RESUMEN
PURPOSE: Increasing numbers of transseptal punctures (TSP) are performed for different cardiac interventions, especially for left atrial (LA) ablation of atrial fibrillation (AF). Significant TSP-related complications may occur even by experienced operators. Any strategies to mitigate these should be adopted. Previous reports have confirmed the safety and efficacy of the first generation nitinol guidewire for TSP. The objective was to assess the safety and efficacy of a new nitinol 'needle free' SafeSept guidewire (NFSG) for TSP. The distal J-shaped tip (0.014 in.) of the NFSG is unchanged in design; however, the shaft is thicker (0.0315 in.) and stiffer. METHODS: This is a multicentre study evaluating TSP without a transseptal needle, using the NFSG via a standard transseptal sheath-dilator, in patients with an indication for TSP. RESULTS: A total of 145 consecutive unselected patients were studied. The mean patient age was 59 ± 15. Thirty-one (21.4%) were female and 43 (29.7%) had a previous procedure requiring TSP. The mean transverse LA diameter was 4.0 ± 0.8 cm. AF or LA tachycardia comprised the major indication for TSP (n = 115). Transesophageal echocardiography for direct guidance of TSP was utilised in cases performed under general anesthesia (n = 66, 45.5%). LA access by TSP using the NFSG was achieved successfully in 100% of cases after 1.6 ± 2.3 passes. There were no TSP or other major procedural complications. CONCLUSIONS: Use of the NFSG appears to be a safe and effective method in performing TSP. The major improvement in the design of the NFSG is that TSP can be performed without a transseptal needle and exchange for a standard guidewire is not required upon establishing LA access.