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Azari A, Baradaran Rahimi V, Moravvej Z, Rahsepar AA, Ghayour-Mobarhan M, Salehi M, Bigdelu L. Antioxidant activity in off and on-pump coronary artery bypass grafting and valve replacement surgery. J Basic Clin Physiol Pharmacol 2023; 34:365-370. [PMID: 36804935 DOI: 10.1515/jbcpp-2022-0244] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2022] [Accepted: 01/23/2023] [Indexed: 02/22/2023]
Abstract
OBJECTIVES Cardiac surgeries initiate oxidative stress, increasing organ dysfunction development and mortality. The present study investigated the superoxide dismutase (SOD) activity, as an antioxidant enzyme, in patients undergoing coronary artery bypass (CABG) and heart valve replacement surgeries. METHODS A prospective study was performed on patients with proven coronary artery disease (CAD) or valvular heart disease (VHD) candidates for on- or off-pump CABG and valve replacement surgery. Serum SOD activity was measured preoperatively, at 24 h postoperatively, and at the time of discharge. In addition, echocardiography was performed before surgery and at discharge. RESULTS A total of 48, 51, and 47 patients were enrolled in the on-pump, off-pump CABG, and valve replacement groups, respectively. Baseline serum SOD activity showed no significant association with BMI, age, and blood pressure in either CAD or VHD patients. The SOD values decreased at the 24 h postoperative time and then increased at the time of discharge in all groups, except for a slight decrease in the on-pump group. The changes in serum SOD values were not significantly different for the three surgical groups. CONCLUSIONS The serum SOD activities fell significantly after CABG and valve replacement surgery. Further investigation is emphasized for the role of SOD in oxidative stress after cardiac surgery.
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Affiliation(s)
- Ali Azari
- Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Vafa Baradaran Rahimi
- Pharmacological Research Center of Medicinal Plants, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Zahra Moravvej
- Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Ophthalmology, Hakim Hospital, Neyshabur University of Medical Sciences, Neyshabur, Iran
| | - Amir Ali Rahsepar
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Majid Ghayour-Mobarhan
- International UNESCO Center for Health-Related Basic Sciences and Human Nutrition, Mashhad University of Medical Sciences, Mashhad, Iran.,Metabolic Syndrome Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Maryam Salehi
- Department of Community Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Leila Bigdelu
- Vascular and Endovascular Surgery Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.,Department of Cardiovascular Diseases, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
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Moravvej Z, Baradaran Rahimi V, Azari A, Rahsepar AA, Ghayour‐Mobarhan M, Salehi M, Bigdelu L. Changes in serum zinc and copper concentrations in patients with cardiovascular disease following cardiac surgery. Physiol Rep 2022; 10:e15483. [PMID: 36200328 PMCID: PMC9535343 DOI: 10.14814/phy2.15483] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 12/04/2022] Open
Abstract
The trace elements copper (Cu) and zinc (Zn) are essential for maintaining oxidative balance, and cardiac surgery is known to provoke an increase in oxidative stress. We investigated the variations in serum Zn and Cu concentrations before and after surgery in patients undergoing on- and off-pump CABG and heart valve replacement. We performed a prospective study on patients undergoing on- or off-pump CABG, or heart valve replacement surgery (48, 51, and 47 patients, respectively). Venous blood samples were obtained, and serum Cu and Zn concentrations were measured preoperatively, 24 h postoperatively, and the time of discharge. In addition, echocardiography was carried out on all patients before surgery and again on the day of discharge. We found the temporal changes in Cu, Zn, and Zn/Cu ratio were significantly different in all three groups of surgery (p < 0.05). In each group, Cu and Zn values and Zn/Cu ratio decreased at the 24-h postoperative time and rose at the discharge time. There were no significant differences between surgery groups in the changes induced in Zn or Cu values (p > 0.05). In conclusion, the concentrations of Cu and Zn were markedly reduced after on- and off-pump CABG and valve replacement surgery. This may suggest that supplementary Zn and Cu administration could be beneficial during open-heart surgeries. However, more long-term studies with more patients are needed to confirm this hypothesis.
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Affiliation(s)
- Zahra Moravvej
- Division of Cardiovascular, Vascular Surgery Research CenterMashhad University of Medical SciencesMashhadIran
- Department of Ophthalmology, Hakim HospitalNeyshabur University of Medical SciencesNeyshaburIran
| | - Vafa Baradaran Rahimi
- Department of Cardiovascular Diseases, Faculty of MedicineMashhad University of Medical SciencesMashhadIran
| | - Ali Azari
- Division of Cardiovascular, Vascular Surgery Research CenterMashhad University of Medical SciencesMashhadIran
| | - Amir Ali Rahsepar
- Division of Cardiology, Department of MedicineJohns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Majid Ghayour‐Mobarhan
- Metabolic Syndrome Research CenterMashhad University of Medical SciencesMashhadIran
- International UNESCO Center for Health‐Related Basic Sciences and Human NutritionMashhad University of Medical SciencesMashhadIran
| | - Maryam Salehi
- Department of Community MedicineSchool of Medicine, Mashhad University of Medical SciencesMashhadIran
| | - Leila Bigdelu
- Division of Cardiovascular, Vascular Surgery Research CenterMashhad University of Medical SciencesMashhadIran
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Associations of creatinine/cystatin C ratio and postoperative pulmonary complications in elderly patients undergoing off-pump coronary artery bypass surgery: a retrospective study. Sci Rep 2021; 11:16881. [PMID: 34413410 PMCID: PMC8376894 DOI: 10.1038/s41598-021-96442-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 08/10/2021] [Indexed: 11/23/2022] Open
Abstract
Sarcopenia along with nutritional status are associated with postoperative pulmonary complications in various surgical fields. Recently, the creatinine/cystatin C ratio and CONtrolling NUTritional status score were introduced as biochemical indicators for sarcopenia and malnutrition, respectively. We aimed to investigate the associations among these indicators and postoperative pulmonary complications in elderly patients undergoing off-pump coronary artery bypass surgery. We reviewed the medical records of 605 elderly patients (aged ≥ 65 years) who underwent off-pump coronary artery bypass surgery from January 2010 to December 2019. Postoperative pulmonary complications (pneumonia, prolonged ventilation [> 24 h], and reintubation during post-surgical hospitalisation) occurred in 80 patients. A 10-unit increase of creatinine/cystatin C ratio was associated with a reduced risk of postoperative pulmonary complications (odds ratio: 0.80, 95% confidence interval: 0.69–0.92, P = 0.001); the optimal cut-off values for predicting postoperative pulmonary complications was 89.5. Multivariable logistic regression analysis revealed that age, congestive heart failure, and creatinine/cystatin C ratio < 89.5 (odds ratio 2.36, 95% confidence interval 1.28–4.37) were independently associated with the occurrence of postoperative pulmonary complications, whereas CONtrolling NUTritional status score was not. A low creatinine/cystatin C ratio was associated with an increased risk of developing postoperative pulmonary complications after off-pump coronary artery bypass surgery.
