临床上,有些危重病人,在感染的同时常常伴有代谢性酸中毒,因此医师常用抗感染药物环丙沙星和纠正酸中毒的药物碳酸氢钠进行治疗。在输液过程中,我们发现,如果输完环丙沙星或碳酸氢钠后接着更换碳酸氢钠或环丙沙星时,输液管中产生乳白色沉淀物质并阻塞输液管道及针头。讨论 1.输注使用的环丙沙星为乳酸盐,其 pH 值为4.5左右,而碳酸氢钠注射液的 pH 值为7～8,前者为酸性,后者为 Clinically, some critically ill patients, often accompanied by metabolic acidosis while infected, so physicians often use anti-infectives ciprofloxacin and acidosis drug sodium bicarbonate treatment. During infusion, we found that if ciprofloxacin or sodium bicarbonate was delivered and then sodium bicarbonate or ciprofloxacin was replaced, opalescent precipitates were produced in the tubing and blocked the tubing and needles. Discussion 1. Ciprofloxacin infusion is lactate, the pH value of about 4.5, while the sodium bicarbonate injection pH value of 7 to 8, the former is acidic, which is