Early postoperative hemodynamic instability after heart transplantation - incidence and metabolic indicators.

BACKGROUND: Primary graft dysfunction (PGD) is the main cause of death in the first 30 days after heart transplantation (HTX), accounting for approximately 40% of mortality. The study's primary aim was to assess the incidence of PGD, following the International Society for Heart and Lung Transplantation consensus, and to compare it with the incidence of significant postoperative hypotension despite administration of high-dose inotropes and vasoconstrictors. The secondary aim of the study was to determine changes in biochemical markers that accompany the phenomenon. METHODS: Forty-five patients who underwent HTX between 2010 and 2015 were enrolled in this study, and detailed hemodynamic and metabolic data from the first 48 postoperative hours were collected and analyzed. Hemodynamic instability was defined as significant postoperative hypotension (mean arterial pressure (MAP) < 60 mmHg) combined with a high inotrope score (> 10). Data for long-term mortality were obtained from the population registration office. RESULTS: PGD incidence was relatively low (17.8%); however, hemodynamic instability was common (40%). Among unstable patients, MAP was insufficient for end-organ perfusion (51.4 ± 9.5 mmHg) but no decrease in left ventricular function was observed (cardiac index, 2.65 ± 0.6 l/min/m2; left ventricular ejection fraction, 52.9 ± 15.5%). Within this group, mean systemic vascular resistance index (961 ± 288 dyn*s*m2/cm5) was low despite receiving high doses of vasoactive agent (norepinephrine 0.21 (0.06-0.27) µg/kg/min during first 24 h postoperatively and 0.21 (0.01-0.27) µg/kg/min during next 24 h postoperatively). After HTX, serum lactate levels were initially significantly higher in patients with hemodynamic instability (p = 0.002); however, impaired lactate clearance was not observed (p = 0.366), and lactate levels normalized within the first 24 h postoperatively. Postoperative hemodynamic instability altered the long-term outcome and increased 5-year mortality after HTX (p = 0.034). CONCLUSIONS: Hemodynamic instability is a more common phenomenon than PGD. Only early postoperative serum lactate levels correspond with hemodynamic instability following HTX. Postoperative hemodynamic instability is associated with poor long-term survival among HTX recipients.

One-day, sequential carotid artery stenting followed by cardiac surgery in patients with severe carotid and cardiac disease.

Optimal management of patients with internal carotid artery (ICA) stenosis concurrent with severe cardiac disease remains undefined. The aim of this study is to evaluate the safety and feasibility of the one-day, sequential approach by carotid artery stenting (CAS) immediately followed by cardiac surgery. The study included 70 consecutive patients with symptomatic > 50% or ⩾ 80% asymptomatic ICA stenosis coexisting with severe coronary/valve disease, who underwent one-day, sequential CAS + cardiac surgery. The majority of patients (85.7%) had CSS class III or IV angina and 10% had non-ST elevation myocardial infarction. The EuroSCORE II risk was 2.4% (IQR 1.69-3.19%). All CAS procedures were performed according to the 'tailored' algorithm with a substantial use of proximal neuroprotection devices of 44.3%. Closed-cell (75.7%) and mesh-covered (18.6%) stents were implanted in most cases. The majority of patients underwent isolated coronary artery bypass grafting (88.6%) or isolated valve replacement (7.1%). No major adverse cardiac and cerebrovascular events (MACCE) occurred at the CAS stage. There were three (4.3%) perioperative MACCE: one myocardial infarction and two deaths. All MACCE were related to cardiac surgery and were due to the high surgical risk profile of the patients. Up to 30 days, no further MACCE were observed. No perioperative or 30-day neurological complications occurred. In this patient series, one-day, sequential CAS and cardiac surgery was relatively safe and did not result in neurological complications. Thus, a strategy of preoperative CAS could be considered for patients with severe or symptomatic ICA stenosis who require urgent cardiac surgery.

Ten-year follow-up after combined coronary artery bypass grafting and transmyocardial laser revascularization in patients with disseminated coronary atherosclerosis.

