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Letsou GV, Musfee FI, Zhang Q, Loor G, Lee AD. Stroke and mortality rates after off-pump vs. pump-assisted/no-clamp coronary artery bypass grafting. THE JOURNAL OF CARDIOVASCULAR SURGERY 2022; 63:742-748. [PMID: 36168952 DOI: 10.23736/s0021-9509.22.12337-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
BACKGROUND Ascending aorta manipulation during on-pump coronary artery bypass grafting (CABG) surgery can release embolic matter and may cause stroke. Strategies for lowering the stroke rate associated with coronary artery bypass grafting surgery include off-pump surgery without cardiopulmonary bypass and pump-assisted surgery with minimal aortic manipulation (i.e., without aortic cross-clamping). We examined whether one approach is superior to the other in reducing stroke and perioperative mortality rates. METHODS We reviewed consecutive elective, urgent, and emergency off-pump/no-bypass and pump-assisted/no-clamp coronary artery bypass grafting procedures performed by a single surgeon at our institution from June 2011 through October 2017. RESULTS Of 570 patients analyzed, 395 (69.3%) underwent off-pump/no-bypass surgery, 43 (7.5%) underwent pump-assisted/no-clamp surgery, and 132 (23.2%) transitioned mid-procedure from off-pump/no-bypass to pump-assisted/no-clamp surgery. Patients who were >70 years old, were female, or had diabetes, cardiomegaly, or a history of myocardial infarction or congestive heart failure were more likely to undergo pump-assisted/no-clamp surgery or the combined technique. None of the pump-assisted/no-clamp patients had a stroke, versus 0.3% of the off-pump/no-bypass patients and 0.8% of the combination patients. Stroke and in-hospital mortality rates did not differ by technique. CONCLUSIONS A hybrid strategy incorporating off-pump, pump-assisted, and combined off-pump/pump-assisted techniques achieved very low stroke rates in patients undergoing coronary revascularization. Perioperative mortality was similar for all three techniques. Avoiding aortic clamping may be crucial for decreasing CABG-related stroke rates. Off-pump/no-bypass surgery had no significant advantage over the pump-assisted/no-clamp or combined techniques in reducing the stroke rate after coronary artery bypass grafting surgery.
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Affiliation(s)
- George V Letsou
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
- Division of Cardiothoracic Transplantation and Circulatory Support, Texas Heart Institute, Houston, TX, USA
| | - Fadi I Musfee
- Department of Epidemiology, Human Genetics, and Environmental Sciences, UT Health School of Public Health, Houston, TX, USA
| | - Qianzi Zhang
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
| | - Gabriel Loor
- Michael E. DeBakey Department of Surgery, Baylor College of Medicine, Houston, TX, USA
- Division of Cardiothoracic Transplantation and Circulatory Support, Texas Heart Institute, Houston, TX, USA
| | - Andrew D Lee
- Department of Anesthesiology, Baylor College of Medicine, Houston, TX, USA
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Alrifai N, Alhuneafat L, AlRobaidi K, Al Ghazawi SS, Thirumala PD. Perioperative Stroke and Thirty-Day Hospital Readmission After Cardiac Surgeries: State Inpatient Database Study. J Clin Med Res 2022; 14:34-44. [PMID: 35211215 PMCID: PMC8827220 DOI: 10.14740/jocmr4647] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 12/23/2021] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Readmission rates are an important metric for evaluating healthcare quality. Stroke is a major complication following cardiac surgery. Our study aimed to evaluate the frequency and predictors of 30-day unplanned hospital readmission after cardiac surgeries and to evaluate the impact of perioperative stroke on readmission. METHODS Surgical discharge records spanning the years of 2008 through 2011 were analyzed utilizing California State Inpatient Database. International Classification of Diseases, ninth revision-Clinical Modification (ICD-9-CM) codes and Clinical Classification Software (CCS) codes were used to identify surgeries and variables of interest. Surgical records were then followed up for 30 days through linking admission records. Perioperative stroke was defined as brain infarction of ischemic or hemorrhagic etiology that occurred during or within 30 days after surgery. RESULTS Baseline characteristics associated with increased readmission rates were female gender, age above 65, non-white race, lower income, and increased number of comorbidities. Among 199,617 hospitalizations for cardiac surgeries, 1,817 (0.91%) patients developed perioperative stroke. The rate of readmission in perioperative stroke patients was 21.89%. They had a longer length of hospital stay and their discharge was vastly non-routine (84%). Our univariate analysis yielded significant association between stroke and readmission rates (odds ratio: 1.82, 95% confidence interval: 1.63 - 2.04). This association failed to remain significant upon controlling for other variables in our multivariate analysis. CONCLUSION Baseline patient characteristics and perioperative complications are significant predictors of readmission. More than one in five patients who develop a stroke after cardiac surgery are readmitted to the hospital within 30 days of discharge.
