Comparison of del Nido Cardioplegia vs. blood cardioplegia in adult aortic surgery: Is the single-dose cardioplegia technique really advantageous?

BACKGROUND: /objective: The aim of the present study was to compare the operative and early postoperative results of the use of del Nido Cardioplegia solution (dNCS) with traditional blood cardioplegia (BC) in adult aortic surgery. METHODS: A retrospective single-center study was performed on 118 patients who underwent aortic surgery with cardiopulmonary bypass (CPB) between January 2016 and June 2020. Patients were divided in to two groups according to the type of cardioplegia solution used. Cardiac arrest was achieved in Group 1 (n = 65) with traditional BC and in Group 2 (n = 53) with dNCS. Operative and postoperative outcomes of the patients were compared between the two groups. RESULTS: Patient demographic characteristics were similar between the two groups. dNCS group showed significantly lower aortic cross-clamp (ACC) time (73.3 vs. 87.5 min, P = 0.001), cardioplegia volume (1323.9 ± 368.5 vs. 2773.8 ± 453.8 ml, P< 0.001), defibrillation rate (44.4%vs. 69.2%, P = 0.006), drainage amount (412 ± 73.2 vs. 446.9 ± 95.1 ml, P = 0.026) and inotropic support need (37% vs. 55.3%, P = 0.046). Also dNCS group had significantly lower high sensitive troponin I (hsTnI) levels at 6th (203.5 ± 68.6 vs. 275.7 ± 76.2 ng/L, P< 0.001) and 24th (253.1 ± 101 vs. 293.4 ± 80.1 ng/L, P = 0.017) postoperative hours. And dNCS group showed significantly higher hematocrit levels at 6th (25.1 ± 3.2 vs. 22.5 ± 2.5%, P< 0.001) and 24th (25.8 ± 2.7 vs. 24.6 ± 2.8%, P = 0.024) postoperative hours. Times of intensive care unit stay, durations of intuabation and hospital stay times were similar in both groups. There was no significant difference in terms of postoperative ejection fraction values (P = 0.714). CONCLUSION: Compared with conventional BC, dNCS provided significantly shorter ACC times, reduced the need for intraoperative defibrillation, lowered postoperative hsTnI levels with comparable early clinical outcomes for adult patients undergoing aortic surgery. dNCS is a safe and efficient alternative to the traditional BC solution in adult aortic cardiac surgery.

Early Postoperative Results of On-Pump Coronary Endarterectomy: Is Gender a Risk Factor?

BACKGROUND: Coronary endarterectomy (CE) combined with coronary artery bypass grafting (CABG) is an effective but still controversial surgical strategy for the treatment of diffuse coronary artery disease. In this study, we aimed to investigate the impact of gender differences on operative and early postoperative results of patients who underwent CABG with CE. METHODS: This retrospective study included 141 patients who had undergone CE combined with CABG from January 2015 to December 2020, as well as 141 patients without CE as the control group. First, patients with and without CE were compared. Next, patients undergoing CE were divided into 2 groups according to gender (group 1, male patients; group 2, female patients). RESULTS: Of the 141 patients who underwent CE combined with on-pump CABG, 95 (67.3%) were male, and median age was 66 years (range 58 to 71.2). Of the 141 patients who underwent isolated on-pump CABG, 99 (70.2%) were males, and median age was 63 years (range 41 to 80.4). The data for these 2 groups (with and without CE) were compared. Previous percutaneous coronary intervention (PCI), presence of diabetes mellitus, and perfusion time were significantly more common in the CE group. There were 95 patients in group 1, with a median age of 65 years (range 58 to 69), and 46 patients in group 2, with a median age of 66 (64 to 71.2). There were no difference between the groups in terms of age, body mass index, hyperlipidemia, chronic obstructive pulmonary disease, peripheral artery disease, or previous coronary intervention. The need for positive inotropic support and postoperative atrial fibrillation were found to be significantly more common in group 2 (P = .022 and .039, respectively). Defibrillation after releasing the aortic cross clamp was also significantly more common in group 2 (P = .025). CONCLUSION: In our study, the need for defibrillation after aortic cross-clamp releasing in the perioperative period, the need for inotropic support and the incidence of atrial fibrillation in the post-operative period, increased significantly in the female gender. CE can be performed safely in both genders with acceptable mortality and morbidity rates.

The Effects of Aortic Clamping Strategy on Myocardial Protection and Early Postoperative Outcomes During Coronary Artery Bypass Grafting Operations.