Coronary artery disease involving heavily calcified lesions has been associated with worse short- and long-term outcomes including increased mortality. This paper aims to evaluate long-term survival benefit when CABG + transmyocardial laser revascularization (TMLR) are performed on the hearts of patients with disseminated coronary atherosclerosis (DCA). This novel retrospective study was conducted between 1997 and 2002 and followed 86 patients with ischemic heart disease and severe DCA who underwent TMLR using a Holmium:YAG laser and/or CABG. There were 46 patients who had CABG plus TMLR on at least one heart wall ("combined therapy group") and 40 patients who had CABG or TMLR separately on at least one heart wall ("single therapy group"). For the whole group, actuarial survival at 10 years was 78.3% in the combined group compared to 72.5% in the single therapy group (p = 0.535). Ten-year survival in the combined vs. single therapy group for the anterior heart walls was 100 vs. 72.2% (p = 0.027). For the lateral and posterior heart walls were 73.7 vs. 73.3% (p = 0.97) and 84.2 vs. 72% (p = 0.27), respectively. Kaplan-Meier survival analysis showed benefit only for the anterior heart wall (F Cox test, p = 0.103). Single therapy procedures on all heart walls (odds ratio 1.736, p = 0.264) or on the anterior heart wall only (odds ratio 3.286, p = 0.279) were found to be predictors of 10-year late mortality. Combined therapy (TMLR + CABG) provides benefit for perioperative mortality and long-term survival only when provided on the anterior heart wall. For patients with disseminated coronary atherosclerosis, cardiac mortality was found to be increased when followed up 6 years later, regardless of the therapy applied.

Minimally invasive direct coronary artery bypass (MIDCAB) ­ safety assessment in own material.

Introduction: Minimally invasive direct coronary artery bypass (MIDCAB) allows achieving similar safety and efficacy, with markedly reduced post-operative length of stay when compared to conventional surgical revascularization. Despite promising results, a small number of minimally invasive procedures are performed in Poland. The aim of the study is to assess short- and long-term outcome of MIDCAB revascularization in order to evaluate the safety of the procedure. Materials and Methods: Retrospective observational study analyzing 38 consecutive patients who underwent MIDCAB procedure between 2014 to 2016 in the Department of Cardiovascular Surgery and Transplantology at the John Paul II Hospital, Kraków. Perioperative data was obtained from patient medical records and the median follow-up period valued 17.3 months. Results: No postoperative deaths and only 1 case of postoperative myocardial infarction were observed. Throughout the follow-up period, the survival rate and freedom from MACCE rate valued 100%, with only 1 case of repeated revascularization. Conclusions: Minimally invasive revascularization is a safe procedure which can be performed with excellent short- and long-term outcome in low-risk patients.

Long-term follow-up after Holmium:YAG laser revascularization combined with autologous bone marrow derived stem cells implantation.

Background: Coronary artery disease is a major cause of death worldwide. Despite different standard revascularization options, significant number of patients remains not suitable for any treatment. The aim of the study was to evaluate long-term outcome of patients with diffuse coronary artery disease, treated with autologous stem cells injections combined with transmyocardial laser revascularization. Material and Methods: 9 patients underwent Holmium:YAG laser revascularization and autologous bone marrow derived stem cells implantation between 2007 and 2009 in the Department of Cardiovascular Surgery and Transplantology, John Paul II Hospital, Kraków and were subsequently followed up in 2015. Results: The mean follow-up period was 73 months. The mean CCS class significantly improved (1.4±0.5 vs 3.3±1.0; p<0.001) and cardiac related hospitalizations significantly decreased (1.1±0.8 vs 3.1±2.1; p<0.001). One death due to heart failure was observed. The mean LVEF increased from 38% to 42% (p>0.05). Conclusions: Clinical status improvement was observed with low mortality rate in the long-term follow-up. No new regional wall motion abnormalities were observed, and the increase of global ejection fraction was noted.

Coronary Artery Disease in Young Adults: Who Needs Surgical Revascularization? A Retrospective Cohort Study.

