周しゅう産さん期きしゅうさんきじ字FuriganaAudioMeanings1nounperinatal periodmedicine›Medical term referring to the period around childbirth, typically from the 22nd week of pregnancy to the first week after birth.周しゅう産さん期き医い療りょうの進しん歩ぽにより、早そう産ざん児じの生せい存ぞん率りつが向こう上じょうした。Break this sentence down in the analyzerAdvances in perinatal care have improved the survival rate of premature infants.