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Affiliation(s)
- Nada Alrifai
- Department of Internal Medicine, Allegheny Health Network, Pittsburgh, PA, USA,These authors contributed equally to this article
| | - Laith Alhuneafat
- Department of Internal Medicine, Allegheny Health Network, Pittsburgh, PA, USA,These authors contributed equally to this article
| | - Khaled AlRobaidi
- Department of Neurology, University of Alabama, Birmingham, AL, USA
| | | | - Parthasarathy D. Thirumala
- Department of Neurological Surgery, University of Pittsburgh, Pittsburgh, PA, USA,Corresponding Author: Parthasarathy D. Thirumala, Department of Neurological Surgery, UPMC Presbyterian Hospital, Pittsburgh, PA 15213, USA.
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3
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Shawon MSR, Odutola M, Falster MO, Jorm LR. Patient and hospital factors associated with 30-day readmissions after coronary artery bypass graft (CABG) surgery: a systematic review and meta-analysis. J Cardiothorac Surg 2021; 16:172. [PMID: 34112216 PMCID: PMC8194115 DOI: 10.1186/s13019-021-01556-1] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 05/30/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Readmission after coronary artery bypass graft (CABG) surgery is associated with adverse outcomes and significant healthcare costs, and 30-day readmission rate is considered as a key indicator of the quality of care. This study aims to: quantify rates of readmission within 30 days of CABG surgery; explore the causes of readmissions; and investigate how patient- and hospital-level factors influence readmission. METHODS We conducted systematic searches (until June 2020) of PubMed and Embase databases to retrieve observational studies that investigated readmission after CABG. Random effect meta-analysis was used to estimate rates and predictors of 30-day post-CABG readmission. RESULTS In total, 53 studies meeting inclusion criteria were identified, including 8,937,457 CABG patients. The pooled 30-day readmission rate was 12.9% (95% CI: 11.3-14.4%). The most frequently reported underlying causes of 30-day readmissions were infection and sepsis (range: 6.9-28.6%), cardiac arrythmia (4.5-26.7%), congestive heart failure (5.8-15.7%), respiratory complications (1-20%) and pleural effusion (0.4-22.5%). Individual factors including age (OR per 10-year increase 1.12 [95% CI: 1.04-1.20]), female sex (OR 1.29 [1.25-1.34]), non-White race (OR 1.15 [1.10-1.21]), not having private insurance (OR 1.39 [1.27-1.51]) and various comorbidities were strongly associated with 30-day readmission rates, whereas associations with hospital factors including hospital CABG volume, surgeon CABG volume, hospital size, hospital quality and teaching status were inconsistent. CONCLUSIONS Nearly 1 in 8 CABG patients are readmitted within 30 days and the majority of these are readmitted for noncardiac causes. Readmission rates are strongly influenced by patients' demographic and clinical characteristics, but not by broadly defined hospital characteristics.
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Affiliation(s)
- Md Shajedur Rahman Shawon
- Centre for Big Data Research in Health, University of New South Wales (UNSW) Sydney, Kensington, Australia.
