Li Li1, Xin Sun2, Qi Wu1, Qian Wu1, Zhihang Xing1, Hongzhi Yu1. 1. Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin 300350, China. 2. Department of Respiratory Medicine, Tianjin Haihe Hospital, Tianjin 300350, China; Email: 13302031999@126.com.
Abstract
OBJECTIVE: To evaluate the lung function in patients with severe acute respiratory syndrome (SARS) 10 years after recovery and the influencing factors. METHODS: Pulmonary function tests were performed in 25 convalescent patients who had a diagnosis of SARS in 2003. Total lung volume, residual capacity, vital capacity, forced vital capacity (FVC), FEV1, FEV1/FVC and lung carbon monoxide diffusion (DLCO) were measured, and compared with the values obtained immediately after recovery in 2003. Of the 25 cases, 3 were males and 22 were females, aging 31-69 years [average (45.8 ± 12.2)]. Twenty-five healthy adults (6 males, 19 females), aged 31-62 years [average (42.3 ± 11.9) years], were recruited as controls. RESULTS: Of the 25 cases, 2 showed simple diffusion dysfunction, 2 simple restrictive ventilatory dysfunction, 11 combined diffusion and restrictive ventilatory dysfunction, and 1 combined diffusion and obstructive ventilatory dysfunction. The remaining 10 cases showed normal lung function. There were no statistical differences in the pulmonary function measurements as compared with those measured 10 years ago, including DLCO (73 ± 12)% vs (72 ± 15)% (P>0.05), FEV1/FVC (83 ± 11)% vs (85 ± 7)%, (P>0.05), FEV1 (88 ± 7)% vs (86 ± 14)% (P>0.05), FVC (87 ± 21)% vs (87 ± 17)% (P>0.05), and RV (100 ± 17)% vs (78 ± 3 0)% (P>0.05). The lung functions of the patients showed no significant difference as compared with those obtained from the healthy controls. CONCLUSIONS: The pulmonary functions of SARS patents largely returned to normal after 10 years of convalescence, and the lung function damage was characterized by diffusing and restrictive ventilatory dysfunctions.
OBJECTIVE: To evaluate the lung function in patients with severe acute respiratory syndrome (SARS) 10 years after recovery and the influencing factors. METHODS: Pulmonary function tests were performed in 25 convalescent patients who had a diagnosis of SARS in 2003. Total lung volume, residual capacity, vital capacity, forced vital capacity (FVC), FEV1, FEV1/FVC and lung carbon monoxide diffusion (DLCO) were measured, and compared with the values obtained immediately after recovery in 2003. Of the 25 cases, 3 were males and 22 were females, aging 31-69 years [average (45.8 ± 12.2)]. Twenty-five healthy adults (6 males, 19 females), aged 31-62 years [average (42.3 ± 11.9) years], were recruited as controls. RESULTS: Of the 25 cases, 2 showed simple diffusion dysfunction, 2 simple restrictive ventilatory dysfunction, 11 combined diffusion and restrictive ventilatory dysfunction, and 1 combined diffusion and obstructive ventilatory dysfunction. The remaining 10 cases showed normal lung function. There were no statistical differences in the pulmonary function measurements as compared with those measured 10 years ago, including DLCO (73 ± 12)% vs (72 ± 15)% (P>0.05), FEV1/FVC (83 ± 11)% vs (85 ± 7)%, (P>0.05), FEV1 (88 ± 7)% vs (86 ± 14)% (P>0.05), FVC (87 ± 21)% vs (87 ± 17)% (P>0.05), and RV (100 ± 17)% vs (78 ± 3 0)% (P>0.05). The lung functions of the patients showed no significant difference as compared with those obtained from the healthy controls. CONCLUSIONS: The pulmonary functions of SARS patents largely returned to normal after 10 years of convalescence, and the lung function damage was characterized by diffusing and restrictive ventilatory dysfunctions.
Authors: Christopher C Huntley; Ketan Patel; Shahnoor-E-Salam Bil Bushra; Farah Mobeen; Michael N Armitage; Anita Pye; Chloe B Knight; Alyaa Mostafa; Marie Kershaw; Aishah Z Mughal; Emily McKemey; Alice M Turner; P Sherwood Burge; Gareth I Walters Journal: ERJ Open Res Date: 2022-05-30