Outcomes of Urgent Coronary Artery Bypass Graft Surgery Following Non-ST Elevation Myocardial Infarction

Background: Non-ST elevation myocardial infarction (NSTEMI) significantly reduces patient survival, a condition that is essential for the optimization of results and the restoration of effective vascular flow multivessel coronary artery disease, Emergency coronary artery bypass grafting (CABG) is frequently contemplated. In the aftermath of NSTEMI, the objective of this investigation is to assess the results of urgent CABG, to prioritize risk stratification through the use of the Global Registry of Acute Coronary Events (GRACE) score Methods: An analysis of 60 consecutive patients who underwent emergent CABG following NSTEMI was conducted retrospectively. Data on patients were obtained from a prospectively compiled database, and the GRACE score was implemented to evaluate the probability of mortality. Patients were divided into three risk categories: low (<10%), intermediate (10-19%), and high (?20%), based on their predicted mortality percentages. Results: Patients in the high-risk group (Group 3) exhibited significantly lower Euro Scores and ejection fractions (EF) than those in the low and intermediate groups, as demonstrated by the study. Additionally, the cross-clamp time was notably longer in Group 3, highlighting the urgency of intervention in this population The postoperative complications' overall incidence did not differ significantly between the groups. Even though Group 3 exhibited an increased in-hospital mortality rate. Conclusions: The findings underscore the importance of timely intervention and tailored management strategies for NSTEMI patients, more specifically, the individuals who have been classified as high-risk by the GRACE score. This study contributes to the growing body of literature supporting urgent CABG as a lifesaving procedure and emphasizes the need for further research to optimize outcomes in this vulnerable patient population. The results advocate for a multidisciplinary approach to enhance perioperative care and improve survival rates among NSTEMI patients undergoing CABG.

Intraoperative Innovation Leading to a Modified Endotracheal Tube: A Case Report of Endobronchial Intubation of Total Laryngectomy Stoma

The post?total laryngectomy airway poses perioperative challenges to anesthesia management. While endobronchial intubation is a cited complication, a low?lying stoma may increase this risk. Furthermore, the stoma’s proximity to a median sternotomy increases surgical and airway management complexity. This report highlights a case of endobronchial intubation in a patient with a low?lying stoma who presented for coronary artery bypass graft. With a stoma at the upper border of the sternum, intraoperative innovation was required to prevent endobronchial intubation while remaining out of the surgical field. This innovation may be useful in urgent surgical situations.

The impact of pre-operative uric acid levels on post-operative renal outcomes in off-pump coronary artery bypass grafting patients

Background: Elevated pre-operative uric acid levels significantly impact post-operative renal outcomes in off-pump CABG patients, increasing the risk of acute kidney injury, as evidenced by higher serum creatinine and reduced urine output. Methods: This cross-sectional study was conducted in Department of Cardiac Surgery, Bangabandhu Sheikh Mujib Medical University (BSMMU), Shahbag, Dhaka, Bangladesh from January 2021 to December 2022. Total 160 patients undergoing off pump CABG were divided into two groups, group A and group B, each containing 80 patients. In group A, uric acid level was <7 mg/dl for male and <6 mg/dl for female and in group B, it was >7 mg/dl and >6 mg/dL for female. Results: The demographic characteristics, pre-operative serum UA levels and serum creatinine levels between the two groups was not statistically significant. Group A had shorter operative times (mean 265.21�.33 minutes) compared to Group B (mean 327.04�.32 minutes), with more patients in Group-B undergoing longer surgeries (>360 minutes). Group-B also had more grafts (mean 4.4 vs 3.6), higher serum creatinine (1.91 vs 1.17 mg/dl), bilirubin (0.8 vs 0.7 mg/dl), and lower urine output (mean 47.52 vs 95.37 ml/hour), all statistically significant (p<0.001). Conclusions: This study concludes that there is significant impact of pre-operative uric acid levels on post-operative renal outcomes in off-pump CABG patients.