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Retrospective evaluation of ultrafiltration during cardiac surgery with cardiopulmonary bypass in adult patients with increased neutrophil to lymphocyte ratio. JOURNAL OF SURGERY AND MEDICINE 2020. [DOI: 10.28982/josam.814941] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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Effects of Pre-Cardiopulmonary Bypass Administration of Dexmedetomidine on Cardiac Injuries and the Inflammatory Response in Valve Replacement Surgery With a Sevoflurane Postconditioning Protocol: A Pilot Study. J Cardiovasc Pharmacol 2020; 74:91-97. [PMID: 31356535 PMCID: PMC6688713 DOI: 10.1097/fjc.0000000000000698] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Supplemental Digital Content is Available in the Text. Background: Preventing myocardial ischemia–reperfusion injury in on-pump cardiac surgeries remains an enormous challenge. Sevoflurane postconditioning has been effective at overcoming this challenge by modulating inflammatory mediators and ameliorating antioxidative stress. Dexmedetomidine (DEX) is a commonly used medication for cardiac patients with organ-protective properties that lead to positive outcomes. Whether DEX also has cardiac-protective properties and the associated mechanism in sevoflurane postconditioning–based valve replacement surgeries are unknown. Objective: This study was conducted to observe the effect of DEX administration before cardiopulmonary bypass (CPB) on myocardial injury, oxidative stress, and inflammatory response indicators in the peripheral blood. Methods: Twenty-eight eligible cardiac patients who underwent valve replacement surgery with standard sevoflurane postconditioning were included in the study. The patients were randomly divided into a DEX group and a non-DEX group according to whether DEX (0.5-µg/kg overload dose for 10 minutes and a 0.5-μg/kg/h maintenance dose) or saline was administered from induction to the beginning of CPB. The primary outcome was the cardiac troponin I concentration (cTnI) in the blood 24 hours after CPB. The levels of malondialdehyde (MDA), superoxide dismutase, tumor necrosis factor-α (TNF-α), interleukin-6 (IL-6), and interleukin-8 (IL-8) were also measured. Results: The mean cTnI at 24 hours after CPB was clearly decreased in the DEX group compared with that in the non-DEX group (4.16 ± 1.58 vs. 6.90 ± 3.73, P < 0.05). TNF-α levels were lower in the DEX group after CPB (T1–T5), with a significant difference found at 1–6 hours after CPB (1 hour, 19.03 vs. 28.09; 6 hours, 20.74 vs. 30.94, P < 0.05). The IL-6 and IL-8 concentrations in the DEX group were dramatically increased at 6 hours after CPB (P < 0.05). The MDA content and superoxide dismutase activity were comparable between the 2 groups. A lower proportion of anemia cases were noted after CPB in the DEX group than in the non-DEX group (non-DEX, 10% vs. DEX, 5%, P < 0.05). Conclusions: In valve replacement surgery with sevoflurane postconditioning, pre-CPB administration of DEX can reduce the cTnI level at 24 hours after CPB and brings synergic benefits of the inflammatory response.
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Raja SG, Dreyfus GD. Will Off-Pump Coronary Artery Surgery Replace Conventional Coronary Artery Surgery? J R Soc Med 2017; 97:275-8. [PMID: 15173328 PMCID: PMC1079490 DOI: 10.1177/014107680409700605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- Shahzad G Raja
- Department of Cardiac Surgery, Alder Hey Hospital, Liverpool L12 2AP, UK.
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Djaiani GN. Aortic Arch Atheroma: Stroke Reduction in Cardiac Surgical Patients. Semin Cardiothorac Vasc Anesth 2016; 10:143-57. [PMID: 16959741 DOI: 10.1177/1089253206289006] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Cardiac surgery is increasingly performed on elderly patients with extensive coronary artery abnormalities who have impaired left ventricular function, decreased physiologic reserve, and multiple comorbid conditions. Considerable numbers of these patients develop perioperative neurologic complications ranging from subtle cognitive dysfunction to more evident postoperative confusion, delirium, and, less commonly, clinically apparent stroke. Magnetic resonance imaging studies have elucidated that a considerable number of patients have new ischemic brain infarcts, particularly after conventional coronary artery bypass graft surgery. Mechanisms of cerebral injury during and after cardiac surgery are discussed. Intraoperative transesophageal echocardiography and epiaortic scanning for detection of atheromatous disease of the proximal thoracic aorta is paramount in identifying patients at high risk from neurologic injury. It is important to recognize that our efforts to minimize neurologic injury should not be limited to the intraoperative period. Particular efforts should be directed to temperature management, glycemia control, and pharmacologic neuroprotection extending into the postoperative period. Preoperative magnetic resonance angiography may be of value for screening patients with significant atheroma of the proximal thoracic aorta. It is likely that for patients with no significant atheromatous disease, conventional coronary artery revascularization is the most effective long-term strategy, whereas patients with atheromatous thoracic aorta may be better managed with beating heart surgery, hybrid techniques, or medical therapy alone. Patient stratification based on the aortic atheromatic burden should be addressed in future trials designed to tailor treatment strategies to improve long-term outcomes of coronary heart disease and reduce the risks of perioperative neurologic injury.
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Affiliation(s)
- George N Djaiani
- Department of Anesthesia and Pain Management, Toronto General Hospital, University Health Network, University of Toronto, Toronto, Ontario, Canada.
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Abstract
The morbidity and mortality associated with conventional coronary artery bypass grafting (CABG) attributed to invasiveness of cardiopulmonary bypass (CPB) has been well documented. Recognition of this invasiveness with a focus centered on abolishing, or at least reducing the CPB associated morbidity and mortality led to the resurgence of off-pump coronary artery bypass (OPCAB) surgery nearly two decades ago. At about the same time, OPCAB was adopted at Harefield hospital partly as an institutional drive to promote innovation and partly as a strategy to improve outcomes. What was deemed as a challenging technique initially and practiced by a single surgeon has now become a valid substitute to conventional CABG for achieving complete myocardial revascularization. This strategy now accounts for more than 50% of all coronary artery surgery operations at Harefield hospital and is systematically used to treat all coronary anatomies; achieve complete revascularization by accessing all territories subtended by main coronary arteries; and accomplish equivalent quality grafts without restriction in vascular conduit usage. This review article provides an overview of the evolution of OPCAB surgery at an institution with a well-established OPCAB program confirming that as surgeons' experience matures, OPCAB surgery permits safe and effective total myocardial revascularization in virtually all patients with multivessel coronary artery disease.
