Abstract: 【Abstract】 Objective To investigate the morbidity of pulmonary arterial hy- pertension (PAH) in systemic lupus erythematosus (SLE) on the basis of pulmonary arterial pressure screening, and seek relational clinical index with PAH. Methods They have ordinary color Doppler echocardiography examination. According to the diagnostic criteria of PAH, divide them into PAH group and non-PAH group. Do statistical analysis between two groups, and contrast with previous literature. Results ①The morbidity of PAH in SLE is high to 25.8%.②The occurrence of PAH has positive relativity with Renault phenomenon, multiple serous effusions and interstitial lung disease(r is 0.318,.416 and 0.267 respectively, P <0.05). ③There’s statistic significance in decreasing of ALB, C3,PLT and increasing of GLO, IgG, CIC and RF in two groups(P <0.05). Conclusion SLE patients should have pulmonary arterial pressure general measure when initially diagnosed. The morbidity of PAH is obviously increased. When accompanied by Renault phenomenon, multiple serous effusions and interstitial lung disease etc, the morbidity of PAH in SLE may raise.

Key words: Systemic lupus erythematosus, Pulmonary arterial hypertension, Color Doppler echocardiography