The investigators aim to test the thrombotic potential of various heart chambers including left atrium, left atrial appendage, right atrium and peripheral veins. Blood samples will be taken from the different chambers in 50 patients admitted for standard pulmonary vein ablation and compared to patients without atrial fibrillation admitted for left sided supra ventricular tachycardia or mitral clip. Thrombin generation parameters will be assessed by the calibrated automated thrombogram.
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ETP of various heart chambers measured by the calibrated automated thrombogram (CAT)
Timeframe: 1 Day
Peak height of various heart chambers measured by the calibrated automated thrombogram (CAT)
Timeframe: 1 Day
Lag time of various heart chambers measured by the calibrated automated thrombogram (CAT)
Timeframe: 1 Day
Time to peak of various heart chambers measured by the calibrated automated thrombogram (CAT)
Timeframe: 1 Day