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Affiliation(s)
- Shahzad G Raja
- Department of Cardiac Surgery, Harefield Hospital, London, UK
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9
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Abstract
Over the past two decades there has been a steady evolution in the practice of adult cardiac surgery with the introduction of “off-pump” surgery. However, respiratory complications remain a leading cause of postcardiac surgical morbidity and can prolong hospital stays and increase costs. The high incidence of pulmonary complications is in part due to the disruption of normal ventilatory function that is inherent to surgery in the thoracic region. Furthermore, patients undergoing such surgery often have underlying illnesses such as intrinsic lung disease (e.g., chronic obstructive pulmonary disease) and pulmonary dysfunction secondary to cardiac disease (e.g., congestive heart failure) that increase their susceptibility to postoperative respiratory problems. Given that many patients undergoing cardiac surgery are thus susceptiple to pulmonary complications, it is remarkable that more patients do not suffer from them during and after cardiac surgery. This is to a large degree because of advances in anesthetic, surgical and critical care that, for example, have reduced the physiological insults of surgery (e.g., better myocardial preservation techniques) and streamlined care in the immediate postoperative period (e.g., early extubation). Moreover, the development of minimally invasive surgery and nonbypass techniques are further evidence of the attempts at reducing the homeostatic disruptions of cardiac surgery. This review examines the available information on the incidences, consequences, and treatments of postcardiac surgery respiratory complications.
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Affiliation(s)
- Charles Weissman
- Department of Anesthesiology and Critical Care Medicine, Hadassah-Hebrew University School of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Tóth Z, Györimolnár I, Abrahám H, Hevesi A. Cannulation and Cardiopulmonary Bypass Produce Selective Brain Lesions in Pigs. Asian Cardiovasc Thorac Ann 2016; 14:273-8. [PMID: 16868098 DOI: 10.1177/021849230601400402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Whether cardiopulmonary bypass alone or together with manipulation of the aorta produces neurologic complications remains controversial. Using a pig model, the immediate effects of aortic cannulation and cardiopulmonary bypass on neural injury in different brain regions were investigated in 3 experimental groups: non-operated controls; operated controls with aortic cannulation without cardiopulmonary bypass; and operated animals undergoing cardiopulmonary bypass. Immunohistochemistry using a monoclonal antibody against calretinin was used to show possible ischemic damage in the hippocampal formation which is one of the most vulnerable regions to ischemia. Both cannulation of the aorta alone and cardiopulmonary bypass resulted in numerous argyrophilic neurons in discrete regions of the prefrontal and cerebellar cortex. Decreased calretinin immunoreaction and a reduced number of calretinin-positive neurons were observed following aortic cannulation or cardiopulmonary bypass compared to the non-operated controls. This suggests that both cannulation of the aorta alone and cardiopulmonary bypass affect a selected population of neurons. Therefore, off-pump, aorta no-touch technique may prevent neurologic complications.
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Affiliation(s)
- Zsolt Tóth
- Division of Cardiac Surgery, Heart Institute, Faculty of Medicine, University of Pécs, 7624 Pécs, Ifjuság út 13, Hungary.
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Off-pump coronary artery bypass grafting versus optimal medical therapy alone: effectiveness of incomplete revascularization in high risk patients. JOURNAL OF GERIATRIC CARDIOLOGY : JGC 2016; 13:23-30. [PMID: 26918009 PMCID: PMC4753008 DOI: 10.11909/j.issn.1671-5411.2016.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Background Geriatric patients with multivessel coronary artery disease (CAD) are a challenging group to treat; these cases elicit discussion within heart teams regarding the actual benefit of undertaking major surgery on these patients and often lead to abandon the surgical option. Percutaneous procedures represent an important option, but coronary anatomy may be unfavorable. Off-pump coronary artery bypass (OPCAB) provides good quality graft on left anterior descending (LAD) without exposing the patient to cardiopulmonary bypass, and might be the ideal choice in patients with multiple comorbidities, not eligible to percutaneous or on-pump procedures. The objective of this study was to compare survival during a mid-term follow-up in high-risk patients with no percutaneous alternative, either treated with OPCAB or discharged in medical therapy. Methods We retrospectively evaluated from June 2008 to June 2013, 83 high-risk patients with multivessel CAD were included: 42 were treated with incomplete off-pump revascularization using left internal mammary artery (LIMA) on LAD; 41 were discharged in optimal medical therapy (OMT), having refused surgery. Follow-up ended in March 2015, with a telephonic interview. Primary endpoint was survival from all-cause mortality; secondary endpoints were survival from cardiac-related mortality and freedom from non-fatal major adverse cardiac events (MACEs). Results During follow up, 11 deaths in OPCAB group and 27 deaths in OMT group occurred. Death was due to cardiac factors in 6 and 15 patients, respectively. MACEs were observed in 6 patients in OPCAB group and in 4 patients in OMT group. With regards to survival from all-cause mortality, patients who underwent OPCAB survived more than those discharged in OMT (Log Rank < 0.001), and OMT group carries a propensity score-adjusted hazard ratio of 3.862 (P < 0.001). With regards to survival from cardiac-related events, patients who underwent OPCAB survived more than those discharged in OMT (Log Rank = 0.002), and OMT group carries a propensity score-adjusted hazard ratio of 3.663 (P = 0.010). There is no statistically significant difference concerning freedom from MACEs (Log Rank = 0.273). Conclusions For high-risk patients with multivessel CAD, not eligible to on-pump complete revascularization surgery or percutaneous procedures, incomplete revascularization with OPCAB LIMA-on-LAD offers benefits in survival when compared to OMT alone.
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Lemoine S, Tritapepe L, Hanouz JL, Puddu PE. The mechanisms of cardio-protective effects of desflurane and sevoflurane at the time of reperfusion: anaesthetic post-conditioning potentially translatable to humans? Br J Anaesth 2016; 116:456-75. [PMID: 26794826 DOI: 10.1093/bja/aev451] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Myocardial conditioning is actually an essential strategy in the management of ischaemia-reperfusion injury. The concept of anaesthetic post-conditioning is intriguing, its action occurring at a pivotal moment (that of reperfusion when ischaemia reperfusion lesions are initiated) where the activation of these cardio-protective mechanisms could overpower the mechanisms leading to ischaemia reperfusion injuries. Desflurane and sevoflurane are volatile anaesthetics frequently used during cardiac surgery. This review focuses on the efficacy of desflurane and sevoflurane administered during early reperfusion as a potential cardio-protective strategy. In the context of experimental studies in animal models and in human atrial tissues in vitro, the mechanisms underlying the cardio-protective effect of these agents and their capacity to induce post-conditioning have been reviewed in detail, underlining the role of reactive oxygen species generation, the activation of the cellular signalling pathways, and the actions on mitochondria along with the translatable actions in humans; this might well be sufficient to set the basis for launching randomized clinical studies, actually needed to confirm this strategy as one of real impact.
