凡平時(shí)月經(jīng)周期規(guī)則,妊娠達(dá)到或超過(guò)42周尚未臨產(chǎn),稱過(guò)期妊娠(posttermpregnancy)。診斷要點(diǎn)1.計(jì)算預(yù)產(chǎn)期,分辨生理性預(yù)產(chǎn)期。(1)據(jù)末次月經(jīng)推算預(yù)產(chǎn)期,詳細(xì)詢問(wèn)平時(shí)月經(jīng)變異情況。(2)據(jù)基礎(chǔ)體溫推測(cè)算出排卵日,再加256～270日。(3)根據(jù)    （共 2013 字）     [閱讀本文] >>