Dam Kim1, Jeongim Choi2, Soo-Kyung Cho1, Chan-Bum Choi1, Tae-Hwan Kim1, Jae-Bum Jun1, Dae-Hyun Yoo1, Sang-Cheol Bae1, Yoon-Kyoung Sung3. 1. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-792, South Korea. 2. Department of Rheumatology, Hanmaeum Hospital, Hanyang Medical Center, Chan-won, South Korea. 3. Department of Rheumatology, Hanyang University Hospital for Rheumatic Diseases, Seoul 133-792, South Korea. Electronic address: sungyk@hanyang.ac.kr.
Abstract
OBJECTIVE: To identify the clinical characteristics of diffuse alveolar hemorrhage (DAH) compared to other types of acute diffuse lung infiltration in SLE patients, and the factors associated with mortality in these patients. METHODS: We studied a retrospective cohort including SLE patients with acute diffuse lung infiltration on thoracic CT between January 2004 and August 2014. We divided them into 2 groups, a DAH and a non-DAH group, and compared the clinical characteristics and outcomes in the 2 groups. We also evaluated the risk factors for mortality in SLE patients with diffuse lung infiltration. RESULTS: Of 47 patients with diffuse lung infiltration, 24 patients (51.1%) satisfied the criteria for DAH and the remaining 23 patients (48.9%) were assigned to the non-DAH group. There were no significant differences between the demographic features of the 2 groups. However, decreased hemoglobin (OR = 3.46; 95% CI: 1.38-8.67; p < 0.01) and C4 (OR = 1.21; 95% CI: 1.03-1.42; p = 0.02) levels, and presence of hypoxia (OR = 23.09; 95% CI: 1.47-365.34; p = 0.03) at the time of diagnosis were associated with SLE-DAH. In addition, severe conditions requiring mechanical ventilation (OR = 64.61; 95% CI: 1.98-2112.02; p = 0.02) were associated with increased mortality, whereas DAH did not increase mortality compared with non-DAH in SLE patients with diffuse lung infiltration. CONCLUSIONS: In SLE patients with acute diffuse lung infiltration, it is important to promptly evaluate the DAH when patients have low levels of hemoglobin or C4, and symptoms of hypoxia. Mortality is associated with severe conditions requiring mechanical ventilation rather than with DAH in patients with diffuse lung infiltration.
OBJECTIVE: To identify the clinical characteristics of diffuse alveolar hemorrhage (DAH) compared to other types of acute diffuse lung infiltration in SLEpatients, and the factors associated with mortality in these patients. METHODS: We studied a retrospective cohort including SLEpatients with acute diffuse lung infiltration on thoracic CT between January 2004 and August 2014. We divided them into 2 groups, a DAH and a non-DAH group, and compared the clinical characteristics and outcomes in the 2 groups. We also evaluated the risk factors for mortality in SLEpatients with diffuse lung infiltration. RESULTS: Of 47 patients with diffuse lung infiltration, 24 patients (51.1%) satisfied the criteria for DAH and the remaining 23 patients (48.9%) were assigned to the non-DAH group. There were no significant differences between the demographic features of the 2 groups. However, decreased hemoglobin (OR = 3.46; 95% CI: 1.38-8.67; p < 0.01) and C4 (OR = 1.21; 95% CI: 1.03-1.42; p = 0.02) levels, and presence of hypoxia (OR = 23.09; 95% CI: 1.47-365.34; p = 0.03) at the time of diagnosis were associated with SLE-DAH. In addition, severe conditions requiring mechanical ventilation (OR = 64.61; 95% CI: 1.98-2112.02; p = 0.02) were associated with increased mortality, whereas DAH did not increase mortality compared with non-DAH in SLEpatients with diffuse lung infiltration. CONCLUSIONS: In SLEpatients with acute diffuse lung infiltration, it is important to promptly evaluate the DAH when patients have low levels of hemoglobin or C4, and symptoms of hypoxia. Mortality is associated with severe conditions requiring mechanical ventilation rather than with DAH in patients with diffuse lung infiltration.
Authors: David Aguirre-Valencia; Juan Naranjo-Escobar; Iván Posso-Osorio; María Carmenza Macía-Mejía; Ivana Nieto-Aristizábal; Tatiana Barrera; María Alejandra Obando; Gabriel J Tobón Journal: Autoimmune Dis Date: 2019-03-11