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Introduction: Surgical aortic valve replacement for patients with aortic valve disease can be performed with a bioprosthetic or mechanical valve. The use of bioprosthetic valves has increased, making durability an important concern. The Trifecta valve is a third generation bioprosthetic valve, of which we recently encountered a cluster of patients with structural valve degeneration. Patients and methods: First a literature review was performed in order to obtain background information. Then, all patient who had been treated with a Trifecta valve were identified. We reviewed their medical records, follow-up, echocardiographic results and survival. Results: Between November 2010 and June 2017 a total of 301 Trifecta valves were implanted. The mean age of patients was 75,1 years (standard deviation 7,5 years) and concomitant surgery was performed on 57,5% of the patients. Overall survival after one year and five years following surgery was 94,3% and 74,8%, respectively. Reoperation-free survival at one-year and five years following implantation was 98,1% (262/267) and 96,7% (89/92), respectively. The mean post-operative gradients ranged from 13,8 mmHg for the 19 mm valve to 7,1 mmHg for the 27 mm valve. We encountered seven cases of structural valve degeneration with a mean durability of 61 months (standard deviation 8,7 months). Discussion: The Trifecta valve has proven an excellent hemodynamic performance on the short- and mid-term. But early structural valve degeneration as reported in our hospital and published articles might become an issue on the long term. We suggest continuous follow-up of Trifecta patients with special attention for symptoms of valve failure.
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Objective. This study investigates the long-term behaviour of the Perceval® sutureless aortic bioprothesis over a period up to ten years. Echocardiographic data were collected for a single centre study cohort of 334 patient. Follow - up was completed for 99.10 % of the patients. Methods. From September 2007 until December 2016, 334 patients underwent aortic valve replacement (AVR) with the sutureless Perceval® aortic bioprothesis at the University Hospital of Leuven (UZ Leuven). The mean age of the patients was 79.3 + 5.1 years, 60.8 % were female and the mean European System for Cardiac Operative Risk Evaluation (EuroSCORE) II was 5.8 % + 5.5. Results. The 30-day mortality rate was 2.4 % (8 out of 334). 7 patients (2.1 %) suffered from postoperative stroke within 30 days after valve implantation. No patients needed short-term additional valve surgery. The mean follow - up time was 2.3 + 1.9 years (ranging from 14.2 days to 9.6 years). 5 patients suffered from endocarditis and required valve explantation. No structural valve deterioration was seen. The mortality rate after one year was 8.8 %, after two years this was 14.1 %. The peak pressure gradient was 23.5 (+10.5) mmHg and the mean pressure gradient at follow - up was 13.9 (+ 6.8) mmHg. The mean left ventricular ejection fraction at follow - up was 56.3 %. Conclusion. The results obtained in this study show a low mortality rate, both on short and on long-term and reasonable haemodynamic outcomes, meaning the Perceval® aortic bioprothesis is a valid alternative for patients with a high-risk profile in need of AVR.
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Context: TAVR is currently an acceptable treatment option for patients with symptomatic aortic stenosis at very high, high and intermediate surgical risk but has been creeping into even lower risk patient population in the last years. Solid evidence is lacking to support TAVR in low-risk patients as alternative to SAVR as results have been equivocal. Objective: This systematic review aims to investigate current and updated evidence on TAVR vs. SAVR outcomes in low and intermediate surgical risk patient groups by analysing metaanalysis, observational studies and randomized controlled trials on this topic. Data Sources: PubMed, EMBASE, Cochrane, Web of Science and clinicaltrials.gov were systematically searched. Study Selection: One reviewer conducted the eligibility process in a systematic manner. A total of 14 meta-analysis were finally included along with 3 RCT and 9 observational studies. Data Extraction and Synthesis: Baseline characteristics and relevant outcomes were extracted systematically from all included studies. Data was then summarized and presented as HR, OR or RR on forest plots. Results and conclusions: No significant differences were found between SAVR and TAVR in lower risk patient groups in myocardial infarction, stroke or all-cause death. TAVR performed worse than SAVR in terms of paravalvular leak, pacemaker implantation, and re-intervention.