Skeletonized Left Internal Mammary Artery Harvesting is better than Pedicled Left Internal Mammary Artery Harvesting in the Context of Sternal Wound Complication Following Off-Pump Coronary Artery Bypass Grafting

Background: Off-pump coronary artery bypass grafting抯 most difficult complication is sternal wound. Left internal mammary artery harvesting affects sternal wound complications. It is unclear which left internal mammary artery harvesting method prevents sternal wound complications. Skeletonized and pedicled left internal mammary artery harvesting were compared for sternal wound complications during off-pump coronary artery bypass grafting. As a result, proper methodology might be supported as an attractive method to decrease the incidence of sternal wound complication. Material & Methods: This comparative cross-sectional study was conducted at the department of cardiac surgery, Bangabandhu Sheikh Mujib Medical University. Total 120 patients were enrolled after fulfilling the selection criteria and divided into two groups. Among them,60 patients of group A received skeletonized left internal mammary artery whereas 60 patients of group B received pedicled left internal mammary artery. After performing off-pump coronary artery bypass grafting postoperative ICU care was given to each patient as per ICU protocol. Statistical analysis was conducted using Statistical Package for Social Science (SPSS) version 26.0 for windows software. Comparisons between groups were made with Student抯 t-test, Chi-Square test and Fisher抯 exact test. Observations were recorded as statistically significant if ap-value ?0.05. Results: In this study 10 (8.33%) patients developed sternal wound complication. Among them2 (1.67%) patients in group A and 8 (6.66%) patients in group B developed sternal wound complication. Occurrence of sternal wound complication was more in group B than group A which was not statistically significant(p=0.35). The mean age of patients in Group A and Group B were 54.34�.55 years and 53.50�.70 years respectively. Age was not statistically significant between two groups (p=0.89). The gender difference among two groups were not also statistically significant(p=0.69). Mean BMI was 24.33�65 in group A and 24.55�45 in group B and findings were not statistically significant between groups (p=0.76). The differences between comorbidities (HTN, DM, dyslipidaemia, anaemia) of both groups were statistically insignificant (p>0.05). However, number of smokers was statistically significant between groups (p=0.03). Sternal wound complication was more in smoker patients in group B and this finding was statistically significant(p=0.04). Mean � SD number of bypass grafts used by group A was 2.76�79 and group B was 2.83 �65(P=0.69). Pre-operative parameters such as duration of operation and post-operative parameter like duration of mechanical ventilation, duration of chest drains, duration of central venous line and amount of postoperative mediastinal bleeding were found statistically not significant between groups (p>0.05). Comparison of postoperative laboratory parameters was statistically not significant between groups. Distribution of wound complications, duration of ICU and hospital stay between two groups were also not statistically significant (p>0.05). Conclusions: Occurrence of sternal wound complication was found less in skeletonized left internal mammary artery harvesting than pedicled left internal mammary artery harvesting after off-pump coronary bypass grafting in this study. But this finding was not statistically significant.

Impact of Posterior Pericardiotomy on Prevention of Post Operative Atrial Fibrillation in Patients Undergoing Coronary Bypass Surgery

Purpose: Coronary artery bypass grafting surgery (CABG) is a common surgical procedure used to treat coronary artery disease (CAD). Despite advancements in the surgical techniques and perioperative care, cardiac surgery patients remain at risk of developing complications, especially atrial fibrillation (AF), The present study aimed to investigate the impact of posterior pericardiotomy on the incidence of postoperative AF and other relevant complications following CABG. Methods: This study is a randomized controlled trial conducted at a single center. A total of 204 patients were randomly assigned to two groups: the pericardiotomy group and the non-pericardiotomy group (control group). The study assessed the incidence of postoperative atrial fibrillation within the first 7 days following CABG surgery. Results: Our findings revealed no statistically significant difference in the incidence of pericardial effusion and AF between the pericardiotomy and non-pericardiotomy groups. The lack of cardiopulmonary bypass (CPB) in the on-pump CABG method may have contributed to the absence of significant differences in pericardial effusion rates between the groups. Moreover, we found that posterior pericardiotomy did not significantly affect the intubation time, length of stay in the intensive care unit (ICU), and total hospital stay in either group. Our study differs from previous research that focused on off-pump CABG patients. Studies that utilized CPB reported a significant reduction in pericardial effusion and arrhythmias with posterior pericardiotomy. This discrepancy suggests that the use of CPB may play a crucial role in the occurrence of arrhythmias and subsequent complications. Conclusions: our study indicates that posterior pericardiotomy did not significantly influence the incidence of pericardial effusion and AF in on-pump CABG patients. Considering the differences in surgical techniques and patient populations, further research with larger sample sizes is warranted to provide more definitive insights into the role of posterior pericardiotomy in this specific setting. Comprehensive studies will be instrumental in guiding clinical decisions and establishing best practices for the prevention of postoperative pericardial effusion and arrhythmias in on-pump CABG patients.

