Zhiqiang Zhong1, Fuan Lin2, Jing Yang3, Fengchun Zhang1, Xiaofeng Zeng1, Xin You1. 1. Department of Rheumatology, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing. 2. Department of Rheumatology, Zhangzhou Municipal Hospital, Fujian Province. 3. Department of Emergency, Peking Union Medical College Hospital, Beijing, China.
Abstract
Objective: To examine if patients with PM/DM are at higher risk of complicated pregnancies. Methods: In a retrospective cohort in a large tertiary centre in North China, the outcomes of 144 pregnancies were evaluated in 62 women with PM/DM. Generalized linear mixed effect models were fitted to assess the effect of pregnancy occurring after disease on pregnancy outcomes including preterm birth (PTB), abortion (spontaneous or induced) and normal delivery. Adjustment for confounding factors including parity, maternal age and pregnancy-disease interval were achieved with a multivariable model. Results: For women who became pregnant after disease onset, there was significantly higher risk of either PTB or spontaneous abortion (adjusted odds ratio, OR = 9.36, 95% CI: 1.10, 79.88; P = 0.041). The odds increase was more prominent if PM/DM was also active during pregnancy (adjusted OR = 435.35, 95% CI: 5.32, 35628.18; P = 0.007). Disease flare upon conception was observed in 4 of 22 post-PM/DM pregnancies (P = 0.125), and responded well to steroids and IVIG but resulted in PTB or spontaneous abortion. Conclusion: PM/DM, especially those less well controlled, might contribute to an increased risk of complicated pregnancy.
Objective: To examine if patients with PM/DM are at higher risk of complicated pregnancies. Methods: In a retrospective cohort in a large tertiary centre in North China, the outcomes of 144 pregnancies were evaluated in 62 women with PM/DM. Generalized linear mixed effect models were fitted to assess the effect of pregnancy occurring after disease on pregnancy outcomes including preterm birth (PTB), abortion (spontaneous or induced) and normal delivery. Adjustment for confounding factors including parity, maternal age and pregnancy-disease interval were achieved with a multivariable model. Results: For women who became pregnant after disease onset, there was significantly higher risk of either PTB or spontaneous abortion (adjusted odds ratio, OR = 9.36, 95% CI: 1.10, 79.88; P = 0.041). The odds increase was more prominent if PM/DM was also active during pregnancy (adjusted OR = 435.35, 95% CI: 5.32, 35628.18; P = 0.007). Disease flare upon conception was observed in 4 of 22 post-PM/DM pregnancies (P = 0.125), and responded well to steroids and IVIG but resulted in PTB or spontaneous abortion. Conclusion: PM/DM, especially those less well controlled, might contribute to an increased risk of complicated pregnancy.
Authors: Weng Ian Che; Karin Hellgren; Olof Stephansson; Ingrid E Lundberg; Marie Holmqvist Journal: Rheumatology (Oxford) Date: 2020-09-01 Impact factor: 7.580