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Emmert MY, Bonatti J, Caliskan E, Gaudino M, Grabenwöger M, Grapow MT, Heinisch PP, Kieser-Prieur T, Kim KB, Kiss A, Mouriquhe F, Mach M, Margariti A, Pepper J, Perrault LP, Podesser BK, Puskas J, Taggart DP, Yadava OP, Winkler B. Consensus statement-graft treatment in cardiovascular bypass graft surgery. Front Cardiovasc Med 2024; 11:1285685. [PMID: 38476377 PMCID: PMC10927966 DOI: 10.3389/fcvm.2024.1285685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 01/15/2024] [Indexed: 03/14/2024] Open
Abstract
Coronary artery bypass grafting (CABG) is and continues to be the preferred revascularization strategy in patients with multivessel disease. Graft selection has been shown to influence the outcomes following CABG. During the last almost 60 years saphenous vein grafts (SVG) together with the internal mammary artery have become the standard of care for patients undergoing CABG surgery. While there is little doubt about the benefits, the patency rates are constantly under debate. Despite its acknowledged limitations in terms of long-term patency due to intimal hyperplasia, the saphenous vein is still the most often used graft. Although reendothelialization occurs early postoperatively, the process of intimal hyperplasia remains irreversible. This is due in part to the persistence of high shear forces, the chronic localized inflammatory response, and the partial dysfunctionality of the regenerated endothelium. "No-Touch" harvesting techniques, specific storage solutions, pressure controlled graft flushing and external stenting are important and established methods aiming to overcome the process of intimal hyperplasia at different time levels. Still despite the known evidence these methods are not standard everywhere. The use of arterial grafts is another strategy to address the inferior SVG patency rates and to perform CABG with total arterial revascularization. Composite grafting, pharmacological agents as well as latest minimal invasive techniques aim in the same direction. To give guide and set standards all graft related topics for CABG are presented in this expert opinion document on graft treatment.
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Affiliation(s)
- Maximilian Y. Emmert
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charite (DHZC), Berlin, Germany
- Institute for Regenerative Medicine (IREM), University of Zurich, Zurich, Switzerland
| | - Johannes Bonatti
- Department of Cardiothoracic Surgery, UPMC Heart and Vascular Institute, University of Pittsburgh, Pittsburgh, PA, United States
| | - Etem Caliskan
- Department of Cardiothoracic and Vascular Surgery, Deutsches Herzzentrum der Charite (DHZC), Berlin, Germany
| | - Mario Gaudino
- Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, NY, United States
| | - Martin Grabenwöger
- Sigmund Freud Private University, Vienna, Austria
- Department of Cardiovascular Surgery KFL, Vienna Health Network, Vienna, Austria
| | | | - Paul Phillip Heinisch
- German Heart Center Munich, Technical University of Munich, School of Medicine, Munich, Germany
| | - Teresa Kieser-Prieur
- LIBIN Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
| | - Ki-Bong Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Attila Kiss
- Ludwig Boltzmann Institute at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | | | - Markus Mach
- Department of Cardiac Surgery, Medical University Vienna, Vienna, Austria
| | - Adrianna Margariti
- The Wellcome-Wolfson Institute of Experimental Medicine, Belfast, United Kingdom
| | - John Pepper
- Cardiology and Aortic Centre, Royal Brompton Hospital, Royal Brompton and Harefield NHS Foundation Trust, London, United Kingdom
| | | | - Bruno K. Podesser
- Ludwig Boltzmann Institute at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - John Puskas
- Department of Cardiovascular Surgery, Mount Sinai Morningside, New York, NY, United States
| | - David P. Taggart
- Nuffield Dept Surgical Sciences, Oxford University, Oxford, United Kingdom
| | | | - Bernhard Winkler
- Department of Cardiovascular Surgery KFL, Vienna Health Network, Vienna, Austria
- Ludwig Boltzmann Institute at the Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
- Karld Landsteiner Institute for Cardiovascular Research Clinic Floridsdorf, Vienna, Austria
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Hwang HY, Paeng JC, Kang J, Jang MJ, Kim KB. Relation between functional coronary artery stenosis and graft occlusion after coronary artery bypass grafting. J Thorac Cardiovasc Surg 2020; 161:1010-1018.e1. [PMID: 33431208 DOI: 10.1016/j.jtcvs.2020.11.072] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 10/31/2020] [Accepted: 11/17/2020] [Indexed: 01/16/2023]
Abstract