Incidence and Risk Factors for Postoperative Visual Loss after Cardiac Surgical Procedures: A Systematic Review

Postoperative visual loss (POVL) is an infrequent yet consequential complication that can follow cardiac surgical interventions. This systematic review aims to provide a comprehensive analysis of the incidence of POVL after cardiac surgery and to delineate the associated risk factors. A comprehensive search was conducted in major medical databases for relevant studies published up to September 2022. Eligible studies reporting on the incidence of POVL and identifying risk factors in patients undergoing cardiac surgery were included. Data extraction was performed independently by two reviewers. The pooled incidence rates and the identified risk factors were synthesized qualitatively. POVL after cardiac surgery has an overall incidence of 0.015%, that is, 15 cases per 100,000 cardiac surgical procedures. Risk factors for POVL include patient characteristics (advanced age, diabetes, hypertension, and preexisting ocular conditions), procedural factors (prolonged surgery duration, cardiopulmonary bypass time, and aortic cross?clamping), anesthetic considerations (hypotension, blood pressure fluctuations, and specific techniques), and postoperative complications (stroke, hypotension, and systemic hypoperfusion). Ischemic optic neuropathy (ION) is an uncommon complication, associated with factors like prolonged cardiopulmonary bypass, low hematocrit levels, excessive body weight gain, specific medications, hypothermia, anemia, raised intraocular pressure, and micro?embolization. Diabetic patients with severe postoperative anemia are at increased risk for anterior ischemic optic neuropathy (AION). Posterior ischemic optic neuropathy (PION) can occur with factors like hypertension, postoperative edema, prolonged mechanical ventilation, micro?embolization, inflammation, hemodilution, and hypothermia. While the overall incidence of POVL postcardiac surgery remains modest, its potential impact is substantial, necessitating meticulous consideration of modifiable risk factors. Notably, prolonged surgical duration, intraoperative hypotension, anemia, and reduced hematocrit levels remain salient contributors. Vigilance is indispensable to promptly detect this infrequent yet visually debilitating phenomenon in the context of postcardiac surgical care.

Correlation between Pre-Operative Myocardial Fibrosis and Early Post CABG Dysrhythmia

Background: Cardiac magnetic resonance (CMR) imaging combines the assessment of both the functional and structural aspects of the heart in order to identify the existence, timing, and intensity of ischemic heart disease by analyzing the function of the myocardium and the movement of the heart wall. This study aimed to investigate whether preoperative myocardial fibrosis, measured by CMR imaging, may be used to predict the incidence of rhythm disturbances in the early postoperative phase after coronary artery bypass grafting (CABG) surgery. Methods: Two groups of 92 patients who had CABG procedures performed were studied in this retrospective observational single site cohort study: There were 43 patients in Group A who had atrial or ventricular arrhythmia, and 49 patients in Group B who did not. Results: There was no correlation between arrhythmia and non-arrhythmia group and age, sex, body mass index, risk factor, CMR timing before surgery, cross clamp time, bypass time, left ventricular end-diastolic volume index (LV EDVI), LV end-systolic volume index (ESVI), stroke volume index (SVI), LV ejection fraction (EF) and territory of scar and were positive correlation between both groups and scar (P <0.001). Scar% was an independent predictor of occurrence of rhythm disturbance (P=0.002) while LV EDVI, LV EF, LV ESVI, SVI, and presence of scar were not. Group A had a statistically significantly lower LV-EF% and lower LV-SVI compared to Group B. Group A had a higher scar percentage compared with group B and this was statistically significant (P <0.001). Rhythm disturbance occurred more often in patients with a scar percentage >14.8% {P=0.0002 and area under ROC curve (AUC)=0.708}. Conclusions: CMR has evolved as a gold standard non-invasive imaging tool in cardiovascular medicine. Preoperative CMR imaging may be a promising tool for predicting postoperative cardiac arrhythmia after CABG. Our study showed that preoperative myocardial scarring >14.8%, as determined by CMR imaging, was predictive of early postoperative arrhythmia in patients undergoing CABG.

