Rapid ventricular pacing (RVP) is a technique to obtain flow arrest for short periods of time during dissection or rupture of the aneurysm. RVP results in an adequate fall of blood pressure which presents as an on-off phenomenon. It is not clear whether repetitive periods of pacing are harmless for the patient. Silent cardiac and cerebral infarcts may be undetected. The investigator will study the safety of RVP, particularly for the heart and the brain, retrograde by studying troponin levels and magnetic resonance imaging or computed tomography.
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Change of cardiac specific enzyme Troponin (cTnl) from preoperative sample (baseline)
Timeframe: A first blood sample is collected immediately preoperative in the operating room. Postoperative samples are taken at 24 hours up to 60 hours after start surgery