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手术病人可罹患各种血液疾患,有些表现明显,在术前已被发现,但更多的是相当隐蔽。这些血液学异常多数无症状,如果未能发现并给予治疗,会在术中出现危险。下面讨论几种血液学异常的评价和治疗。贫血正常时组织仅摄取25～30%的氧,因而单纯贫血有时不会降低组织中氧的供给。多数认为在手术的应激状态下,血红蛋白最低限度应为9～10g%。也有认为血容量正常时,血红蛋白为5～10g%不会增加手术危险性,但如血容量不足,危险性会随之增大。输血具有一定危险性,因而应根据患者的血容量、病因、贫血的
Surgery patients can have a variety of blood disorders, some obvious manifestations, have been found preoperatively, but more is quite hidden. Most of these hematological abnormalities are asymptomatic, if not found and given treatment, there will be dangerous in operation. The following discusses the evaluation and treatment of several hematological abnormalities. When anemia is normal, the tissue consumes only 25-30% of the oxygen, so simple anemia sometimes does not reduce the supply of oxygen in the tissue. Most believe that the surgical state of stress, hemoglobin minimum should be 9 ~ 10g%. There are also that normal blood volume, hemoglobin 5 ~ 10g% will not increase the risk of surgery, but if insufficient blood volume, the risk will increase. Transfusion with a certain risk, and therefore should be based on the patient’s blood volume, etiology, anemia