BACKGROUND: Coronary artery disease (CAD) is a major cause of death and disability in developed countries. Despite the fact that prevalence accrues with age, an increasing number of young patients suffering from CAD is being observed worldwide. The aim of this study is to describe the population of young adults suffering from CAD and requiring coronary artery bypass grafting (CABG), and to assess early outcomes after the procedure. METHODS: A retrospective cohort study analyzed 190 consecutive patients aged ≤50 years old that underwent CABG between 2010 and 2014. Baseline characteristics and operative data were presented in the study. Postoperative complications, such as major adverse cardiac and cardiovascular events (MACCE), prolonged mechanical ventilation (>72 hours), bleeding requiring reexploration, sternal dehiscence, and others were assessed. RESULTS: A population comprising mostly overweight or obese males with a mean age of 46 ± 4.1 years was analyzed. Patients suffered mostly from three-vessel disease (81%), hypertension (74.7%), and had previous history of myocardial infarction (MI) (60%). The majority of patients had normal left ventricle ejection fraction (LVEF) (83.1%). 22.6% of cases were emergent procedures. Perioperative mortality was low (1%) and overall MACCE rate stood at 2.6%. Emergent surgery was associated with a higher incidence of postoperative complications (P = .007). The number of diseased vessels, LVEF, and CCS/NYHA class-on-admission was not associated with a higher incidence of postoperative complications (P > .05 for all). CONCLUSION: CAD in young patients remains an issue described insufficiently in the literature. Among our study cohort of younger patients undergoing CABG, the majority of the patients had multivessel disease and were slightly symptomatic with normal LVEF. Although the postoperative complication rate was low, the percentage of emergent surgeries was alarmingly high in this population. Consistent with the literature, we highlight the importance of CAD screening in the young population to detect subclinical disease, which might be treated therapeutically or operated electively.

Total arterial myocardial revascularization in patients over 70 years old - a new trend in coronary surgery in elderly.

Introduction: In modern society, civilization has extended the life expectancy of developed nations. The demographic analysis of Eurostat (European Statistical Office) predicts the increase of the population over 70 years old in Western Europe from 15.2% reported in 1995 to 19.5% in 2020. Undoubtedly, the incidence of cardiovascular diseases increases with age. Nowadays, they are the most commonly diagnosed disease, as well as the most common cause of death in patients over 70 years old. Therefore, a significant increase of surgeries in elderly patients, reaching up to 30%, is reported in cardiac surgery. As changes in operating technique are being observed, better outcomes of surgeries in elderly patients are being noted. With over 10 years of observation, more beneficial results are noted for arterial revascularization with usage of arterial grafts compared with venous ones. The aim of the study is to evaluate the safety of harvesting both internal mammary arteries and radial artery in CABG in patients over 70 years old and to analyze the incidence of major adverse cardiac and cerebrovascular events (MACCE) and other postoperative complications in this cohort. Materials and Methods: In a retrospective observational study we analyzed 101 cases, where TAMR was applied in patients aged 70 yo or older between 2003 to 2009 in the Department of Cardiovascular Surgery and Transplantology, John Paul II Hospital, Kraków. Exclusion criteria included among others low left ventricular ejection fraction, high Euroscore, and accompanying valvular disease. Data was obtained from patient medical records. Baseline characteristics, intraoperative data and postoperative complications were assessed. All surgeries were performed in extracorporeal circulation and via median sternotomy. Results: In the study cohort, most patients suffered from multi-vessel disease (65.3%), and all required at least 2 bypass grafts. Left internal mammary artery (LIMA) was used in all cases, right internal mammary artery (RIMA) in 30.7%, and radial artery (RA) in 95% of surgeries. In 6.9% of individuals additional transmyocardial laser revascularization was applied due to disseminated coronary artery disease. The in-hospital mortality stood at 1.98%, however there were no cardiac deaths reported. The postoperative MACCE incidence was 6.94% due to 6 cases of myocardial infarction, and 1 case of acute stroke. The in-hospital mortality was 1.98%. Other postoperative complications occurred as follows: rethoracotomy (2.9%), blood products transfusions (69.3%), prolonged mechanical ventilation (9.9%), atrial fibrillation (15.8%), deep wound infection (3.96%), sternal dehiscence (1.98%). Conclusions: Technique of TAMR in coronary artery bypass grafting is a safe method in low-risk patients over 70 years old and can be performed with good short-term outcome. Further evaluation analyzing the long-term benefits in elderly patients of TAMR is warranted.

