Long-term outlook for transcatheter aortic valve replacement

Transcatheter aortic valve replacement (TAVR) revolutionized the treatment of severe symptomatic aortic stenosis (AS). TAVR is increasingly offered for lower-risk patients. The role and place of TAVR in the future treatment of AS is not clear yet. In this review, we discuss the long-term outlook for TAVR, its challenges and its relationship to conventional surgical aortic valve replacement

Homes in Flux : Multiple Layers of Domesticity among Syrian Refugees in Istanbul

To date, Turkey has one of the highest refugee populations in the world. The Syrian conflict has played a major role in this as over 2,5 million Syrians have taken refuge in Turkey. Most of Syrian refugees are residing in the largest city of Turkey, Istanbul. Turkey is a signatory member of the Convention relating to the Status of Refugees, however has an exception for permanent residency granted only for European refugees. Thus, under Turkish refugee policy, Syrians are merely granted temporary protection that guarantees them a temporary residency permit. However, the policy does not cover; at the time of this research; the right to work. Syrian refugees, undocumented Syrians and Syrian Palestinians are especially vulnerable in Turkish society due to the lack of permanent residency and legal work. This research identifies how Syrian refugees create home as well as the factors that influence their home-making process in Istanbul. The factors are evaluated through the conditions under which Syrian refugees are residing in Istanbul including the right to work, housing and residency. The research also evaluates the refugees home-making in retrospective to their living conditions, feeling of home, legal position, access to a dwelling place as well as cultural identification. Although, this research focuses on the individual experience of home-making for Syrian refugees, it considers and examines Syrian refugees in a context of politicised bodies. As international refugees, Syrian refugees are highly politicized bodies, whose lives are affected by international politics as well as the domopolitics of the country in which they reside. Subsequently, their home and their home-making processes are also politicised. Beyond politics, refugeeness alters one's relationship to home and place, making home a complex concept attached with emotions and potential pain and loss. Literacy identifies that refugees displace their home through space and time. Hence, this research treats home as a socially and culturally produced metaphor that describes a person's belonging within socio-spatial narratives, but of which content is individually chosen to describe or to support a person's identity and psychological environment. The method of this research was a combination of two field trips to Istanbul, Turkey, fourteen in-depth interviews and qualitative analysis. The main reference of the research are the fourteen in-depth interviews that included ten men and four women; aged from 20 to 40 years old; Syrians residing in Istanbul. The interviewees were selected through social media online connections and face-to-face acquaintances during the field trips. The interviewees time of residence in Istanbul varied from two months to over four years. The eleven influencing factors identified in this research can be more commonly divided into two categories: the common factors and the personal factors. Common factors related to the responder's habitation environment; such as the city of Istanbul and the Turkish society. These common factors included: the city itself, the Turkish culture and society, the legislation, working life, housing, discrimination and relationships with their family and friends as well as with the Turkish people. The interviewees considered these factors as the ones that impacted everyday life and which they could not 'escape'. Personal factors that were identified are related to interviewees personality, world views and emotions. The interviewees could be divided into four main categories of personal factor denominators: their relationship to Syria, sense of belonging, definition of home and views of the future. This research concludes that displacement has an impact on how home is perceived and reflected by the interviewees. Its findings are in accordance to previous