Objective : To study the minimum effective dose of small doses of bupivacaine combined with fentanyl in spinal anesthesia, not only to obtain a reliable anesthetic effect, but also to reduce the incidence of side effects such as hypotension and nausea. 目的研究小剂量布吡卡因联合芬太尼用于腰麻的最小有效剂量(MED),使其既有可靠的麻醉效果,又降低血压、恶心等副作用的发生率。
Bio-assay, fecal examination for ova and dissection of infected animals were used for the estimation of minimum effective dose of gamma irradiation to control infectivity of Clonorchis sinensis metacercariae. 用粪检虫卵和尸剖动物检查虫体的生物学方法,判定控制华支睾吸虫囊蚴感染性的最小有效剂量(MED)。
Minimum effective dose and regulatory mechanism of angiostatin-inhibited embryo implantation in the mouse 血管生长抑素抑制小鼠胚胎植入的最低有效量及其作用机理