TY - JOUR
T1 - Meta-analysis on the impact of percutaneous coronary intervention of chronic total occlusions on left ventricular function and clinical outcome
AU - Hoebers, Loes P.
AU - Claessen, Bimmer E.
AU - Elias, Joelle
AU - Dangas, George D.
AU - Mehran, Roxana
AU - Henriques, José P.S.
N1 - Publisher Copyright:
© 2015 Elsevier Ireland Ltd. All rights reserved.
PY - 2015/5/6
Y1 - 2015/5/6
N2 - Background: Percutaneous coronary intervention (PCI) of chronic total occlusions (CTOs) may have a beneficial effect on survival through a better-preserved or improved LVEF. Current literature consists of small observational studies therefore we performed aweighted meta-analysis on the impact of revascularization of CTOs on left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV) and long-term mortality. Methods: We conducted a meta-analysis evaluating LVEF before and after CTO PCI and long-term mortality. No language or time restrictions were applied. References from the identified articles and reviews were examined to find additional relevant manuscripts. Results: Of the 812 citations, 34 studies performed between 1987-2014 in 2243 patients were eligible for LVEF and 27 studies performed between 1990-2013 in 11,085 patients with success and 4347 patients that failed CTO PCI were eligible for long-term mortality. After successful CTO PCI, LVEF increased with 4.44% (95% CI: 3.52-5.35, p b 0.01) compared to baseline. In a small cohort of ~70 patients, no significant difference in LVEF was observed after non-successful CTO PCI or reocclusion. Additionally, 8 studies reported the change in left ventricular end-diastolic volume (LVEDV) in a total of 412 patients. LVEDV decreased with 6.14 ml/m2 (95% CI: -9.31 to -2.97, p b 0.01). Successful CTO PCI was also associated with reduced mortality in comparison with failed CTO PCI (OR: 0.52, 95% CI: 0.43-0.62, p-value b 0.01). Conclusions: The current meta-analysis revealed that successful recanalization of a CTO resulted in an overall improvement of 4.44% absolute LVEF points, reduced adverse remodeling and an improvement of survival (OR: 0.52).
AB - Background: Percutaneous coronary intervention (PCI) of chronic total occlusions (CTOs) may have a beneficial effect on survival through a better-preserved or improved LVEF. Current literature consists of small observational studies therefore we performed aweighted meta-analysis on the impact of revascularization of CTOs on left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV) and long-term mortality. Methods: We conducted a meta-analysis evaluating LVEF before and after CTO PCI and long-term mortality. No language or time restrictions were applied. References from the identified articles and reviews were examined to find additional relevant manuscripts. Results: Of the 812 citations, 34 studies performed between 1987-2014 in 2243 patients were eligible for LVEF and 27 studies performed between 1990-2013 in 11,085 patients with success and 4347 patients that failed CTO PCI were eligible for long-term mortality. After successful CTO PCI, LVEF increased with 4.44% (95% CI: 3.52-5.35, p b 0.01) compared to baseline. In a small cohort of ~70 patients, no significant difference in LVEF was observed after non-successful CTO PCI or reocclusion. Additionally, 8 studies reported the change in left ventricular end-diastolic volume (LVEDV) in a total of 412 patients. LVEDV decreased with 6.14 ml/m2 (95% CI: -9.31 to -2.97, p b 0.01). Successful CTO PCI was also associated with reduced mortality in comparison with failed CTO PCI (OR: 0.52, 95% CI: 0.43-0.62, p-value b 0.01). Conclusions: The current meta-analysis revealed that successful recanalization of a CTO resulted in an overall improvement of 4.44% absolute LVEF points, reduced adverse remodeling and an improvement of survival (OR: 0.52).
KW - CTO
KW - Chronic total occlusion
KW - LVEDV
KW - LVEF
KW - Left ventricular function and mortality
KW - Meta-analysis
KW - Mortality
KW - Percutaneous coronary intervention
UR - http://www.scopus.com/inward/record.url?scp=84929192620&partnerID=8YFLogxK
U2 - 10.1016/j.ijcard.2015.03.164
DO - 10.1016/j.ijcard.2015.03.164
M3 - Article
C2 - 25828320
AN - SCOPUS:84929192620
SN - 0167-5273
VL - 187
SP - 90
EP - 96
JO - International Journal of Cardiology
JF - International Journal of Cardiology
IS - 1
ER -