Search

Bioresorbable scaffolds (BRS) are a novel technology in coronary intervention. However, recent trials demonstrate higher rates of device failure compared to contemporary drug-eluting stents. This study sought to utilise a clinical quality registry to assess the medium-term safety of the Abbott Absorb BRS (Abbott Vascular, Santa Clara, CA, USA), in an Australian context.A prospective, observational study of 192 BRS percutaneous coronary interventions (PCI) compared to 31,773 non-BRS PCIs entered in the Victorian Cardiac Outcomes Registry from 2013 to 2017. The main outcome measure was patient-oriented composite endpoint (POCE) events comprising all-cause mortality, any myocardial infarction (MI), and any revascularisation.Bioresorbable scaffolds patients (mean age 61.6±10.5 years, 79% male) were younger, had less comorbidity, less prior PCI, fewer ST elevation myocardial infarction (STEMI) presentations, lower rates of multi-lesion disease and more adjuvant devices compared to non-BRS PCI (all p0.01). All-cause mortality was 2.1%, myocardial infarction (MI) 2.1%, scaffold thrombosis 3.1% and any revascularisation 14.1% (mean follow-up 27.4±8.9 months). POCE events occurred in 11.5% at 1 year and 16.9% at 2 years, comparable to pooled-trial data. Multivariate predictors of POCE were1 scaffold used (odds ratio [OR] 4.6, 95% confidence interval [CI] 1.9-11.4, p0.01) and scaffold diameter ≤2.5 mm (OR 3.3, 95% CI 1.4-7.6, p=0.02). Over 95% guideline adherence was achieved in six of eight patient selection criteria and four of six device deployment criteria.In an Australian setting, BRS were used in non-complex patients. Most guidelines for use were adhered to and outcomes were comparable to pooled trial data. Clinical quality registries are effective in assessing novel treatments and technologies when potential safety concerns develop.

BACKGROUND: His-bundle pacing (HBP) has emerged as a promising technique to avoid pacing complications associated with dyssynchrony from right ventricular pacing, but data are limited to experienced operators and centres. We aimed to evaluate the implementation and outcomes of an HBP program in an Australian setting. METHODS: Data were retrospectively collected on 140 consecutive HBP procedures attempted at three centres from March 2018 to September 2019. The cohort was divided into three groups (early: procedures 1-47, middle: 48-94, late: 95-140) to determine changes in procedural success in relation to operator experience. RESULTS: Median age was 76 years (IQR 68-80 yrs); 69% were male. Atrial fibrillation was present in 59%, left ventricular ejection fraction (LVEF) ≤40% in 25%, and left and right bundle branch blocks present in 23% and 16% respectively, and atrioventricular (AV) block was present in 26%. Overall procedural success was 87%, median implant threshold 0.8V@1 ms, and QRS duration improved in 64% of procedures. Procedural success (early 83%, middle 89%, late 89%, p=0.58) was not different, while median procedural time (early 98 mins, middle 83 mins, late 70 mins, p

Primary percutaneous coronary intervention (PPCI) is the preferred therapy for patients presenting with ST-elevation myocardial infarction (STEMI). We reviewed patients undergoing PCI for STEMI over a 6-year period to evaluate changes in procedural characteristics and clinical outcomes given recent changes to STEMI guidelines.All patients presenting to the Alfred Hospital, a tertiary referral hospital, between 1 January 2010 and 31 December 2015 undergoing PCI for STEMI were identified. Detailed review of their procedure reports was performed and 30-day and 12-month clinical outcomes were recorded including major adverse cardiac events (MACE).There was a total of 445 patients aged 60.6±12.4 years with 369 (82.9%) male. There was a significant increase in radial access use over the 6-year period 0/49 (0%) in 2010 vs 56/113 (49.6%) in 2015 (p0.01). There was a significant reduction in the use of IIb/IIIa receptor antagonists during the period 29/49 (59%) in 2010 vs 24/113 (21%) in 2015 (p0.01) and use of aspiration thrombectomy 15/49 (31%) in 2010 vs 19/113 (17%) in 2015 (p0.01). There was no significant reduction in major bleeding over this period with 2/49 (4%) in 2010 vs 5/108 (5%) in 2015 (p=0.32). Thirty-day and 12-month mortality was also unchanged.Between 2010 and 2015 there has been a significant increase in the use of radial access and a reduction in the use of glycoprotein IIb/IIIa antagonists and aspiration thrombectomy in patients undergoing PPCI. This was not associated with changes in major bleeding or 30-day or 12-month mortality.

Transcatheter aortic valve implantation (TAVI) is increasingly used for intermediate- and high-risk patients with severe symptomatic aortic stenosis (AS). However, safe undertaking of the procedure may be precluded by various anatomic factors. This study sought to identify prevalence of factors that prevent progression to TAVI.TAVI candidates with severe AS undergoing workup coronary angiography and iliac vessel angiography (±cardiac-gated CT) were identified and factors precluding TAVI were reviewed retrospectively from a single-centre cardiac database over a 10-year period.197 patients were included; mean age was 81.5±6.5years (±SD); 46.2% were male. 26.9% of TAVI candidates could not proceed to femoral access TAVI due to various factors including unsuitable peripheral vasculature (13.2%), untreated coronary artery disease (CAD) deemed high risk for TAVI (8.1%), unfavourable aortic characteristics (4.1%), and low-lying coronary ostia (1.5%). Factors associated with unsuitable femoral vasculature included female gender (p0.01) and any CAD (p=0.03). Factors associated with the presence of unrevascularised CAD included male gender (p0.01), estimated glomerular filtration rate (eGFR)30mL/min/1.73mNon-progression to TAVI among higher risk patients with severe AS has become less common over the last 10 years with improvements in operator experience, lower profile devices, and wider ranges of valve sizes.