| | - Michael Odutola
- Centre for Big Data Research in Health, University of New South Wales (UNSW) Sydney, Kensington, Australia
| | - Michael O Falster
- Centre for Big Data Research in Health, University of New South Wales (UNSW) Sydney, Kensington, Australia
| | - Louisa R Jorm
- Centre for Big Data Research in Health, University of New South Wales (UNSW) Sydney, Kensington, Australia
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Preoperative right ventricular dysfunction requires high vasoactive and inotropic support during off-pump coronary artery bypass grafting. Gen Thorac Cardiovasc Surg 2021; 69:934-942. [PMID: 33389573 PMCID: PMC7778867 DOI: 10.1007/s11748-020-01557-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 11/16/2020] [Indexed: 11/07/2022]
Abstract
Objectives The association of preoperative RV function with hemodynamics during OPCAB or emergency conversion is not clear. The aim of this study was to investigate the association of vasoactive-inotropic score with tricuspid annular plane systolic excursion and tricuspid regurgitation in off-pump coronary artery bypass grafting, and to calculate the optimal cut-off value of tricuspid annular plane systolic excursion to predict emergency conversion to cardiopulmonary bypass. Methods Patients over 20 years of age who had undergone off-pump coronary artery bypass grafting between April 2015 and March 2020 were enrolled in this study. We retrospectively assessed the association of intraoperative maximum “vasoactive-inotropic score”, a weighted sum of various inotropes and vasoconstrictors, with tricuspid annular plane systolic excursion and tricuspid regurgitation. A receiver operating characteristic curve of conversion on tricuspid annular plane systolic excursion was also constructed. Results 135 patients were included in final analysis. Conversion was performed in 10 cases. Multiple regression analysis showed that tricuspid annular plane systolic excursion, mild or more tricuspid regurgitation and experienced surgeon were significantly related to vasoactive-inotropic score. The receiver operating characteristic curve to predict conversion by tricuspid annular plane systolic excursion showed an optimal cut-off value of 15.0 mm and area under the curve of 0.808. Conclusions Tricuspid annular plane systolic excursion and tricuspid regurgitation were associated with vasoactive-inotropic score in off-pump coronary artery bypass grafting. The optimal cut-off value of tricuspid annular plane systolic excursion to predict emergency conversion was 15 mm.
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Ueki C, Yamamoto H, Motomura N, Miyata H, Sakata R, Tsuneyoshi H. Effect of Hospital and Surgeon Procedure Volumes on the Incidence of Intraoperative Conversion During Off-Pump Coronary Artery Bypass Grafting. Semin Thorac Cardiovasc Surg 2020; 33:49-58. [PMID: 33242613 DOI: 10.1053/j.semtcvs.2020.08.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/20/2020] [Indexed: 11/11/2022]
Abstract
Intraoperative conversion to cardiopulmonary bypass with its subsequent high mortality is a major concern associated with off-pump coronary artery bypass grafting (OPCAB). The impact of procedure volume on the incidence of intraoperative conversion, however, is poorly defined. This study therefore evaluated the effect of procedure volume on the incidence of conversion in OPCAB using nationwide data. We analyzed 31,361 patients who underwent primary, nonemergent, isolated OPCAB during 2013-2016 reported in the Japan Cardiovascular Surgery Database. Hospitals (n = 548) and surgeons (n = 1315) were divided into tertile categories (low-, medium-, and high volumes) based on the total number of isolated coronary artery bypass grafting (CABG). Hierarchical logistic regression analysis, including 22 preoperative factors and hospital and surgeon CABG volumes, was used to assess the relation between procedure volume and the risk of conversion due to bleeding/hemodynamic instability. There were 797 (2.5%) intraoperative conversions due to bleeding/hemodynamic instability. Risk-adjusted odds ratios for conversion were significantly lower in some combined hospital/surgeon CABG volume categories than in the reference category. Hospital/surgeon volumes and their odds ratio (95% confidence interval) were as follows: low/low 1.00 (reference); medium/low 0.62 (0.39-0.96); high/low 0.47 (0.27-0.81); high/high 0.58 (0.38-0.89). There was a lower risk of conversion in medium- and high-volume than low-volume hospitals, especially among low-volume surgeons. Procedure volume is associated with the incidence of conversion during OPCAB. Among low-volume surgeons, hospital CABG volume significantly reduces conversion in a volume-dependent manner. These findings will be useful for safety training of OPCAB surgeons.
