Single-Centre Registry Analysis of Patients Who Underwent Percutaneous Coronary Intervention on Their Coronary Bypass Grafts.

Background: The study assessed the outcomes of patients undergoing percutaneous coronary intervention (PCI) to bypass grafts, focusing on all-cause mortality and target vessel failure (TVF) rates.

Methods: A single-centre registry analysis included 364 patients who underwent PCI on coronary bypass grafts between 2008 and 2019. The study analyzed all-cause mortality and TVF, which encompassed target lesion revascularization, target vessel revascularization, and medically treated occluded target graft post-PCI.

Incidence and Predictors of Outcome in the Treatment of In-Stent Restenosis with Drug-Eluting Balloons, a Real-Life Single-Centre Study.

Objectives: To determine the one-year and five-year occurrence and prognosticators of major adverse cardiac events (MACE: composition of all-cause death, myocardial infarction, target vessel revascularization, and vessel thrombosis), mortality, and target lesion revascularization (TLR) in patients with in-stent restenosis (ISR) treated with drug-eluting balloons (DEBs).

Background: DEBs have become an emerging therapeutic option for ISR. We report the results of a single-center retrospective study on the treatment of ISR with DEB.

Long-term outcomes following ostial left anterior descending artery intervention with or without crossover to left-main.

Background: Ostial left anterior descending (LAD) artery lesions are a critical area for coronary stenting, given that the location subtends a large area of the myocardium and can also be more technically challenging. It remains controversial whether crossover stenting of ostial LAD back into the left-main (LM) is advantageous over stenting the ostium alone.

Methods: To evaluate the long-term clinical outcomes of stenting ostial LAD lesions, we retrospectively reviewed all ostial LAD lesions cases at QEII Health Science Centre between 2008 and 2018.

The COVID-19 Pandemic and Coronary Angiography for ST-Elevation Myocardial Infarction, Use of Mechanical Support, and Mechanical Complications in Canada: A Canadian Association of Interventional Cardiology National Survey.

Background: As a result of the COVID-19 pandemic first wave, reductions in ST-elevation myocardial infarction (STEMI) invasive care, ranging from 23% to 76%, have been reported from various countries. Whether this change had any impact on coronary angiography (CA) volume or on mechanical support device use for STEMI and post-STEMI mechanical complications in Canada is unknown.

Methods: We administered a Canada-wide survey to all cardiac catheterization laboratory directors, seeking the volume of CA use for STEMI performed during the period from March 1 2020 to May 31, 2020 (pandemic period), and during 2 control periods (March 1, 2019 to May 31, 2019 and March 1, 2018 to May 31, 2018).

Initial experience with pre-activation of the cardiac catheterization lab and emergency room bypass for patients with ST-elevation myocardial infarction in Halifax, Nova Scotia.

Background: To determine whether pre-activation of the cardiac catheterization lab by Emergency Health Services (EHS) with a single call system in the field was associated with reduced time to reperfusion in patients with ST-Elevation Myocardial Infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI).

Methods: Consecutive STEMI patients identified by EHS and subsequently taken to the Queen Elizabeth II Health Sciences Center (QEIIHSC) for PPCI between February 1, 2011 and January 30, 2013 were examined. Patients who had pre-activation of the catheterization lab from the field (pre-act group) after the acquisition of the LifeNet® system (Physio Control, Redmond Washington) were compared to those who had usual activation (routine group) prior to the acquisition of the LifeNet® system, for outcomes including treatment timeline data and mortality.

Transfemoral aortic valve implantation for severe aortic stenosis in a patient with dextrocardia situs inversus.

Transcatheter aortic valve implantation (TAVR) has grown rapidly over the past 10 years. Device and delivery catheter systems have evolved to facilitate the procedure and reduce the risk of associated complications, including those related to vascular access. It is important to understand the utility of the TAVR equipment in patients with more challenging anatomy to select the most appropriate technique for this complex procedure.

Recurrent long QT syndrome and syncope in transient apical ballooning syndrome (takotsubo cardiomyopathy).

Transient apical ballooning syndrome, or takotsubo cardiomyopathy is a syndrome characterized by reversible dilation of the left ventricular apex. It usually occurs in response to stress, and resolves completely in a few weeks. The present report describes a 55-year-old woman who presented with chest pain and syncope in response to emotional stress.