Relationship between nighttime symptoms and clinical features in COPD patients: A cross-sectional multicenter study in China

Jiankang Wu; Weiwei Meng; Huihui Zeng; Yiming Ma; Yan Chen

doi:10.1016/j.hrtlng.2023.07.008

Relationship between nighttime symptoms and clinical features in COPD patients: A cross-sectional multicenter study in China

Heart Lung. 2023 Nov-Dec:62:168-174. doi: 10.1016/j.hrtlng.2023.07.008. Epub 2023 Aug 2.

Authors

Jiankang Wu¹, Weiwei Meng¹, Huihui Zeng¹, Yiming Ma¹, Yan Chen²

Affiliations

¹ Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, China; Diagnosis and Treatment Center of Respiratory Disease, The Second Xiangya Hospital, Central South University, Changsha, China.
² Department of Pulmonary and Critical Care Medicine, The Second Xiangya Hospital, Central South University, 139 Middle Renmin Road, Changsha, Hunan 410011, China; Research Unit of Respiratory Disease, Central South University, Changsha, China; Diagnosis and Treatment Center of Respiratory Disease, The Second Xiangya Hospital, Central South University, Changsha, China. Electronic address: chenyan99727@csu.edu.cn.

PMID: 37541136
DOI: 10.1016/j.hrtlng.2023.07.008

Abstract

Background: Chronic obstructive pulmonary disease (COPD) is a chronic respiratory disease that causes breathing difficulties, coughing, and other symptoms. Nighttime symptoms, such as coughing, wheezing, and shortness of breath, can significantly impact the quality of life for people with COPD.

Objective: To investigate the relationship between nighttime symptoms and other clinical features in patients with COPD, and identify potential risk factors associated with nighttime symptoms.

Methods: This cross-sectional study was conducted from October 1, 2022 to November 30, 2022 in 24 hospital outpatient departments in different cities of Hunan Province, China. The COPD Nighttime Symptom Instrument (NiSCI) was used to measure the severity of night time symptoms in COPD patients. Descriptive and inferential statistics were used to express patient socio-demographics and factors influencing nighttime symptoms.

Results: The study included 2219 COPD patients. The results showed that nighttime symptom scores differed significantly based on gender, whether the patient had experienced acute exacerbation in the past year, mMRC and CAT scores, the duration of home oxygen therapy and home non-invasive ventilation (all P < 0.0001). Multiple linear regression analysis revealed that CAT score (P < 0.0001) was significantly associated with nighttime symptom scores.

Conclusion: Nighttime symptoms are prevalent in Chinese COPD patients and correlate with disease severity. The assessment and management of nighttime symptoms in COPD patients must take into account gender, CAT and mMRC scores, history of acute exacerbations, and duration of home oxygen therapy and home non-invasive ventilation to enable tailoring of treatment strategies to individual needs.

Keywords: COPD; Clinical features; Nighttime symptoms; Related factors.