Left sided ablation for Atrioventricular Nodal Re-entrant Tachycardia: Frequency, Characteristics and Outcomes

Catheter ablation via the left atrium for atrioventricular nodal reentrant tachycardia: A narrative review

“…The flow diagram of the literature search, which yielded 30 articles, is presented in Figure 6 . 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 There were 3 cohort studies, 26 , 46 , 51 3 cases series, 24 , 29 , 47 and 24 case reports. These articles described 79 patient experiences.…”

“…There were 7 articles, counting both papers with overlapping patients, that presented the number of patients from which the left atrial ablation patients were derived. 24 , 26 , 37 , 46 , 47 , 51 , 52 The study by Stavrakis and colleagues 47 was excluded, as it only reported patients with left atrial ablation at the posteroinferior mitral valve AV junction segment and not the number of patients with left atrial ablation at any mitral valve AV junction segment.…”

“…There were 3 articles that reported the number of patients undergoing catheter ablation via the left atrium from populations that included any AVNRT: 1 of 313 (0.3%) from Alhumaid and colleagues, 37 15 of 1342 (1.1%) from Katritsis and colleagues, 46 and 5 of 154 (3.2%) from Narayanan and associates. 51 There were 3 articles that reported the number of patients undergoing catheter ablation via the left atrium from populations that included only typical AVNRT: 3 of 420 (0.7%) from Sorbera and colleagues, 24 9 of 587 (1.5%) from Kilic and colleagues, 26 and 4 of 221 (1.8%) from Katritsis and colleagues. 52 Therefore, the estimated prevalence of the need for catheter ablation via the left atrium was 1.2% (21 of 1809) for any AVNRT and 1.3% (16 of 1228) for only typical AVNRT.…”

“…Narayanan and colleagues 51 described a retrospective cohort of 5 of 154 patients who underwent left atrial ablation for any AVNRT at Medicover Hospitals in India. When patients with left atrial ablation were compared to those that only had right-sided ablation, radiofrequency times were significantly longer (50.8 ± 16.9 minutes vs 9.9 ± 8.5 minutes; P = .005), as were procedure times (166.0 ± 35.0 minutes vs 79.6 ± 35.9 minutes; P = .004).…”

“…A best estimation of acute success and long-term freedom from recurrence for patients who underwent catheter ablation of the slow pathway via the left atrium after failure in the right atrium, with or without coronary sinus ablation, used the 3 cohort studies. 26 , 46 , 51 Of the 29 patients included, there were 3 acute failures for an overall acute success rate of 89.7%. Of the 26 remaining patients who achieved acute success, there was 1 recurrence for an overall long-term freedom from recurrence rate of 96.2%.…”