RespirationRespiration DisordersRespiratory Tract DiseasesAir Pollutants, OccupationalDustRespiratory Function TestsVagotomyAir PollutantsTidal VolumeRespiratory MechanicsWoodOccupational ExposureIntercostal MusclesAir Pollution, IndoorHeatingCarbon DioxideNalbuphineRespiratory Physiological PhenomenaMeat-Packing IndustryRespiratory CenterOccupational DiseasesInhalation ExposureOzoneMethohexitalNitrogen DioxidePolyvinyl ChlorideCarotid SinusPeak Expiratory Flow RateApneaMorphineTextile IndustryPlethysmography, Whole BodyMaximum Allowable ConcentrationRespiratory Dead SpaceAnesthesiaEnvironmental ExposureForced Expiratory VolumeHypnotics and SedativesAnesthesia, IntravenousFiresPhrenic NerveConscious SedationAir PollutionFood HandlingChemoreceptor CellsSpirometryAnalgesics, OpioidSulfur DioxideParticulate MatterRespiratory InsufficiencyRespiratory HypersensitivityCardiovascular SystemLungRespiratory SystemFentanylPartial PressureOxygenRespiratory SoundsLung Diseases, ObstructiveNaloxoneVital CapacityHypercapniaAsthmaCatsHeart RateEnvironmental MonitoringHemodynamicsPain, PostoperativeBlood PressureDouble-Blind MethodDose-Response Relationship, DrugTime FactorsSmokingCross-Sectional Studies