research literature on home-making among refugees, but it questions refugee policies that emphasis on repatriation as the most favourable long term solution for refugees as well as the position of housing as a most influential factor in refugees' home-making, by stating that other factors such as relationship to family and friends and earning a living, are higher in importance for those who have arrived into a new country less than two years ago.Syyrian kriisin myötä Turkissa asuu tänä päivänä maailman laajin pakolaisyhteisö: 2,5 miljoonaa. Suuri osa Syyrian pakolaisista on asettunut asumaan Turkin suurimpaan kaupunkiin, Istanbuliin. Syyrian pakolaisilla on Turkissa erikoisasema: heitä varten on säädetty erikseen pakolaisasetus, joka määrittelee syyrialaisten pakolaisten aseman Turkissa. Syyrialaiset saavat oleskella maassa niin kutsutun väliaikaisen suojeluksen nojalla, joka estää suojelusta hakevien palautukset Syyriaan, mutta tutkimuksen aikaan ei tarjonnut mahdollisuutta työskennellä laillisesti tai pysyvää oleskelulupaa. Tämä asetus laittaa syyrialaiset pakolaiset hyvin haavoittuvaan asemaan turkkilaisessa yhteiskunnassa, jossa suurin osa työskentelee laittomasti ja heillä on ongelmia muun muassa hankkia asuntoa. Tämä tutkimus perehtyy siihen, kuinka syyrialaiset pakolaiset tekevät kodin Istanbulissa ja mitkä tekijät vaikuttavat kodin tekemiseen. Näitä tekijöitä tarkastellaan niiden olosuhteiden kautta, jotka syyrialaisilla vallitsevat Istanbulissa. Huomioon otettuja seikkoja ovat muun muassa laillinen asema, asema asuntomarkkinoilla, työskentelymahdollisuudet, kulttuurinen identifioituminen sekä kodin kokeminen. Vaikka tämä tutkimus keskittyy yksilöllisiin kokemuksiin, syyrialaisten pakolaisten kodin tekemistä tarkastellaan myös pakolaiskontekstissa, jossa pakolaisten kodin tekeminen on politisoitunutta. Pakolaisina syyrialaiset ovat hyvin politisoituja henkilöitä, joiden kodin tekemiseen vaikuttaa isäntämaan domopolitiikka kuten myös kansainvälinen politiikka. Poliittisen näkökulman lisäksi tutkimus nojaa kirjallisuuteen pakolaisten kodin tekemisestä, joka huomioi pakolaisuuden muuttavan yksilön suhdetta ja käsitystä kodista. Kodin nähdään olevan merkityksellinen konsepti juuri siihen kohdistuvan menetyksen ja kivun vuoksi. Tutkimuksessa käytetyssä kirjallisuudessa pakolaisten nähdään sijoittavan kodin useisiin eri paikkoihin ja myös aikoihin. Tämä tutkimus käsittelee kotia sosiaalisesti ja kulttuurisesti tuotettuna metaforana, joka kuvaa henkilön kuulumista sosio-spatiaalisissa narratiiveissa, mutta jonka sisällön yksilö valitsee kuvatakseen tai tukeakseen omaa identiteettiään ja psykologista hyvinvointiaan. Tutkimuksen metodina on kvalitatiivinen analyysi. Sen aineisto on kerätty neljästätoista syvähaastattelusta ja kahdesta tutkimusmatkasta Istanbuliin. Haastateltavat olivat 20-40-vuotiaita syyrilaisia, jotka olivat eläneet Istanbulissa kahdesta kuukaudesta yli neljään vuoteen. Haastateltavat valittiin sosiaalisen median välityksellä luotujen suhteiden kautta. Tutkimuksessa selvisi yksitoista kodin tekemiseen vaikuttavaa tekijää, jotka on jaettu yleisiin ja yksilöllisiin tekijöihin. Yleiset tekijät ovat elinympäristöstä nousevia tekijöitä, jotka vaikuttivat kaikkiin haastateltaviin. Nämä tekijät olivat Istanbul kaupunkina, turkkilainen kulttuuri ja yhteiskunta, lainsäädäntö, työelämä, syrjiminen, ihmissuhteet perheeseen, ystäviin ja turkkilaisiin. Yksilölliset tekijät ovat haastateltavan persoonasta, maailmankatsomuksesta ja tunteista nousevia tekijöitä, jotka yleisten tekijöiden lailla vaikuttivat haastateltavien kodin kokemukseen. Yksilölliset tekijät jakautuivat neljään kategoriaan: haastateltavien suhteeseen Syyriaan, kuulumisen kokemukseen, kodin merkitykseen ja tulevaisuuden näkemyksiin. Tämän tutkimuksen tulokset tukevat aikaisempaa tutkimusta pakolaisten kodin tekemisestä ja siitä, kuinka kotimaassa sijainneen kodin menetys vaikuttaa siihen, kuinka pakolaiset käsittävät ja kokevat kodin. Tutkimus kuitenkin kyseenalaistaa pakolaisten kotouttamiseen liittyviä poliittisia ratkaisuja, kuten kotimaahan palauttamisen ensisijaisena vaihtoehtona. Tutkimuksessa kävi myös ilmi, että asumuksen sijaan kotoutumisen kannalta ensisijaisia tekijöitä olivat suhteet perheeseen ja ystäviin ja elannon ansaitseminen alle kaksi vuotta Istanbulissa asuneiden haastateltavien keskuudessa