Comparision Of Perioperative Serum Lactate Level In On-Pump Versus Off-Pump Coronary Artery Bypass Graft

Coronary artery bypass grafting (CABG) can be performed with the use of cardiopulmonary bypass (onpump CABG) or without (off-pump CABG). Lactate is used as a marker for oxygen deciency in anaerobic metabolism at the tissue level. Increase in tissue lactate concentration is associated with cellular dysfunction due to the depletion of high energy phosphate compounds. This Institution based Retrospective study was done to Compare the peri - operative serum lactate levels in patients undergoing On-pump versus Off-pump CABG Surgery. Total 20 patients were analysed with mean age of 56.35 +- 4.33 years. EURO score-2 shows 0.85 +- 0.28 and 1.21 +- 0.54 in On-pump and Off-pump respectively. EURO score-2 is high in Off-pump when compared with On-pump and this ndings are statistically not signicant (p: 0.07). Peak lactate levels in On-pump& Off-pump CABG are 4.7& 5.8 mmol/dl respectively. Older studies showed that there was a signicant association seen between lactate level and CPB. Off-pump surgery may improve short-term outcomes such as renal failure and stroke. In our study, there were no signicant differences in postoperative patterns of release of Lactates in patients with On-pump v/s Off-pump.

Early Results of Endoscopic Versus Open Saphenous Vein Harvesting in Coronary Artery Bypass Grafting: A Single Blinded Randomized Controlled Trial

Background: The great saphenous vein (GSV) remains the most commonly used conduit worldwide for the majority of coronary artery bypass surgery (CABG) procedures, despite concerns regarding the long-term patency of arterial revascularization. Therefore, our aim is to assess and demonstrate the impact of harvesting techniques on patient quality of life and early post-operative outcomes. Methods: This prospective, single-blinded randomized controlled study enrolled patients with ischemic heart disease indicated for CABG. The study was conducted at the Cardiothoracic and Vascular Surgery Center (CVSC) at Mansoura University, Mansoura, and El-Galaa Military Hospital, Cairo, involving 32 patients. Patients were categorized into two groups: Group I comprised sixteen patients where the GSV was harvested using the open vein harvesting technique (OVH), and Group II included sixteen patients where the GSV was harvested using the endoscopic vein harvesting technique (EVH). Results: Multivariate regression analysis evaluating the effect of the endoscopic technique revealed a significant correlation with postoperative outcomes, particularly in terms of leg wound complications assessed by the ASEPSIS score (p?<?0.001) and the prediction of postoperative NRS values for leg pain (p?0.001). Additionally, the impact on patients' quality of life across all subclinical categories was assessed using the Euro-Qol 5D (p?<?0.001). Conclusion: EVH presents itself as a viable minimally invasive alternative to traditional OVH techniques. It offers greater patient comfort, improved cosmetic satisfaction, a reduced incidence of postoperative leg wound complications, and lower levels of pain. Moreover, there is a statistically significant association between performing EVH techniques and enhanced quality of life, as well as a decrease in total ASEPSIS scores.

