The management of acute severe asthma.
D000208:Acute Disease; D001249:Asthma / Q000188:drug therapy*; D001286:Atropine Derivatives / Q000627:therapeutic use*; D006801:Humans; D009241:Ipratropium / Q000627:therapeutic use*
D001286:Atropine Derivatives; D009241:Ipratropium