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Affiliation(s)
- S Lemoine
- Department of Anaesthesiology and Intensive Care, France and Faculty of Medicine, Centre Hospitalier Universitaire de Caen, Normandie Université, Pôle d'Anesthésie-Réanimation Chirurgicale - Niveau 6, CHU de Caen, Avenue Cote de Nacre, Caen Cedex 14033, France
| | - L Tritapepe
- Department of Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - J L Hanouz
- Department of Anaesthesiology and Intensive Care, France and Faculty of Medicine, Centre Hospitalier Universitaire de Caen, Normandie Université, Pôle d'Anesthésie-Réanimation Chirurgicale - Niveau 6, CHU de Caen, Avenue Cote de Nacre, Caen Cedex 14033, France
| | - P E Puddu
- Department of Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
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Aldemir M, Baki ED, Adali F, Çarşanba G, Tecer E, Taş HU. Comparison of neutrophil:lymphocyte ratios following coronary artery bypass surgery with or without cardiopulmonary bypass. Cardiovasc J Afr 2015; 26:159-64. [PMID: 25903477 PMCID: PMC4683287 DOI: 10.5830/cvja-2015-015] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Accepted: 01/27/2015] [Indexed: 12/26/2022] Open
Abstract
Objective Coronary artery bypass graft (CABG) surgery may induce postoperative systemic changes in leukocyte counts, including leukocytosis, neutrophilia or lymphopenia. This retrospective clinical study investigated whether offpump coronary artery bypass (OPCAB) surgery working on the beating heart without extracorporeal circulation could favourably affect leukocyte counts, including neutrophil-tolymphocyte (N:L) ratio, after CABG. Methods In this study, 30 patients who underwent isolated CABG with cardiopulmonary bypass (CPB), and another 30 patients who underwent the same operation without CPB between May 2010 and May 2013, were screened from the computerised database of our hospital. Pre-operative, and first and fifth postoperative day differential counts of leukocytes with the N:L ratio of peripheral blood were obtained. Results A significant increase in total leukocyte and neutrophil counts and N:L ratio, and a decrease in lymphocyte counts were observed at all time points after surgery in both groups. N:L ratio was significantly higher in the CPB group compared with the OPCAB group on the first postoperative day (20.73 ± 13.85 vs 10.19 ± 4.55, p < 0.001), but this difference disappeared on the fifth postoperative day. Conclusion CPB results in transient but significant changes in leukocyte counts in the peripheral blood stream in terms of N:L ratio compared with the off-pump technique of CABG.
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Affiliation(s)
- Mustafa Aldemir
- Department of Cardiovascular Surgery, Faculty of Medicine, Afyon Kocatepe University, Turkey
| | - Elif Doğan Baki
- Department of Anaesthesiology, Faculty of Medicine, Afyon Kocatepe University, Turkey
| | - Fahri Adali
- Department of Cardiovascular Surgery, Faculty of Medicine, Afyon Kocatepe University, Turkey
| | - Görkem Çarşanba
- Department of Cardiovascular Surgery, Faculty of Medicine, Afyon Kocatepe University, Turkey
| | - Evren Tecer
- Department of Cardiovascular Surgery, Faculty of Medicine, Afyon Kocatepe University, Turkey
| | - Hanife Uzel Taş
- Department of Public Health, Faculty of Medicine, Afyon Kocatepe University, Turkey
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Shah B, Sharma P, Brahmbhatt A, Shah R, Rathod B, Shastri N, Patel J, Malhotra A. Study of levosimendan during off-pump coronary artery bypass grafting in patients with LV dysfunction: a double-blind randomized study. Indian J Pharmacol 2014; 46:29-34. [PMID: 24550581 PMCID: PMC3912803 DOI: 10.4103/0253-7613.125161] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 08/05/2013] [Accepted: 10/06/2013] [Indexed: 12/03/2022] Open
Abstract
Objectives: Levosimendan is a calcium sensitizer drug which has been used in cardiac surgery for the prevention of postoperative low cardiac output syndrome (LCOS) and in difficult weaning from cardiopulmonary bypass (CPB). This study aims to evaluate perioperative hemodynamic effects of levosimendan pretreatment in patients for off-pump coronary artery bypass graft (OPCABG) surgery with low left ventricular ejection fractions (LVEF < 30%). Materials and Methods: Fifty patients undergoing OPCABG surgery with low LVEF (<30%) were enrolled in the study. Patients were randomly divided in two groups: Levosimendan pretreatment (Group L) and placebo pretreatment (Group C) of 25 each. Group L, patients received levosimendan infusion 200 μg/kg over 24 h and in Group C Patients received placebo. The clinical parameters measured before and after the drug administration up to 48 h were heart rate (HR; for the hour after drug infusion), cardiac index (CI), and pulmonary capillary wedge pressure (PCWP). The requirement of inotropes, intraaortic balloon pump (IABP), CPB, intensive care unit (ICU) stay, and hospital stay were also measured. Results: The patients in group L exhibited higher CI and PCWP during operative in early postoperative period as compared to control group C. Group L also had a less requirement for inotropes, CPB support and IABP with shorter ICU stay as well as hospital stay. Conclusion: Levosimendan pretreatment (24 h infusion) in patient for OPCABG with poor LVEF shows better outcomes and hemodynamics in terms of inotropes, CPB and IABP requirements. It also reduces ICU stay.
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Affiliation(s)
- B Shah
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - P Sharma
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - A Brahmbhatt
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - R Shah
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - B Rathod
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - Naman Shastri
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - J Patel
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
| | - A Malhotra
- Chief Cardiac Anesthesiologist, SAL Hospital, Ahmadabad, Gujarat, India
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Davoodi S, Karimi A, Ahmadi SH, Marzban M, Movahhedi N, Abbasi K, Omran AS, Shirzad M, Sheikhvatan M, Abbasi SH, Bina P. Early outcome of off-pump versus on-pump coronary revascularization. Pan Afr Med J 2014; 17:309. [PMID: 25328605 PMCID: PMC4198433 DOI: 10.11604/pamj.2014.17.309.1723] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2012] [Accepted: 03/10/2013] [Indexed: 11/26/2022] Open
Abstract
Introduction The use of coronary artery bypass surgery (CABG) with cardiopulmonary bypass (CPB) or without CPB technique (off-pump) can be associated with different mortality and morbidity and their outcomes remain uncertain. The goal of this study was to evaluate the early outcome of on-pump versus off-pump CABG. Methods We conducted a retrospective database review of 13866 patients (13560 patients undergoing on-pump CABG and 306 patients undergoing off-pump CABG) at Tehran Heart Center between January 2002 and January 2007. We compared preoperative, operative, and postoperative characteristics between them. Results In-hospital mortality in the on-pump group was 0.8% compared to 0.7% in the off-pump group (P=0.999) and in-hospital morbidity was 11.7% and 6.5%, respectively (OR: 1.533, 95%CI: 0.902-2.605, P=0.114). Postoperative atrial fibrillation was more prevalent in on-pump versus off-pump surgery (6.0% vs 3.0%, P=0.028), however there were no statistical significant differences in other postoperative complications with regard to cardiac arrest (P=0.733), prolonged ventilation (P=0.363), brain stroke (P=0.999), renal failure (P=0.525), and postoperative bleeding (P=0.999). The mean length of stay in hospital (P=0.156) and in ICU (P=0.498) was also similar between the two groups. Conclusion The results from an Iranian population-based study showed similar early mortality and morbidity of off-pump CABG in comparison to on-pump surgery.