Problems and challenges in the early period of rehabilitating patients with severe hypothermia treated using ecmo support.

The objectives: To show and discuss the most frequent functional problems encountered in patients who underwent extracorporeal membrane oxygenation (ECMO) treatment after severe hypothermia and point out appropriate physiotherapy procedures used in order to diminish the effects of hypothermia on the human organism. It is necessary to look for effective physiotherapeutic solutions, especially that the number of scientific publications on the subject is very limited. DESIGN: Retrospective analysis Setting: Severe Accidental Hypothermia Center ( medical intensive care unit of a university hospital) Patients or participants: Nineteen patients who were qualified for ECMO in Severe Accidental Hypothermia Center Intervention: At least three times a day rehabilitation session (physiotherapeutic procedures adequate to patient problems) and interventions in case of emergency. Physiotherapy staff in the Center has regular work hours and night duties, so can provide round-the clock rehabilitation treatment adjusted to the dynamically changing clinical picture of the patient. METHODS AND RESULTS: We analyzed the group of patients who were treated in our center from July 2013 to March 2015. The degree of functional complications increased with the duration and extent of hypothermia and time of conducting extracorporeal therapy. The frequent problems were: respiratory failure due to sputum retention (25%) or sternum fracture due to resuscitation (25%), lower and upper extremity muscle weakening (75%), peroneal nerve palsy (25%). In the first period of hospitalization all of patients have generalised edema. As a result of the treatment and rehabilitation, full stabilization of the cardiovascular - respiratory system and full recovery of neurological functions was achieved in 14 persons (73.68%). CONCLUSION: early and round-the clock physiotherapy treatment adequate to appearing patient's syndromes seems crucial for his physical and mental recovery after severe accidental hypothermia treated by ECMO support. In order to attain therapeutic success, it is indispensable to work in experienced, multidisciplinary team.

Problems and challenges in the early period of rehabilitating patients with severe hypothermia treated using ecmo support.

The objectives: To show and discuss the most frequent functional problems encountered in patients who underwent extracorporeal membrane oxygenation (ECMO) treatment after severe hypothermia and point out appropriate physiotherapy procedures used in order to diminish the effects of hypothermia on the human organism. It is necessary to look for effective physiotherapeutic solutions, especially that the number of scientific publications on the subject is very limited. DESIGN: Retrospective analysis Setting: Severe Accidental Hypothermia Center ( medical intensive care unit of a university hospital) Patients or participants: Nineteen patients who were qualified for ECMO in Severe Accidental Hypothermia Center Intervention: At least three times a day rehabilitation session (physiotherapeutic procedures adequate to patient problems) and interventions in case of emergency. Physiotherapy staff in the Center has regular work hours and night duties, so can provide round-the clock rehabilitation treatment adjusted to the dynamically changing clinical picture of the patient. METHODS AND RESULTS: We analyzed the group of patients who were treated in our center from July 2013 to March 2015. The degree of functional complications increased with the duration and extent of hypothermia and time of conducting extracorporeal therapy. The frequent problems were: respiratory failure due to sputum retention (25%) or sternum fracture due to resuscitation (25%), lower and upper extremity muscle weakening (75%), peroneal nerve palsy (25%). In the first period of hospitalization all of patients have generalised edema. As a result of the treatment and rehabilitation, full stabilization of the cardiovascular - respiratory system and full recovery of neurological functions was achieved in 14 persons (73.68%). CONCLUSION: early and round-the clock physiotherapy treatment adequate to appearing patient's syndromes seems crucial for his physical and mental recovery after severe accidental hypothermia treated by ECMO support. In order to attain therapeutic success, it is indispensable to work in experienced, multidisciplinary team.

