Evaluation of coated oxygenators in cardiopulmonary bypass systems and their impact on neurocognitive function

Perfusion ◽  
2005 ◽  
Vol 20 (5) ◽  
pp. 249-254 ◽  
Author(s):  
Amir Khosravi ◽  
Christian A Skrabal ◽  
Bernd Westphal ◽  
Guenther Kundt ◽  
Brigitte Greim ◽  
...  
Keyword(s):  
Cardiopulmonary Bypass ◽  
Perioperative Complications ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Neurocognitive Function ◽  
Hollow Fibre ◽  
Protective Effects ◽  
Neurocognitive Functions ◽  
Group A ◽  
Group B

Introduction: Coronary artery bypass graft surgery (CABG) using cardiopulmonary bypass (CPB) is assumed to be associated with a decline of neurocognitive functions. This study was designed to analyse the neurocognitive function of patients with coronary heart disease before and after CABG and to determine possible protective effects of oxygenator surface coating on neurological outcome. Methods: Forty patients scheduled for selective CABG were prospectively randomized into two groups of 20 patients each according to the type of hollow-fibre membrane oxygenator used. Non-coated oxygenators (Group A) were compared to phosphorylcholine (PC)- coated oxygenators (Group B). A battery of six neurological tests was administered preoperatively, 7 - 10 days and 4 - 6 months after surgery. Results: One patient of Group A suffered from a perioperative stroke and died on postoperative day 3, presumably because of sudden heart failure. Two patients of Group A (10%) developed a symptomatic transitory delirious psychotic syndrome (STPT) on postoperative days 3 and 5. None of the patients of Group B had perioperative complications. The test analysis revealed a trend of declined neurocognitive function early after CABG, but did not show any difference in neurocognitive outcome between the two groups. Discussion: PC coating of the oxygenators did not show any significant benefit on neurocognitive function after CABG using CPB.

scholarly journals Predictors of Atrial Fibrillation following Coronary Artery Bypass Grafting

2011 ◽  
Vol 5 ◽  
pp. CMC.S7170 ◽  
Author(s):  
Feridoun Sabzi ◽  
Abdol Hamid Zokaei ◽  
Abdol Rasoul Moloudi
Keyword(s):  
Atrial Fibrillation ◽  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Univariate Analysis ◽  
Bypass Graft ◽  
Multivariate Logistic Regression Analysis ◽  
Categorical Variables ◽  
Group A ◽  
Group B

Background Atrial fibrillation (AF) is a frequent and serious complication of coronary artery bypass graft (CABG) surgery. Methods: We undertook a retrospective review of the records of patients undergoing CABG at Imam Ali Hospital between February 1, 2003 and February 1, 2006. The patients were divided in two groups, ie, Group A (AF) and Group B (no AF). The association between the occurrence of AF following CABG and other variables was compared with respect to continuous or categorical variables by t-test and χ2-test. Results Multivariate logistic regression analysis of potentially predictive factors in univariate analysis showed that opium use, type of operation, and crossclamp time were predictors of AF following CABG. Conclusion This study identifies some new predictors of postoperative AF, control of which could lead to a lower incidence of AF and reduced morbidity, mortality, and resource utilization for patients undergoing cardiac surgery.

scholarly journals Bisoprolol Versus Corticosteroid and Bisoprolol Combination for Prevention of Atrial Fibrillation After On-Pump Coronary Artery Bypass Graft Surgery

2019 ◽  
Vol 13 (1) ◽  
pp. 18-24
Author(s):  
Ramy Mahrose ◽  
Ahmed M. Elsayed ◽  
Mohamed S. Elshorbagy
Keyword(s):  
Atrial Fibrillation ◽  
Coronary Artery ◽  
Coronary Artery Bypass Graft ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Group A ◽  
Pump Coronary Artery Bypass ◽  
Group B

Background:The most common cardiac arrhythmia that happens after on-pump Coronary Artery Bypass Graft (CABG) surgery is Atrial Fibrillation (AF). It is combined with several postoperative complications such as increased incidence of stroke, increased hospital stay and increased costs.Objectives:The aim of this study was to look for safe, effective, reliable and well tolerated tools for the prevention of atrial fibrillation after on pump coronary artery bypass surgery.Patients and Methods:The study enclosed 176 patients (the age ranges from 40 to 79 years) and scheduled for elective on-pump CABG operations without concomitant procedures. The patients were selected randomly into two equal groups. Group (A) in which bisoprolol was used to prevent atrial fibrillation after surgery. Group (B) in which bisoprolol and hydrocortisone were used for prevention of atrial fibrillation after surgery. For each patient, the following data were collected: gender, preoperative diseases, cardiopulmonary bypass time, intraoperative cross clamp time, Left internal mammary Artery usage, incidence of postoperative atrial fibrillation, death, myocardial infarction chest infection and C-reactive protein amount in plasma.Results:There was a statistically significant decrease in the occurrence of atrial fibrillation in group (B) when compared to corresponding values in group (A). Also, group (B) showed a statistically significant decrease in length of hospital stay in comparison to group (A). C-reactive protein concentrations on the 1stand 2ndpostoperative days were lower significantly in group (B) than in group (A). There were no statistically significant differences between both groups regarding gender, preoperative diseases, cardiorespiratory bypass time, intraoperative cross clamp time, Left internal mammary artery usage, death, myocardial infarction and chest infection.Conclusion:This study demonstrated that using bisoprolol and hydrocortisone combination showed greater benefit than the use of bisoprolol only for prevention of postoperative AF after on-pump coronary artery bypass graft surgery.

