A.昏迷患者B.上消化道腫瘤引起吞咽困難的患者C.早產(chǎn)兒D.能進(jìn)食的患者
A.15minB.20minC.25minD.30min
A.胃出血B.胃潴留C.胃食管反流、誤吸D.呃逆