蛛网膜下腔出血后感染并发症的危险因素_王宁.ppt
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1、蛛网膜下腔出血后感染并发症的危险因素 Infectious complications of aneurysmal SAH,王 宁 首都医科大学宣武医院神经外科ICU 2009-06-21,目录,动脉瘤破裂造成的临床级联反应 感染性并发症的危险因素及对预后的影响 肺炎在肺部并发症的状况? 肺部并发症的预防与控制,动脉瘤破裂造成的临床级联反应,A higher mortality and morbidity disease,The mortality rate for SAH in the 1966 Cooperative Study on Intracranial Aneurysms was
2、50% at 29 days 33% in a recent analysis of in-hospital deaths among SAH patients admitted through an emergency department,Nature history,In the prospective Cooperative Aneurysm Study, rebleeding was maximal (4%) on the first day after SAH and then constant at a rate of 1% per day to 2% per day over
3、the subsequent 4 weeks. Several prospective follow-up cohorts have demonstrated that the risk of rebleeding with conservative therapy is between 20% and 30% for the first month after hemorrhage and then stabilizes at a rate of 3% per year.,并发症是影响预后的重要因素,The factors that strongly influence outcome af
4、ter SAH,Patient factors: the severity of initial hemorrhage, age, sex, time to treatment, and medical co-morbidities such as untreated and treated hypertension, atrial fibrillation, congestive heart failure, coronary artery disease, and renal disease. Aneurysm factors: size, location in the posterio
5、r circulation, and possibly morphology. Institutional factors include the availability of endovascular services, the volume of SAH patients treated, and the type of facility in which the patient is first evaluated. Cross DT. Mortality rates after subarachnoid hemorrhage: variations according to hosp
6、ital case volume in 18 states. J Neurosurg.2003;99:810817.,Vasospasm,Angiographic vasospasm is seen in 30% to 70% of patients In contemporary series, 15% to 20% of such patients suffer stroke or die of vasospasm despite maximal therapy Looked at another way, vasospasm appears to account for nearly 5
7、0% of the deaths in patients surviving to treatment after SAH Longstreth WT. Clinical course of spontaneous subarachnoid hemorrhage: a population-based study in King County, Washington. Neurology. 1993;43:712718.,Hydrocephalus,Acute hydrocephalus (ventricular enlargement within 72 hours) is reported
8、 to occur in 20% to 30% of patients. Chronic ventriculomegaly requiring permanent shunting procedures is reported at rates of 18% to 26% of surviving patients.,Seizures,More recent retrospective reviews report a low frequency of seizures ranging from 6% to18%. Delayed seizures occurred in 7% of pati
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