In a randomized trial involving patients undergoing mitral-valve surgery for degenerative mitral regurgitation, the addition of tricuspid repair resulted in a lower risk of the primary outcome, a ...composite of reoperation for tricuspid regurgitation, progression of tricuspid regurgitation, or death. Tricuspid repair resulted in more frequent permanent pacemaker implantation.
Bicuspid aortic valve disease is the most common congenital cardiac disorder, being present in 1% to 2% of the general population. Associated aortopathy is a common finding in patients with bicuspid ...aortic valve disease, with thoracic aortic dilation noted in approximately 40% of patients in referral centers. Several previous consensus statements and guidelines have addressed the management of bicuspid aortic valve–associated aortopathy, but none focused entirely on this disease process. The current guidelines cover all major aspects of bicuspid aortic valve aortopathy, including natural history, phenotypic expression, histology and molecular pathomechanisms, imaging, indications for surgery, surveillance, and follow-up, and recommendations for future research. It is intended to provide clinicians with a current and comprehensive review of bicuspid aortic valve aortopathy and to guide the daily management of these complex patients.
Background Minimally invasive surgical procedures (MIS) may offer several advantages over conventional full sternotomy (FS) aortic valve replacement (AVR). A novel class of aortic valve prostheses ...has been developed for rapid-deployment AVR (RDAVR). We report a randomized, multicenter trial comparing the outcomes for MIS-RDAVR with those of conventional FS-AVR. Methods A total of 100 patients with aortic stenosis were enrolled in a prospective, multicenter, randomized comparison trial (CADENCE-MIS). Exclusion criteria included ejection fraction below 25%, AVR requiring concomitant procedures, and recent myocardial infarction or stroke. Patients were randomized to undergo MIS-RDAVR through an upper hemisternotomy (n = 51) or AVR by FS with a conventional stented bioprosthesis (n = 49). Three patients were excluded before the procedure, and 3 more patients who were randomized to undergo RDAVR were excluded because of their anatomy. Procedural, early clinical outcomes, and functional outcomes were assessed for the remaining 94 patients. Hemodynamic performance was assessed by an echocardiography core laboratory. Results Implanted valve sizes were similar between groups (22.9 ± 2.1 vs 23.0 ± 2.1 mm, p = 0.9). MIS-RDAVR was associated with significantly reduced aortic cross-clamp times compared with FS-AVR (41.3 ± 20.3 vs 54.0 ± 20.3 minutes, p < 0.001), although cardiopulmonary bypass times were similar (68.8 ± 29.0 vs 74.4 ± 28.4 minutes, p = 0.21). Early clinical outcomes were similar between the two groups, including quality of life measures. The RDAVR patients had a significantly lower mean transvalvular gradient (8.5 vs 10.3 mm Hg, p = 0.044) and a lower prevalence of patient–prosthesis mismatch (0% vs 15.0%, p = 0.013) 3 months postoperatively compared with the FS-AVR patients. Conclusions RDAVR by the MIS approach is associated with significantly reduced myocardial ischemic time and better valvular hemodynamic function than FS-AVR with a conventional stented bioprosthesis. Rapid deployment valves may facilitate the performance of MIS-AVR.
Objective The bicuspid aorta is thought to have a higher risk of progressive dilation after aortic valve replacement with a subsequently increased risk of adverse aortic events. Our aim was to ...compare the risk of late aortic events after isolated aortic valve replacement surgery for bicuspid versus tricuspid aortic valve stenosis with concomitant mild to moderate dilatation of the proximal aorta. Methods A total of 325 consecutive patients (60% males; mean age, 59.5 ± 10 years) with aortic valve stenosis and concomitant ascending aortic dilatation of 40 to 50 mm underwent isolated aortic valve replacement from 1995 through 2000. A total of 153 patients (47%) were diagnosed with bicuspid aortic valve stenosis (bicuspid aortic valve group), whereas the remaining 172 patients (53%) had tricuspid aortic valve stenosis (tricuspid aortic valve group). Follow-up (3566 patient-years) was 100% complete. Adverse aortic events were defined as the need for proximal aortic surgery or the occurrence of aortic dissection/rupture or sudden death during follow-up. Results Overall survival was 78 ± 4% in the bicuspid aortic valve group versus 55 ± 6% in the tricuspid aortic valve group ( P = .006) at 15 years postoperatively, but age-adjusted survival was not significantly different between groups ( P = .4). A total of 5 patients (3%) in the bicuspid aortic valve group versus 9 patients (5%) in the tricuspid aortic valve group underwent proximal aortic surgery during follow-up. Aortic dissection occurred in 3 patients in the tricuspid aortic valve group and in no bicuspid aortic valve patients. Fifteen-year freedom from adverse aortic events was 93 ± 3% in the bicuspid aortic valve group versus 82 ± 6% in the tricuspid aortic valve group ( P = .2). Conclusions Patients with bicuspid and tricuspid aortic valve stenosis with concomitant mild to moderate ascending aortic dilatation are at comparably low risk of adverse aortic events 15 years after isolated aortic valve replacement.
