某產(chǎn)婦26歲,G1P0,目前孕41周,宮口開大4~5cm時(shí),胎心聽診110次/分,胎兒電子監(jiān)測示"晚期減速",胎兒頭皮血pH值7.20,最恰當(dāng)?shù)奶幚硎牵ǎ?/p>