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Affiliation(s)
- Saeed Davoodi
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbasali Karimi
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mehrab Marzban
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Namvar Movahhedi
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Kyomars Abbasi
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Abbas Salehi Omran
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahmood Shirzad
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
| | | | | | - Payvand Bina
- Tehran Heart Center, Tehran University of Medical Sciences, Tehran, Iran
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Nishimi M, Tashiro T. Off-pump coronary artery bypass vs percutaneous coronary intervention. Therapeutic strategies for 3-vessel coronary artery disease: OPCAB vs PCI(PCI-Side). Circ J 2010; 74:2750-7. [PMID: 21084755 DOI: 10.1253/circj.cj-10-1023] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Coronary artery bypass graft (CABG) surgery is still the best therapy for patients with multivessel and left main coronary artery disease. Recently, the introduction of percutaneous coronary intervention (PCI) with drug-eluting stents (DES) in these patients has improved the restenosis rate compared with bare metal stents. Furthermore, according to the results of the SYNTAX trial, no differences were found in the frequencies of mortality or myocardial infarction between CABG and PCI patients. PCI with DES is being increasingly performed for the treatment of patients with either left main trunk, diffuse, or multivessel lesions. In Japan, to avoid any side effects from cardiopulmonary bypass, off-pump coronary artery bypass (OPCAB) was performed in 66% of the total isolated CABG procedures in 2009, and is markedly different from the procedures performed in North America and Europe. However, the comparative effectiveness of PCI and OPCAB remains uncertain. In the present study, the current evidence from randomized trials, a meta-analysis and several observation studies are reviewed.
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Affiliation(s)
- Masaru Nishimi
- Department of Cardiovascular Surgery, Fukuoka University School of Medicine, Fukuoka, Japan.
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Adler Ma SC, Brindle W, Burton G, Gallacher S, Hong FC, Manelius I, Smith A, Ho W, Alston RP, Bhattacharya K. Tranexamic acid is associated with less blood transfusion in off-pump coronary artery bypass graft surgery: a systematic review and meta-analysis. J Cardiothorac Vasc Anesth 2010; 25:26-35. [PMID: 21115366 DOI: 10.1053/j.jvca.2010.08.012] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2010] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Tranexamic acid reduces blood loss and transfusion in on-pump coronary artery bypass graft (CABG) surgery. Compared with on-pump, off-pump surgery is associated with less blood loss and transfusion. Therefore, tranexamic acid may be less effective for off-pump surgery, and its safety profile may be different in this setting. The aim of this study was to determine the efficacy and safety of tranexamic acid for off-pump CABG surgery. DESIGN Systematic review and meta-analysis. SETTING University of Edinburgh. INTERVENTIONS The administration of tranexamic acid. METHODS A systematic review of randomized controlled trials administering tranexamic acid to patients undergoing off-pump CABG surgery. A meta-analysis of 24-hour blood loss, postoperative allogeneic transfusion, and thromboembolic events. MEASUREMENTS AND MAIN RESULTS Eight trials were identified. The lack of appropriate data limited the meta-analysis on blood loss. Tranexamic acid significantly reduced the overall risk of allogeneic blood component transfusion (risk ratio = 0.47; 95% confidence intervals, 0.33-0.66; p < 0.0001) and packed red blood cell transfusions (risk ratio = 0.51; 95% CI, 0.36-0.71; p = 0.0001). No association was found between tranexamic acid and myocardial infarction, stroke, or pulmonary embolism. Population sizes of meta-analyses ranged from 466 to 544. CONCLUSIONS Tranexamic acid reduces blood transfusion after off-pump surgery. Although no association with adverse events was found, the population sample size was too small to detect rare but clinically significant adverse events. A well-designed randomized controlled trial with an appropriate sample size is required to confirm tranexamic acid effectiveness and safety in off-pump CABG surgery.
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Affiliation(s)
- S C Adler Ma
- University of Edinburgh, College of Medicine and Veterinary Medicine, Edinburgh, United Kingdom.
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Benetti FJ. MINI-off-pump coronary artery bypass graft: long-term results. Future Cardiol 2010; 6:791-5. [DOI: 10.2217/fca.10.96] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In an effort to decrease the risks and costs associated with coronary artery bypass graft, in 1978 we repopularized off-pump coronary artery bypass graft (OPCABG) and expanded the technique, addressing lesions of the circumflex system and applying it to diverse clinical scenarios. In this article we describe our experience with 40 patients who received coronary revascularization through a MINI-OPCABG (Benetti technique) operation. Follow-up was achieved by direct communication with the patients or their family during 144 months. The interviews investigated survival, symptoms, long-term medical management and the need for reintervention. This group of patients had no operative mortality and 18 patients (45%) were extubated in the operating room. One patient (2.5%) experienced a perioperative myocardial infarction. During follow-up, two patients received percutaneous coronary intervention, one in the right coronary artery, the other in the circumflex system. A total of seven patients (17.5%) died. Overall, cumulative patient survival at 144 months was 82.5% (33 cases). Of the seven patients who died, four (10.0%) died of cardiac causes and 68.5% were free of symptoms. Technological advances will help to overcome the anatomical difficulties of this surgical technique, and when simplified, will allow it to be reproduced, offering patients a minimally invasive surgical alternative for the treatment of coronary disease, avoiding the limitations of percutaneous transluminal coronary angioplasty and coronary artery bypass graft.