BACKGROUND: The purpose of the present study was to compare the effects of two different clamping strategies for the construction of the proximal aortocoronary anastomoses on myocardial protection and postoperative outcomes during coronary artery bypass grafting (CABG) operations. METHODS: In this retrospective study, we examined prospectively collected data of patients who underwent CABG for a 3-year period. Two hundred consecutive patients, who were diagnosed with triple vessel coronary artery disease (CAD), were selected and divided into two groups. In Group 1 (single clamp) (N = 100), venoaortic proximal anastomoses were performed using a single aortic cross-clamp, while in Group 2 (double clamp) (N = 100), proximal anastomoses were performed by using an aortic side clamp. Operative and postoperative outcomes of the patients were compared between the two groups. The serum levels of myocardial damage biomarkers, creatine phosphokinase-MB (CPK-MB), and high sensitive Troponin (hsTnI) results were measured preoperatively, intraoperatively, and postoperatively (6, 12, 24, and 48 hours). RESULTS: Patient demographics and characteristics were similar between the two groups. In Group 1, cross-clamp duration time (65 min versus 49 min; P = .0001) was longer. However, perfusion time (91 min versus 85 min; P = .61) was similar between the two groups. In Group 2, postoperative CK-MB levels were significantly higher intraoperatively (P = .18), 6 hours (P = .22), 24 hours (P = .001), and 48 hours (P = .001) than in Group 1. HsTnI was only significantly higher in Group 2 versus Group 1 at 24 hours (P = .001) and 48 hours (P = .01) postoperatively. Time of intensive care unit stay, duration of extubation, and length of hospital stay were similar in both groups. CONCLUSION: The technique used for proximal anastomosis has a significant effect on perioperative results, especially on myocardial protection.

Can a modified-simplified pulmonary embolism severity index (m-sPESI) be used to predict the need for intensive care in hospitalized COVID-19 patients?

Severe acute respiratory syndrome-associated coronavirus-2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19), which has been considered a pandemic by the World Health Organization (WHO). Clinical manifestations of COVID-19 disease may differ, most cases are mild, but a significant minority of patients may develop moderate to severe respiratory symptoms, with the most severe cases requiring intensive care and/or mechanical ventilatory support. In this study, we aimed to identify validity of our modified scoring system for foreseeing the approach to the COVID-19 patient and the disease, the treatment plan, the severity of morbidity and even the risk of mortality from the clinician's point of view. In this single center study, we examined the patients hospitalized with the diagnosis of COVID-19 between 01/04/2020 and 01/06/2020, of the 228 patients who were between 20 and 90 years of age, and whose polymerase chain reaction (PCR) tests of nasal and pharyngeal swab samples were positive. We evaulated 228 (92 male and 136 female) PCR (+) patients. Univariate analysis showed that advanced age (p < 0.001), hemoglobin (p < 0.001), troponin-I (p < 0.001), C-reactive protein (CRP) (p < 0.001), fibrinogen (p < 0.001), HT (p = 0.01), CAD (p = 0.001), DM (p < 0.001), history of malignancy (p = 0.008), along with m-sPESI scores (p < 0.001) were significantly higher in patients that needed intensive care due to COVID-19 infection. In the multivariable logistic regression analysis, only the m-sPESI score higher than ≥ 2 was found to be highly significant in terms of indicating the need for ICU admission (AUC 0.948; 84.6% sensitivity and 94.6% specificity) (p < 0.001). With an increasing number of hospitalized patients, healthcare providers are confronting a deluge of lab results in the process of caring for COVID-19 patients. It is imperative to identify risk factors for mortality and morbidity development. The modified sPESI scoring system, which we put forward, is successful in predicting the course of the disease at the presentation of the patient with COVID-19 disease and predicting the need for intensive care with high specificity and sensitivity, can detect the need for intensive care with high specificity and sensitivity.

C-Reactive Protein and Neutrophil to Lymphocyte Ratio Values in Predicting Inhospital Death in Patients with Stanford Type A Acute Aortic Dissection.

