Clinical Characteristics, Treatment and Prognosis of Chest Tightness Variant Asthma

Completed

• Conditions: Asthma; Lung Function; Airway Responsiveness; Clinical Anxiety; Chest Syndrome; Clinical Depression; Eosinophilia; Induced Sputum; Quality of Life; Nitric Oxide

• Registration Number: NCT03237221
• Lead Sponsor: Second Affiliated Hospital, School of Medicine, Zhejiang University

Brief Summary

Asthma, abbreviation for bronchial asthma, is one of the common chronic airways disease that threatens human health. Typical symptoms of asthma are recurrent wheezing, shortness of breath, chest tightness and cough, usually occurring at night or early morning. However, there are still some patients with only persistent clinical manifestations of chest tightness. Concerned about this group of patients, we presented a subgroup of bronchial asthma, namely, chest tightness variant asthma (CTVA). This asthma subgroup usually lacks asthma-specific clinical features such as wheezing, shortness of breath, wheezing, and therefore often misdiagnosed for a long time. In order to further understand the clinical characteristics, pathogenesis, and prognosis of patients with CTVA, we conducted a national multicenter observation study to further understand CTVA. Finally, we plan to clarify whether CTVA is a relatively independent asthma phenotype. Meanwhile, reducing misdiagnosis and perform an appropriate treatment of CTVA.

Detailed Description

Not available

Study Timeline

• Study Start: 2015-03-01
• Study First Submitted: 2017-07-24
• Study First Submitted QC: 2017-07-28
• Study First Posted: 2017-08-02
• Primary Completion: 2019-12-12
• Status Verified: 2020-10
• Study Completion: 2020-10-23
• Last Update Submitted: 2020-10-24
• Last Update Posted: 2020-10-27

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 76

Inclusion Criteria

1. all subjects agreed to participate, understand the project, observe the use of drugs, agree to follow-up, and signed informed consent;

2. the age of more than 14 and less 80 years old, gender and ethnicity are not limited;

3. the duration time was more than 6 months,and chest tightness was the only complaint, without breathing, short of breath, chronic cough;

4. no wheezing;

5. a diagnosis of asthma supported by one or more other characteristics:

   • bronchial provocation test positive;
   • improvement in forced expiratory volume at one second (FEV1) of more than 12% and 200 mL after inhaled salbutamol;
   • variability in diurnal peak expiratory flow (PEF) of more than 10% for one day during one week.

6. bronchodilator and glucocorticoid treatment is effective;

7. exclude the following diseases by the corresponding doctors: coronary heart disease, myocarditis, heart failure, GERD, neuromuscular disease, and mental disease.

Exclusion Criteria

1. can not cooperate with related inspection or for other reasons;
2. patients with chronic obstructive pulmonary disease, interstitial pneumonia, active tuberculosis, community acquired pneumonia, lung cancer, bronchiectasis, cor pulmonale, pulmonary embolism, and accompanied with serious systematic disease (such as coronary heart disease, myocarditis, heart failure, gastroesophageal reflux disease, neuromuscular disease, etc);
3. history of drug abuse, alcohol abuse or anesthesia or with a history of mental illness (schizophrenia, obsessive-compulsive disorder, depression) and against personality, motivation, suspicious, or other emotional or mental issues that may affect participation in the study;
4. taking part in other drug clinical trial project, or drop out less than 3 months;
5. during pregnancy, lactation women;
6. obvious abnormal of High Resolution CT.

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Asthma control questionnaire (ACQ)	Change from Baseline ACQ score at 36 months	Asthma control questionnaire (ACQ)

Secondary Outcome Measures

Name	Time	Method
Airway responsiveness	Change from Baseline ACQ score at 36 months	Airway responsiveness
Forced expiratory volume in one second	Change from Baseline ACQ score at 36 months	Forced expiratory volume in one second
Peak expiratory flow	Change from Baseline ACQ score at 36 months	Peak expiratory flow
Asthma quality of life questionnaire	Change from Baseline ACQ score at 36 months	Asthma quality of life questionnaire
Acute asthma episode	Change from Baseline ACQ score at 36 months	Acute asthma episode
Numbers of emergency or hospitalization	Change from Baseline ACQ score at 36 months	Numbers of emergency or hospitalization

Trial Locations

Locations (34)

Beijing Chao-Yang Hospital; 🇨🇳 Beijing, Beijing, China

Beijing Tongren Hospital, Capital Medical University; 🇨🇳 Beijing, Beijing, China

China-Japan Friendship Hospital; 🇨🇳 Beijing, Beijing, China

Xinqiao Hospital，Third Military Medical University; 🇨🇳 Chongqing, Chongqing, China

The Second Affiliated Hospital，Fujian Medical University; 🇨🇳 Fuzhou, Fujian, China

Nanfang Hospital, Nanfang Medical University; 🇨🇳 Guangzhou, Guangdong, China

The First Affiliated Hospital,Guangzhou Medical University; 🇨🇳 Guangzhou, Guangdong, China

People's Hospital of Shenzhen; 🇨🇳 Shenzhen, Guangdong, China

Affiliated Hospital,Zhanjiang Medical College; 🇨🇳 Zhanjiang, Guangdong, China

Guizhou Provincial People's Hospital; 🇨🇳 Guiyang, Guizhou, China

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