BACKGROUND: Embolisation of atherosclerotic debris during abdominal aortic aneurysm (AAA) repair is responsible for significant peri-operative morbidity. Reports have suggested that preferential clamping of the distal vessel(s) before the proximal aorta may decrease the number of emboli passing distally and hence reduce complications. METHODS:Forty patients undergoing AAA repair were randomised to have either first clamping of the proximal aorta or the iliac vessels. Emboli passing through the Superficial Femoral Arteries were detected with a Transcranial Doppler ultrasound system. RESULTS: There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034). CONCLUSIONS: There appears to be no difference in the numbers of emboli detected when the first vascular clamp is applied to the proximal aorta or iliacs.
RCT Entities:
BACKGROUND:Embolisation of atherosclerotic debris during abdominal aortic aneurysm (AAA) repair is responsible for significant peri-operative morbidity. Reports have suggested that preferential clamping of the distal vessel(s) before the proximal aorta may decrease the number of emboli passing distally and hence reduce complications. METHODS: Forty patients undergoing AAA repair were randomised to have either first clamping of the proximal aorta or the iliac vessels. Emboli passing through the Superficial Femoral Arteries were detected with a Transcranial Doppler ultrasound system. RESULTS: There was no difference between the two groups in the number of emboli detected (p=0.49) and no significant correlation between number of emboli and dissection time (r=0.0008). However, there was a significantly higher number of emboli in the patient sub-group that were current smokers (p=0.034). CONCLUSIONS: There appears to be no difference in the numbers of emboli detected when the first vascular clamp is applied to the proximal aorta or iliacs.