PP97 Conduction System Pacing Implantation Through Electroanatomic Mapping-Guided Versus Fluoroscopy In Patients With Severe Bradyarrhythmias

IntroductionElectroanatomic mapping (EAM) has been shown to be an alternative procedure to fluoroscopy for the implantation of conduction system pacing (His-bundle pacing [HBP] and left bundle branch pacing [LBBP]) in patients with severe bradyarrhythmias, mainly those vulnerable to ionizing radiation. However, the evidence of its beneficial and harmful effects has not been assessed in a systematic review (SR).MethodsAn SR of the available scientific literature was conducted on the safety, effectiveness, and cost-effectiveness of implantation of the HBP and LBBP using EAM system versus fluoroscopy in patients with bradycardia with an indication for pacing therapy. Cochrane methodology and PRISMA statement for reporting were followed. A partial economic evaluation was carried out to compare the costs of both pacemaker implantation strategies from the perspective of the Spanish National Health System. A budget impact analysis was also conducted with a five-year horizon.ResultsSeven comparative observational studies (N=259) analyzing the use of EAM versus fluoroscopy were selected. Statistically significant differences were observed in total fluoroscopy time: −9.87 minutes (95% confidence interval [CI]: −14.20, −5.53; p