Morfologia obszaru krytycznego w aspekcie zabiegÓw ablacji prawoprzedsionkowych arytmii nawrotnych

The critical area is located in the right atrium where the radiofrequency ablation of arrhythmogenic foci is performed. In some cases this procedure is ineffective. The aim of our study was to describe the morphology of the critical area and the distances between the structures. We also wanted to find out if the morphology can cause the failure of the ablation. The research was carried out on 45 human hearts, both sexes (33 male and 12 female) aged 22 to 81, average 42. Classic anatomical methods were applied. Measurements were made with vernier calliper gauge. We measured the distances between VCS-FO, VCI-FO, SC-FO, SC-VCI, SC-CVT, ISC-CUT, hVCI-CVT, VCI-CVT (VCS - Vena Cava Superior, VCI - Vena Cava Inferior, FO - Fossa Ovalis, SC - Sinus Coronarius, CVT - attachment of septal Cuspis Valvulae Tricuspidalis, ISC - low Sinus Coronarius, hVCI - high Vena Cava Superior). Furthermore, we described the morphology of the surface between those structures as smooth (G), lightly plicated (LP), medium plicated (SP), havely plicated (MP). Conclusions: the distances between the structures are individualy variated, the surface between some structures is more plicated than between others in most cases, the morphology of the surface can be very significant in radiofrequency ablation in the right atrium.