Multifetal gestation could be associated with higher long-term maternal mortality because it increases the risk of pregnancy complications such as preeclampsia and preterm birth, which are in turn linked to postpartum cardiovascular risk.

中文翻译：

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多胎妊娠史和长期孕产妇死亡率

多胎妊娠可能与较高的长期孕产妇死亡率有关，因为它会增加先兆子痫和早产等妊娠并发症的风险，而这些并发症又与产后心血管风险有关。