Clinical application of 64-slices spiral CT angiography in diagnosing subarachnoid hemorrhage and Nursing care

Objective:To evaluate the value of 64-slices spiral CT angiography(CTA) in the etiological diagnsis of subarachnoid haemorrhage(SAH) and nursing care.Methods:CTA was performed in 89 cases with spontaneous SAH admitted from September 2005 to September 2006,49 of which also underwent digital subtracted angiography(DSA).The findings of CTA were compared with the results of DSA.Results:Among the 89 patients,CTA revealed 69 cases with cerebral aneurysm,9 arteriovenous malformation(AVM),2 thrombus of venous sinues,8 negative findings.Among the 49 patients who underwent both CTA and DSA,all but 1 lesions showed by CTA,either cerebral aneurysms(n=41) or AVMs(n=4),were confirmed by DSA.DSA failed to show one case of small anterior communicating aneurysm demonstrated by CTA.It was found that CTA sensitivity and specificity were 100% and that DSA sensitivity was 98% and specificity was 100% in diagnosis of intracranial aneurysms in etiological diagnosis of SAH.Conclusion:64-slices spiral CTA is a non-invaise,fast convenience imaging modality for etiological diagnosis of the SAH and also plays an important role in selecting therapy and assessing difficulties of treatment.