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Kaya K, Cavolli R, Telli A, Soyal MFT, Aslan A, Gokaslan G, Mursel S, Tasoz R. Off-pump versus on-pump coronary artery bypass grafting in acute coronary syndrome: a clinical analysis. J Cardiothorac Surg 2010; 5:31. [PMID: 20423499 PMCID: PMC2873363 DOI: 10.1186/1749-8090-5-31] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Accepted: 04/27/2010] [Indexed: 11/10/2022] Open
Abstract
Background Although off-pump coronary artery bypass (OPCAB) surgery has many beneficial effects compared with on-pump surgery, switch to on-pump surgery has significantly higher risks of operative mortality. Benefits of OPCAB over on-pump surgery strategies concerning myocardial revascularization are still debatable. We have aimed to develop an "algorithm of off-pump surgical strategy" on preventing conversion to on-pump. This clinical study reports our clinical outcome of OPCAB in patients with acute coronary syndrome. Methods Between January 2006 and December 2008, 198 patients with acute coronary syndrome were enrolled in the study. Decision of OPCAB (142 patients) or on-pump surgery (56 patients) was made according to patients' present clinical status and our surgical background. Cardiac enzymes, duration of the surgery, graft numbers, stay in intensive care unit were recorded. Results OPCAP group has shorter operation time (82.78 min versus 164.22 min, p < 0.001), lesser necessity for intra-aortic balloon pumping (3.5% versus 12.5%, p = 0.053), shorter duration of intensive care unit stay (p < 0.05) and hospital stay (p < 0.001) compared to on-pump patients. EuroSCORE level was lower in OPCAP group (p < 0.001). None of the patients of OPCAB group required conversion to on-pump technique. Conclusions The patients who admitted to the hospital with acute coronary syndrome within "golden hours" (within 6 hours after onset) had a greater chance for OPCAB surgery. This study proves that EuroSCORE is likely to be an important factor in deciding which surgical technique to use, but a further investigation is needed to verify. According to our findings, a careful evaluation of coronary angiography, hemodynamic status, quality of target coronary vessel and timing of surgery are important for OPCAB surgery to avoid conversion to on-pump. By a careful systematic evaluation of the patients as explained with this article, it can be prevent or reduce conversion to on-pump surgery during OPCAB surgery.
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Affiliation(s)
- Kaan Kaya
- Division of Cardiovascular Surgery, Ozel Ulus Hastanesi, Ankara, Turkey.
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Teshima H, Kawano H, Kashikie H, Nakamura K, Aoyagi S. Coronary artery bypass grafting in patients with pulmonary aspergillosis. Gen Thorac Cardiovasc Surg 2010; 58:197-201. [PMID: 20401715 DOI: 10.1007/s11748-009-0509-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2008] [Accepted: 07/09/2009] [Indexed: 11/27/2022]
Abstract
Cardiovascular surgery in patients with pulmonary aspergillosis has been rarely reported. Coronary artery bypass grafting (CABG) for three cases of angina pectoris with pulmonary aspergillosis was successfully performed. Patients were discharged from our hospital without any complications of invasive Aspergillus cardiovascular infection. Careful perioperative management for preventing pulmonary complications is important.
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Affiliation(s)
- Hideki Teshima
- Department of Cardiovascular Surgery, Omura Municipal Hospital, Cardiovascular Center, Omura, Nagasaki, Japan.
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Abstract
PURPOSE OF REVIEW Octogenarians are the fastest growing stratum of the population and have the highest prevalence of coronary artery disease. In the past, physicians have been reluctant to provide these patients with optimal care. Seniors are frequently excluded from large randomized trials and generally not included in published guidelines. The purpose of this review is to revisit the demography and epidemiology of coronary artery disease in this population as well as therapeutic strategies used. RECENT FINDINGS Recent publications have shown significant advancement in medical and invasive treatment of coronary artery disease in elderly, with special focus on the potential benefit of off-pump coronary artery bypass (OPCAB) surgery. SUMMARY Although OPCAB surgery has gained popularity over the past 15 years, its benefit regarding operative mortality and major complications has not been clearly defined in the general population. There is a body of literature supporting its benefit in the elderly population. OPCAB surgery has the potential of decreasing operative mortality and major postoperative complications such as stroke, delirium, atrial fibrillation, and decline in neurocognitive functions in these patients. Off-pump surgery is technically more demanding and has been blamed for providing less complete revascularization and lower graft patency rate, especially in less experienced hands. However, with the upcoming demographic explosion of senior citizens in western societies, OPCAB surgery has definitely to be a part of the armamentarium of modern cardiac surgeons.
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Agostini M, Fino C, Torchio P, Di Gregorio V, Feola M, Bertora M, Lugli E, Grossi C. High OPCAB surgical volume improves midterm event-free survival. Heart Surg Forum 2010; 12:E250-5. [PMID: 19833590 DOI: 10.1532/hsf98.20091034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the midterm results of the initial phase of off-pump coronary artery bypass (OPCAB) surgery adoption in a single surgical unit, assessing the impact of procedural volume. METHODS Study participants were 312 patients who underwent OPCAB during the period between August 2000 and January 2005 at S. Croce Hospital. Of these patients, 126 patients with an indication selected for comorbidities or 1-vessel disease underwent OPCAB performed by 4 low-volume surgeons, and 186 unselected patients underwent OPCAB performed by a single high-volume surgeon. RESULTS OPCAB performed by low-volume surgeons was associated with less complete revascularization and less arterial conduit use. Early result analysis showed a low rate of in-hospital or 30-day adverse events. The 5-year survival was 0.88 (0.02 SE). OPCAB performance by a high-volume surgeon and complete revascularization were shown have a protective effect for midterm major adverse cardiac events (respectively, hazard ratio = 0.28, 95% confidence interval 0.11-0.74 and hazard ratio = 0.33, 95% confidence interval 0.15-0.73). CONCLUSION Our study on the initial phase of OPCAB adoption suggests a benefit on midterm outcome from surgery performed by a high-volume surgeon.
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Affiliation(s)
- Marco Agostini
- Cardiovascular Department, S. Croce e Carle Hospital, Cuneo, Italy.
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Atluri P, Kozin ED, Hiesinger W, Joseph Woo Y. Off-pump, minimally invasive and robotic coronary revascularization yield improved outcomes over traditional on-pump CABG. Int J Med Robot 2009; 5:1-12. [DOI: 10.1002/rcs.230] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Aron A, Klinger TA, McConnell TR. Cardiac rehabilitation outcomes no different after on-pump versus off-pump coronary artery bypass surgery. J Cardiopulm Rehabil Prev 2007; 27:35-41. [PMID: 17474642 DOI: 10.1097/01.hcr.0000265018.11037.1a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Clinical evidence supports lower morbidity with off-pump coronary revascularization surgery as well as superior short- and mid-term outcomes, equivalent graft patency, and reduced cost. The purpose of this study was to compare cardiac rehabilitation (CR) outcomes between patients undergoing on-pump versus off-pump coronary artery bypass surgery. METHODS Data were retrospectively examined for patients who participated in CR between 1996 and 2004. Two hundred ninety-five patients who underwent bypass surgery and completed at least 80% of their 36 required sessions were divided into on-pump and off-pump groups. Pre- and post-CR measures included grip strength, flexibility, energy expended during class, quality of life, and self-efficacy. RESULTS Both groups were similar with respect to age, sex, ejection fraction, and mean number of grafts. There were no statistical differences between the on-pump and off-pump groups (P > .05) for weight, abdominal and hip circumferences, grip strength, flexibility, and total energy expenditure. In addition, there were no between-group differences regarding quality of life and self-efficacy. Grip strength, flexibility, and energy expenditure during class improved with CR regardless of the surgical procedure (P = .001). Quality of life (P = .001) and self-efficacy (P = .001) also improved. CONCLUSIONS The present data support the concept that although there are clinical advantages to off-pump surgery, there is no benefit over on-pump surgery regarding CR. Subsequently, patients undergoing off-pump surgery should be managed similarly as their on-pump counterparts.
