Abstract:Objective To investigate the relationship between serum 25- hydroxyvitamin D [25 (OH) D] and anxiety, depression and quality of life in patients with pulmonary hypertension (PH) associated with chronic obstructive pulmonary disease (COPD). Methods A total of 182 patients were enrolled in this study. The patients were divided into COPD group (80 cases) and COPD combined with PH group (102 cases ) according to pulmonary artery systolic pressure (PASP) ≥40 mmHg measured by echocardiography. The age, gender, smoking, body mass index (BMI), forced expiratory volume in the first second accounted for the percentage of forced vital capacity (FEV1/FVC) and so on were collected. Serum levels of 25 (OH) D was measured by ELISA. The Hamilton Anxiety Scale (HAMA), the Hamilton Depression Scale (HAMD) and the chronic obstructive pulmonary disease assessment test questionnaire (CAT) were used to evaluate the anxiety, depression and quality of life of the two groups. Results The scores of 25 (OH) D, HAMA, HAMD and CAT in COPD with PH group were higher than those in COPD group (P < 0.05). The scores of HAMA, HAMD and CAT in 25 (OH) D deficiency group were higher than those in 25 (OH) D normal group (P < 0.05). After adjusting for age, sex and BMI by multiple linear regression, 25 (OH) D had a nega tive effect on HAMD and CAT scores in COPD patients with PH (P < 0.05). Conclusions Serum vitamin D was closely related to depression and quality of life in patients with pulmonary hypertension associated with chronic obstructive pulmonary disease.