OBJECTIVES This study was conducted to evaluate graft patency rates during the 5 years after coronary artery bypass grafting according to the functional significance of the coronary artery stenosis, as determined by myocardial single-photon-emission computed tomography. METHODS Two hundred ninety-five patients who underwent coronary artery bypass grafting using Y-composite grafts based on the in situ left internal thoracic artery, and in whom preoperative stress/rest myocardial single-photon-emission computed tomography and 1-year angiographies were available were enrolled. Seven hundred sixty-nine and 262 distal anastomoses were constructed to ischemic and nonischemic areas, respectively. One-year and 5-year angiographic occlusion rates were evaluated in all and 80.3% of study patients, respectively. Factors associated with graft occlusion were evaluated using generalized linear mixed-effects models. RESULTS Overall 1- and 5-year graft occlusion rates were 4.3% (44 of 1031 distal anastomoses) and 5.5% (45 out of 820), respectively. The occlusion rates of grafts bypassed to vessels with functionally significant and insignificant stenosis were 2.7% (21 out of 769) and 8.8% (23 out of 262) at 1 year and were 4.0% (25 out of 618) and 9.9% (20 out of 202) at 5 years, respectively. Graft occlusion during the 5 years after coronary artery bypass grafting was associated with the functional significance of coronary artery stenosis (odds ratio, 0.50; 95% confidence interval, 0.28-0.92). The odds ratio of the graft occlusion according to functional ischemia was lower and significant in grafts to arteries with intermediate stenosis (stenosis ≥70% but <90%; odds ratio, 0.34; 95% confidence interval, 0.13-0.93) whereas it was higher and insignificant in grafts to arteries with severe stenosis (≥90% stenosis; odds ratio, 0.76; 95% confidence interval, 0.33-1.72). CONCLUSIONS Graft occlusion during the 5 years after coronary artery bypass grafting was associated with the functional significance of coronary artery stenosis, particularly when the stenosis degree was not severe.
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Affiliation(s)
- Ho Young Hwang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jeehoon Kang
- Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Myoung-Jin Jang
- Medical Research Collaborating Center, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ki-Bong Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Hwang HY, Yeom SY, Park EA, Lee W, Jang MJ, Kim KB. Serial cardiac magnetic resonance imaging after surgical coronary revascularization for left ventricular dysfunction. J Thorac Cardiovasc Surg 2020; 159:1798-1805. [DOI: 10.1016/j.jtcvs.2019.04.109] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/11/2019] [Accepted: 04/27/2019] [Indexed: 10/26/2022]
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Hwang HY, Yeom SY, Choi JW, Oh SJ, Park EA, Lee W, Kim KB. Cardiac Magnetic Resonance Predictor of Ventricular Function after Surgical Coronary Revascularization. J Korean Med Sci 2017; 32:2009-2015. [PMID: 29115084 PMCID: PMC5680501 DOI: 10.3346/jkms.2017.32.12.2009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 09/10/2017] [Indexed: 11/20/2022] Open
Abstract
We evaluated echocardiographic changes of left ventricular (LV) function in coronary artery bypass grafting (CABG) patients with LV dysfunction, and examined cardiac magnetic resonance (CMR) parameters associated with improved LV function. Seventy-seven CABG patients presenting with decreased LV ejection fraction (LVEF, ≤ 35%) and who underwent preoperative gadolinium-enhanced CMR were enrolled. A 16-segment model was used to analyze CMR imaging. A viable myocardial segment was defined as ≤ 50% transmural extent of late gadolinium enhancement. Serial echocardiographic examinations were performed preoperatively, pre-discharge (median 6 days), and during postoperative year 1 (median 11 months) in 70 patients. Predictors of absolute increase in LVEF (≥ 5%) and proportional changes in LVEF were analyzed. Serial echocardiography demonstrated that LVEF measured 28.6% ± 5.4% preoperatively, 31.5% ± 8.0% median 6 days, and 42.1% ± 10.5% median 11 months postoperatively. Absolute increase of LVEF was observed in 27 patients at pre-discharge and in 24 patients by median 11 months. Proportional changes in LVEF at postoperative median 6 days and 11 months were 14% ± 28% and 57% ± 45%, respectively. The median number of viable myocardial segments was 14 (range, 9-16) in the 16 segment CMR model. Multivariable models demonstrated that the median number of overall viable myocardial segments (≥ 14) in preoperative CMR was associated with absolute increase (P = 0.046) and proportional changes (P = 0.005) in LVEF. In conclusion, the number of viable myocardial segments (≥ 14) in preoperative CMR predicted LV function improvement after CABG in patients with LV dysfunction.