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Affiliation(s)
- Adrian Aron
- Department of Exercise Science and Athletics, Bloomsburg University, Bloomsburg, PA, USA.
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Amrani M, Al-Ruzzeh S. Controversy of coronary artery bypass grafting with or without cardiopulmonary bypass. J Cardiovasc Med (Hagerstown) 2007; 8:89-90. [PMID: 17299288 DOI: 10.2459/01.jcm.0000260213.76326.c5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Al-Ruzzeh S, George S, Bustami M, Wray J, Ilsley C, Athanasiou T, Amrani M. Effect of off-pump coronary artery bypass surgery on clinical, angiographic, neurocognitive, and quality of life outcomes: randomised controlled trial. BMJ 2006; 332:1365. [PMID: 16740529 PMCID: PMC1476725 DOI: 10.1136/bmj.38852.479907.7c] [Citation(s) in RCA: 138] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To compare the clinical, angiographic, neurocognitive, and quality of life outcomes of off-pump coronary artery bypass surgery with conventional coronary artery bypass grafting surgery using cardiopulmonary bypass. DESIGN Randomised controlled clinical trial. SETTING Tertiary cardiothoracic centre in Middlesex, England. PARTICIPANTS 168 patients (27 women) requiring primary isolated coronary artery bypass grafting surgery. INTERVENTIONS Patients were randomised to conventional coronary artery bypass grafting surgery using cardiopulmonary bypass (n = 84) or off-pump coronary artery bypass surgery (n = 84), carried out by one surgeon. Angiographic examination was carried out at three months postoperatively. Neurocognitive tests were carried out at baseline and at six weeks and six months postoperatively. MAIN OUTCOME MEASURES Clinical outcome, graft patency at three months, neurocognitive function at six weeks and six months, and health related quality of life. RESULTS Graft patency was evaluated by angiography in 151 (89.9%) patients and was similar between the cardiopulmonary bypass and off-pump groups (risk difference - 1%, 95% confidence interval - 5% to 4%), with the off-pump group considered the treatment group. Patients in the off-pump group required fewer blood transfusions (1.7 units v 1.0 unit, P = 0.02), shorter duration of mechanical ventilation (7.7 hours v 3.9 hours, P = 0.03), and shorter hospital stay (10.8 days v 8.9 days). Scores for neurocognitive function showed a significant difference in three memory subtests at six weeks and two memory subtests at six months in favour of the off-pump group. CONCLUSIONS Patients who underwent off-pump coronary artery bypass surgery showed similar patency of grafts, better clinical outcome, shorter hospital stay, and better neurocognitive function than patients who underwent conventional coronary artery bypass grafting surgery using cardiopulmonary bypass.
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Affiliation(s)
- Sharif Al-Ruzzeh
- National Heart and Lung Institute, Imperial College of Science, Technology, and Medicine, Harefield Hospital, Middlesex UB9 6JH
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Rastan AJ, Kempfert J, Eckenstein JI, Hentschel B, Funkat AK, Walther T, Lehmann S, Mohr FW. Koronare Notfalleingriffe im Akuten Koronarsyndrom: Beating-heart versus konventionelle Bypasschirurgie. ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2006. [DOI: 10.1007/s00398-006-0536-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Resano FG, Kapetanakis EI, Hill PC, Haile E, Corso PJ. Clinical Outcomes of Low-Risk Patients Undergoing Beating-Heart Surgery With or Without Pulmonary Artery Catheterization. J Cardiothorac Vasc Anesth 2006; 20:300-6. [PMID: 16750726 DOI: 10.1053/j.jvca.2006.01.017] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2005] [Indexed: 11/11/2022]
Abstract
OBJECTIVE For patients who undergo off-pump coronary artery bypass (OPCAB) surgery, pulmonary artery catheterization (PAC) has been proposed as a useful intraoperative monitoring tool. This study was designed to determine if the choice of PAC versus central venous pressure monitoring (CVP) had any effect on outcome after OPCAB. This study compared these 2 methods of hemodynamic monitoring in low-risk patients undergoing beating-heart surgery via a median sternotomy and evaluated their effect on morbidity and in-hospital mortality. DESIGN Retrospective database and medical record review. SETTING Tertiary care teaching hospital. PARTICIPANTS Low-risk patients who had coronary revascularization via a median sternotomy on the beating heart. INTERVENTIONS None. MEASUREMENTS AND MAIN RESULTS A population of 2,414 low-risk patients who had beating-heart coronary revascularization between January 2000 and December 2003 was reviewed. Most patients (1,671 or 69.2%) received a PAC, whereas 743 (30.8%) had CVP monitoring. Risk-adjusted logistic regression analyses were performed to investigate the effect of each technique on clinical outcomes. The groups were comparable in both baseline characteristics and Parsonett's mortality risk (1.5 +/- 0.9, p = 0.58). Univariate analysis failed to show a difference in operative mortality (p = 0.76), on-pump conversion rate for completion of aortocoronary bypasses (p = 0.82), postoperative low cardiac output (p = 0.10), or prolonged inotropic agent use (p = 0.22). Similarly, in the multivariate analysis, both groups had a similar rate of conversion to an on-pump procedure for completion of coronary artery grafting (p = 0.91), intraoperative intra-aortic balloon pump use (p = 0.69), low cardiac output state (p = 0.16), or in-hospital mortality (p = 0.51). CONCLUSIONS This single-institution, retrospective study suggests that in low-risk patients undergoing beating-heart surgery, CVP monitoring may be sufficient.
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Affiliation(s)
- Fernando G Resano
- Department of Anesthesiology, Washington Hospital Center, 110 Irving Street, NW, Washington, DC 20010-2975, USA.
