[Intraoperative hemodynamics in elderly patients during abdominal aortic aneurysm operations]

An association between hemodynamics and age was assessed in abdominal aortic aneurysm resection and graft replacement. Changes in blood pressures and heart rates before and after clamping the aorta as well as before and after its declamping were compared in 34 cases of elective abdominal aortic resection from 1998 to 1999. The results were analyzed retrospectively reviewing their charts. The patients were divided into two groups: age under 70 and 70 or above. In the first group, the decrease in heart rate following clamping of the aorta was greater than that in the second group. On the contrary, after the aorta was declamped, a greater increase in the heart rate after declamping the aorta correlated with aging (R = 0.34, P < 0.05). However, the changes in blood pressure and heart rate were independent of preoperative coronary diseases. Whereas the people aged 70 or above showed different hemodynamics from those under 70, intraoperative hemodynamics did not reflect preoperative coronary diseases.