Publications by authors named "Alexander Truesdell"

While there has been a proliferation of training and practice paradigms in the realm of noncoronary interventions, coronary disease remains the predominant pathology necessitating interventional cardiology expertise. The landscape of coronary disease has also experienced a significant transformation due to rapidly evolving technologies, clinical application of mechanical circulatory support and other device innovations, and increasing acuity and complexity of patients. The modern interventional cardiologist is subject to challenges including decreasing coronary procedural volume, need to maintain clinical and financial productivity, and often also requirements of continued scholastic pursuit.

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This state-of-the-art review describes the potential etiologies, pathophysiology, and management of mixed shock in the context of a proposed novel classification system. Cardiogenic-vasodilatory shock occurs when cardiogenic shock is complicated by inappropriate vasodilation, impairing compensatory mechanisms, and contributing to worsening shock. Vasodilatory-cardiogenic shock occurs when vasodilatory shock is complicated by myocardial dysfunction, resulting in low cardiac output.

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The European Society of Cardiology recently updated guidelines on the management of chronic coronary syndromes upgrading the use of intracoronary imaging for complex percutaneous coronary interventions (PCI) to a class 1A recommendation. It is essential that the interventional community appreciate the additive value of intracoronary imaging over angiography alone-not only to obtain optimal acute PCI results but also to improve longer-term cardiovascular outcomes. The purpose of this manuscript is to review the latest evidence that informed the recent guideline recommendations and expand on the specific role of the different imaging modalities before, during, and after PCI.

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Background: Multidisciplinary cardiogenic shock (CS) programs have been associated with improved outcomes, yet practical guidance for developing a CS program is lacking.

Methods: A survey on CS program development and operational best practices was administered to 12 institutions in diverse sociogeographic regions and practice settings. Common steps in program development were identified.

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Article Synopsis
  • In a study analyzing patients during high-risk percutaneous coronary intervention (HR-PCI), nearly half (49%) experienced loss of pulse pressure (LOPP), defined as a mean pulse pressure below 20 mm Hg for 5 seconds or more.
  • Patients with LOPP demonstrated significantly lower baseline systolic and mean arterial blood pressures and a higher heart rate compared to those without LOPP.
  • The occurrence of LOPP was linked to a higher incidence of serious complications including major adverse cardiac events, acute kidney injury, and death within 90 days, with low systolic blood pressure and cardiomyopathy identified as strong predictors of LOPP.
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  • The study investigates the use of guideline-directed medical therapy (GDMT) in patients who survive cardiogenic shock (CS) with heart failure and reduced left ventricular ejection fraction (HFrEF) based on data from a single-center shock registry.
  • Among 520 patients treated for CS, 185 (35.6%) had HFrEF upon discharge, with a median age of 64 years; 41% experienced shock due to acute myocardial infarction, while the rest had heart failure-related shock.
  • At discharge, a substantial portion of patients were prescribed GDMT, including beta-blockers (78%), ACE inhibitors/ARBs (58%), and mineralocorticoid receptor antagonists (55%), yet 10
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Background: Mitral valve regurgitation (MR) is associated with worse outcomes in patients undergoing percutaneous coronary intervention (PCI). We sought to evaluate outcomes of Impella-supported high-risk PCI (HRPCI) patients according to MR severity.

Methods: Patients from the PROTECT III study undergoing Impella-supported HRPCI were stratified into 4 groups according to MR severity: No or trace MR, mild MR, moderate MR, and severe MR.

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Background: There are limited data on volume-outcome relationships in acute myocardial infarction (AMI) with cardiogenic shock (CS).

Objectives: In this study, the authors sought to evaluate the association between hospital percutaneous coronary intervention (PCI) volume and readmission after AMI-CS.

Methods: Adult AMI-CS patients were identified from the Nationwide Readmissions Database for 2016-2019 and were categorized into hospital quartiles (Q1 lowest volume to Q4 highest) based on annual inpatient PCI volume.

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Development of ventricular failure and pulmonary edema is associated with a worse prognosis in ST-elevation myocardial infarction (STEMI). We aimed to evaluate the prognostic ability of a novel classification combining lung ultrasound (LUS) and left ventricular outflow tract (LVOT) velocity time integral (VTI) in patients with STEMI. LUS and LVOT-VTI were performed within 24 h of admission in STEMI patients.