Fucosylation of the innermost GlcNAc of N-glycans by fucosyltransferase 8 (FUT8) is an important step in the maturation of complex and hybrid N-glycans. This simple modification can dramatically ...affect the activities and half-lives of glycoproteins, effects that are relevant to understanding the invasiveness of some cancers, development of mAb therapeutics, and the etiology of a congenital glycosylation disorder. The acceptor substrate preferences of FUT8 are well-characterized and provide a framework for understanding N-glycan maturation in the Golgi; however, the structural basis of these substrate preferences and the mechanism through which catalysis is achieved remain unknown. Here we describe several structures of mouse and human FUT8 in the apo state and in complex with GDP, a mimic of the donor substrate, and with a glycopeptide acceptor substrate at 1.80–2.50 Å resolution. These structures provide insights into a unique conformational change associated with donor substrate binding, common strategies employed by fucosyltransferases to coordinate GDP, features that define acceptor substrate preferences, and a likely mechanism for enzyme catalysis. Together with molecular dynamics simulations, the structures also revealed how FUT8 dimerization plays an important role in defining the acceptor substrate-binding site. Collectively, this information significantly builds on our understanding of the core fucosylation process.
During the early phase of the Covid-19 pandemic, reductions of hospital admissions with a focus on emergencies have been observed for several medical and surgical conditions, while trend data during ...later stages of the pandemic are scarce. Consequently, this study aims to provide up-to-date hospitalization trends for several conditions including cardiovascular, psychiatry, oncology and surgery cases in both the in- and outpatient setting.
Using claims data of 86 Helios hospitals in Germany, consecutive cases with an in- or outpatient hospital admission between March 13, 2020 (the begin of the "protection" stage of the German pandemic plan) and December 10, 2020 (end of study period) were analyzed and compared to a corresponding period covering the same weeks in 2019. Cause-specific hospitalizations were defined based on the primary discharge diagnosis according to International Statistical Classification of Diseases and Related Health Problems (ICD-10) or German procedure classification codes for cardiovascular, oncology, psychiatry and surgery cases. Cumulative hospitalization deficit was computed as the difference between the expected and observed cumulative admission number for every week in the study period, expressed as a percentage of the cumulative expected number. The expected admission number was defined as the weekly average during the control period. A total of 1,493,915 hospital admissions (723,364 during the study and 770,551 during the control period) were included. At the end of the study period, total cumulative hospitalization deficit was -10% 95% confidence interval -10; -10 for cardiovascular and -9% -10; -9 for surgical cases, higher than -4% -4; -3 in psychiatry and 4% 4; 4 in oncology cases. The utilization of inpatient care and subsequent hospitalization deficit was similar in trend with some variation in magnitude between cardiovascular (-12% -13; -12), psychiatry (-18% -19; -17), oncology (-7% -8; -7) and surgery cases (-11% -11; -11). Similarly, cardiovascular and surgical outpatient cases had a deficit of -5% -6; -5 and -3% -4; -3, respectively. This was in contrast to psychiatry (2% 1; 2) and oncology cases (21% 20; 21) that had a surplus in the outpatient sector. While in-hospital mortality, was higher during the Covid-19 pandemic in cardiovascular (3.9 vs. 3.5%, OR 1.10 95% CI 1.06-1.15, P<0.01) and in oncology cases (4.5 vs. 4.3%, OR 1.06 95% CI 1.01-1.11, P<0.01), it was similar in surgical (0.9 vs. 0.8%, OR 1.06 95% CI 1.00-1.13, P = 0.07) and in psychiatry cases (0.4 vs. 0.5%, OR 1.01 95% CI 0.78-1.31, P<0.95).