When is the Ideal Time to Calculate the Vasoactive Inotropic Score as a Predictor of Mortality and Morbidity in Cardiac Surgery? A Retrospective Study

Introduction: The aim of this study was to evaluate the prediction of vasoactive inotropic score (VIS) on early mortality and morbidity after coronary artery bypass grafting (CABG) and to determine the ideal time for score calculation. Materials and Methods: The study included patients who underwent isolated on?pump CABG surgery between November 2021 and November 2022. Pre, intra, and postoperative data were obtained by retrospective chart review. The final VIS value in the operating room (VISintra) and the highest VIS value in the first 24 hours in the intensive care unit (VISmax) were calculated. The patients were divided into two groups; Group 1 who developed early postoperative morbidity and mortality and Group 2 who did not. And the data were analyzed by groups. Results: A total of 221 patients with a mean age of 63.49 ± 9.96 years were evaluated and 73 (33%) were in Group 1. The cut?off value for VISintra was determined to be 6.20, VISmax was 6,05. VISintra and VISmax values were significantly higher in the poor outcome group. Multivariate analysis showed that only VISmax value was an independent variable on mortality?morbidity. Conclusions: Our results imply that the vasoactive inotropic score is an easy and inexpensive score to calculate and can be used as a specific scoring system to predict poor early outcomes in CABG patients. According to statistical analyses, the most predictive time among VIS measurements was VISmax, the highest value calculated in the ICU in the first 24 hours postoperatively.

Assessment of Risk Prediction Using Edmonton Frail Scale and European System for Cardiac Operative Risk Evaluation II among Older Patients Undergoing Coronary Artery Bypass Graft Surgery in a Tertiary Care Hospital in India

Background: The risk assessment for outcomes of older people undergoing cardiac surgery employ scales such as the Euro?Score II, and STS (Society for Thoracic Surgeons), which use clinical and laboratory data. Some studies have suggested a lower accuracy in older patients. Frailty assessment, using functional parameters, has shown promise in this age group. The aim of this study is to compare the validity of risk prediction of Euro?score II, with the Edmonton Frail Scale (EFS), in older patients undergoing elective coronary artery bypass grafting (CABG). Methods: This was a prospective, observational study of a cohort of patients above 60 years scheduled for elective CABG in a single centre. The patients were graded on the Euro?Score II scale and the EFS scales. The primary outcome of 30th day mortality, and the secondary outcome of immediate post?operative complications during hospitalization were recorded. Results: A total of 487 patients were recruited. The mean age was 68 years. Male subjects comprised 81.1% of the study group. Classification of risk as per the EFS placed 76.3 % as low risk, 23.4% as intermediate, and none were considered to be high risk. The EuroScore II classification placed 86% in the intermediate and high risk groups. The AUC in the ROC (receiver operator curve) for the EFS was 0.793 and for the and EuroScoreII it was 0.752. The 30th day mortality threshold fit occurred at 5/6 score for both EuroScore II and EFS. Euroscore? II sensitivity/specificity was 66.7%/75.1% respectively. The EFS had a sensitivity of 66.7% and a specificity of 77.1%. The ROC curves for the secondary outcomes were not significant. Conclusion: Both scales are of modest value in predicting short?term mortality in older patients, and require further refinements for improving clinical decision?making in the individual patient.

Comparison of Early and Mid-Term Outcomes After Classic and Modified Morrow Septal Myectomy in Patients with Hypertrophic Obstructive Cardiomyopathy

ABSTRACT Introduction: The aim of our study is to compare the early and mid-term outcomes of patients with hypertrophic obstructive cardiomyopathy who underwent classic and modified Morrow septal myectomy. Methods: Between 2014 and 2019, 48 patients (24 males; mean age 49.27±16.41 years) who underwent septal myectomy were evaluated. The patients were divided into two groups - those who underwent classic septal myectomy (n=28) and those who underwent modified septal myectomy (n=20). Results: Mitral valve intervention was higher in the classic Morrow group than in the modified Morrow group, but there was no significant difference (P=0.42). Mortality was found to be lower in the modified Morrow group than in the classic Morrow group (P=0.01). In both groups, the mean immediate postoperative gradient was significantly higher than the mean of the 3rd and 12th postoperative months. The preoperative and postoperative gradient difference of the modified Morrow group was significantly higher than of the classic Morrow group (P<0.001). Conclusion: Classic Morrow and modified Morrow procedures are effective methods for reducing left ventricular outflow tract obstruction. The modified Morrow procedure was found to be superior to the classic Morrow procedure in terms of reducing the incidence of mitral valve intervention with the reduction of the left ventricular outflow tract gradient.

