支气管哮喘防治全球创议(GINA)将哮喘的严重程度分为三度四级,其中三级和四级属于中度和重度哮喘。在整个哮喘人群当中,中重度哮喘大约只占1/3,但在临床上轻度哮喘患者很少就诊,中重度哮喘大约占就诊患者的2/3甚至更多。中重度哮喘患者由于症状明显,频繁就诊,因为哮喘控制不良,经常出现急性发作,需要住院治疗,虽然人数不是很多,但占用了大部分的医疗资源。无论是从提高哮喘防治的整体水平的角度,还是从减少哮喘疾病负担的角度,都应当将中重度哮喘作为哮喘长期管理的主要的目标人群。
                                 
                                    
                                  
                       
                           Citation:
                           LIU Chuntao. Therapy adjustment for moderate and severe asthma. Chinese Journal of Respiratory and Critical Care Medicine, 2007, 6(5): 329-331. doi: 
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				                                                                | 1. | National institutes of health,National heart,Lung and Blood Institute.Global strategy for asthma management and prevention.Revised,2006,http://www.ginasthma.com/ Guidelineitem.asp. | 
				                                                        
				                                                            
				                                                                | 2. | Bateman ED,Boushey HA,Bousquet J,et al.Can guideline-defined asthma control be achieved?The Gaining Optimal Asthma ControL study.Am J Respir Crit Care Med,2004,170:836-844. | 
				                                                        
				                                                            
				                                                                | 3. | van den Toorn LM,Overbeek SE,de Jongste JC,et al.Airway inflammation is present during clinical remission of atopic asthma.Am J Respir Crit Care Med,2001,164:2107-2113. | 
				                                                        
				                                                            
				                                                                | 4. | Bateman ED,Jacques L,Goldfrad C,et al.Asthma control can be maintained when fluticasone propionate/salmeterol in a single inhaler is stepped down.J Allergy Clin Immunol,2006,117:563-570. | 
				                                                        
				                                                            
				                                                                | 5. | Woolcock AJ,Jenkins CR.Assessment of bronchial responsiveness as a guide to prognosis and therapy in asthma.Med Clin North Am,1990,74:753-765. | 
				                                                        
				                                                            
				                                                                | 6. | Rabe KF,Atienza T,Magyar P,et al.Effect of budesonide in combination with formoterol for reliever therapy in asthma exacerbations:a randomised controlled,double-blind study.Lancet,2006,368:744-753. | 
				                                                        
				                                                    
				                                                 
				                                             
				                                            
                             
                            
                                
                               		 
		                                
		                                    - 1.  National institutes of health,National heart,Lung and Blood Institute.Global strategy for asthma management and prevention.Revised,2006,http://www.ginasthma.com/ Guidelineitem.asp.		                                    
		                                    
- 2.  Bateman ED,Boushey HA,Bousquet J,et al.Can guideline-defined asthma control be achieved?The Gaining Optimal Asthma ControL study.Am J Respir Crit Care Med,2004,170:836-844.		                                    
		                                    
- 3.  van den Toorn LM,Overbeek SE,de Jongste JC,et al.Airway inflammation is present during clinical remission of atopic asthma.Am J Respir Crit Care Med,2001,164:2107-2113.		                                    
		                                    
- 4.  Bateman ED,Jacques L,Goldfrad C,et al.Asthma control can be maintained when fluticasone propionate/salmeterol in a single inhaler is stepped down.J Allergy Clin Immunol,2006,117:563-570.		                                    
		                                    
- 5.  Woolcock AJ,Jenkins CR.Assessment of bronchial responsiveness as a guide to prognosis and therapy in asthma.Med Clin North Am,1990,74:753-765.		                                    
		                                    
- 6.  Rabe KF,Atienza T,Magyar P,et al.Effect of budesonide in combination with formoterol for reliever therapy in asthma exacerbations:a randomised controlled,double-blind study.Lancet,2006,368:744-753.