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Affiliation(s)
- Chikara Ueki
- Department of Cardiovascular Surgery, Shizuoka General Hospital, Shizuoka, Japan; Japan Cardiovascular Surgery Database, Tokyo, Japan.
| | | | | | | | - Ryuzo Sakata
- Japan Cardiovascular Surgery Database, Tokyo, Japan
| | - Hiroshi Tsuneyoshi
- Department of Cardiovascular Surgery, Shizuoka General Hospital, Shizuoka, Japan; Japan Cardiovascular Surgery Database, Tokyo, Japan
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Tariq K, Zia K, Mangi A, Amanullah M, Chaudry PA, Karim M. Conversion from Off to On-Pump Coronary Artery Bypass Grafting. Is it Avoidable? Cureus 2020; 12:e6791. [PMID: 32140350 PMCID: PMC7046009 DOI: 10.7759/cureus.6791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Background With the emergence of new technologies to stabilize the heart off-pump coronary artery bypass grafting (OPCAB), there is an increasing trend that is being observed throughout the world. In certain circumstances, OPCAB needs to be converted to on-pump CABG (ONCAB). In this study, we aim to identify certain risk factors mandating conversions and their associated short-term outcomes. Methods After approval from the institutional ethical review committee and exemption from informed consent, retrospective data of 100 patients meeting the inclusion criteria who underwent OPCAB operations at our institution from August 2018 to July 2019 were included. Preoperative, intraoperative, and postoperative variables were recorded and compared in conversion and non-conversion groups. This study was conducted at the National Institute of Cardiovascular Diseases, Karachi, Pakistan. Results A total of 100 patients were included in this study, out of which 82% (82) were male, with age ranging between 18 and 77 years with a mean age of 56.34 ± 8.3 years. In nine of the cases, OPCAB was emergently converted to ONCAB due to arrhythmias. In nine (9%) cases, off-pump CABG was emergently converted to on-pump CABG (ONCAB). Emergent conversion was due to arrhythmias in five cases, due to hypotension during OM graft in two cases, and due to hypotension during ramus graft for the remaining two cases. The emergent conversion was significantly associated with higher New York Heart Association (NYHA) functional classification and comorbid conditions such as chronic obstructive pulmonary disease (COPD). Conclusion Emergency conversion from off-pump to OPCAB is the most catastrophic event causing higher morbidity and mortality. Conversion rate was observed to be 9% with arrhythmias being the common cause and patients with higher NYHA status and COPD at baseline were found to be at increased risk of emergency conversion. Considering our results in patients with diagnosed COPD and higher NYHA status, the decision for off-pump CABG should be wisely taken carefully weighing the risks and benefits.
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Affiliation(s)
- Khuzaima Tariq
- Cardiac Surgery, National Institute of Cardiovascular Diseases, Karachi, PAK
| | - Kashif Zia
- Cardiac Surgery, National Institute of Cardiovascular Diseases, Karachi, PAK
| | - Ali Mangi
- Cardiac Surgery, National Institute of Cardiovascular Diseases, Karachi, PAK
| | - Muneer Amanullah
- Pediatric Cardiac Surgery, National Institute of Cardiovascular Disease, Karachi, PAK
| | - Pervaiz A Chaudry
- Cardiac Surgery, National Institute of Cardiovascular Diseases, Karachi, PAK
| | - Musa Karim
- Statistician, National Institute of Cardiovascular Diseases, Karachi, PAK
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Farina P, Gaudino M, Angelini GD. Off-pump coronary artery bypass surgery: The long and winding road. Int J Cardiol 2019; 279:51-55. [DOI: 10.1016/j.ijcard.2018.09.101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 09/23/2018] [Accepted: 09/25/2018] [Indexed: 11/27/2022]
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Angelini GD. An old off-pump coronary artery bypass surgeon's reflections: A retrospective. J Thorac Cardiovasc Surg 2018; 157:2274-2277. [PMID: 30396736 DOI: 10.1016/j.jtcvs.2018.09.086] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 09/11/2018] [Accepted: 09/25/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Gianni D Angelini
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Bristol, United Kingdom.