Difference Between Cardiopulmonary Bypass Time and Aortic Cross-Clamping Time as a Predictor of Complications After Coronary Artery Bypass Grafting

ABSTRACT Introduction: Along with cardiopulmonary bypass time, aortic cross-clamping time is directly related to the risk of complications after heart surgery. The influence of the time difference between cardiopulmonary bypass and cross-clamping times (TDC-C) remains poorly understood. Objective: To assess the impact of cardiopulmonary bypass time in relation to cross-clamping time on immediate results after coronary artery bypass grafting in the Registro Paulista de Cirurgia Cardiovascular (REPLICCAR) II. Methods: Analysis of 3,090 patients included in REPLICCAR II database was performed. The Society of Thoracic Surgeons outcomes were evaluated (mortality, kidney failure, deep wound infection, reoperation, cerebrovascular accident, and prolonged ventilation time). A cutoff point was adopted, from which the increase of this difference would affect each outcome. Results: After a cutoff point determination, all patients were divided into Group 1 (cardiopulmonary bypass time < 140 min., TDC-C < 30 min.), Group 2 (cardiopulmonary bypass time < 140 min., TDC-C > 30 min.), Group 3 (cardiopulmonary bypass time > 140 min., TDC-C < 30 min.), and Group 4 (cardiopulmonary bypass time > 140 min., TDC-C > 30 min.). After univariate logistic regression, Group 2 showed significant association with reoperation (odds ratio: 1.64, 95% confidence interval: 1.01-2.66), stroke (odds ratio: 3.85, 95% confidence interval: 1.99-7.63), kidney failure (odds ratio: 1.90, 95% confidence interval: 1.32-2.74), and in-hospital mortality (odds ratio: 2.17, 95% confidence interval: 1.30-3.60). Conclusion: TDC-C serves as a predictive factor for complications following coronary artery bypass grafting. We strongly recommend that future studies incorporate this metric to improve the prediction of complications.

Five-Year Follow-Up After Transcatheter Aortic Valve Implantation in Patients with Severe Aortic Stenosis and Concomitant Coronary Artery Disease: A Single-Center Experience

ABSTRACT Introduction: There is no consensus on the impact of coronary artery disease in patients undergoing transcatheter aortic valve implantation. Therefore, the objective of this study was, in a single-center setting, to evaluate the five-year outcome of transcatheter aortic valve implantation patients with or without coronary artery disease. Methods: All transcatheter aortic valve implantation patients between 2009 and 2019 were included and grouped according to the presence or absence of coronary artery disease. The primary endpoint, five-year all-cause mortality, was evaluated using Cox regression adjusted for age, sex, procedure years, and comorbidities. Comorbidities interacting with coronary artery disease were evaluated with interaction tests. In-hospital complications was the secondary endpoint. Results: In total, 176 patients had aortic stenosis and concomitant coronary artery disease, while 170 patients had aortic stenosis only. Mean follow-up was 2.2±1.6 years. There was no difference in the adjusted five-year all-cause mortality between transcatheter aortic valve implantation patients with and without coronary artery disease (hazard ratio 1.00, 95% confidence interval 0.59-1.70, P=0.99). In coronary artery disease patients, impaired renal function, peripheral arterial disease, or ejection fraction < 50% showed a significant interaction effect with higher five-year all-cause mortality. No significant differences in complications between the groups were found. Conclusion: Five-year mortality did not differ between transcatheter aortic valve implantation patients with or without coronary artery disease. However, in patients with coronary artery disease and impaired renal function, peripheral arterial disease, or ejection fraction < 50%, we found significantly higher five-year all-cause mortality.