In-hospital mortality in cardiac surgery patients after readmission to the intensive care unit: a single-center experience with 10,992 patients.

OBJECTIVES: Determine if readmission to the intensive care unit (ICU) after cardiac surgery procedures is associated with increased mortality. DESIGN: This was a retrospective non-randomized study to evaluate the cause of readmission and mortality rate in patients readmitted to the ICU after cardiac surgery and to compare the clinical variables of patients readmitted to the ICU who died and those who survived. SETTING: The study was performed in a single university hospital. PARTICIPANTS: This was an analysis of 10,992 consecutive adult patients. Readmission rate to the ICU, mortality rate, the reason for readmission to the ICU, type of surgery, length of stay, cause of mortality, and day of the week of ICU readmission were analyzed. INTERVENTIONS: All patients underwent cardiac surgery at a single center and were discharged after primary stay from the ICU. MEASUREMENTS AND MAIN RESULTS: A total of 197 (1,8%) of 10,992 patients were readmitted to the ICU. In-hospital mortality rate for patients readmitted and not readmitted to the ICU was 23.9% and 4.7%, respectively. The main causes of ICU readmission were cardiac (40%) and respiratory (37%) complications. The mortality rate in readmitted patients who underwent coronary artery bypass graft (CABG) or valve surgery was 26% and 19%, respectively. CONCLUSIONS: Patient readmission to the ICU following cardiac surgery was associated with a 5-fold increase in hospital mortality rate compared to non-readmitted patients. The highest mortality rate was observed among readmitted patients who underwent CABG. Older age, previous myocardial infarction, and initial long length of stay in the post-operative ward were independent risk factors for death after readmission to the ICU.

Oral hygiene in population of southern Poland.

AIMS: Proper oral hygiene is an important element in the prevention of many diseases. Oral hygiene habits different depending on the place of residence, age and public awareness. The aim of the study was assessment of oral hygiene habits in a group of patients admitted for cardiac surgery. MATERIAL AND METHODS: The database has been made on the basis of anonymous questionnaires filled by all participants. The study included 643 patients admitted to the hospital for surgical treatment of acquired heart disease. We divided patients into 3 groups depending on age, place of residence and type of heart disease. RESULTS: More than 30% of patients brush their teeth once a day or less. Over 40% of all respondents do not attend for regular visits to the dentist. Most patients, who do not brush teeth or dentures were in group > 70 years old (6%) and live in the countryside. Patients in a big city perform control visit the most often (64%) and this group had the largest proportion of pa- tients who declared that the visits take place once a year or more (46%). CONCLUSIONS: Habits of proper oral hygiene among patients scheduled for cardiac surgery are at high level. 9 out of 10 patients declares daily teeth brushing. Among patients living in the country, 46% do not use regular visits and only 29% go to the dentist once a year or more often. Education campaigns about influence of the improper oral cavity hygiene should be initiated.

The impact of transcatheter aortic valve implantation (TAVI) on mitral regurgitation - a single center study.

BACKGROUND: The coexistence of mitral regurgitation (MR) and severe aortic stenosis (AS) has been associated with worse outcomes in patients undergoing transcatheter aortic valve implantation (TAVI). Herein, the aim was to assess the etiology and degree of MR in an unselected TAVI population and investigate the impact of MR reduction at mid-term follow-up. METHODS: Patients subjected to TAVI as a treatment for severe AS in a single center were retrospectively analyzed. The primary endpoint was the MR reduction after TAVI. The secondary endpoint was all-cause mortality and heart failure hospitalization at a 3-year follow-up. RESULTS: Patients undergoing TAVI (n = 283) in the years 2017-2019 were screened for the presence of hemodynamically significant MR. Sixty-nine subjects (24.4%) with severe (16, 23.2%) and moderate (53, 76.8%) MR were included. The primary MR was predominant (39 subjects, 56.5%). The median age of the patients was 82 years. MR improved in 25 patients (36.2%, p < 0.001). Baseline severe MR was more prone to reduce (8 subjects, 50%) than moderate (17 subjects, 32.1%, p = 0.04). The primary MR improved in 14 patients (35.9%), while secondary in 11 patients (36.7%, p = 1). Patients showing MR reduction had lower mortality (8 vs. 29.55%, p = 0.047) and were less frequently hospitalized (20 vs. 45.45%, p = 0.03) at 3-year follow-up. CONCLUSIONS: Hemodynamically significant MR improves after TAVI regardless of its etiology. Moreover, MR reduction after TAVI is associated with better clinical outcomes.

