ISSN:
0942-0940
Keywords:
Balloon Matas test
;
dynamic computerized tomography
;
internal carotid artery occlusion
;
giant aneurysm
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Temporary occlusion of the internal carotid artery with a balloon atheter (balloon Matas test) and simultaneous dynamic computerized tomography scanning (DCT) were performed to determine the tolerance of permanent carotid occlusion in eight cerebral aneurysm and two carotid-cavernous fistula (CCF) cases, in whom internal carotid occlusion might be necessary during operation or as a choice of treatment. All patients were evaluated by mean transit time (MTT), especially % transit time (MTT of the occluded side×100/MTT of the control side). In six patients, % transit time (%TT) was less than 155 and no neurological signs appeared after permanent internal carotid occlusion. Neurological deficit appeared when mean arterial blood pressure was 80, and disappeared when mean arterial blood pressure was 100 during the balloon Matas test in a case whose %TT was 200. Neurological deficit appeared several seconds after the balloon Matas test in a case whose %TT was 250. The critical %TT value to cause symptomatic ischaemia was 200 from our results. Therefore, it is necessary to undertake treatment such as bypass surgery for the patients whose %TT is near 200, even if the balloon Matas test was negative.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01407518
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