Antegrade-Retrograde Cardioplegia for Myocardial Protection during Coronary Artery Bypass Graft Surgery

1998 ◽  
Vol 6 (3) ◽  
pp. 188-194
Author(s):  
Tarek A Abdel Aziz ◽  
Najib Al Khaja ◽  
Mohamed A Ali ◽  
Ali S Maklad ◽  
Mohamed F Bassiouny ◽  
...  
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass Graft ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Myocardial Damage ◽  
Artery Bypass Graft ◽  
Retrograde Cardioplegia ◽  
Group A ◽  
Group B

This prospective randomized clinical study was designed to assess and compare the use of combined antegrade-retrograde cardioplegia versus antegrade cardioplegia in providing adequate myocardial preservation during coronary artery bypass graft surgery. Fifty patients undergoing elective coronary artery bypass grafting were randomly divided into 2 groups according to the route of cardioplegic delivery: group A (25 patients) received antegrade cold crystalloid cardioplegia; group B (25 patients) received combined antegrade-retrograde cold crystalloid cardioplegia. The groups were compared by clinical and electrocardiographic criteria and biochemical markers of ischemic myocardial damage. There was a highly significant statistical difference between the groups in terms of spontaneous recovery of sinus rhythm (40% of patients in group A versus 96% in group B). The use of direct current shock to restore sinus rhythm was higher in group A (60%) compared with group B (4%). Low cardiac output occurred in 20% of patients in group A and in 16% of patients in group B but this difference was not statistically significant. No bundle-branch block was found in group B whereas the incidence was 8% in group A. Significantly higher levels of biochemical markers of myocardial damage were obtained in group A at 10 minutes, 4 hours, and 12 hours after declamping. These results indicate that combined antegrade-retrograde cardioplegia is superior to antegrade cardioplegia for myocardial protection during coronary artery bypass graft surgery.

Thoracoscopic Transmyocardial Laser Revascularization: Is Prior Coronary Artery Bypass Grafting a Contraindication?

2007 ◽  
Vol 2 (3) ◽  
pp. 112-115 ◽  
Author(s):  
Gary S. Allen ◽  
Jason Budde
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Left Internal Mammary Artery ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Airway Injury ◽  
Transmyocardial Laser Revascularization ◽  
Port Access ◽  
Group A ◽  
Group B

Objective Recently, thoracoscopic techniques have been used to perform transmyocardial laser revascularization (TMR) in patients who are not suitable candidates for coronary artery bypass graft (CABG) surgery or percutaneous coronary interventions. Whether or not prior CABG contraindicates a port access–only approach to TMR is unclear. This study compares patients with and without prior CABG who have undergone thoracoscopic TMR. Methods Between May 2003 and October 2005, 23 consecutive patients (6 without prior CABG, group A; and 17 with prior CABG, group B) underwent thoracoscopic TMR, using a holmium:yttriumaluminum-garnet (Ho:YAG) laser system. Either 3 or 4 port incisions (each ≤2 cm in length) were used, depending on the patient's anatomy. Procedural success was defined as the ability to create all intended channels without conversion to thoracotomy. Results Patient demographics were not significantly different between group A and group B (mean age, 65.8 ± 4.3 years versus 67.4 ± 2.4 years, Canadian Cardiovascular Society angina class 3.7 ± 0.2 versus 3.9 ± 0.1, and Parsonnet score 12.0 ± 3.2 versus 20.5 ± 2.4). Fourteen (82.4%) group B patients had a prior left internal mammary artery to left anterior descending artery graft, of which 12 (85.7%) were patent. One patient in group A had an airway injury at intubation that led to an extended hospital stay of 30 days. One patient in group A (16.7%) and one patient in group B (5.9%) required a blood transfusion (P = NS). Adhesion lysis time in group B ranged from 0 to 68 minutes (mean, 27 ± 5.6 minutes). Neither group had a conversion to thoracotomy or any deaths through a mean combined follow-up of 12 months. Conclusions A port access approach is safe and reproducible for patients who are candidates for sole therapy TMR. Prior CABG, including patent grafts, is not a contraindication to thoracoscopic TMR.

