Abstract
Levels of cardiac necroenzymes, high-sensitive troponin (hsTnT) and creatine kinase muscle-brain (CKMB) increase as a result of a myocardial damage following catheter ablation. To analyze the mid-term alteration of hsTnT and CKMB levels following radiofrequency ablation (RFCA) for atrial fibrillation (AF), atrial flutter (AFlu), AV-nodal reentry tachycardia (AVNRT) and electrophysiological studies (EPS) without ablation. Patients undergoing RFCA for various indications and EPS were consecutively enrolled in our prospective study. Concentrations of hsTnT and CKMB were measured from serial blood samples directly before and after the procedure, 4 and 20 hours later and at 3 months follow-up. Forty-seven patients (10 EPS, 12 AVNRT, 13 AFlu, 12 AF) with mean age of 55 ± 13 were included. hsTnT levels increased significantly in all groups after the procedures, while CKMB changed only in the AF group. hsTnT exceeded the reference value in all patients with ablation and in 80% of patients with EPS 4 hours post-ablation. Peak average hsTnT levels for EPS, AVNRT, AFlu were 24 ± 11, 260 ± 218 and 541 ± 233 ng/L, respectively. The highest hsTnT level was measured in the AF group (799 ± 433 ng/L). We found a positive correlation between hsTnT levels and ablation time after RFCA. The hsTnT levels significantly change after EPS and RFCA, in all patients who underwent ablation, and in 80% of those with EPS had hsTnT positivity in the early post-procedural phase. hsTnT levels depended significantly on the type of the subgroups and correlated with the ablation time. Awareness of those observations is essential to correctly interpret elevated hsTnT levels following RFCA. Orv Hetil. 2019; 160(14): 540-548.
Highlights
Levels of cardiac necroenzymes, high-sensitive troponin and creatine kinase muscle-brain (CKMB) increase as a result of a myocardial damage following catheter ablation
Patients undergoing radiofrequency ablation (RFCA) for various indications and electrophysiological studies (EPS) were consecutively enrolled in our prospective study
Concentrations of hsTnT and CKMB were measured from serial blood samples directly before and after the procedure, 4 and 20 hours later and at 3 months follow-up
Summary
A myocardialis necrosis mértékének vizsgálata eltérő supraventricularis szívritmuszavarok rádiófrekvenciás katéterablatiós kezelését követően. Célkitűzés: A magas érzékenységű troponin T (hsTnT) és a szívizom-specifikus kreatin-kináz (CKMB) szintje középtávú változásának elemzése pitvarfibrilláció (PF), pitvari flutter (PFlu), AV-csomó reentry tachycardia (AVNRT) rádiófrekvenciás katéteres ablatióját követően, illetve elektrofiziológiai vizsgálat után. Módszer: Rádiófrekvenciás ablatión, illetve elektrofiziológiai vizsgálaton átesett betegeket vontunk be konszekutívan prospektív vizsgálatunkba. A hsTnT-szint négy órával a beavatkozást követően az összes ablatión átesett betegnél és az elektrofiziológiai vizsgálaton átesett betegek 80%-ánál meghaladta a referenciatartományt. A legmagasabb hsTnT-szint a PF-ablatiós csoportban volt kimutatható 20 órával az ablatio után (799 ± 433 ng/l). Pozitív korrelációt találtunk a rádiófrekvenciás ablatiót követő hsTnT-szint és az ablatio ideje között. Következtetések: A hsTnT alkalmas a rádiófrekvenciás ablatio és az elektrofiziológiai vizsgálat utáni myocardialis necrosis vizsgálatára, az ablatión átesett betegek mindegyikénél; elektrofiziológiai vizsgálat után 80%-ban pozitív a hsTnT. A fentiekben leírt megfigyelések iránymutatásként szolgálnak a rádiófrekvenciás ablatio utáni hsTnT-szint megfelelő értelmezéséhez.
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