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Affiliation(s)
- Ho Young Hwang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sang Yoon Yeom
- Department of Thoracic and Cardiovascular Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Jae Woong Choi
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea
| | - Se Jin Oh
- Department of Thoracic and Cardiovascular Surgery, Seoul Metropolitan Government-Seoul National University Boramae Medical Center, Seoul, Korea
| | - Eun Ah Park
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Whal Lee
- Department of Radiology, Seoul National University Hospital, Seoul, Korea
| | - Ki Bong Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea.
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Phase analysis of gated myocardial perfusion single-photon emission computed tomography after coronary artery bypass graft surgery: reflection of late reverse remodeling in patients with patent grafts after coronary artery bypass graft surgery. Nucl Med Commun 2016; 37:1139-47. [PMID: 27341412 DOI: 10.1097/mnm.0000000000000565] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Phase analysis using gated myocardial perfusion single-photon emission computed tomography (GMPS) is a tool used to assess left ventricular (LV) dyssynchrony. We attempted to investigate the role of LV dyssynchrony assessed by GMPS using phase analysis for the late LV function after coronary artery bypass graft surgery (CABG) in patients with patent grafts. METHODS A total of 45 patients who received off-pump CABG with patent graft 1 year after CABG and preserved perfusion reserve were enrolled retrospectively. All patients underwent GMPS before and 3 months and 1 year after CABG. Using the Emory Cardiac Toolbox, both phase histogram bandwidth (PBW) and phase SD derived by phase analysis were used for the analysis, in addition to the conventional perfusion parameters. For the evaluation of LV function, transthoracic echocardiography was also performed. RESULTS All of the patients showed perfusion improvement (paired t-test, P<0.05) after CABG. Nonetheless, 30 of 45 patients showed LV dyssynchrony 3 months after CABG. One year after CABG, however, 25 out of 45 patients showed reverse remodeling. Among those patients with reverse remodeling, 19 patients had shown LV 3 months after CABG. Using stepwise logistic regression with forward selection, PBW 3 months after CABG could predict reverse remodeling 1 year after CABG (odds ratio 1.03, P<0.05). Using receiver operating characteristic analysis, PBW 3 months after CABG had the largest area under the curve to detect reverse remodeling 1 year after CABG with a cut-off value of 82 (sensitivity 0.95, specificity 0.56, P<0.001). CONCLUSION Postoperative LV dyssynchrony assessed by GMPS using phase analysis may reflect late reverse remodeling and potential of further functional improvement in patients with patent grafts and preserved perfusion reserve after CABG.
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Hwang HY, Paeng JC, Oh HC, Kim YH, Kim KB. Comparison of perfusion and thickening between vein and right internal thoracic artery composite grafts from a randomized trial substudy. J Thorac Cardiovasc Surg 2015; 150:1187-94. [PMID: 26383005 DOI: 10.1016/j.jtcvs.2015.08.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 07/29/2015] [Accepted: 08/01/2015] [Indexed: 11/29/2022]
Abstract
BACKGROUND Improvements in myocardial perfusion and thickening were compared in coronary artery bypass grafting patients who received saphenous vein (SV) Y-composite grafts versus those who received right internal thoracic artery ([R]ITA) Y-composite grafts. METHODS Of the 224 patients enrolled in a randomized clinical trial, 116 patients (SV group, n = 65; RITA group, n = 51) in whom myocardial single-photon-emission computed tomography was performed preoperatively, and at 3 months and 1 year postoperatively, were retrospectively studied. A 20-segment model was adopted, and a total of 792 ischemic myocardial segments (SV group, n = 443; RITA group, n = 349) were analyzed. The reversibility score (rest minus stress perfusion value) as an indicator of ischemic myocardium, and Z-values for segmental myocardial thickening, were calculated. RESULTS Compared with preoperative values, both myocardial perfusion and segmental myocardial thickening had improved significantly at 3 months and 1 year postoperatively (reversibility scores [mean ± SD] were, respectively: 13.5 ± 8.0 vs 5.8 ± 6.2 and 5.1 ± 6.2, P < .001; Z-values were -1.13 ± 1.53 vs -0.62 ± 1.40 and -0.67 ± 1.35, P < .001). Mixed-effect model analyses showed no differences in improvements in myocardial perfusion and segmental myocardial thickening between the 2 groups 1 year after revascularization. Separate analysis demonstrated less improvement of myocardial perfusion in the right coronary artery territory of the RITA group than the SV group, with marginal significance (P = .056). CONCLUSIONS Improvements in myocardial perfusion and segmental myocardial thickening were similar between the 2 groups at 1 year after revascularization. The SV, versus the right ITA, composite graft may be more beneficial in perfusion improvement of the right coronary artery territory.
