaximal expiratory flowAbsence of exerciseKpm/minEnd of exerciseFlow-volume curvesDose-response relationshipDose-response characteristicsAirway effectsExpiratory volumeAirway resistanceLung capacitySignificant changesExpiratory flowRespiratory effectsHealthy subjectsHealthy individualsSeparate daysMin subjectsVolume curvesVmax50