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Weir I. Coronary artery bypass. Ann R Coll Surg Engl 2006; 88:99-102. [PMID: 16551393 PMCID: PMC1964100 DOI: 10.1308/003588406x95165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Coronary artery bypass grafting as a means of myocardial revascularisation is a remarkably successful operation. Over 25,000 procedures are carried out each year in the UK with an operative mortality of the order of 2% achieved despite an ageing surgical population. Over the last decade, a remarkable increase in the number of patients treated percutaneously by angioplasty and stenting has lead to a levelling off, or even a decline, in the number of patients treated surgically. In an attempt to reduce further the operative morbidity and mortality by excluding that attributable to the extracorporeal circulation, several surgical groups have pioneered performing the procedure without the heart-lung machine (off-pump or OPCAB). Although not a new concept there has been a dramatic increase in its use, lead by the development of sophisticated and disposable devices for stabilising the heart to enable the demanding anastomotic technique required to suture vessels of 1-2 mm often containing degenerative plaque. Concerns remain about the completeness of revascularisation and about the quality of the anastomoses obtained, particularly in the right and circumflex territories which are less accessible than the anterior descending artery. Although some reduction in morbidity has been demonstrated, this has not been as marked as had been hoped. Davies and Wallwork from Papworth argue persuasively and colourfully in favour of the conventional operation and point out the difficulties in designing an appropriate, prospective, randomised,controlled clinical trial because of the apparently small differences in outcome between the two techniques. Amrani and colleagues from Harefield, leading proponents of off-pump surgery using it in virtually 100% of patients undergoing revascularisation, extensively review the comparative literature to date.
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Affiliation(s)
- Ian Weir
- London Chest Hospital, Bonner Road, London E2 9JX, UK.
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Salzberg SP, Adams DH, Filsoufi F. Coronary artery surgery: conventional coronary artery bypass grafting versus off-pump coronary artery bypass grafting. Curr Opin Cardiol 2005; 20:509-16. [PMID: 16234622 DOI: 10.1097/01.hco.0000179817.88200.60] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW Coronary revascularization has become the principal treatment modality in patients with severe coronary artery disease. The broader application of percutaneous coronary interventions in patients with multivessel disease and the recent introduction of drug-eluting stents have both lead to a decline in the number of patients referred for surgical revascularization. Conventional coronary artery bypass grafting using cardiopulmonary bypass is an excellent treatment, however less invasive surgical approaches such as off-pump coronary artery bypass grafting have appeared in the past few years. The exact role of off-pump coronary artery bypass grafting is still vaguely defined and being critically evaluated. Our aim is to provide an objective review of the recent literature in regard to surgical outcomes. RECENT FINDINGS A critical review of all relevant clinical series from May 2003 to May 2005 was conducted. Current prospective data suggests that both techniques have similar rates of mortality, in regard to morbidity, multiple prospective studies suggest a decrease in stroke rates for off-pump coronary artery bypass grafting. The incidence of postoperative myocardial infarction does not appear to differ between techniques. When analyzed carefully, the results presented herein seem to indicate that both techniques provide similar rates for long-term patency and freedom from surgical reintervention. SUMMARY Coronary artery bypass grafting and off-pump coronary artery bypass grafting are both safe and beneficial in patients with multivessel coronary artery disease. It appears that elderly patients with additional co-morbid risk factors may benefit most from off-pump coronary artery bypass grafting. It has become increasingly apparent that off-pump coronary artery bypass grafting can be performed safely in reference centers.
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Affiliation(s)
- Sacha P Salzberg
- Department of Cardiothoracic Surgery, Mount Sinai Medical Center, New York, New York 10029, USA
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Lin TC, Li CY, Tsai CS, Ku CH, Wu CT, Wong CS, Ho ST. Neutrophil-mediated secretion and activation of matrix metalloproteinase-9 during cardiac surgery with cardiopulmonary bypass. Anesth Analg 2005; 100:1554-1560. [PMID: 15920174 DOI: 10.1213/01.ane.0000154307.92060.84] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Cardiopulmonary bypass (CPB) induces neutrophil activation, degranulation, and a systemic inflammatory response. Matrix metalloproteinase (MMP)-9 exists in neutrophils and is released on neutrophil activation. Increased levels of MMP-9 have been observed in patients undergoing CPB. We designed the present study to determine whether MMP-9 is derived from neutrophils during CPB. Twenty-one patients undergoing elective coronary artery bypass grafting with or without CPB were included in this study. Blood was collected and analyzed for MMP-9 and tissue inhibitor of metalloproteinase (TIMP)-1. Neutrophils were also isolated and examined for MMP-9 production and mRNA expression. Plasma levels and activity of MMP-9 increased significantly 2-6 h after beginning CPB, whereas the MMP-9 levels in patients with off-pump cardiac surgery did not increase. The neutrophil content of MMP-9 and mRNA increased significantly 2 h after beginning CPB. The plasma levels of TIMP-1 increased gradually for 6 h, whereas the MMP-9/TIMP-1 ratios were increased 2-4 h after beginning CPB. The present study demonstrated that CPB causes an increase in the concentration and activity of plasma MMP-9. The corresponding increase in neutrophil MMP-9 expression and production suggests that MMP-9 is derived primarily from neutrophils and may contribute to the inflammatory response associated with CPB.
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Affiliation(s)
- Tso-Chou Lin
- *Department of Anesthesiology and †Surgery, Tri-Service General Hospital; and ‡School of Public Heath, National Defense Medical Center, National Defense University, Taipei, Taiwan, Republic of China
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Hemmerling TM, Olivier JF, Basile F, Le N, Prieto I. Bispectral Index as an Indicator of Cerebral Hypoperfusion During Off-Pump Coronary Artery Bypass Grafting. Anesth Analg 2005; 100:354-356. [PMID: 15673855 DOI: 10.1213/01.ane.0000140245.44494.12] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Bradycardia and hypotension are common during off-pump coronary artery bypass grafting (OPCAB). We present a case of possible reversible global cerebral hypoperfusion during distal grafting of the left circumflex coronary artery. The bispectral index (BIS) suddenly decreased from values of 45-50 to 0 during distal grafting. Neurologic evaluation after immediate tracheal extubation in the operating room was normal and the 58 yr old patient did not suffer any neurologic sequelae. Postoperative recovery was uneventful and the patient was discharged 5 days after surgery. Cerebral hypoperfusion is a possible complication during OPCAB. BIS monitoring in OPCAB could be an indicator of cerebral hypoperfusion.
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Affiliation(s)
- Thomas M Hemmerling
- From the Perioperative Cardiac Research Group (PECARG), Departments of Anesthesiology and *Cardiac Surgery, Centre Hospitalier de l'Université de Montréal (CHUM), Hôtel-Dieu, Université de Montréal, Montréal, Québec, Canada
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Raja SG, Dreyfus GD. Will off-pump coronary artery surgery replace conventional coronary artery surgery? J R Soc Med 2004. [PMID: 15173328 DOI: 10.1258/jrsm.97.6.275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Shahzad G Raja
- Department of Cardiac Surgery, Alder Hey Hospital, Liverpool L12 2AP, UK.
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Affiliation(s)
- Bruce W Lytle
- Department of Thoracic and Cardiovascular Surgery, The Cleveland Clinic Foundation, 9500 Euclid Ave, F-25, Cleveland, Ohio 44195, USA.
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