Multiple systemic thromboembolism secondary to acute myocardial infarction in a young patient with coronavirus disease 2019 pneumonia: A case report.

Unlabelled: Coronavirus disease 2019 (COVID-19) is associated with an increased risk of thromboembolic events. However, there are few reports on multiple thromboembolic events in young patients with COVID-19. Herein, we report a case of multiple visceral arterial embolisms secondary to acute myocardial infarction in a young patient with COVID-19.

Efficacy and safety of sheathless guiding catheter for distal radial approach.

Objectives: This study aimed to assess the efficacy and safety of a sheathless guiding system in patients who underwent percutaneous coronary intervention (PCI) with distal radial access (DRA).

Background: Hyperion™ Sheathless® guiding catheter (Asahi Intecc, Japan), one of the latest 6-Fr guiding systems for transradial PCI characterized by novel outer dilator, is considered to facilitate smooth insertion of the catheter to the artery and may contribute to further reduction of access site complications in DRA.

Methods: Between October 2018 and January 2023, 286 patients underwent PCI with a Hyperion™ Sheathless® guiding catheter with DRA at two Japanese hospitals.

Geographic Variations on the Safety and Efficacy of the Supreme Biodegradable Polymer DES: Results From PIONEER III.

Background: The PIONEER III trial showed the 12-month safety and efficacy of the Supreme drug-eluting stent (DES) vs the durable polymer everolimus-eluting stent. We sought to assess whether the characteristics and clinical outcomes of the Supreme DES in PIONEER III were consistent among patients by enrollment location.

Methods: This subgroup analysis of the PIONEER III trial compared the characteristics and outcomes of patients recruited from North America, Europe, and Japan and the relative differences in patient outcomes according to the site recruitment volume.

Intravascular Lithotripsy for Vessel Preparation in Calcified Coronary Arteries Prior to Stent Placement - Japanese Disrupt CAD IV Study 1-Year Results.

Intravascular lithotripsy (IVL) delivers acoustic pressure waves to modify calcium, enhance vessel compliance, and optimize stent deployment. The Disrupt CAD IV study enrolled patients with severe coronary artery calcification and demonstrated low 30-day major adverse cardiovascular events (MACE) and high procedural success following IVL with no final serious angiographic complications. To date, long-term outcomes have not been reported.

Ultrathin, Biodegradable-Polymer Sirolimus-Eluting Stent vs Thin, Durable-Polymer Everolimus-Eluting Stent.

Background: Previous trials suggested the superiority of ultrathin- over thin-strut drug-eluting stents (DES) concerning target lesion failure (TLF) at 1 year after index percutaneous coronary intervention.

Objectives: The aim of this randomized comparison study of ultrathin-strut and thin-strut DES (CASTLE [Randomized Comparison All-Comer Study of Ultrathin Strut and Thin Strut Drug-Eluting Stent]; jRCTs032180084) was to examine the impact of differences in strut thickness of DES on clinical outcomes when implanted with angiography and intravascular ultrasound or optical coherence tomographic guidance.

Methods: CASTLE was a multicenter, prospective, noninferiority study conducted at 65 institutions in Japan.

Safety and Efficacy of the Supreme Biodegradable Polymer Sirolimus-Eluting Stent in Patients With Diabetes Mellitus.

Background: Patients with diabetes mellitus (DM) have worse outcomes following percutaneous coronary intervention than nondiabetic patients. The novel Supreme DES is a biodegradable polymer sirolimus-eluting stent designed to synchronize early drug delivery, limiting the potential for long-term inflammatory response. The purpose of this study was to evaluate the safety and efficacy of the Supreme DES in patients with DM.

Successful coil embolization with distal radial access for a ruptured radial artery pseudoaneurysm in a patient with SARS-CoV-2 infection.

A 50-year-old man with a medical history of diabetes mellitus and hypertension was admitted to a university hospital for severe respiratory insufficiency caused by SARS-CoV-2 infection. His arterial blood pressure and blood oxygen levels were monitored through a plastic cannula inserted in the radial artery in the intensive care unit. After recovery from respiratory insufficiency, the patient was moved to a local hospital where hematoma formation and skin necrosis at the puncture site were noted.

Vascular Complications of Percutaneous Coronary Intervention Via Distal Radial Artery Approach in Patients With Acute Myocardial Infarction With and Without ST-Segment Elevation.

Objectives: Distal radial artery (DRA) access is a novel alternative to conventional radial artery access for coronary catheterization. This study investigated the incidence of vascular complications with percutaneous coronary intervention (PCI) from DRA access among patients with acute myocardial infarction (AMI) with and without ST-segment elevation.

Methods: Between April 2018 and October 2019, a total of 131 consecutive patients underwent primary PCI for AMI, among whom DRA access was used in 116 (88.

Impact of the SARS-CoV-2 Pandemic on Primary Percutaneous Coronary Intervention for Patients with ST-Elevation Myocardial Infarction.

During the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic, patients with ST-elevation myocardial infarction (STEMI) should be treated as possibly infected individuals. Therefore, more time is considered necessary to conduct primary percutaneous coronary intervention (PCI). In this study, we sought to evaluate the impact of the SARS-CoV-2 pandemic on primary PCI for STEMI.

Feasibility and safety of the successive use of distal transradial access for coronary angiography and intervention in the same arm.

Distal transradial access (dTRA) is a novel alternative to conventional radial artery access for coronary catheterization. However, the feasibility and safety of repeated use of dTRA have not been fully elucidated. This study aimed to evaluate the feasibility and safety of the repeated use of dTRA for coronary angiography and intervention in the same arm.