Computed tomography guided tailored approach to transfemoral access in patients undergoing transcatheter aortic valve implantation.

BACKGROUND: Transfemoral approach (TFA) is the most common access route for transcatheter aortic valve implantation (TAVI). Percutaneous femoral access (PA) is preferred over the surgical approach (SA), however, may be associated with a higher risk of access site complications. Thus, we aimed to assess outcomes of computed tomography-guided tailored approach to percutaneous and surgical TFA in patients undergoing TAVI. METHODS: We evaluated data of 158 patients, who underwent TAVI via femoral route between January 2017 and December 2018. In the PA group, vascular closure was performed with the use of two percutaneous suture devices and an additional mechanical seal device. We compared complications rate and outcomes. RESULTS: Of the 158 patients (92%; mean age 79.6 years, 60.8% female), in 92 (61%) patients PA was performed and in 66 (39%) patients SA was used. Median (interquartile range) radiation exposure as well as contrast volume dose was higher in the PA group compared to the SA group 614.0 (410.0; 1104.0) mGy vs. 405 (240.5; 658.0) mGy (p < 0.001) and 150.0 (120.0; 180.7) mL vs. 130.0 (100.0; 160.0) mL (p = 0.04), respectively. Bleeding complications were similar in the PA group 11 (12.2%) compared to 5 (8.62%) in the SA group (p = 0.48). Median length of hospital stay was also similar in the PA and the SA group 6.00 (5.00; 8.00) days vs. 6.00 (4.00; 8.00) days, respectively (p = 0.31). CONCLUSIONS: Computed tomography-guided PA in TAVI may provide comparable procedural outcomes compared to the SA, despite a higher radiation dose and the use of contrast dye, while being less invasive.

Endovascular carotid revascularization under open-chest extracorporeal circulation combined with cardiac surgery in unstable patients at increased risk of carotid-related stroke: SIMultaneous urgent cardiac surgery and MicroNet-covered stent carotid revascularization in extreme-risk patients-SIMGUARD Study.

BACKGROUND: In patients at urgent need for cardiac surgery coexisting with increased-stroke-risk carotid stenosis, any staged intervention increases the risk of complications from the primarily unaddressed pathology. In this challenging cohort, we assessed safety and feasibility of endovascular carotid revascularization under open-chest extracorporeal circulation (ECC) combined with cardiac surgery (hybrid-room true simultaneous treatment). METHODS: Per-protocol (PP), after general anesthesia induction, chest-opening and ECC stand-by installation, carotid stenting (CAS) was performed (femoral/radial or direct carotid access) with ad-hoc/on-hand switch to ECC cardiac surgery. RESULTS: Over 78 months, 60 patients (70.7±6.9years, 85% male, all American Society of Anesthesiology grade IV) were enrolled. All were at increased carotid-related stroke risk (ipsilateral recent stroke/transient ischemick attack, asymptomatic cerebral infarct, increased-risk lesion morphology, bilateral severe stenosis). Majority of study procedures involved CAS+coronary bypass surgery or CAS+valve replacement±coronary bypass. 45 (75%) patients were PP- and 15 (25%) not-PP (NPP-) managed (context therapy). CAS was 100% neuroprotected (transient flow reversal-64.4%, filters-35.6%) and employed micronet-covered plaque-sequestrating stents with routine post-dilatation optimization/embedding. 4 deaths (6.7%) and 7 strokes (11.7%) occurred by 30-days. Despite CAS+surgery performed on aspirin and unfractionated heparin-only (delayed clopidogrel-loading), no thrombosis occurred in the stented arteries, and 30-days stent patency was 100%. NPP-management significantly increased the risk of death/ipsilateral stroke (OR 38.5; P<0.001) and death/any stroke (OR 12.3; P=0.002) by 30-days. CONCLUSIONS: In cardiac unstable patients at increased carotid-related stroke risk who require urgent cardiac surgery, simultaneous cardiac surgery and CAS with micronet-covered stent lesion sequestration is feasible and safe and shows efficacy in minimizing stroke risk. Larger-scale, multicentric evaluation is warranted. (SIMGUARD NCT04973579).