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Aortic valve stenosis is the most common valvular pathology present in the western population and its association with age predicts an incremental increase in its incidence. The golden standard treatment since decades is the surgical aortic valve replacement (SAVR). For the growing population inoperable patients a less invasive transcatheter approach (TAVI) was developed. In addition to this a less invasive sutureless surgical technique (su-AVR) was designed with the idea of overcoming potential problems associated with TAVI. In contrast with studies comparing TAVI with SAVR, the studies comparing the sutureless approach with TAVI are very scarce. Seven independent studies were identified comparing su-AVR with TAVI in high to low risk patients. When combining the results of the studies, su-AVR is associated with better short and midterm survival. Part of this survival is explained by the significant higher rates of moderate and severe paravalvular regurgitation in the TAVI group. In the TAVI group the incidence of postoperative CVA and major vascular complications was also significantly higher. Su-AVR patients received more transfusions but there was no difference between rates of permanent pacemaker placement, postoperative renal failure or duration of stay in the ICU. The main limitations of this systematic review is the low number of studies and patients in combination with the retrospective design (propensity matching). As a conclusion it is safe to say that su-AVR is a very valid and potentially even superior treatment for these patients and ideally big RCTs will be designed in the future to further clarify this.
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Background: Antegrade selective cerebral perfusion (ASCP) has recently been established as the preferred cerebral protection technique during aortic arch surgery without a general consensus regarding its superiority. The aim of this review was to asses its protective effects in comparison with the alternative cerebral protection strategies, the optimal temperature management and the adequacy of unilateral perfusion (uASCP). Method: A literature search was conducted in the PubMed database. Mortality, permanent and neurologic deficit (PND and TND) and other postoperative outcomes were extracted for data-analysis. The mean mortality, PND and TND were computed for sub-analyses. No statistical analysis was performed to evaluate significance. Results: Twenty-two articles were included. Retrograde cerebral perfusion (RCP) resulted in comparison with ASCP and deep hypothermic circulatory arrest (DHCA) in the lowest incidence of mortality (7.17% vs. 8.22% vs. 12.81% resp.), PND (7.23% vs. 7.70% vs. 10.49% resp.) and TND (4.43% vs. 4.52% vs. 6.74% resp.), but only ASCP showed a significant decrease in individual studies. Moderate HCA (MHCA) resulted in comparison with DHCA in the lowest incidence of mortality (9.7% vs. 12.37% resp.), PND (5.8% vs. 6.02% resp.) and TND (8.88% vs. 10.03% resp.). The studies of uASCP vs. bilateral ASCP had contradictory results, but uASCP resulted overall in a lower mortality rate (3.5% vs. 4.59% resp.) and PND rate (2.45% vs. 4.95% resp.) Conclusion: We conclude that ASCP with moderate HCA is a safe and valid alternative cerebral protection strategy and should be preferred especially in extensive aortic arch surgery. Unilateral ASCP is safe in restricted conditions, but conversion to bilateral ASCP should be considered otherwise.
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The Enhanced Recovery After Surgery (ERAS) concept, also known as fast-track, is also invading the cardiac surgery room after proven benefits in other disciplines. Powerful studies have been published but mostly for low risk coronary artery bypass grafting patients. High risk valve surgery patients have worse comorbidity which makes it more difficult to deviate from the normal pathway. This literature review identifies some of the key questions and innovations that may improve pre-, peri- or postoperative care in cardiac surgery patients, with a special interest in aortic valve surgeries. We searched for clinical evidence and recent publications on the following interventions: minimal invasive techniques (limited sternotomy and transcatheter implantation), valve prosthesis, anaesthetic management, early extubation, post anaesthetic care unit, nutritional adjustments and physical activity. A multidisciplinary approach was chosen to emphasize the bigger picture of teamwork in ERAS. Comparing previous findings of different authors unveils some of the gaps in current knowledge and opens interesting topics for further research.
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OBJECTIVE: The study aim was to compare in-hospital morbidity and mortality of a new aortic valve repair program in UZ Leuven with the clinical results of prosthetic valves in patients with severe aortic insufficiency. METHODS: Twenty-nine patients who underwent aortic valve repair were compared to 33 patients who underwent aortic valve replacement from 2013 to 2017. Propensity score matching yielded 2 groups of 12 matched patients. Patient follow-up was complete until discharge and inserted into the AVIATOR database. RESULTS: All patients survived surgery. One patient in the repair group underwent reoperation for AV nodal re-entrant tachycardia. There were no other serious complications. Average extracorporeal circulation time and average aortic crossclamp time were significantly longer in the repair group than in the replacement group (p < 0.001). Hospital stay, ICU stay and echographic outcome data proved no significant difference between both groups. CONCLUSION: The early results of our new aortic valve repair program are satisfying. Except for longer surgery duration, both valve replacement and valve-sparing procedures show comparable short-term results in patients with severe aortic insufficiency. However, more patient data and longer follow-up are required to evaluate long term mortality and morbidity.
