Airway Response to Mixed Gas of Sulfur Dioxide and Nitrogen Dioxide in Guinea Pigs

Objective To explore the airway response to mixed gas of sulfur dioxide(SO2) and nitrogen dioxide (NO2) in guinea pigs Methods 40 guinea pigs were divided into 4 groups averagely as following,A group inhaled mixed gas of 14.3 mg/m3 SO2,3 1 mg/m3 NO2 and air,B group inhaled mixed gas of 28.6 mg/m3 SO2,6 1 mg/m3 NO2 and air,C group inhaled 42.9 mg/m3 SO2,10.3 mg/m3 NO2 and air,control group inhaled air The intratracheal pressures (IP) of airway of...