TY - JOUR
T1 - Effect of Institutional Experience on Outcomes of Alcohol Septal Ablation for Hypertrophic Obstructive Cardiomyopathy
AU - Veselka, Josef
AU - Faber, Lothar
AU - Jensen, Morten Kvistholm
AU - Cooper, Robert
AU - Januska, Jaroslav
AU - Krejci, Jan
AU - Bartel, Thomas
AU - Dabrowski, Maciej
AU - Hansen, Peter Riis
AU - Almaas, Vibeke Marie
AU - Seggewiss, Hubert
AU - Horstkotte, Dieter
AU - Adlova, Radka
AU - Bundgaard, Henning
AU - Ten Berg, Jurriën
AU - Liebregts, Max
N1 - Copyright © 2017 Canadian Cardiovascular Society. Published by Elsevier Inc. All rights reserved.
PY - 2018/1
Y1 - 2018/1
N2 - Background The current American College of Cardiology Foundation/American Heart Association guidelines on hypertrophic cardiomyopathy state that institutional experience is a key determinant of successful outcomes and lower complication rates of alcohol septal ablation (ASA). The aim of this study was to evaluate the safety and efficacy of ASA according to institutional experience with the procedure. Methods We retrospectively evaluated 1310 patients with symptomatic obstructive hypertrophic cardiomyopathy who underwent ASA and were divided into 2 groups. The first-50 group consisted of the first consecutive 50 patients treated at each centre, and the over-50 group consisted of patients treated thereafter (patients 51 and above). Results In the 30-day follow-up, there was a significant difference in the occurrence of major cardiovascular adverse events (21% in the first-50 group vs 12% in the over-50 group; P < 0.01), which was driven by the occurrence of cardiovascular deaths (2.1% vs 0.4%; P = 0.01) and implanted pacemakers (15% vs 9%; P < 0.01). In the long-term follow-up (5.5 ± 4.1 years), the first-50 group was associated with a significantly higher occurrence of major adverse events (P < 0.01) and higher cardiovascular mortality (P < 0.01). Also, patients in the first-50 group were more likely to self-report dyspnea of New York Heart Association class III/IV (16% vs 10%), to have a left ventricular outflow gradient > 30 mm Hg (16% vs 10%) at the last clinical check-up (P < 0.01 for both), and a probability of repeated septal reduction therapy (P = 0.03). Conclusions An institutional experience of > 50 ASA procedures was associated with a lower occurrence of ASA complications, better cardiovascular survival, better hemodynamic and clinical effect, and less need for repeated septal reduction therapy.
AB - Background The current American College of Cardiology Foundation/American Heart Association guidelines on hypertrophic cardiomyopathy state that institutional experience is a key determinant of successful outcomes and lower complication rates of alcohol septal ablation (ASA). The aim of this study was to evaluate the safety and efficacy of ASA according to institutional experience with the procedure. Methods We retrospectively evaluated 1310 patients with symptomatic obstructive hypertrophic cardiomyopathy who underwent ASA and were divided into 2 groups. The first-50 group consisted of the first consecutive 50 patients treated at each centre, and the over-50 group consisted of patients treated thereafter (patients 51 and above). Results In the 30-day follow-up, there was a significant difference in the occurrence of major cardiovascular adverse events (21% in the first-50 group vs 12% in the over-50 group; P < 0.01), which was driven by the occurrence of cardiovascular deaths (2.1% vs 0.4%; P = 0.01) and implanted pacemakers (15% vs 9%; P < 0.01). In the long-term follow-up (5.5 ± 4.1 years), the first-50 group was associated with a significantly higher occurrence of major adverse events (P < 0.01) and higher cardiovascular mortality (P < 0.01). Also, patients in the first-50 group were more likely to self-report dyspnea of New York Heart Association class III/IV (16% vs 10%), to have a left ventricular outflow gradient > 30 mm Hg (16% vs 10%) at the last clinical check-up (P < 0.01 for both), and a probability of repeated septal reduction therapy (P = 0.03). Conclusions An institutional experience of > 50 ASA procedures was associated with a lower occurrence of ASA complications, better cardiovascular survival, better hemodynamic and clinical effect, and less need for repeated septal reduction therapy.
KW - Ablation Techniques/adverse effects
KW - Age Factors
KW - Cardiac Output, Low
KW - Cardiomyopathy, Hypertrophic/mortality
KW - Cardiovascular Diseases/mortality
KW - Dyspnea/etiology
KW - Electric Countershock/statistics & numerical data
KW - Ethanol/administration & dosage
KW - Europe/epidemiology
KW - Female
KW - Heart Rate
KW - Heart Septum/surgery
KW - Humans
KW - Male
KW - Middle Aged
KW - Pacemaker, Artificial/statistics & numerical data
KW - Registries
KW - Retreatment
KW - Retrospective Studies
KW - Stroke Volume
U2 - 10.1016/j.cjca.2017.10.020
DO - 10.1016/j.cjca.2017.10.020
M3 - Journal article
C2 - 29275877
SN - 0828-282X
VL - 34
SP - 16
EP - 22
JO - Canadian Journal of Cardiology
JF - Canadian Journal of Cardiology
IS - 1
ER -