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9
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Gaudino M, Angelini GD, Antoniades C, Bakaeen F, Benedetto U, Calafiore AM, Di Franco A, Di Mauro M, Fremes SE, Girardi LN, Glineur D, Grau J, He G, Patrono C, Puskas JD, Ruel M, Schwann TA, Tam DY, Tatoulis J, Tranbaugh R, Vallely M, Zenati MA, Mack M, Taggart DP, Arterial Grafting International Consortium (ATLANTIC) Alliance. Off-Pump Coronary Artery Bypass Grafting: 30 Years of Debate. J Am Heart Assoc 2018; 7:e009934. [PMID: 30369328 PMCID: PMC6201399 DOI: 10.1161/jaha.118.009934] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Mario Gaudino
- Department of Cardio‐Thoracic SurgeryWeill Cornell MedicineNew York CityNY
| | | | | | | | | | | | - Antonino Di Franco
- Department of Cardio‐Thoracic SurgeryWeill Cornell MedicineNew York CityNY
| | | | - Stephen E. Fremes
- Schulich Heart CentreSunnybrook Health ScienceUniversity of TorontoCanada
| | - Leonard N. Girardi
- Department of Cardio‐Thoracic SurgeryWeill Cornell MedicineNew York CityNY
| | - David Glineur
- Division of Cardiac SurgeryOttawa Heart InstituteOttawaCanada
| | - Juan Grau
- Division of Cardiac SurgeryOttawa Heart InstituteOttawaCanada
| | - Guo‐Wei He
- TEDA International Cardiovascular HospitalChinese Academy of Medical Sciences & Peking Union Medical CollegeTianjinChina
| | - Carlo Patrono
- Department of PharmacologyCatholic University School of MedicineRomeItaly
| | - John D. Puskas
- Department of Cardiovascular SurgeryIcahn School of Medicine at Mount SinaiNew York CityNY
| | - Marc Ruel
- University of Ottawa Heart InstituteOttawaCanada
| | | | - Derrick Y. Tam
- Schulich Heart CentreSunnybrook Health ScienceUniversity of TorontoCanada
| | - James Tatoulis
- Department of SurgeryUniversity of MelbourneParkvilleAustralia
| | - Robert Tranbaugh
- Department of Cardio‐Thoracic SurgeryWeill Cornell MedicineNew York CityNY
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Stevens LM, Noiseux N, Avezum A, Ayapati DR, Chen X, Lucchese FA, Cacheda H, Parvathaneni S, Ou Y, Lamy A. Conversion after off-pump coronary artery bypass grafting: the CORONARY trial experience. Eur J Cardiothorac Surg 2017; 51:539-546. [PMID: 28082464 DOI: 10.1093/ejcts/ezw361] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Accepted: 10/10/2016] [Indexed: 11/12/2022] Open
Abstract
Objectives Emergent and late conversions form OFF-to-ON pump coronary artery bypass grafting (CABG) have been associated with worse outcomes, however, it remains unclear as to which risk factors are associated with conversion and how to prevent them. Methods Among 4718 patients who randomly underwent off- or on-pump CABG, the incidence of off-pump to on-pump cross-over, or 'OFF-to-ON conversion', was 7.9% (186/2356). The primary outcome was a composite of death, stroke, myocardial infarction, or new renal failure requiring dialysis. We assessed the risk factors and outcomes of converted patients. Results Emergent OFF-to-ON conversions, defined as conversions for hypotension or ischaemia, were required for 3.2% of patients ( n = 75), while most elective conversions were due to small or intramuscular coronaries ( n = 83). OFF-to-ON converted patients required increased surgery time, blood transfusions, intensive care unit stay, and presented a higher incidence at 1 year of the composite outcome compared with non-converted off-pump patients (all P < 0.01), especially if the conversion was emergent. Conversely, elective conversions outcomes were no different compared with non-converted off-pump patients ( P = 0.35). Independent predictors of emergent conversions included higher heart rate or chronic atrial fibrillation, urgent surgery, more grafts planned and surgeon experience with off-pump CABG. Conclusions Emergent OFF-to-ON conversion is associated with worse outcomes compared with elective conversion or no conversion. In the presence of risk factors for emergent conversion, an early and elective conversion approach is a judicious strategy.