There have been varying changes in care pathways and in-hospital mortality in different disciplines during the Covid-19 pandemic in Germany. Despite all the inherent and well-known limitations of claims data use, this data may be used for health care surveillance as the pandemic continues worldwide. While this study provides an up-to-date analysis of utilization of hospital care in the largest German hospital network, short- and long-term consequences are unknown and deserve further studies.
Celotno besedilo
Dostopno za:
DOBA, IZUM, KILJ, NUK, PILJ, PNG, SAZU, SIK, UILJ, UKNU, UL, UM, UPUK
To report the implant experience and long-term outcomes from a large tertiary care referral center on surgical aortic valve replacement (SAVR) with a contemporary stented pericardial bioprosthesis ...with anticalcification treatment.
Patients underwent SAVR using the Trifecta valve at a single institution. Endpoints included procedural outcomes, adverse events, prosthesis–patient mismatch (PPM), long-term survival, and valve durability. Follow-up included 30-day, 6-month, and annual assessments. Treatment for structural valve deterioration (SVD) included surgical explant and valve-in-valve (V-in-V) transcatheter aortic valve implantation (TAVI).
SAVR was performed in 1241 patients (median age, 73.5 ± 6.4 years; 54% male; median logistic EuroSCORE, 7.8) with concomitant procedures in 713 cases (57.5%). Intraprocedural mortality was 1.4%, and 30-day mortality was 6.0%. At hospital discharge, 68 patients (5.5%) had moderate PPM, and no patients had severe PPM. Adverse events included cardiac arrhythmias (44.7%, mostly atrial fibrillation), respiratory failure (22.9%), acute renal failure requiring temporary renal replacement therapy (12.9%), and low cardiac output syndrome (3.3%). Follow-up data were available over a total of 5469 patient-years (median duration of follow-up, 4.7 years). Freedom at 8 years from all-cause mortality, valve-related mortality, reoperation for SVD (redo SAVR or V-in-V TAVI), and endocarditis were 78.4%, 98.0%, 93.3%, and 96.5%, respectively. Of the 30 patients with SVD, 17 were treated by V-in-V TAVI and 13 underwent surgical explant.
Outcomes from this large single-center cohort at increased surgical risk demonstrate excellent long-term durability of the Trifecta valve for SAVR and feasibility of treating SVD by V-in-V TAVI.
Competing-risk analysis of 1241 patients implanted with the Trifecta bioprosthetic aortic valve. The analysis accounts for 4 mutually exclusive outcomes, including structural valve deterioration (SVD), endocarditis, death without SVD/endocarditis, and alive without SVD/endocarditis. Outcomes show very good durability of the implant. Display omitted
Background Cerebral protection during aortic arch surgery can be performed using various surgical strategies. We retrospectively analyzed our results of different brain protection modalities during ...aortic arch surgery. Methods Between January 2003 and November 2009, 636 consecutive patients underwent aortic arch replacement surgery using unilateral antegrade cerebral perfusion (UACP n = 123), bilateral antegrade cerebral perfusion (BACP n = 242), retrograde cerebral perfusion (RCP n = 51), or deep hypothermia and circulatory arrest (DHCA n = 220). Mean age of patients was 62 ± 14 years, 64% were male, 15% were reoperations, and 37% were performed for acute type A dissections. Mean follow-up was 4.9 ± 0.1 years and was 97% complete. Results Circulatory arrest time was 22 ± 17 minutes UACP, 23 ± 21 minutes BACP, 18 ± 12 minutes RCP, and 15 ± 13 minutes DHCA; p < 0.001). Early mortality was 11% (n = 72) and was not different between the surgical groups. Stroke rate was 9% for ACP patients (n = 33) versus 15% (n = 39) for patients who did not receive ACP ( p = 0.035). Independent predictors of stroke were type A aortic dissection (odds ratio OR, 1.9; 95% confidence interval CI, 1.3 to 3.2; p < 0.001), age (OR, 1.04; 95% CI, 1.01 to 1.06; p = 0.001), duration of circulatory arrest (OR, 1.01, 95% CI, 1.002 to 1.03; p = 0.02), and total aortic arch replacement (OR, 2.7; 95% CI, 1.3 to 5.7; p = 0.005). Five year survival was 68% ± 4% and was not significantly different between groups. Conclusions Antegrade cerebral perfusion is associated with significantly less neurologic complications than RCP and DHCA, despite longer circulatory arrest times. Medium-term survival is worse for patients with postoperative permanent neurologic deficit and preoperative type A aortic dissection.
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