BACKGROUND: Aortic dissection is a cardiovascular disease with high mortality and morbidity rates. The aim of this study is to investigate the role of C-reactive protein (CRP) and neutrophil-to-lymphocyte ratio (NLR) in predicting in-hospital mortality in patients undergoing emergent surgery for Stanford type A aortic dissection. METHODS: Patients operated for acute Stanford type A aortic dissection between January 2010 and December 2018 were included in the study. Patients without in-hospital mortality were classified as Group 1, and patients with mortality were classified as Group 2. RESULTS: One-hundred-eighteen patients were involved in the study. Patient mean age was 57 ± 11.7 years, and 89 patients (75.4%) were male. Neutrophil-to-lymphocyte ratio (NLR), white blood cell (WBC), neutrophil counts, and C-reactive protein (CRP) values at the time of admission also were found to be high in Group 2 (P = .001, .021, < .001, < .001 respectively). Total perfusion times (TPt), antegrade cerebral perfusion time (ACPt), cross-clamp time (CCt), and intensive care unit (ICU) stay periods significantly were higher in the mortality group (P < .001, < .001, = .01, and < .001, respectively). In receiver-operating characteristic (ROC) curve analysis, a cut-off level of 23 mg/L was determined for CRP levels that predict progression to mortality (area under the curve (AUC): 0.879, P < .001, 75.0% sensitivity and 58.0% specificity). Similarly, a cut-off level of 8.8 was found for NLR that predicts progression to mortality (AUC: 0.835, P < .001, 76.0% sensitivity and 61.0% specificity). CONCLUSION: As a result, we can use CRP and NLR values, which easily can be measured or calculated from blood tests to predict mortality in patients with aortic dissections, which may have serious mortal consequences.

The Relationship between the HATCH Score, Neutrophil to Lymphocyte Ratio and Postoperative Atrial Fibrillation After Off-Pump Coronary Artery Bypass Graft Surgery.

Backround: Postoperative atrial fibrillation (PoAF), the most common arrythmia observed in 18-40% of patients following coronary artery bypass surgery, may cause hemodynamic disturbances and increase embolism risk. The aim of this study was to investigate the relationship of HATCH score with PoAF in patients who underwent off-pump coronary artery bypass grafting (OPCABG) and evaluate the effect of preoperatively calculated neutrophil-to-lymphocyte ratio (NLR) on PoAF. METHODS: Patients who underwent OPCABG between January 2014 and January 2019 were included in the study. Preoperative and postoperative data retrospectively were obtained. Patients who did not develop PoAF during the postoperative hospitalization period constituted Group 1; those who did were classified as Group 2. RESULTS: Ninety-seven patients (69 males and 28 females) with a mean age of 54.4 ± 11.1 years constituted Group 1, and 26 patients (17 males and 9 females) with a mean age of 61±12.6 years constituted Group 2. Significant differences were observed between the 2 groups, in terms of age and HATCH scores (P = .025 and P < .001, respectively). NLR, number of distal anastomoses, intensive care unit (ICU) stay times, and total hospitalization times were significantly higher in Group 2 (P = .021, P = .021, P < .001, P < .001, respectively). HATCH score was identified as an independent predictor of AF development following OPCABG surgery (OR: 2.125, 95 % CI: 1.296-3.482, P = .003). CONCLUSION: In light of our study, HATCH scores of all patients preoperatively may be calculated so that preventive precautions are taken for high-risk patients.

Remote Targets for Right Coronary Artery Bypass: Distal Trunk or Posterior Descending Artery Grafting.

BACKGROUND: Choosing a good anastomotic site is crucial during surgical revascularization of the right coronary artery (RCA) system. In many instances of distal and/or sequential main trunk disease, either the right posterior descending coronary artery (RPDA) or distal part of the right main coronary artery (DRCA) is preferred as the target vessel. In this article, the saphenous vein graft (SVG) patency is compared between these two main targets in the long term. MATERIALS AND METHODS: Postoperative control coronary angiograms were obtained and assessed from 452 patients undergoing conventional on-pump coronary artery bypass grafting with either a DRCA (n = 305) or a RPDA graft (n = 147) after an average postoperative period of 5.8 ± 4.3 years (range: 2 months-20 years; a total of 2,627 patient-years). RESULTS: The overall graft patency was 60%. The 15-year patency rate was better for the DRCA grafts than that for the RPDA grafts (32 ± 5% vs. 19 ± 6%, respectively; p = 0.001), irrespective of target vessel caliber. Other factors adversely influencing the long-term graft patency were poor target vessel quality (p = 0.002) and hypercholesterolemia (p = 0.01). On the other hand, target vessel diameter, diabetes mellitus, hypertension, chronic renal insufficiency, obesity, peripheral arterial disease, or SVG quality were not associated with poor long-term graft patency in these patients having distal-type RCA disease. CONCLUSIONS: In the presence of distal and/or sequential right coronary disease, DRCA may be the target vessel of choice for bypass grafting, rather than the RPDA, mainly for better long-term SVG patency rates in this location.