Caregiver burden, family adaptation, partnership, growth, affection, and resolve, anxiety levels, and perceived social support in relatives of patients with open heart surgery

SUMMARY OBJECTIVE: The aim of this study was to examine the relationship between caregiver burden, family adaptation, partnership, growth, affection, and resolve score, anxiety levels, and the perceived social support of the relatives of patients who had open heart surgery. METHODS: Volunteers among the relatives of patients who had open heart surgery in our cardiovascular surgery clinic and were followed up in the first 3 months were included in the study. The cardiovascular surgeons recorded the sociodemographic data of the relatives of the patients and directed them to a psychiatry clinic for further evaluation. The caregiver burden scale, family adaptation, partnership, growth, affection, and resolve scale, anxiety level scale, and perceived social support scale were applied to the relatives of the patients who participated in the study. RESULTS: Within the scope of the study, a total of 51 individuals, 29.4% (n=15) men and 70.6% (n=36) women, were included in the evaluation. The participants' ages ranged from 32 to 68 years, with an average age of 48 years. There was a statistically significant relationship between the caregiving burden scale score and the scale scores other than age (p<0.05). There was a statistically significant difference in terms of caregiving burden scale score, working status, physical and psychological problems, changes in home life, and changes in family relationships (p<0.05). CONCLUSION: The fact that the need for security and intimacy is related to anxiety and depression can be interpreted as the caregiving problems of the relatives of the patients who think that their patients are safe and feel closer to the intensive care personnel will decrease. Their depression and anxiety levels will also decrease.

Relationship between platelet-related parameters and new-onset atrial fibrillation after coronary bypass surgery

SUMMARY OBJECTIVE: Inflammation plays a key role in the pathogenesis of postoperative atrial fibrillation after coronary artery bypass graft surgery. In this study, we aimed to investigate the changes in mean platelet volume and platelet values during the spring and autumn seasons in patients who underwent isolated coronary artery bypass graft surgery and the possible effect of these occurrences on postoperative atrial fibrillation. METHODS: Consecutive patients who underwent elective isolated coronary bypass surgery at our clinic in the spring and autumn months, between August 2020 and July 2022, were retrospectively included in this study. Variables were evaluated according to the spring and autumn seasons. Patients who did not develop in-hospital postoperative atrial fibrillation were identified as Group 1, and those who did constituted Group 2. RESULTS: A total of 622 patients were included in the study. The patients were divided into two groups: those who were operated on in the spring (n=277, median age=62 years, male gender ratio=77.3%) and those who were operated on in the autumn (n=345, median age=61 years, male gender ratio=81.4%). There was no statistically significant difference between the patients operated on in both seasons in terms of age, gender, hypertension rates, and the frequency of chronic obstructive pulmonary disease. In multivariate analysis, being over 70 years old (OR: 1.934, 95% confidence interval (CI) 1.489-2.995, p<0.001), having a left ventricular ejection fraction below 30% (OR: 1.550, 95%CI 1.190-2.236, p=0.012), and having chronic obstructive pulmonary disease (OR: 1.663, 95%CI 1.339-2.191, p<0.001) were found to be independent predictors in predicting the development of postoperative atrial fibrillation. CONCLUSION: In this study, we first demonstrated that mean platelet volume and platelet mass index values were higher in patients in the autumn months. Additionally, for the first time in the literature, we showed that there is a significant relationship between platelet mass index value and the development of postoperative atrial fibrillation in patients who underwent isolated coronary artery bypass graft.

Association Between Body Mass Index, Obesity, and Clinical Outcomes Following Coronary Artery Bypass Grafting in Brazil: An Analysis of One Year of Follow-up of BYPASS Registry Patients