[Prospective assessment of circulatory sufficiency of the patients after 3F equine pericardial stentless bioprosthesis replacement]. / Prospektywna ocena zmiany wydolnosci serca u pacjentów z wszczepiona bezstentowa, biologiczna zastawka aortalna wykonana z osierdzia konskiego.

INTRODUCTION: During years more and more advanced Technologies are used for treatment of severe aortic stenosis. One of them is equine pericardial stentless bioprothesis. AIM OF THE STUDY: the aim of the study was prospective assessment of circulatory sufficiency of the patients after 3F equine pericardial stentless bioprothesis replacement (ATS-Medtronic, Inc, Minneapolis, USA). PATIENTS AND METHODS: Patients qualified to valve replacement were qualified to the study. The procedures were performed in general anesthesia and medial thoracothomy. The New York Heart Association (NYHA) scale was analyzed to estimate clinical results of the procedures. RESULTS: 45 patients (10 women and 35 men) aged 23-78 (mean 54 (+/- SD 12.7) were included into the study. Patients were observed during one-year follow up (FU). At the baseline three pts had NYHA II stage, 35 - III and 7 - IV. There was no pts in NYHA I stage. After 3-6 months FU 34 pts were at NYHA I stage (79%) and 9 at NYHA II. After 11-14 FU 33 pts were at NYHA I (80.4%) and 8 NYHA II (19.5%). There was no pts at NYHA IV during 12 months FU (differences between observational periods statistically significant p < 0.001). CONCLUSIONS: During one-year FU after equine pericardial stentless bioprothesis implantation the improvement of NYHA grade was observed.

[Clinical evaluation of complications after implantation of stentless biological equine pericardial bioprothesis]. / Ocena powiklan po wszczepieniu bezstentowej, biologicznej zastawki aortalnej wykonanej z osierdzia konskiego.

UNLABELLED: Stentless bio-protheses are more and more frequently used in patients with severe aortic stenosis, due to good hemo-dynamic parameters and durability after aortic valve replacement (AVR). Aim of the study was the clinical evaluation of complications after surgical AVR using the 3F equine pericardial stentless bioprothesis (ATS Medtronic, Inc, Minneapolis, USA). PATIENTS AND METHODS: 45 patients (10 women, 35 men), aged from 23 to 78 had implanted the bioprothesis. RESULTS: Two patients died in perioperative period, but the bioprotehsis function was correct. In two patients gastrointestinal (GE) bleeding was observed due to anticoagulation therapy. In remaining 41 patients during one year follow-up no complications were noted. CONCLUSIONS: After implantation 3F bioprotehesis two unrelated deaths and 2 GE bleeding complications were observed. Other 41 patients had no complications during 1 year follow-up.

Hybrid techniques for myocardial regeneration: state of the art and future perspectives.

