BACKGROUND: Despite technical advancements, implantation of coronary sinus (CS) leads may be challenging, and dislocation remains a relevant clinical problem. OBJECTIVE: The aim of this study was to investigate the effectiveness, safety, and long-term outcome of stent implantation to anchor the lead to the wall of the CS side branch. METHODS: Stenting of a CS side branch was performed in 312 patients. The procedure was performed because of postoperative lead dislocation in 16 patients and because of an intraoperative unstable lead position or phrenic nerve stimulation in 296 cases. A bare metal coronary stent was introduced over a second guide wire in the same CS sheath. The stent was deposited 5-35 mm proximal to the most proximal electrode. Mechanical damage of the CS side branch or pericardial effusion was not observed owing to stenting. RESULTS: During follow-up (median 28.4, interquartile range 15-37, maximum 70 months), a clinically important increase in the left ventricular pacing threshold was found in four cases and reoperation was necessary in only two patients (0.6%). Phrenic nerve stimulation was observed in 18 instances, and repositioning with an ablation catheter was performed in seven cases. Impedance measurements did not suggest lead insulation failure. Three stented leads were extracted without complication after 3-49 months owing to infection, while four leads were extracted easily during heart transplantation after 7-27 months. CONCLUSION: Stent implantation to stabilize CS lead position seems to be an effective and safe procedure in prevention and treatment of CS lead dislocation in selected cases.
BACKGROUND: Despite technical advancements, implantation of coronary sinus (CS) leads may be challenging, and dislocation remains a relevant clinical problem. OBJECTIVE: The aim of this study was to investigate the effectiveness, safety, and long-term outcome of stent implantation to anchor the lead to the wall of the CS side branch. METHODS: Stenting of a CS side branch was performed in 312 patients. The procedure was performed because of postoperative lead dislocation in 16 patients and because of an intraoperative unstable lead position or phrenic nerve stimulation in 296 cases. A bare metal coronary stent was introduced over a second guide wire in the same CS sheath. The stent was deposited 5-35 mm proximal to the most proximal electrode. Mechanical damage of the CS side branch or pericardial effusion was not observed owing to stenting. RESULTS: During follow-up (median 28.4, interquartile range 15-37, maximum 70 months), a clinically important increase in the left ventricular pacing threshold was found in four cases and reoperation was necessary in only two patients (0.6%). Phrenic nerve stimulation was observed in 18 instances, and repositioning with an ablation catheter was performed in seven cases. Impedance measurements did not suggest lead insulation failure. Three stented leads were extracted without complication after 3-49 months owing to infection, while four leads were extracted easily during heart transplantation after 7-27 months. CONCLUSION: Stent implantation to stabilize CS lead position seems to be an effective and safe procedure in prevention and treatment of CS lead dislocation in selected cases.
Authors: László Gellér; Zoltán Salló; Levente Molnár; Tamás Tahin; Emin Evren Özcan; Valentina Kutyifa; István Osztheimer; Szabolcs Szilágyi; Nándor Szegedi; Pál Ábrahám; Astrid Apor; Klaudia Vivien Nagy; Annamária Kosztin; Dávid Becker; Szilvia Herczeg; Endre Zima; Béla Merkely Journal: Europace Date: 2019-08-01 Impact factor: 5.214
Authors: M Ziacchi; I Diemberger; A Corzani; C Martignani; A Mazzotti; G Massaro; C Valzania; C Rapezzi; G Boriani; M Biffi Journal: Sci Rep Date: 2018-09-05 Impact factor: 4.379