Cardiopulmonary bypass support for treatment of left ventricular failure following coronary artery bypass grafting: the effects on epicardial microflow and graft flow

Perfusion ◽  
1996 ◽  
Vol 11 (5) ◽  
pp. 407-414
Author(s):  
Yijiang Chen ◽  
Bo Liu ◽  
Ali Belboul
Keyword(s):  
Heart Failure ◽  
Cardiopulmonary Bypass ◽  
Mean Arterial Pressure ◽  
Arterial Pressure ◽  
Artery Bypass ◽  
Left Ventricular ◽  
Graft Flow ◽  
Group A ◽  
The Mean ◽  
Group B

The relationship between graft blood flow, epicardial microflow and mean arterial pressure were studied to evaluate the use of repeated cardiopulmonary bypass (CPB) support for intraoperative heart failure following aorto-coronary bypass surgery. Ten patients with unstable angina and suffering from intraoperative heart failure (group A) were compared to 22 patients with stable angina (group B). In group A, during heart failure, the mean arterial pressure fell by 41 % (29.9 ± 6.8 mmHg, p < 0.01), graft flow (GF) by 67% (9.2 ± 2.6 ml/min, p < 0.01) and epicardial microflow by 64% (19 ± 4 AU, p < 0.01). After 15-56 min of assisted CPB support, the epicardial microflow and GF were partially restored. There were significant correlations between GF, epicardial microflow and CPB time. In group B, after protamine infusion, the epicardial microflow and GF were significantly greater than group A values (66 ± 14 AU, p < 0.001 and 29 ± 9 ml/min, p < 0.001, respectively). It is concluded that the use of temporary assisted CPB support to treat intraoperative heart failure allows the recovery of the myocardium and thereby restores the mean arterial pressure. The recovery of GF and epicardial flow occurred to a lesser extent. CPB support appeared to be suitable for about 60 min, probably because of increasing disturbance to the GF and the epicardial microcirculation.

scholarly journals Atrial fibrillation after Coronary Artery Bypass Surgery with and without Cardiopulmonary Bypass

2018 ◽  
Vol 10 (2) ◽  
pp. 171-179
Author(s):  
Md Rezaul Karim ◽  
Tawfiq Ahmed ◽  
Shahriar Moinuddin ◽  
Tariq Ahmed Chowdhury ◽  
Moshfequre Rahman Khan
Keyword(s):  
Cardiopulmonary Bypass ◽  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Myocardial Revascularization ◽  
Off Pump ◽  
Coronary Artery Bypass Operation ◽  
Group A ◽  
Pump Cabg ◽  
Group B

Background:Atrial fibrillation (AF) is the most common postoperative supraventricular arrhythmi. 20% to 40% of patients have AF after coronary artery bypass operation (CABG).Arrhythmia of all grades may occur due to cardiopulmonary bypass (CPB) and injuries inflicted during operativeprocedures. Thus it has been proposed that CABG surgery would be safer if CPB could be avoided.Methods:Total 60 patients who underwentCABG were selected for the study and divided in two groups. Group A: 30 patients with Off-pump CABG (OPCAB) and Group B: 30 patients with On-pump CABG. 12 lead ECG was done at morning on the day of surgery, after surgery & when any arrhythmia are noted for at least 7days. Morbidity of patients like arrhythmia and hospital mortality were recorded and compared during the first week after surgery.Results:Off-pump group (group- A) had less incidence of post-operative AF than on-pump group(group-B) (10% vs 40%). Postoperative blood requirement,total operative time, the period of mechanical ventilation,ICU stay and total postoperative hospital stayis significantly shorter in off-pump than in on-pump group of patients.Conclusion: This study clearly demonstrates that off pump CABG procedure is associated with less incidence of AF. Therefore OPCAB procedure for myocardial revascularization is clearly justified whenever feasible.Cardiovasc. j. 2018; 10(2): 171-179

scholarly journals Postoperative Tachyarrhythmias: On-Pump versus Off-Pump Coronary Artery Bypass Grafting

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Mohamed Shehata ◽  
Bassem AbdElhalim ◽  
Hany Hanna ◽  
Mervat Nabih
Keyword(s):  
Coronary Artery ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Categorical Variables ◽  
Off Pump ◽  
Electrocardiographic Monitoring ◽  
Significant Difference ◽  
Group A ◽  
Group B

