肛瘘手术中影响手术效果的关键步骤在于()。 ["要广泛切除瘘管周围瘢痕组织","切除瘘管后应一期缝合","正确找出内口,据与括约肌关系选择术式","必须用探针穿入肛管造成内口再切开","麻醉选择"]
能竞争自肾小管排泄,致青霉素血浆浓度增大、半衰期延长的药品是() ["保泰松","丙磺舒","阿司匹林","吲哚美辛","格列喹酮"]
X射线检查,司见斑片状的渗出性阴影,密度不均匀,可沿肺纹理分布,可初步诊断为() ["急性支气管炎","慢性支气管炎","肺充血和肺水肿","肺泡气肿","支气管肺炎"]
X射线检查,可见肺野阴影一致加重,肺门血管纹理显著,可初步诊断为() ["急性支气管炎","慢性支气管炎","肺充血和肺水肿","肺泡气肿","支气管肺炎"]
肛瘘的类型颇多,其中常见者为()。 ["全外瘘","单口外瘘","复杂性内外瘘","单纯性内外瘘","单口内瘘"]
概略