求翻译：抽取我院2009年1月至2011年12月，使用左氧氟沙星注射液预防及治疗急性阑尾炎围手术期感染的病例，按其不同的给药方法分为：一天剂量一次给予组（A法组）；一天剂量分二次给予组（B法组）。分别收集患者的一般资料及疾病资料，术前、术后第三天谷氨酸氨基转移酶（ALT）、总胆红素（TBil）、尿素氮（BUN）、肌酐（Cr），切口感染、切口愈合时间、住院时间，然后进行对比分析是什么意思？

Extraction in our hospital from January 2009 to December 2011, the use of of levofloxacin prevention and treatment of acute appendicitis Wai-operative infections, according to the different delivery methods are divided into: one day dose of a given group (a group) of France; one days dose at the sec

Extraction i homes in January 2009 to December 2011, use the left hand ofloxacin injection prevention and treatment of acute appendicitis infections for surgery, according to their different drug delivery method: a day for a given dose (A law group; a day) dose-group 2 to group meeting (B Law Group)

Extracts my courtyard from January, 2009 to December, 2011, uses the left oxygen fluorine sand star inoculation fluid prevention and the treatment acute appendicitis encircles the surgery time infection case of illness, according to its different divides into for the formula law: A day dosage one ti

Extract from January 2009 to December 2011 in our hospital, using left-ofloxacin injection in the prevention and treatment of perioperative infection: a case of acute appendicitis, according to their different medications are divided into: dose given once a day group (a group by), dose two times a d