ABSTRACT Objective: To investigate the association between body mass index (BMI), obesity, clinical outcomes, and mortality following coronary artery bypass grafting (CABG) in Brazil using a large sample with one year of follow-up from the Brazilian Registry of Cardiovascular Surgeries in Adults (or BYPASS) Registry database. Methods: A multicenter cohort-study enrolled 2,589 patients submitted to isolated CABG and divided them into normal weight (BMI 20.0-24.9 kg/m2), overweight (BMI 25.0-29.9 kg/m2), and obesity (BMI > 30.0 kg/m2) groups. Inpatient postoperative outcomes included the most frequently described complications and events. Collected post-discharge outcomes included rehospitalization and mortality rates within 30 days, six months, and one year of follow-up. Results: Sternal wound infections (SWI) rate was higher in obese compared to normal-weight patients (relative risk [RR]=5.89, 95% confidence interval [CI]=2.37-17.82; P=0.001). Rehospitalization rates in six months after discharge were higher in obesity and overweight groups than in normal weight group (χ2=6.03, P=0.049); obese patients presented a 2.2-fold increase in the risk for rehospitalization within six months compared to normal-weight patients (RR=2.16, 95% CI=1.17-4.09; P=0.045). Postoperative complications and mortality rates did not differ among groups during time periods. Conclusion: Obesity increased the risk for SWI, leading to higher rehospitalization rates and need for surgical interventions within six months following CABG. Age, female sex, and diabetes were associated with a higher risk of mortality. The obesity paradox remains controversial since BMI may not be sufficient to assess postoperative risk in light of more complex and dynamic evaluations of body composition and physical fitness.

The Efficacy of Tranexamic Acid in Reducing Perioperative Drainage in Cardiac Surgery with Cardiopulmonary Bypass

ABSTRACT Introduction: Although cardiopulmonary bypass procedures remain a critical treatment option for heart disease, they come with risks, including hemorrhage. Tranexamic acid is known to reduce morbidity and mortality in surgical hemorrhage. Objective: This study aimed to evaluate the efficacy of tranexamic acid, which is routinely used to treat hemorrhage, in decreasing the amount of intraoperative and postoperative drainage. Method: A total of 80 patients who underwent cardiac surgery with cardiopulmonary bypass were included in this retrospective study. Forty patients who received tranexamic acid during the operation were assigned to Group 1, while 40 patients who did not receive tranexamic acid were assigned to Group 2. Patient data were collected from the hospital computer system and/or archive records after applying exclusion criteria, and the data were recorded. Statistical analyses were then performed to compare the data. Results: Age, sex, height, weight, body surface area, flow, and ejection fraction percentages, preoperative hematological parameters, and intraoperative variables (except tranexamic acid) were similar between the groups (P>0.05). However, there were statistically significant differences between the groups in terms of intraoperative (through the heart-lung machine) and postoperative red blood cell transfusion rates, intraoperative and postoperative bleeding drainage amounts, as well as postoperative hematocrit, hemoglobin, platelet, and red blood cell levels (P<0.05). Conclusion: We concluded that intraoperative and postoperative use of tranexamic acid in patients who underwent coronary artery bypass grafting with cardiopulmonary bypass has positive effects on hematological parameters, reducing blood product use, and bleeding drainage amount.

Prediction of Vasoactive-Inotropic Score on Prolonged Mechanical Ventilation in Adult Congenital Heart Disease Patients After Surgical Treatment Combined with Coronary Artery Bypass Grafting

ABSTRACT Introduction: This study aimed to investigate the predictive value of the vasoactive-inotropic score (VIS) at different time points for postoperative prolonged mechanical ventilation (PMV) in adult congenital heart disease patients undergoing surgical treatment combined with coronary artery bypass grafting. Methods: Patients were divided into two groups that developed PMV or not. The propensity score matching method was applied to reduce the effects of confounding factors between the two groups. VIS at different time points (VIS at the end of surgery, VIS6h, VIS12h, and VIS12h max) after surgery were recorded and calculated. The value of VIS in predicting PMV was analyzed by the receiver operating characteristic (ROC) curve, and multivariate logistic regression was used to analyze independent risk factors. Results: Among 250 patients, 52 were in the PMV group, and 198 were in the non-PMV group. PMV rate was 20.8%. After propensity score matching, 94 patients were matched in pairs. At each time point, the area under the ROC curve predicted by VIS for PMV was > 0.500, among which VIS at the end of surgery was the largest (0.805). The optimal cutoff point for VIS of 6.5 could predict PMV with 78.7% sensitivity and 72.3% specificity. VIS at the end of surgery was an independent risk factor for PMV (odds ratio=1.301, 95% confidence interval 1.091~1.551, P<0.01). Conclusion: VIS at the end of surgery is an independent predictor for PMV in patients with adult congenital heart disease surgical treatment combined with coronary artery bypass grafting.