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Affiliation(s)
- Ho Young Hwang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Jin Chul Paeng
- Department of Nuclear Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Hong Chul Oh
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Yong Han Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Ki-Bong Kim
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea.
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Hwang HY, Oh HC, Kim YH, Kim KB. Complete Revascularization of the Three-Vessel Territories Using a Left Internal Thoracic Artery Composite Graft. Ann Thorac Surg 2015; 100:59-66. [DOI: 10.1016/j.athoracsur.2015.01.068] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Revised: 01/17/2015] [Accepted: 01/27/2015] [Indexed: 11/29/2022]
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Cost-effectiveness of coronary CT angiography in patients with chest pain: Comparison with myocardial single photon emission tomography. J Cardiovasc Comput Tomogr 2015; 9:428-37. [PMID: 25977116 DOI: 10.1016/j.jcct.2015.02.008] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 12/20/2014] [Accepted: 02/14/2015] [Indexed: 11/21/2022]
Abstract
BACKGROUND Coronary CT angiography (CCTA) has been proven accurate and is incorporated in clinical recommendations for coronary artery disease (CAD) diagnosis workup, but cost-effectiveness data, especially in comparison to other methods such as myocardial single photon emission CT (SPECT) are insufficient. OBJECTIVE To compare the cost-effectiveness of CCTA and myocardial SPECT in a real-world setting. METHODS We performed a retrospective cohort study on consecutive patients with suspected CAD and a pretest probability between 10% and 90%. Test accuracy was compared by correcting referral bias to coronary angiography depending on noninvasive test results based on the Bayes' theorem and also by incorporating 1-year follow-up results. Cost-effectiveness was analyzed using test accuracy and quality-adjusted life year (QALY). The model using diagnostic accuracy used the number of patients accurately diagnosed among 1000 persons as the effect and contained only expenses for diagnostic testing as the cost. In the model using QALY, a decision tree was developed, and the time horizon was 1 year. RESULTS CCTA was performed in 635 patients and SPECT in 997 patients. An accurate diagnosis per 1000 patients was achieved in 725 patients by CCTA vs 661 patients by SPECT. In the model using diagnostic accuracy, CCTA was more effective and less expensive than SPECT ($725.38 for CCTA vs $661.46 for SPECT). In the model using QALY, CCTA was generally more effective in terms of life quality (0.00221 QALY) and cost ($513) than SPECT. However, cost utility varied among subgroups, with SPECT outperforming CCTA in patients with a pretest probability of 30% to 60% (0.01890 QALY; $113). CONCLUSION These results suggest that CCTA may be more cost-effective than myocardial SPECT.
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Kim HL, Kim YJ, Lee SP, Park EA, Paeng JC, Kim HK, Lee W, Cho GY, Zo JH, Choi DJ, Sohn DW. Incremental prognostic value of sequential imaging of single-photon emission computed tomography and coronary computed tomography angiography in patients with suspected coronary artery disease. ACTA ACUST UNITED AC 2014; 15:878-85. [DOI: 10.1093/ehjci/jeu010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wi JH, Joo HC, Youn YN, Song SW, Kim TH, Yoo KJ. Comparison of Radial Artery and Saphenous Vein Composite Y Grafts during Off-pump Coronary Artery Bypass. THE KOREAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2013; 46:265-73. [PMID: 24003407 PMCID: PMC3756157 DOI: 10.5090/kjtcs.2013.46.4.265] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 02/03/2013] [Accepted: 03/07/2013] [Indexed: 11/16/2022]
Abstract
Background The safety and efficacy of arterial composite grafts for total arterial revascularization have been demonstrated. The saphenous vein (SV) is a widely used graft because of its accessibility, sufficient length, and ease of manipulation. Our aim was to compare mid-term outcomes of saphenous vein Y-grafts with radial artery Y-grafts joined by anastomosis to the left internal thoracic artery. Materials and Methods Records of off-pump coronary artery bypass grafting with composite Y-grafts based on the left internal thoracic artery technique in 552 patients were analyzed retrospectively. After propensity score matching, 79 radial arterial (RA) composite grafts (RA group) and 79 saphenous vein composite grafts (SV group) were compared. The duration of mean follow-up was 24.6±14.6 months (range, 1 to 55 months). Results There were no differences in surgical mortality, all-cause mortality, or morbidity among the groups. Rates of 4-year survival were 91.7% and 96.3% in the RA and SV groups, respectively (p=0.519). The coronary reintervention-free survival rate and freedom from major adverse cardiovascular or cerebrovascular events were similar in the two groups (p=0.685, p=0.564). Conclusion Construction of composite Y-grafts using the radial artery or saphenous vein showed similar mid-term results. Long-term follow-up and randomized trials will be needed to confirm our present conclusions.