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Cardiopulmonaire bypass biedt enorm veel mogelijkheden voor de cardiale heelkunde. Er bestaat echter heel wat controverse omtrent het temperatuursmanagement tijdens deze soort ingrepen. Hoewel de hart- en longfunctie kunstmatig worden overgenomen, zijn er mogelijke negatieve effecten voor het lichaam. Geïnduceerde hypothermie tijdens cardiopulmonaire bypass zou de vitale organen, in het bijzonder de hersenen, beschermen tijdens periodes van eventuele hypoxie. Daartegenover geeft hypothermie ook een verhoogde incidentie van myocardiale complicaties en aritmieën, coagulopathieën en een verhoogd risico voor infectie. Heden bestaat er nog geen bewijs van een significant voordeel voor hypothermie, dan wel voor normothermie. Het is wel duidelijk dat hyperthermie ten alle tijden vermeden worden gezien dit een onevenwicht van het cerebrale zuurstofmetabolisme veroorzaakt, alsook de vorming van embolen tot stand brengt wat een enorme impact heeft op de uiteindelijke overleving en neurologische outcome. Daarbij is de periode van heropwarmen na hypothermie een risicovolle periode voor hyperthermie met al zijn complicaties. Een nauwgezette monitoring en controle van de temperatuur dient gedurende de volledige procedure te worden voorzien. Men dient steeds onder de maximale gemeten lichaamstemperatuur van 37 °C te blijven ten einde hyperthermie te voorkomen.
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ABSTRACT INTRODUCTION Acute Type A Aortic dissection (AAAD) is a dangerous cardiovascular emergency. Debate still rages about the optimal type and extend of the surgery, both on the distal and proximal end of the tear. Often at the proximal side of the tear, the aortic root is also afflicted. Standard procedure then is use of composite valve-graft replacement (Bentall procedure). Recently, there is increasing use of valve-sparing root replacement (VSRR) techniques (either Yacoub remodeling or David reimplantation) in AAAD in selected patients. We compare VSRR to the Bentall procedure. METHODS Using PRISMA guidelines, we searched PubMed and identified 1678 studies. 10 were included in our review. We compared mean age, early mortality, 5-year survival and rate of reoperation. RESULTS Mean age was lower in the VSRR, but only significant in 1 study. Early mortality and 5-year survival were comparable. There were more reoperations in the VSRR group. DISCUSSION Sceptics of VSRR procedures argue that the higher complexity of VSRR procedures makes it to dangerous in AAAD. Early mortality didn’t indicate that in carefully selected patients. Indicating that surgeons make the appropriate choice within their capabilities when they opt VSRR over Bentall. Another concern is the higher reoperation rate which would also be a higher risk of death later. The data suggest that the increased number of reoperations doesn’t impact late survival. We couldn’t identify any higher risk of opting into VSRR over Bentall in correctly chosen patients. CONCLUSION In correctly selected patients, VSRR is a viable alternative to Bentall in AAAD.
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Background: Cardiovascular disease (CVD) is the leading cause of death in the world, responsible for 17.5 million deaths every year. 80% of CVD mortality occurs in low- and middle- income countries (LMICs). 75% of the world population does not have access to cardiac surgery when needed, mainly due to lack of infrastructure, human resources, and financial coverage. Methods: A systematic review was done according to PRISMA guidelines to identify quantitative data on access to cardiac surgical care for an undifferentiated population. Collected data was used to calculate numbers and ratios of adult (ACS) and pediatric cardiac surgeons (PCS) to population. Available information was used to map cardiac centers and surgical volume around the world. Results: 12,180 ACS and 3,858 PCS were listed in the Cardiothoracic Surgery Network database in August 2017, equaling 1.64 (0-181.82) ACS and 0.52 (0-25.97) PCS per million population globally. Large disparities existed between regions, ranging from 0.12 ACS and 0.08 PCS per million population in sub-Saharan Africa to 11.12 ACS and 2.08 PCS in North America. Low- income countries possessed 0.04 ACS and 0.03 PCS per million population, compared to 7.15 ACS and 1.67 PCS in high-income countries (HICs). Discussion: This review maps the current global state of access to cardiac surgery. Disparities exist between and within world regions, with a positive correlation between nations’ economic status and access to cardiac surgery. Cardiac workforce, infrastructure, and interventions remain far below the suggested numbers. Nevertheless, low early mortality rates in low- resource settings comparable to HICs suggest the possibility of high-quality surgical care in LMICs.
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