Deep sternal wound infection after coronary artery bypass surgery: management and risk factor analysis for mortality.

BACKGROUND: Deep sternal wound infection is a life-threatening complication after cardiac surgery. The aim of this study was to investigate the factors leading to mortality, and to explore wound management techniques on deep sternal wound infection after coronary artery bypass surgery. METHODS: Between 2008 and 2013, 58 patients with deep sternal wound infection were analyzed. Risk factors for mortality and morbidity including age, gender, body mass index, smoking status, chronic renal failure, hypertension, diabetes, and treatment choice were investigated. RESULTS: In this study, 19 patients (32.7%) were treated by primary surgical closure (PSC), and 39 patients (67.3%) were treated by delayed surgical closure following a vacuum-assisted closure system (VAC). Preoperative patient characteristics were similar between the groups. Fourteen patients (24.1%) died in the postoperative first month. The mortality rate and mean duration of hospitalization in the PSC group was higher than in the VAC group (P = .026, P = .034). Significant risk factors for mortality were additional operation, diabetes mellitus, and a high level of EuroSCORE. CONCLUSIONS: Delayed surgical closure following VAC therapy may be associated with shorter hospitalization and lower mortality in patients with deep sternal wound infection. Additional operation, diabetes mellitus, and a high level of EuroSCORE were associated with mortality.

Preoperative usages of levosimendan in patients undergoing coronary artery bypass grafting.

OBJECTIVES: Levosimendan (LS) is a new inotropic drug which belongs to the group of drugs known as calcium sensitizers. It is different from other inotropic agents by its inotropic and vasodilatory actions without an increase in myocardial oxygen consumption and considered as a good choice in high-risk patients undergoing cardiac surgery. We aimed to investigate the proper time of the administration and the effect of prophylactic usage of LS in patients with low left ventricular ejection fraction (LVEF) undergoing coronary artery bypass grafting (CABG). METHODS: Forty patients who underwent isolated CABG with LVEF) less than 30% were evaluated retrospectively. Patients were divided into 3 groups according to the induction time of LS during different phases of the operation and compared to a non-LS control group. LS infusion (0.2 µg/kg/min) was applied 12 hours before the operation in Group 1 (G1) (n=10), after the induction of anaesthesia in Group 2 (G2) (n=10) and during the pump removal period in Group 3 (G3) (n=10) and non-LS control group 4 (G4) (n=10). Demographic data, operative characteristics, hemodynamic parameters and serum lactate, troponin, creatinine levels were compared between groups before and after LS treatment during pre and postoperative period. Data were evaluated by Fisher exact, Kruskal-Wallis, Mann-Whitney U, Chi-square and Wilcoxon rank tests. RESULTS: We found that the duration of tracheal intubation, the intensive care unit stay and the hospital stay were significantly decreased in G1 and G2 when compared to the patients in G3 and G4. During postoperative period, in G1 and G2 one (10%) patient from each required intraaortic balloon pump (IABP), while in G3 two (20%) patients and in G4 five (50%) patients required IABP. Cardiac index (CI) was significantly increased in all groups from baseline to intensive care unit (ICU)1h and ICU24h. When groups compared each other significant increase was found in G1-G4 (p=0.001) and G2-G4 (p=0.007) at ICU1h. There was a significant increase in % EF especially in G1-G4 (p=0.011) and G2-G4 (p=0.007) at ICU1h. Systemic vascular resistance index significantly decreased in G1 and G2 in comparison to G3 and G4. However there was no significant decrease in pulmonary capillary wedge pressure of all 4 groups before and after LS. There was a significant decrease in mean pulmonary arterial pressure in G1 and G2 according to G4. Compared with the other groups preoperatively LS-treated patients (G1 and G2) had lower postoperative troponin I, serum lactate and creatinine concentrations. CONCLUSIONS: Our study shows that the elective preoperative initiation of LS especially 12 hours before the operation onset is associated with better improvement on cardiac functions as well as with lower mortality and complication rates, lower use of additional inotropic and vasopressor drugs, less need for intra-aortic balloon pump support and shorter length of stay in the ICU in patients with high perioperative risk or compromised left ventricular function. As a result, patients who received an infusion of LS 12 hours before surgery showed an evidence of less myocardial damage which suggested the preconditioning effect of the drug.

Surgical embolectomy for acute massive pulmonary embolism.