Objective. Tachyarrhythmias, after coronary artery bypass graft (CABG) surgery, develop in 11%–40% of patients. Surgery technique (on-pump or off-pump) might affect incidence of post-CABG tachyarrhythmias. Methods. The study included 60 patients undergoing CABG (≥2 grafts) with left ventricle ejection fraction (LV EF) >40%. Patients were divided into two groups equally: group A (on-pump) and group B (off-pump). Patients were subjected to electrocardiographic monitoring (7 days postoperatively), transthoracic echocardiography, with recording of surgical details and complications. Results. Data collected between December 2012 and May 2013 showed no significant difference between two groups regarding incidence of postoperative tachyarrhythmias with statistically significant higher incidence of supraventricular tachycardia in group B (P<0.05) and a trend towards higher incidence of atrial fibrillation in group A. Patients who developed postoperative tachyarrhythmias in group A showed higher prevalence of family history of coronary artery disease and higher incidence of postoperative chest infections (P<0.05), while those in group B showed higher mean LV EF (pre- and postoperatively) (P<0.05). Data were statistically described in terms of mean ± standard deviation. Comparison of numerical and categorical variables was done using Student’s t- and Chi-square tests, respectively. Conclusion. Adopting off-pump CABG technique is not associated with less incidence of post-operative tachyarrhythmias, as compared to on-pump technique.

Minimally Invasive Direct Coronary Artery Bypass Graft Surgery: Experience during the Learning Curve

1997 ◽  
Vol 5 (1) ◽  
pp. 15-19 ◽  
Author(s):  
Kit V Arom ◽  
Robert W Emery
Keyword(s):  
Coronary Artery ◽  
Minimally Invasive ◽  
Coronary Artery Bypass ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Length Of Hospital Stay ◽  
Surgical Approaches ◽  
Risk Patients ◽  
Group A ◽  
Group B

This communication briefly details the goals, indications, surgical approaches, and limitations of minimally invasive direct coronary artery bypass surgery. The clinical data of 93 cases performed at our institution were analyzed. These patients were divided into two groups: group A consisted of 70 healthy low-risk patients with single left anterior descending or right coronary artery lesions; group B consisted of 23 high-risk patients who had major contraindications to conventional cardiopulmonary bypass procedures. Using The Society of Thoracic Surgeons' preoperative predicted risk module, group A had a 1% predicted mortality versus 5% in group B. The 30-day mortality was 1% in group A and 13% in group B. The postoperative length of hospital stay averaged 4 days for group A and 9 days for group B. Short-term follow-up is promising and 83% of patients are free of angina.

Effect of Pleurotomy During Internal Mammary Artery Harvest on Pulmonary Function

1970 ◽  
Vol 3 (2) ◽  
pp. 163-168
Author(s):  
AMA Rahim ◽  
G Kibria ◽  
NU Ahmed
Keyword(s):  
Pulmonary Function ◽  
Vital Capacity ◽  
Internal Mammary Artery ◽  
Artery Bypass ◽  
Bypass Graft ◽  
Artery Bypass Graft ◽  
Internal Mammary ◽  
Group A ◽  
Study Population ◽  
Group B

Background: Pulmonary function after coronary artery bypass graft surgery using harvested Internal mammary artery(IMA) were assessed in this prospective case control Clinical study comparing two groups of Patients with or without pleurotomy. Method: we conducted this Study at National Institute of Cardiovascular Diseases (NICVD), Dhaka, in the Department of Cardiovascular Surgery.A total of 60 consecutive patients undergoing CABG with use of IMA between july 2005 to June 2007 were reviewed. Study population were divided into Group A (n=30,undergone CABG with pleurotomy during IMA harvestion).Group B (n=30,undergone CABG with intactpleura during IMA harvestion). Results: in lung function spirometry revealed FEV1 significantly decreased in group A than B (56.81±17.76% Vs 79.85±7.7%; p=0.035)and when FEV1correalated with inspiratory vital capacity the advantage of intact pleura were confirmed at 6th postoperative day (78.02 ±12.17; B, 82.08 ±11.72 p=0.045). Vital capacity was significantly decreased in-group A than B at 3 months postoperatively (A 88.79 ± 14.38%;B 98.11±30.25%; p=0.009), but not on 6th Postoperative day. Pleuropulmonary complication like atelectasis, pleural effusion insignificantly higher in groupA than B(16.7 %VS6.7%) and (10% vs. 6.7%)at 6th postoperative day but not at 3months postoperatively. Conclusions: These results demonstrate that pleurotomy during Internal mammary artery harvesting significantly deteriorated pulmonary function variably than intact pleura group of patients Keywords: Pleurotomy; Internal mammary artery(IMA); Pulmonary function; CABG DOI: http://dx.doi.org/10.3329/cardio.v3i2.9186 Cardiovasc. J. 2011; 3(2): 163-168

Sign in / Sign up

Export Citation Format

Share Document