A.繼續(xù)滴催產(chǎn)素,待宮口開全后作會(huì)陰切開助產(chǎn) B.立即產(chǎn)鉗助產(chǎn) C.立即肌注度冷丁 D.會(huì)陰切開后頭皮鉗牽引助產(chǎn) E.立即停滴催產(chǎn)素并作剖宮產(chǎn)術(shù)