OBJECTIVE: Acute massive pulmonary embolism (PE) is associated with significant mortality rate despite diagnostic and therapeutic advances. The aim of this study was to analyze our clinical outcomes of patients with acute massive PE who underwent emergency surgical pulmonary embolectomy. METHODS: This retrospective study included 13 consecutive patients undergoing emergency surgical pulmonary embolectomy for acute massive PE at our institution from March 2000 to November 2013. The medical records of all patients were reviewed for demograhic and preoperative data and postoperative outcomes. All patients presented with cardiogenic shock with severe right ventricular dysfunction confirmed by echocardiography, where 4 (30.8%) of the patients experienced cardiac arrest requiring cardiopulmonary resuscitation before surgery. RESULTS: The mean age of patients was 61.8 ± 14 years (range, 38 to 82 years) with 8 (61.5%) males. The most common risk factors for PE was the history of prior deep venous thrombosis (n = 9, 69.2%). There were 3 (23.1%) in-hospital deaths including operative mortality of 7.7% (n = 1). Ten (76.9%) patients survived and were discharged from the hospital. The mean follow-up was 25 months; follow-up was 100% complete in surviving patients. There was one case (7.7%) of late death 12 months after surgery due to renal carcinoma. Postoperative echocardiographic pressure measurements demonstrated a significant reduction (P < 0.001). At final follow-up, all patients were in New York Heart Association class I and no readmission for a recurrent of PE was observed. CONCLUSION: Surgical pulmonary embolectomy is a reasonable option and could be performed with acceptable results, if it is performed early in patients with acute massive PE who have not reached the profound cardiogenic shock or cardiac arrest.

Comparing the effectiveness of neutrophil-lymphocyte ratio as a mortality predictor on middle and advanced age coronary artery bypass graft patients.

OBJECTIVE: In this study, the effect of neutrophil-lymphocyte ratio (NLR), which is a recently developed inflammatory parameter, as an early stage mortality predictive marker on coronary artery bypass (CABG) patients of various age groups was examined. METHODS: Seventy eight patients under the age of 45 (Group 1) and 80 patients who were older than 45 (Group 2) randomly chosen from the patients who underwent isolated CABG surgery, were examined. The preoperative characteristics and NLRs were noted. The primary end point of the study was determined as all-cause in- hospital mortality. RESULTS: Mortality was observed in 2 patients in Group 1 and 11 patients in Group 2. The threshold value of NLR was 2,47 in the Receiver Operating Characteristic (ROC) curve in Group 1 and there wasn't any significant correlation between preoperative NLR and mortality rates in the patients whose NLRs were above this curve. The threshold value was determined as 4.07 in Group 2 and there was a significant relation between preoperative NLR and mortality (p<0,01). No relation was found between NLR and mortality when all the examined patients were considered (p>0.05). CONCLUSION: NLR that can be easily calculated, can be used as a mortality predictor in the patients of advanced age who will undergo isolated CABG procedure.

Acute mesenteric ischemia after cardiac surgery: an analysis of 52 patients.

OBJECTIVE: Acute mesenteric ischemia (AMI) is a rare but serious complication after cardiac surgery. The aim of this retrospective study was to evaluate the incidence, outcome, and perioperative risk factors of AMI in the patients undergoing elective cardiac surgery. METHODS: From January 2005 to May 2013, all patients who underwent cardiac surgery were screened for participation, and patients with registered gastrointestinal complications were retrospectively reviewed. Univariate analyses were performed. RESULTS: The study included 6013 patients, of which 52 (0.86%) patients suffered from AMI, 35 (67%) of whom died. The control group (150 patients) was randomly chosen from among cases undergoing cardiopulmonary bypass (CPB). Preoperative parameters including age (P = 0.03), renal insufficiency (P = 0.004), peripheral vascular disease (P = 0.04), preoperative inotropic support (P < 0.001), poor left ventricular ejection fraction (P = 0.002), cardiogenic shock (P = 0.003), and preoperative intra-aortic balloon pump (IABP) support (P = 0.05) revealed significantly higher levels in the AMI group. Among intra- and postoperative parameters, CPB time (P < 0.001), dialysis (P = 0.04), inotropic support (P = 0.007), prolonged ventilator time (P < 0.001), and IABP support (P = 0.007) appeared significantly higher in the AMI group than the control group. CONCLUSIONS: Prompt diagnosis and early treatment should be initiated as early as possible in any patient suspected of AMI, leading to dramatic reduction in the mortality rate.