Characterization of the impact of catheter-tissue contact force in lesion formation during cavo-tricuspid isthmus ablation in an experimental swine model.

Aims: Catheter-tissue contact is critical for effective lesion creation. The objective of this study was to determine in an experimental swine model the pathological effects of cavo-tricuspid isthmus ablation using two systems that provide reliable measures of the pressure at the catheter tip during radiofrequency ablation procedures.

Methods And Results: We performed the procedure in eight pigs in our experimental electrophysiology laboratory after right femoral vein dissection and insertion of a 12 Fr.

Evolution of differentiated thyroid cancer during pregnancy in a community University Hospital in Buenos Aires, Argentina.

Objective: To analyze the presentation, follow-up and evolution of differentiated thyroid cancer (DTC) detected during pregnancy.

Subjects And Methods: Twenty nine women with DTC detected during pregnancy were analyzed. Group I (n = 13) was seen during pregnancy and DTC was diagnosed during gestation; detection of the nodule occurred during pregnancy (first trimester).