Virtual reality 3D echocardiography in the assessment of tricuspid valve function after surgical closure of ventricular septal defect

Background. This study was done to investigate the potential additional role of virtual reality, using three-dimensional (3D) echocardiographic holograms, in the postoperative assessment of tricuspid valve function after surgical closure of ventricular septal defect (VSD). Methods. 12 data sets from intraoperative epicardial echocardiographic studies in 5 operations (patient age at operation 3 weeks to 4 years and bodyweight at operation 3.8 to 17.2 kg) after surgical closure of VSD were included in the study. The data sets were analysed as two-dimensional (2D) images on the screen of the ultrasound system as well as holograms in an I-space virtual reality (VR) system. The 2D images were assessed for tricuspid valve function. In the I-Space, a 6 degrees-of-freedom controller was used to create the necessary projectory positions and cutting planes in the hologram. The holograms were used for additional assessment of tricuspid valve leaflet mobility. Results. All data sets could be used for 2D as well as holographic analysis. In all data sets the area of interest could be identified. The 2D analysis showed no tricuspid valve stenosis or regurgitation. Leaflet mobility was considered normal. In the virtual reality of the I-Space, all data sets allowed to assess the tricuspid leaflet level in a single holographic representation. In 3 holograms the septal leaflet showed restricted mobility that was not appreciated in the 2D echocardiogram. In 4 data sets the posterior leaflet and the tricuspid papillary apparatus were not completely included. Conclusion. This report shows that dynamic holographic imaging of intraoperative postoperative echocardiographic data regarding tricuspid valve function after VSD closure is feasible. Holographic analysis allows for additional tricuspid valve leaflet mobility analysis. The large size of the probe, in relation to small size of the patient, may preclude a complete data set. At the moment the requirement of an I-Space VR system limits the applicability in virtual reality 3D echocardiography in clinical practice

The rationale for heart team decision-making for patients with stable, complex coronary artery disease

Stable complex coronary artery disease can be treated with coronary artery bypass grafting (CABG), percutaneous coronary intervention (PCI), or medical therapy. Multidisciplinary decision-making has gained more emphasis over the recent years to select the most optimal treatment strategy for individual patients with stable complex coronary artery disease. However, the so-called 'Heart Team' concept has not been widely implemented. Yet, decision-making has shown to remain suboptimal; there is large variability in PCI-to-CABG ratios, which may predominantly be the consequence of physician-related factors that have raised concerns regarding overuse, underuse, and inappropriate selection of revascularization. In this review, we summarize these and additional data to support the statement that a multidisciplinary Heart Team consisting of at least a clinical/non-invasive cardiologist, interventional cardiologist, and cardiac surgeon, can together better analyse and interpret the available diagnostic evidence, put into context the clinical condition of the patient as well as consider individual preference and local expertise, and through shared decision-making with the patient can arrive at a most optimal joint treatment strategy recommendation for patients with stable co

Impact of left ventricular ejection fraction on clinical outcomes after left main coronary artery revascularization