Myocardium has a limited proliferative capacity, and adult hearts are considered incapable of regenerating after injury. A significant loss in the viable myocardium eventually diminishes the heart's ability to contract synchronously, leading to heart failure. Despite the development in interventional and pharmacological treatment for ischemic heart disease and heart failure, there is a significant number of highly symptomatic patients. For these individuals, treatments that stimulate myocardial regeneration can offer alleviation of dyspnea and angina and improvement in quality of life. Stem cells are known to promote neovascularization and endothelial repair. Various stem cell lines have been investigated over the years to establish those with the highest potential to differentiate into cardiomyocytes, including bone marrow-derived mononuclear cells, mesenchymal stromal cells, CD34+, CD133+, endothelial progenitor cells, and adipose-derived mesenchymal stromal cells. Stem cell studies were based on several delivery pathways: infusion into coronary vessels, direct injection into the injured region of the myocardium, and delivery within the novel bioengineered scaffolds. Acellular materials have also been investigated over the years. They demonstrate the therapeutic potential to promote angiogenesis and release of growth factors to improve the restoration of critical components of the extracellular matrix. This review summarizes hybrid cardiac regeneration treatments that combine novel bioengineering techniques with delivery approaches that cardiac surgeons can provide.

Long-term survival following postoperative myocardial infraction after coronary artery bypass surgery.

BACKGROUND: Postoperative myocardial infraction (MI) is a serious complication among patients undergoing Coronary Artery Bypass Grafting (CABG). Data on the impact of postoperative MI on patients undergoing CABG, specifically with respect to their long term outcomes are sparse. METHODS: We retrospectively analyzed all patients who underwent isolated CABG between January 2014 and December 2016 and identified those who fulfilled the definition of the type 5MI following CABG according to the Fourth Universal Definition of Myocardial Infarction. RESULTS: A total of 4,642 CABG patients were identified, of whom 141 (3.04%) were diagnosed with postoperative MI. The mean follow-up time was 5.1±2.07 years (range, 4.4-6.9 years). Postoperative MI was more common in patients with recent acute coronary syndrome, when compared to stable angina (22.8% vs. 31.9%; P=0.011) and in those with non-elective versus planned surgery (28.4% vs. 18.4%; P=0.003). Postoperative MI after CABG was associated with an increased rate of postoperative complications, including cardiac tamponade and re exploration for bleeding. Mortality after postoperative MI was higher at short-term follow-up (up to one year) and long-term follow-up (up to five years). The risk factors for postoperative MI after CABG were incomplete revascularization (IR) [OR (95% CI): 2.25 (1.59-3.12), P=0.001], non-elective surgery [OR (95% CI): 1.68 (1.10-2.54), P=0.015] and female gender [OR (95% CI): 1.48 (1.01-2.18), P=0.045]. CONCLUSIONS: PMI after CABG is associated with reduced short- and long-term survival. The main risk factors for postoperative MI are IR, female gender, and non-elective surgery.

Bilateral internal thoracic artery use in two-vessel disease does not increase the perioperative risk-A propensity score matched analysis.

BACKGROUND: Bilateral internal thoracic arteries (BITA) are uncommonly used in the every-day practice due to safety concerns and technical challenges with Y-grafts. We hypothesized that in-situ BITA use during coronary artery by-pass grafting (CABG) for two vessel disease is equally safe to standard strategy with left internal thoracic artery-left anterior descending artery revascularization and venous graft to other target vessels. METHODS: A propensity score matched analysis was used to compare elective on-pump CABG patients who received in-situ BITA (BITA-group), versus left internal thoracic artery graft to the left anterior descending artery plus vein (SITA-group). Primary end points were 30-days all-cause-mortality, major adverse cardiac events and incidents and deep sternal wound infections. RESULTS: A total of 50 matched pairs (c-statistics 0.769) were selected from patients operated on between January 2015 and April 2020 using BITA (n = 50) and SITA (n = 2170). There were no inter-group differences in demographics and basic clinical characteristics. The total operation time was longer in the BITA-group (4.0 vs 3.6 hours; p = 0.004). The rate of complete revascularization was similar, as was median aortic cross-clamp time, median extracorporeal circulation time, rate of re-explorations for bleeding, deep sternal wound infections or length of stay. One patient died in BITA group, 3 days after surgery, from a non-cardiac cause. After 36 months, the survival rate was 98% for BITA-group and 96% for controls (log-rank, p = 0.577). CONCLUSIONS: In-situ use of BITA during coronary revascularization for two-vessel disease is as safe and effective, as use of single ITA and vein graft. In-situ strategy abolishes allows to avoid the technically demanding composite graft configuration.