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Affiliation(s)
- Louis-Mathieu Stevens
- Department of Surgery, Division of Cardiac Surgery, Centre Hospitalier de l'Université de Montréal and Research Center, Montreal, QC, Canada
| | - Nicolas Noiseux
- Department of Surgery, Division of Cardiac Surgery, Centre Hospitalier de l'Université de Montréal and Research Center, Montreal, QC, Canada
| | - Alvaro Avezum
- Research Division, Dante Pazzanese Institute of Cardiology, São Paulo, Brazil
| | | | - Xin Chen
- Department of Cardiothoracic Surgery, Nanjing First Hospital, Nanjing, China
| | | | - Horacio Cacheda
- Department of Cardiothoracic Surgery, Institute of Cardiology of Corrientes, Corrientes, Argentina
| | - Sirish Parvathaneni
- Department of Cardiothoracic Surgery, Mercy Medical Research Institute, St-Louis, MO, United States
| | - Yongning Ou
- Department of Surgery, Division of Cardiac Surgery McMaster University and Population Health Research Institute, Hamilton, ON, Canada
| | - André Lamy
- Department of Surgery, Division of Cardiac Surgery McMaster University and Population Health Research Institute, Hamilton, ON, Canada
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Conversion From Off-Pump Coronary Artery Bypass Grafting to On-Pump Coronary Artery Bypass Grafting. Ann Thorac Surg 2017; 104:1267-1274. [DOI: 10.1016/j.athoracsur.2017.03.032] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 02/14/2017] [Accepted: 03/20/2017] [Indexed: 11/21/2022]
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Igarashi T, Iwai-Takano M, Wakamatsu H, Haruta M, Omata S, Yokoyama H. Assessment of deformation of the mitral valve complex during off-pump coronary artery bypass surgery using three-dimensional echocardiography in a porcine model. J Cardiol 2017; 71:93-100. [PMID: 28807552 DOI: 10.1016/j.jjcc.2017.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Revised: 05/21/2017] [Accepted: 06/19/2017] [Indexed: 11/19/2022]
Abstract
BACKGROUND This study aimed to assess the deformation of the mitral valve complex during the displacement of the beating heart by using three-dimensional echocardiography in a porcine off-pump coronary artery bypass grafting (OPCAB) model. METHODS In nine healthy swine, we positioned the beating heart as an OPCAB model, i.e. control, left anterior descending artery (LAD), right coronary artery (RCA), and left circumflex artery (LCX) positions. In each position, three-dimensional echocardiography was performed to assess the mitral valve complex with hemodynamic parameters. We analyzed the deformation of the mitral valve and the three-dimensional coordinates of the papillary muscles. RESULTS There was a significant increase in maximum tenting length and tenting volume (control 0.70±0.30, LAD 0.65±0.27, RCA 0.79±0.23, LCX 0.95±0.34cm3, p<0.05) in the LCX position compared with the other positions. The posterior papillary muscle (PPM) angle had a significant relationship with the tenting volume (r=-0.643, p<0.001). The PPM was displaced to the medial side in the LAD and LCX positions (p<0.01). CONCLUSIONS The prime cause of the deformation of the mitral leaflets is suggested to be the displacement of the PPM associated with the change in geometry of the left ventricle in a porcine model.
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Affiliation(s)
- Takashi Igarashi
- Department of Cardiovascular Surgery, Fukushima Medical University, Fukushima, Japan.
| | | | - Hiroki Wakamatsu
- Department of Cardiovascular Surgery, Fukushima Medical University, Fukushima, Japan
| | - Mineyuki Haruta
- Department of Electrical and Electronics Engineering, College of Engineering, Nihon University, Koriyama, Japan
| | - Sadao Omata
- Department of Electrical and Electronics Engineering, College of Engineering, Nihon University, Koriyama, Japan
| | - Hitoshi Yokoyama
- Department of Cardiovascular Surgery, Fukushima Medical University, Fukushima, Japan
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Lim J, Lee WY, Ra YJ, Jeong JH, Ko HH. Analysis of Risk Factors for Conversion from Off-Pump to On-Pump Coronary Artery Bypass Graft. THE KOREAN JOURNAL OF THORACIC AND CARDIOVASCULAR SURGERY 2017; 50:14-21. [PMID: 28180098 PMCID: PMC5295478 DOI: 10.5090/kjtcs.2017.50.1.14] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 08/04/2016] [Accepted: 08/12/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Off-pump coronary artery bypass (OPCAB) is performed worldwide, but significant risks are associated with conversion to on-pump surgery. Therefore, we evaluated the composite outcomes between an OPCAB group and a conversion group. METHODS From January 2008 to December 2012, 100 consecutive patients underwent OPCAB at Hallym University Sacred Heart Hospital, of whom 84 underwent OPCAB without adverse events (OPCAB group), and 16 were converted to on-pump surgery (conversion group). Early morbidity, early and long-term mortality, and major adverse cardiac and cerebrovascular events (MACCEs) were the primary and long-term composite endpoints. RESULTS The mean follow-up period was 55±26 months, with 93% of the patients completing follow-up. The composite outcomes in the OPCAB and conversion groups were as follows: early morbidity, 2.3% versus 12.5%; early mortality, 4.7% versus 0%; long-term mortality, 14.3% versus 25.0%; and MACCEs, 14.3% versus 18.8%, respectively. No composite endpoints showed statistically significant differences. Preoperative acute myocardial infarction (AMI) was identified as an independent risk factor for conversion (p=0.025). CONCLUSION The conversion group showed no statistically significant differences in early mortality and morbidity, MACCEs, or long-term mortality compared with the OPCAB group. The preoperative diagnosis of AMI was associated with an increased number of conversions to on-pump surgery.
