Publications by authors named "Rhian E Davies"

Complications in percutaneous coronary intervention (PCI), particularly in chronic total occlusion (CTO) cases, pose notable challenges, with a mortality rate of approximately 0.4% during hospitalization, mainly due to issues like perforation and tamponade. Although risk assessment tools can aid in evaluating periprocedural complication risk, prevention and preparedness take precedence.

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Background: There is limited information on the impact of the target vessel on the procedural techniques and outcomes of chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Methods: We analyzed the baseline clinical and angiographic characteristics and procedural outcomes of 11,580 CTO PCIs performed between 2012 and 2022 at 44 centers.

Results: The most common CTO target vessel was the right coronary artery (RCA) (53.

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Article Synopsis
  • - Advances in PCI devices have increased the number of patients eligible for complex revascularization procedures, including those with serious health issues or complicated heart conditions (CHIP).
  • - This review compares two specific cases of CHIP interventions conducted in the USA, illustrating differences in practice between American and Japanese operators.
  • - Key discussion points include patient selection, collaborative decision-making through heart teams, hemodynamic support usage, and the potential for learning and improving outcomes from international practices.
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Background: Coronary calcification is common and increases the difficulty of chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Methods: We examined the impact of calcium on procedural outcomes of 13,079 CTO PCIs performed in 12,799 patients at 46 US and non-US centers between 2012 and 2023.

Results: Moderate or severe calcification was present in 46.

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Background: Donor vessel injury is a potentially life-threatening complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Aims: Our goal was to examine the incidence, mechanisms, treatment, and outcomes of patients with donor vessel injury in a large multicenter CTO PCI registry.

Methods: We analyzed the baseline clinical and angiographic characteristics, and procedural outcomes of 12,349 CTO PCIs performed between 2012 and 2022 at 44 centers.

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Background: Aortocoronary dissection is a potentially serious complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Methods: We examined the incidence, mechanisms, treatment, and outcomes of aortocoronary dissection among 12,117 CTO PCIs performed between 2012 and 2022 in a large multicenter CTO PCI registry.

Results: The incidence of aortocoronary dissection was 0.

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Background: Guidewires and microcatheters are critical to the success of chronic total occlusion (CTO) percutaneous coronary intervention (PCI).

Methods: We examined equipment utilization in 11,202 CTO-PCIs performed in 10,952 patients at 42 United States (US) and non-US centers between 2012 and 2022.

Results: Antegrade-only crossing was attempted in 7628 CTO-PCIs (68%) and the retrograde approach was used in 3574 CTO-PCIs (32%).

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Although high body mass index (BMI) is a known risk factor for the development of cardiovascular diseases, people who are overweight or obese often have better outcomes after cardiac procedures. Whether this "obesity paradox" is observed in chronic total occlusion (CTO) percutaneous coronary intervention (PCI) is unknown. Therefore, we examined the association of BMI with the outcomes of CTO-PCI in patients from the large, multicenter PROGRESS-CTO registry after stratifying patients into 3 BMI groups.

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Purpose Of The Review: The goal of this paper is to review the current evidence surrounding CTO PCI in patients with low EF, the most high-risk population to treat. We also present pertinent case examples and offer practical tips to increase success and lower complications when performing CTO PCI in patients with low EF.

Recent Findings: In a prospective randomized control study, greater improvement in angina frequency and quality of life, assessed by the Seattle Angina Questionnaire, was achieved by CTO PCI compared to optimal medical therapy.

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Background: Whether saphenous vein grafts (SVGs) should be occluded after successful chronic total occlusion (CTO) percutaneous coronary intervention (PCI) of the corresponding native vessel remains controversial.

Methods: We analyzed the clinical and angiographic characteristics and procedural outcomes of 51 patients who underwent SVG occlusion following successful CTO-PCI of the corresponding native vessel between 2015 and 2022 at 14 centers.

Results: Mean patient age was 71 ± 8 years and 80% were men.

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Article Synopsis
  • The study analyzed gender differences in outcomes of chronic total occlusion percutaneous coronary interventions (CTOs) from 2012 to 2022, involving 9,457 procedures at 38 centers.
  • Results showed that women were older with more comorbidities than men, and while they had higher technical and procedural success rates, they also experienced more in-hospital major adverse cardiovascular events (MACE).
  • Men had longer procedure times and required more radiation and contrast compared to women, suggesting differences in treatment approaches and outcomes between genders.
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Background: Coronary artery perforation is a feared complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI) and often leads to serious adverse clinical events.

Aims: We sought to develop a risk score to predict clinical coronary artery perforation in patients undergoing CTO PCI.

Methods: We analysed clinical and angiographic parameters from 9,618 CTO PCIs in the Prospective Global Registry for the Study of Chronic Total Occlusion Intervention (PROGRESS-CTO).

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Coronary artery perforation is a feared complication of chronic total occlusion (CTO) percutaneous coronary intervention (PCI). Our objective was to describe the incidence, mechanisms, treatment, and outcomes of coronary artery perforation during CTO PCI. We analyzed the baseline clinical and angiographic characteristics and procedural outcomes of 10,454 CTO PCIs performed in 10,219 patients between 2012 and 2022.

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Background: The use of intravascular lithotripsy (IVL) in chronic total occlusion (CTO) percutaneous coronary intervention (PCI) has received limited study.

Methods: We analyzed the baseline clinical and angiographic characteristics and procedural outcomes of 82 CTO PCIs that required IVL at 14 centers between 2020 and 2022.

Results: During the study period, IVL was used in 82 of 3301 (2.

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A 66-year-old man with a ramus chronic total occlusion had escalating angina and a high-risk stress test. Coronary angiography the day of his planned ramus chronic total occlusion percutaneous coronary intervention demonstrated a large left main aneurysm. He underwent bypass with left internal mammary artery left anterior descending and failed saphenous vein graft ramus, followed by successful covered stent placement from left main into left circumflex and ramus chronic total occlusion percutaneous coronary intervention.

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Coronary artery disease continues to advance resulting in the development of high-risk percutaneous interventions. This includes treatment of patients with multivessel disease, unprotected left main, acute myocardial infarction complicated by cardiogenic shock, and depressed left ventricular ejection fraction. As a result, mechanical circulatory support devices have evolved but require an understanding of patient hemodynamics, device mechanics, and access management.

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This article highlights the advantages and disadvantages of transradial arterial (TRA) access for a variety of presentations including acute coronary syndromes; cardiogenic shock; unprotected left main, heavily calcified coronaries; bifurcations; and chronic total occlusions. It includes techniques for overcoming challenges of using TRA access, including spasm and the need for larger bore guides. In addition, the authors review the use of ultrasound for access, percutaneous hemodynamic support via axillary approach, and tips and tricks to performing right heart catheterizations from the antecubital vein.

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