Publications by authors named "Brett Wanamaker"

Article Synopsis
  • Coronary chronic total occlusion (CTO) increases the risk of ventricular arrhythmias (VAs), which can lead to serious heart issues like ventricular tachycardia and sudden cardiac death.
  • A meta-analysis reviewing nine studies with over 3000 participants found that patients with CTOs have a 2.25 times higher risk of VAs compared to those with coronary artery disease (CAD) without CTOs.
  • The analysis also suggested that percutaneous coronary intervention (PCI) for CTOs significantly lowers the risk of VAs compared to patients managed with optimal medication alone, indicating the potential benefits of revascularization.
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Background: A previous single-center study of patients with myocardial infarction (MI) showed that platelet FcγRIIa (pFCG) can distinguish patients at higher and lower risk of subsequent MI, stroke, and death.

Objectives: The authors performed an 800-patient 25-center study to validate the prognostic implications of pFCG.

Methods: Patients with type 1 MI (ST-segment elevation and non-ST-segment elevation) were enrolled in a prospective noninterventional trial during their index hospitalization.

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Background: Coronary injury after blunt chest trauma is rare. This case illustrates the importance of evaluating for coronary injury after any episode of blunt chest wall trauma.

Case Summary: We review the case of a 27-year-old male who presented with acutely decompensated heart failure several months after a motor vehicle accident with chest wall impact from the steering wheel.

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Positron emission tomography myocardial perfusion imaging (PET MPI) is a noninvasive diagnostic test capable of detecting coronary artery disease, structural heart disease, and myocardial flow reserve (MFR). We aimed to determine the prognostic utility of PET MPI to predict post-liver transplant (LT) major adverse cardiac events (MACE). Among the 215 LT candidates that completed PET MPI between 2015 and 2020, 84 underwent LT and had 4 biomarker variables of clinical interest on pre-LT PET MPI (summed stress and difference scores, resting left ventricular ejection fraction, global MFR).

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Background: International registry comparisons provide insight into regional differences in clinical practice patterns, procedural outcomes, and general trends in population health and resource utilization in percutaneous coronary intervention (PCI). We sought to compare data from a state-wide PCI registry in the United States with a national registry from the United Kingdom (UK).

Methods: We analyzed all PCI cases from the Blue Cross Blue Shield of Michigan Cardiovascular Consortium and the British Cardiovascular Intervention Society registries from 2010 to 2017.

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Background: The COVID-19 pandemic has severely impacted healthcare delivery and patient outcomes globally.

Aims: We aimed to evaluate the influence of the COVID-19 pandemic on the temporal trends and outcomes of patients undergoing percutaneous coronary intervention (PCI) in Michigan.

Methods: We compared all patients undergoing PCI in the BMC2 Registry between March and December 2020 ("pandemic cohort") with those undergoing PCI between March and December 2019 ("pre-pandemic cohort").

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Mechanical complications of acute myocardial infarction are infrequent in the modern era of primary percutaneous coronary intervention, but they are associated with high mortality rates. Papillary muscle rupture with acute severe mitral regurgitation is one such life-threatening complication that requires early detection and urgent surgical intervention. ().

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The pulse amplitude ratio (PAR), the ratio of pulse pressure at the end of the Valsalva maneuver to before the onset, correlates with cardiac filling pressure. We have developed a handheld device that uses finger photoplethysmography to measure PAR and estimate left ventricular end diastolic pressure (LVEDP). Patients hospitalized with heart failure (HF) performed three 10-second trials of a standardized Valsalva maneuver (at 20 mm Hg measured via pressure transducer), while photoplethysmography waveforms were recorded, at admission and discharge.

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Background Troponin release in ST-segment-elevation myocardial infarction (STEMI) has predictable kinetics with early levels reflective of ischemia duration. Little research has examined the value of admission troponin levels in STEMI patients undergoing primary percutaneous coronary intervention. We investigated the relationship between troponin on presentation and mortality in a large, real-world cohort of STEMI patients undergoing primary percutaneous coronary intervention.

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Atrial arrhythmias, including atrial fibrillation and atrial flutter, are common in patients with pulmonary hypertension and are closely associated with clinical decompensation and poor clinical outcomes. The mechanisms of arrhythmogenesis and subsequent clinical decompensation are reviewed. Practical implications and current evidence for the management of atrial arrhythmias in patients with pulmonary hypertension are summarised.

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Alzheimer dementia (AD) is an important clinical problem that appears to be closely tied to comorbid cardiovascular disease, making it a relevant topic for the clinical cardiologist. Determinants of cardiovascular health, especially midlife dyslipidemia, are associated with an increased risk of dementia based on molecular and epidemiologic data. Given the potential role of dyslipidemia in the development of dementia, statins have been investigated as potential therapeutic options to slow or prevent disease.

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Article Synopsis
  • A study investigated the prevalence of postoperative delirium in elderly patients immediately after general anesthesia and its impact on recovery outcomes.
  • Out of 91 patients aged 70 and older, 45% experienced delirium in the postanesthesia care unit (PACU), affecting their cognitive function compared to their baseline.
  • The results showed that early delirium correlated with worse discharge outcomes and increased likelihood of requiring institutional care, highlighting the need for monitoring and management of delirium in elderly surgical patients.
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Article Synopsis
  • * Insulin treatment significantly increases the expression and activity of the enzyme 5α-reductase in granulosa cells, which are important for ovarian function.
  • * These findings suggest that high insulin levels may contribute to elevated 5α-reduced androgens, potentially impairing the growth and proliferation of granulosa cells and negatively affecting follicle growth and ovulation.
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