27岁初产妇，宫口开全近2小时，诊断为 持续性枕后位，S+3，胎心148次/分。本 例最适宜的分娩方式应是(       )

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SQL Error: select id,body,options from ***_enewstiku where sourceid='26870' and id < 2234031 and id<>'2234031' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='26870' and id > 2234031 and id<>'2234031' order by id asc limit 5