Aim: To evaluate the impact of left ventricular ejection fraction (LVEF) on 3-year outcomes in patients with left main coronary artery disease (LMCAD) undergoing percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) in the EXCEL trial. Methods and results: The EXCEL trial randomized patients with LMCAD to PCI with everolimus-eluting stents (n = 948) or CABG (n = 957). Among 1804 patients with known baseline LVEF, 74 (4.1%) had LVEF <40% [heart failure with reduced ejection fraction (HFrEF)], 152 (8.4%) LVEF 40–49% [heart failure with mid-range ejection fraction (HFmrEF)] and 1578 (87.5%) LVEF ≥50% (heart failure with preserved ejection fraction). Patients with HFrEF vs. HFmrEF vs. preserved LVEF experienced a longer postoperative hospital stay (9.0 vs. 7.0 vs. 6.0 days, P = 0.02) with greater peri-procedural complications after CABG, while hospital stay after PCI was unaffected by LVEF (1.5 vs. 2.0 vs. 1.0 days, P = 0.20). The composite primary endpoint of death, stroke, or myocardial infarction at 3 years was 29.3% (PCI) vs. 27.6% (CABG) in patients with HFrEF, 16.2% vs. 15.0% in patients with HFmrEF, and 14.5% vs. 14.6% in those with preserved LVEF, respectively (Pinteraction = 0.90). Smoothing spline analysis demonstrated that the 3-year risk of all-cause death increased when LVEF decreased, both in patients undergoing CABG and PCI. Conclusion: In the EXCEL trial, the composite rate of death, stroke or myocardial infarction at 3 years was significantly higher in patients with HFrEF compared with HFmrEF or preserved LVEF, driven by an increased rate of all-cause death. No significant differences after PCI vs. CABG were observed among patients with HFrEF, HFmrEF and preserved LVEF. Longer-term follow-up could provide important insights on differences in clinical outcomes that might emerge over time. Clinical Trial Registration: ClinicalTrials.gov ID NCT01205776

Impact of non-respect of SYNTAX score II recommendation for surgery in patients with left main coronary artery disease treated by percutaneous coronary intervention: an EXCEL substudy

OBJECTIVES: The SYNTAX score II (SSII) was developed from the SYNTAX trial to predict the 4-year all-cause mortality after left main or multivessel disease revascularization and to facilitate the decision-making process. The SSII provides the following treatment recommendations: (i) coronary artery bypass grafting (CABG) or percutaneous coronary intervention (PCI) (equipoise risk), (ii) CABG preferred (excessive risk for PCI) or (iii) PCI preferred (excessive risk for CABG). We sought to externally validate SSII and to investigate the impact of not abiding by the SSII recommendations in the randomized EXCEL trial of PCI versus CABG for left main disease. METHODS: The calibration plot of predicted versus observed 4-year mortality was constructed from individual values of SSII in EXCEL. To assess overestimation versus underestimation of predicted mortality risk, an optimal fit regression line with slope and intercept was determined. Prospective treatment recommendations based on SSII were compared with actual treatments and all-cause mortality at 4 years. RESULTS: SSII variables were available from EXCEL trial in 1807/1905 (95%) patients. For the entire cohort, discrimination was possibly helpful (C statistic = 0.670). SSII-predicted all-cause mortality at 4 years overestimated the observed mortality, particularly in the highest-risk percentiles, as confirmed by the fit regression line [intercept 2.37 (1.51-3.24), P = 0.003; slope 0.67 (0.61-0.74), P < 0.001]. When the SSII-recommended treatment was CABG, randomized EXCEL patients treated with PCI had a trend towards higher mortality compared with those treated with CABG (14.1% vs 5.3%, P = 0.07) in the as-treat population. In the intention-to-treat population, patients randomized to PCI had higher mortality compared with those randomized to CABG (15.1% vs 4.1%, P = 0.02), when SSII recommended CABG. CONCLUSIONS: In the EXCEL trial of patients with left main disease, the SSII-predicted 4-year mortality overestimated the 4-year observed mortality with a possibly helpful discrimination. Non-compliance with SSII CABG treatment recommendations (i.e. randomized to PCI) was associated with higher 4-year all-cause mortality

Improving coronary artery bypass grafting: a systematic review and meta-analysis on the impact of adopting transit-time flow measurement

Despite there being numerous studies of intraoperative graft flow assessment by transit-time flow measurement (TTFM) on outcomes after coronary artery bypass grafting (CABG), the adoption of contemporary TTFM is low. Therefore, on 31 January 2018, a systematic literature search was performed to identify articles that reported (i) the amount of grafts classified as abnormal or which were revised or (ii) an association between TTFM and outcomes during follow-up. Random-effects models were used to create pooled estimates with 95% confidence intervals (CI) of (i) the rate of graft revision per patient, (ii) the rate of graft revision per graft and (iii) the rate of graft revision among grafts deemed abnormal based on TTFM parameters. The search yielded 242 articles, and 66 original articles were included in the systematic review. Of those articles, 35 studies reported on abnormal grafts or graft revisions (8943 patients, 15 673 grafts) and were included in the meta-analysis. In 4.3% of patients (95% CI 3.3–5.7%, I 2 = 73.9) a revision was required and 2.0% of grafts (95% CI 1.5–2.5%; I 2 = 66.0) were revised. The pooled rate of graft revisions among abnormal grafts was 25.1% (95% CI 15.5–37.9%; I 2 = 80.2). Studies reported sensitivity ranging from 0.250 to 0.457 and the specificity from 0.939 to 0.984. Reported negative predictive values ranged from 0.719 to 0.980 and reported positive predictive values ranged from 0.100 to 0.840. This systematic review and meta-analysis showed that TTFM could improve CABG procedures. However, due to heterogeneous data, drawing uniform conclusions appeared challenging. Future studies should focus on determining the optimal use of TTFM and assessing its diagnostic accuracy