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Affiliation(s)
- Junghyeon Lim
- Department of Thoracic and Cardiovascular Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine
| | - Won Yong Lee
- Department of Thoracic and Cardiovascular Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine
| | - Yong Joon Ra
- Department of Thoracic and Cardiovascular Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine
| | - Jae Han Jeong
- Department of Thoracic and Cardiovascular Surgery, Chosun University Hospital, Chosun University College of Medicine
| | - Ho Hyun Ko
- Department of Thoracic and Cardiovascular Surgery, Hallym University Sacred Heart Hospital, Hallym University College of Medicine
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14
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Davierwala PM. Current outcomes of off-pump coronary artery bypass grafting: evidence from real world practice. J Thorac Dis 2016; 8:S772-S786. [PMID: 27942395 DOI: 10.21037/jtd.2016.10.102] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Coronary artery bypass grafting (CABG) can be performed conventionally using cardiopulmonary bypass (CPB) and aortic clamping or on a beating heart (BH) without the use of CPB, the so-called off-pump CABG. Some surgeons, who are proponents of off-pump CABG, preferentially use this technique for the majority of operations, whereas others use it only in certain situations which warrant avoidance of CPB. Ever since the conception of off-pump CABG, the never-ending debate about which technique of CABG is safe and efficacious continues to date. Several randomized controlled trials (RCTs) have been conducted that have either favored on-pump CABG or have failed to show a significant difference in outcomes between the two techniques. However, these RCTs have been fraught with claims that they do not represent the majority of patients undergoing CABG in real world practice. Therefore, assessment of the benefits and drawbacks of each technique through observational and registry studies would be more representative of patients encountered in daily practice. The present review examines various retrospective studies and meta-analyses of observational studies that compare the early and long-term outcomes of off- and on-pump CABG, which assesses their safety and efficacy. Additionally, their outcomes in older patients, females, and those with diabetes mellitus, renal dysfunction, presence of ascending aortic disease, and/or acute coronary syndrome (ACS) have also been discussed separately. The general consensus is that early results of off-pump CABG are comparable to or in some cases better than on-pump CABG. However, on-pump CABG provides a survival benefit in the long term according to a majority of publications in literature.
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Affiliation(s)
- Piroze M Davierwala
- Department of Cardiac Surgery, Heart Center, University of Leipzig, Leipzig, Germany
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Abstract
PURPOSE OF REVIEW This review will examine the current role of off-pump coronary artery bypass (OPCAB) surgery compared with on-pump coronary artery bypass (ONCAB) surgery for the revascularization of ischemic myocardium. RECENT FINDINGS Recent studies have confirmed earlier findings that OPCAB is associated with less grafts per patient and less complete revascularization, and increased incidence of recurrent angina and need for repeat revascularization procedures, and more frequent rehospitalization for cardiac-related issues. OPCAB does not prevent postoperative renal dysfunction and is associated with worse long-term outcomes. Hospital costs are not reduced and are increased in those OPCAB patients who require intraoperative conversion to ONCAB procedures; however, when multiple arterial grafts are used and a complete revascularization is performed, OPCAB outcomes are equivalent to those of ONCAB procedures. SUMMARY OPCAB should only be performed by surgeons experienced in this technique in patients in whom a complete revascularization can be achieved; preferably with multiple arterial grafts.