Intravascular Lithotripsy for Vessel Preparation in Severely Calcified Coronary Arteries Prior to Stent Placement - Primary Outcomes From the Japanese Disrupt CAD IV Study.

Background: Intravascular lithotripsy (IVL) delivers acoustic pressure waves to modify calcium, enhance vessel compliance and optimize stent deployment. The objective of this study was to assess the safety and effectiveness of IVL treatment of de novo stenoses involving severely calcified coronary vessels in a Japanese population.

Methods and results: Disrupt CAD IV (NCT04151628) was a prospective, multicenter study designed for Japanese regulatory approval of coronary IVL (SWM-1234).

Monotherapy With Prasugrel After Dual-Antiplatelet Therapy for Japanese Percutaneous Coronary Intervention Patients With High Bleeding Risk - A Prospective Cohort Study (PENDULUM mono Study).

Background: The risks of bleeding and cardiovascular events in high bleeding risk (HBR) Japanese patients undergoing percutaneous coronary intervention (PCI) while receiving single-antiplatelet therapy (SAPT) remains unknown. We aimed to evaluate the frequency of bleeding and cardiovascular events associated with prasugrel monotherapy after short-term dual-antiplatelet therapy (DAPT) in Japanese HBR patients after PCI.

Methods and results: The PENDULUM mono study was a multicenter, non-interventional, prospective registry (n=1,173).

Computational fluid dynamics of internal mammary artery-left anterior descending artery anastomoses.

Objectives: The aim of this study was to elucidate the remodelling of the internal mammary artery (IMA)-left anterior descending artery anastomosis and compare 2 different anastomosis techniques (end-to-side versus side-to-side) using computational fluid dynamics.

Methods: This study included 9 patients. Computed tomography (CT) angiography was performed immediately after coronary artery bypass grafting (CABG) and at 3-6 months later.

Evaluation of the Determinant Factors and Clinical Implications of Self-Care Agency Among Patients with Acute Myocardial Infarction.

In patients with acute myocardial infarction treated with percutaneous coronary intervention (PCI), effective post-hospital care, partially determined by self-care agency, is critical for long-term prognosis. However, the relationship between agency and sociodemographic characteristics requires elucidation. One hundred and six outpatients participated in our study.

Relationship Between Platelet Reactivity and Ischemic and Bleeding Events After Percutaneous Coronary Intervention in East Asian Patients: 1-Year Results of the PENDULUM Registry.

Background The balance between ischemic and bleeding events and their association with platelet reactivity in patients receiving antiplatelet therapy after percutaneous coronary intervention (PCI), which differs among regions, is not fully evaluated for East Asians. We examined ischemic/bleeding events and platelet reactivity in Japanese patients undergoing PCI and determined associations between high/low platelet reactivity and clinical outcomes. Methods and Results PENDULUM (Platelet Reactivity in Patients with Drug Eluting Stent and Balancing Risk of Bleeding and Ischemic Event) is a prospective, multicenter registry of Japanese patients with PCI.

Impact of living alone on the care and outcomes of patients with ST-elevation myocardial infarction.

Background: This study aimed to investigate the association between living alone at home and the care and outcomes of patients with ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (pPCI).

Methods: In total, 557 patients with STEMI underwent pPCI between January 2008 and September 2017. Among them, we included 208 patients who were transferred directly by emergency medical services from their home to the hospital.

Pseudoaneurysm Formation After Cardiac Catheterization Using the Distal Transradial Approach.

This is the first case report of pseudoaneurysm formation after cardiac catheterization through the distal radial artery, which was easily treated by external compression.

Efficacy and safety of the distal transradial approach in coronary angiography and percutaneous coronary intervention: a Japanese multicenter experience.

The novel distal transradial approach (dTRA) is expected to further build upon the advantages of transradial access. However, the incidence of radial artery occlusion (RAO) and hemorrhagic events with the dTRA has not been fully elucidated. The objective of this study was to investigate the effects of using the dTRA on RAO and postprocedural hemorrhage.

Successful treatment of out-of-hospital cardiopulmonary arrest due to streptococcal toxic shock syndrome - effectiveness of extracorporeal membrane oxygenation and the rapid antigen group A streptococcus test: a case report.

Background: Streptococcal toxic shock syndrome caused by Streptococcus pyogenes, a group A streptococcus, infection is a rare condition that rapidly progresses to multiple organ failure, shock, and death. It is thus important to promptly establish a diagnosis, provide hemodynamic support, and initiate appropriate antibiotics therapy.

Case Presentation: A 70-year-old Asian man presented with ventricular fibrillation.

The impact of tissue characterization for in-stent restenosis with optical coherence tomography during excimer laser coronary angioplasty.

We aimed to evaluate the impact of tissue characterization for in-stent restenosis (ISR) with optical computed tomography (OCT) during excimer laser coronary angioplasty (ELCA) in the drug-eluting stent (DES) era. The effect of ELCA for ISR according to differences in tissue characteristics is unclear. Fifty-three ISR lesions (7 bare metal stents and 46 drug-eluting stents) were treated with an ELCA catheter.

Impact of shorter door-to-balloon time on prognosis of patients with STEMI-single-center analysis with a large proportion of the patients treated within 30 min.

Several recent studies suggested that the door-to-balloon time (DTBT) for patients with ST-segment elevation myocardial infarction (STEMI) should be as short as possible, despite the existing guideline for STEMI. This study aimed to evaluate the clinical outcomes of the STEMI patient cohort having the highest proportion of patients treated with a DTBT of ≤ 30 min ever reported. We evaluated 527 consecutive patients with STEMI who underwent percutaneous coronary intervention between 2007 and 2015.