Economic outcomes of percutaneous coronary intervention with drug-eluting stents versus bypass surgery for patients with left main or three-vessel coronary artery disease: One-year results from the SYNTAX trial

Objectives: To evaluate the cost-effectiveness of alternative approaches to revascularization for patients with three-vessel or left main coronary artery disease (CAD). Background: Previous studies have demonstrated that, despite higher initial costs, long-term costs with bypass surgery (CABG) in multivessel CAD are similar to those for percutaneous coronary intervention (PCI). The impact of drug-eluting stents (DES) on these results is unknown. Methods: The SYNTAX trial randomized 1,800 patients with left main or three-vessel CAD to either CABG (n = 897) or PCI using paclitaxel-eluting stents (n = 903). Resource utilization data were collected prospectively for all patients, and cumulative 1-year costs were assessed from the perspective of the U.S. healthcare system. Results: Total costs for the initial hospitalization were $5,693/patient higher with CABG, whereas follow-up costs were$2,282/patient higher with PCI due mainly to more frequent revascularization procedures and higher outpatient medication costs. Total 1-year costs were thus $3,590/patient higher with CABG, while quality-adjusted life expectancy was slightly higher with PCI. Although PCI was an economically dominant strategy for the overall population, cost-effectiveness varied considerably according to angiographic complexity. For patients with high angiographic complexity (SYNTAX score > 32), total 1-year costs were similar for CABG and PCI, and the incremental cost-effectiveness ratio for CABG was$43,486 per quality-adjusted life-year gained. Conclusions: Among patients with three-vessel or left main CAD, PCI is an economically attractive strategy over the first year for patients with low and moderate angiographic complexity, while CABG is favored among patients with high angiographic complexity

Compliance With Guideline-Directed Medical Therapy in Contemporary Coronary Revascularization Trials

Background: Despite the well-established benefits of secondary cardiovascular prevention, the importance of concurrent medical therapy in clinical trials of coronary revascularization is often overlooked. Objectives: The goal of this study was to assess compliance with guideline-directed medical therapy (GDMT) in clinical trials and its potential impact on the comparison between percutaneous coronary intervention (PCI) and coronary artery bypass grafting (CABG). Methods: The Cochrane Central Register of Controlled Trials and MEDLINE were searched from 2005 to August 2017. Clinical trial registries and reference lists of relevant studies were also searched. Randomized controlled trials comparing PCI with drug-eluting stents versus CABG and reporting medical therapy after revascularization were included. The study outcome was compliance with GDMT, defined as the following: 1) any antiplatelet agent plus beta-blocker plus statin (GDMT1); and 2) any antiplatelet agent plus beta-blocker plus statin plus angiotensin-converting enzyme inhibitor/angiotensin receptor blocker (GDMT2). Data collection and analysis were performed according to the methodological recommendations of The Cochrane Collaboration. Results: From a total of 439 references, 5 trials were included based on our inclusion and exclusion criteria. Overall, compliance with GDMT1 was low and decreased over time from 67% at 1 year to 53% at 5 years. Compliance with GDMT2 was even lower and decreased from 40% at 1 year to 38% at 5 years. Compliance with both GDMT1 and GDMT2 was higher in PCI than in CABG at all time points. Meta-regression suggested an association between lower use of GDMT1 and adverse clinical outcomes in PCI versus CABG at 5 years. Conclusions: Compliance with GDMT in contemporary clinical trials remains suboptimal and is significantly lower after CABG than after PCI, which may influence the comparison of clinical trial endpoints between those study groups