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Yang F, Wang J, Hou D, Xing J, Liu F, Xing ZC, Jiang C, Hao X, Du Z, Yang X, Zhao Y, Miao N, Jiang Y, Dong R, Gu C, Sun L, Wang H, Hou X. Preoperative intra-aortic balloon pump improves the clinical outcomes of off-pump coronary artery bypass grafting in left ventricular dysfunction patients. Sci Rep 2016; 6:27645. [PMID: 27279591 PMCID: PMC4899707 DOI: 10.1038/srep27645] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Accepted: 05/19/2016] [Indexed: 11/09/2022] Open
Abstract
Severe left ventricular (LV) dysfunction patients undergoing off-pump coronary artery bypass grafting (OPCAB) are often associated with a higher mortality. The efficacy and safety of the preoperative prophylactic intra-aortic balloon pump (IABP) insertion is not well established. 416 consecutive patients with severe LV dysfunction (ejection fraction ≤35%) undergoing isolated OPCAB were enrolled in a retrospective observational study. 191 patients was enrolled in the IABP group; the remaining 225 patients was in control group. A total of 129 pairs of patients were propensity-score matched. No significant differences in demographic and preoperative risk factors were found between the two groups. The postoperative 30-day mortality occurred more frequently in the control group compared with the IABP group (8.5% vs. 1.6%, p = 0.02). There was a significant reduction of low cardiac output syndrome in the IABP group compared with the control group (14% vs. 6.2%, p = 0.04). Prolonged mechanical ventilation (≥48 h) occurred more frequently in the control group (34.9% vs. 20.9%, p = 0.02). IABP also decreased the postoperative length of stay. Preoperative IABP was associated with a lower 30-day mortality, suggesting that it is effective in patients with severe LV dysfunction undergoing OPCAB.
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Affiliation(s)
- Feng Yang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jinhong Wang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Dengbang Hou
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Jialin Xing
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Feng Liu
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhi Chen Xing
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Chunjing Jiang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xing Hao
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Zhongtao Du
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaofang Yang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Yanyan Zhao
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Na Miao
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Yu Jiang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Ran Dong
- Department of Cardiac Surgery, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Chengxiong Gu
- Department of Cardiac Surgery, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Lizhong Sun
- Department of Cardiac Surgery, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Hong Wang
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiaotong Hou
- Center for Cardiac Intensive Care, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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¿Hay todavía lugar para la cirugía coronaria sin circulación extracorpórea en el 2015? Solo de manera ocasional. CIRUGIA CARDIOVASCULAR 2016. [DOI: 10.1016/j.circv.2015.06.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Kuroda K, Kato TS, Kuwaki K, Kajimoto K, Lee SL, Yamamoto T, Amano A. Early Postoperative Outcome of Off-Pump Coronary Artery Bypass Grafting: A Report from the Highest-Volume Center in Japan. Ann Thorac Cardiovasc Surg 2015; 22:98-107. [PMID: 26597169 DOI: 10.5761/atcs.oa.15-00152] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Off-pump coronary artery bypass grafting (OPCAB) has evolved into a standard technique in coronary artery bypass grafting. However, a detailed investigation in Japanese population undergoing OPCAB has not yet been fully elucidated. METHODS A total of 1109 consecutive patients undergoing isolated OPCAB between 2006 and 2013 at Juntendo University were reviewed. The data was evaluated in the light of previously published OPCAB-associated reports. RESULTS There were 904 male (81.5%) and a mean was 67.5 ± 9.8 years. Eight patients (0.5%) died within 30 days postoperatively or before discharge, which was equivalent to or rather better than the previously reported mortality rates, including the European System for Cardiac Operation Risk Evaluation II (2.1 ± 2.1) data. A morbidity analysis revealed that prolonged intubation (>24 h) occurred in 43 patients (3.6%), surgical site infections in 18 (1.9%), neurological complications in 13 (1.3%). A reduced preoperative left ventricular ejection fraction (less than 40%) was found to be a risk factor for early postoperative death (odds ratio 10.58, respectively, p <0.05) in our cohort. CONCLUSIONS Early postoperative mortality and morbidity rates in Japanese population after OPCAB were rather satisfactory and similar to those reported by other countries.
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Affiliation(s)
- Kishio Kuroda
- Department of Cardiovascular Surgery, Juntendo University School of Medicine, Tokyo, Japan
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Deppe AC, Arbash W, Kuhn EW, Slottosch I, Scherner M, Liakopoulos OJ, Choi YH, Wahlers T. Current evidence of coronary artery bypass grafting off-pump versus on-pump: a systematic review with meta-analysis of over 16 900 patients investigated in randomized controlled trials. Eur J Cardiothorac Surg 2015; 49:1031-41; discussion 1041. [DOI: 10.1093/ejcts/ezv268] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2014] [Accepted: 07/02/2015] [Indexed: 01/27/2023] Open
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