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Affiliation(s)
- Jin-Hong Wi
- Division of Cardiovascular Surgery, Severance Cardiovascular Hospital, Yonsei University College of Medicine, Korea
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A randomized comparison of the Saphenous Vein Versus Right Internal Thoracic Artery as a Y-Composite Graft (SAVE RITA) trial: Early results. J Thorac Cardiovasc Surg 2012; 144:1027-33. [DOI: 10.1016/j.jtcvs.2012.07.054] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2012] [Revised: 07/08/2012] [Accepted: 07/26/2012] [Indexed: 11/20/2022]
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Hwang HY, Lim JH, Oh SJ, Paeng JC, Kim KB. Improved functional mitral regurgitation after off-pump revascularization in acute coronary syndrome. Ann Thorac Surg 2012; 94:1157-65; discussion 1165. [PMID: 22835551 DOI: 10.1016/j.athoracsur.2012.04.118] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 04/26/2012] [Accepted: 04/30/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND We evaluated the effect of isolated off-pump coronary artery bypass grafting on functional ischemic mitral regurgitation (IMR) associated with acute coronary syndrome. METHODS Of 1,419 acute coronary syndrome patients who underwent coronary revascularization between 2000 and 2010 (1,324 off-pump and 95 on-pump), 59 OPCAB patients had greater than mild degree functional IMR preoperatively (31 mild to moderate, 23 moderate, 5 severe). Clinical outcomes and results from echocardiography, angiography, and myocardial single-photon emission computed tomography performed early and 1 year postoperatively were analyzed. RESULTS Operative mortality was 5.1% (3 of 59). All survivors underwent early postoperative echocardiograms, which showed 0 patients with worsened IMR; 41 with less than or equal to mild degree residual IMR (NMR group); and 15 with greater than mild degree IMR (RMR group). Myocardial single-photon emission computed tomography revealed that RMR patients had more reversible ischemic myocardial segments preoperatively than NMR patients (p=0.009). Successful right coronary revascularization with proven graft patency was a predictor of early improvement of IMR (p=0.024). There were no differences in postoperative morbidities between the 2 groups. One-year follow-up echocardiograms demonstrated further improvement in 10 of 13 RMR patients. No patients experienced mitral valve-related events during follow-up. Overall survival and major adverse cardiac event-free survival rates at 5 years were 84.6% and 78.1%, respectively, with no intergroup differences. CONCLUSIONS Most functional IMR associated with acute coronary syndrome, including severe degree IMR, improved during the first postoperative year after off-pump coronary artery bypass grafting.
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Affiliation(s)
- Ho Young Hwang
- Department of Thoracic and Cardiovascular Surgery, Seoul National University Hospital, Seoul, Korea
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Hwang HY, Kim JS, Cho KR, Kim KB. Bilateral Internal Thoracic Artery In Situ Versus Y-Composite Graftings: Five-Year Angiographic Patency and Long-Term Clinical Outcomes. Ann Thorac Surg 2011; 92:579-85; discussion 585-6. [DOI: 10.1016/j.athoracsur.2011.03.145] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Revised: 03/21/2011] [Accepted: 03/22/2011] [Indexed: 11/30/2022]
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Hwang HY, Kim JS, Kim KB. Angiographic Equivalency of Off-Pump Saphenous Vein and Arterial Composite Grafts at One Year. Ann Thorac Surg 2010; 90:516-21. [PMID: 20667342 DOI: 10.1016/j.athoracsur.2010.04.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2010] [Revised: 04/02/2010] [Accepted: 04/07/2010] [Indexed: 10/19/2022]
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Improved Myocardial Perfusion and Thickening After Off-Pump Revascularization: 5-Year Follow-Up. Ann Thorac Surg 2009; 88:1419-25. [DOI: 10.1016/j.athoracsur.2009.07.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2009] [Revised: 06/27/2009] [Accepted: 07/02/2009] [Indexed: 11/17/2022]
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