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Article Synopsis
  • Over 1 million transcatheter cardiovascular procedures are performed yearly in the U.S., requiring interventional cardiologists to have specialized skills for safe execution.
  • There are significant variations in vascular access techniques leading to complications, highlighting the need for standardized practices in the field.
  • This review focuses on redefining complications, best practices for access and closure methods, and identifying research gaps to improve patient outcomes during these procedures.
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  • Cardiogenic shock (CS) is a serious condition with various causes and can lead to high rates of illness and death (35-50%), even with modern treatments.
  • Recent research has focused on better recognition and management of CS through standardized protocols and tailored use of temporary mechanical support, which have shown promising results.
  • This review covers the underlying mechanisms of CS, emerging definitions and treatment strategies, and highlights the need for more studies to fill knowledge gaps and improve patient outcomes.
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  • The study examined sex-related differences in outcomes for patients with cardiogenic shock (CS) using a standardized team-based approach (STBA), focusing on 520 patients over three years.
  • Women with acute myocardial infarction (AMI) showed greater baseline severity, while those with heart failure (HF) more frequently faced cardiac arrest and required more aggressive treatments compared to men.
  • Despite these findings, there were no significant differences in in-hospital mortality or major adverse events between sexes, suggesting the STBA may help reduce historical disparities in outcomes.
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Background: How diabetes mellitus (DM), race/ethnicity, and sex impact ischemic events following coronary artery stent procedures is unknown.

Methods: Using the PLATINUM Diversity and PROMUS Element Plus Post-Approval Pooled Study (N = 4184), we examined the impact of race/ethnicity, sex, and DM on coronary stent outcomes. Primary outcome was 1-year major adverse cardiac events (MACE) (MACE composite: death, myocardial infarction [MI], and target vessel revascularization).

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Coronary chronic total occlusions (CTO) are present in up to one-third of patients with coronary artery disease (CAD). It is thus essential for all clinical cardiologists to possess a basic awareness and understanding of CTOs, including optimal evaluation and management. While percutaneous coronary intervention (PCI) for CTO lesions has many similarities to non-CTO PCI, there are important considerations pertaining to pre-procedural evaluation, interventional techniques, procedural complications, and post-procedure management and follow-up unique to patients undergoing this highly specialized intervention.

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Background: There are limited data on the clinical characteristics and outcomes of patients who require prolonged mechanical circulatory support (MCS) after Impella-supported high-risk percutaneous coronary intervention (HR-PCI).

Aims: The aim of this study is to describe the contemporary clinical characteristics, outcomes, and predictors associated with prolonged MCS support after assisted HR-PCI.

Methods: Patients enrolled in the prospective, multicentre, clinical endpoint-adjudicated PROTECT III study who had undergone HR-PCI using Impella were evaluated.

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Article Synopsis
  • The study evaluated outcomes for high-risk PCI patients who required pLVAD support, focusing on their LV ejection fraction (LVEF).
  • Patients were categorized based on LVEF levels and assessed for major complications and mortality rates after the procedure.
  • Results showed that complications were low across all LVEF groups, but higher LVEF correlated with better outcomes at 90 days and 1 year post-procedure.
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Background: Acute myocardial infarction complicated by cardiogenic shock (AMI-CS) is associated with significant morbidity and mortality. Mechanical circulatory support (MCS) devices increase systemic blood pressure and end organ perfusion while reducing cardiac filling pressures.

Methods And Results: The National Cardiogenic Shock Initiative (NCT03677180) is a single-arm, multicenter study.

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  • A study aimed to compare the effectiveness of catheter-directed thrombolysis (CDT) combined with systemic anticoagulation (SA) versus SA alone for managing intermediate-risk pulmonary embolism (PE).
  • The research analyzed 15 studies involving over 10,500 patients and found that the combination treatment (CDT + SA) led to significantly lower rates of in-hospital and long-term mortality compared to SA alone.
  • No significant difference in major or minor bleeding incidents was observed between the two treatment methods, suggesting that CDT + SA is safer while providing better survival outcomes.
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Technological and procedural innovations presently permit the safe and effective performance of increasingly complex percutaneous coronary interventions, while new mechanical circulatory support devices offer circulatory and ventricular support to patients with severely reduced left ventricular systolic function and deranged cardiovascular hemodynamics. Together, these advances now permit the application of complex percutaneous coronary interventions to higher-risk patients who might otherwise be left untreated. Increasing observational data support the use of mechanical circulatory support in appropriate complex and high-risk patients as part of a larger multidisciplinary heart team treatment plan.

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