小儿慢性气管炎综合征的病因和诊断探讨天津儿童医院呼吸内科（３０００７４）范永琛张嘉红慢性气管炎是成人最常见的慢性呼吸道疾病，其病因和诊断标准早已明确［１］。而小儿慢性气管炎的病因、诊断以及与哮喘病的关系则有待进一步探讨。我院呼吸专业组自１９８０年１月... Pediatric chronic bronchitis syndrome etiology and diagnosis of Tianjin Children’s Hospital Respiratory Medicine (300074) Fan Yongchen Zhang Jiahong Chronic bronchitis is the most common chronic respiratory disease in adults, the etiology and diagnostic criteria have long been clear [1]. The pediatric chronic bronchitis etiology, diagnosis and the relationship with asthma remains to be further explored. Our hospital respiratory professional group since January 1980 ...