Publications by authors named "Arminder Jassar"

Background: Guidelines for treating ascending thoracic aortic aneurysms (ATAA) are largely based on single-center studies. To understand factors influencing patient selection for surgery vs surveillance, patient and aneurysm characteristics were compared for patients in the randomized and registry arms of a large prospective, multicenter, multinational trial.

Methods: TITAN:SvS (Treatment in Thoracic Aortic aNeurysm: Surgery versus Surveillance) is a large prospective multicenter study of patients with ATAA between 5.

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Background: The choice of transcatheter aortic valve replacement (TAVR) prosthesis is crucial in optimizing short- and long-term outcomes. The objective of this study was to conduct a meta-analysis comparing outcomes of third-generation balloon-expandable valves (BEV) vs self-expanding valves (SEV).

Methods: Electronic databases were searched from inception to June 2023 for studies comparing third-generation BEV vs SEV.

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Background: This study examined the association between cardiopulmonary bypass (CPB) hematocrit and postoperative acute renal failure (ARF) in patients undergoing aortic arch surgery with hypothermic circulatory arrest.

Methods: The Society of Thoracic Surgeons Adult Cardiac Surgery Database was queried from 2011 to 2019 for patients undergoing aortic arch surgery with hypothermic circulatory arrest. A multivariable logistic regression model estimated the adjusted odds of postoperative ARF on the basis of CPB hematocrit.

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Background: Outcomes after hemiarch repair for acute DeBakey type I aortic dissection (ADTI) remain unfavorable, with high rates of major adverse events and negative aortic remodeling. The PERSEVERE study evaluates the safety and effectiveness of the AMDS Hybrid prosthesis, a novel bare metal stent, in patients presenting with preoperative malperfusion.

Methods: PERSEVERE is a prospective single-arm investigational study conducted at 26 sites in the United States.

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Article Synopsis
  • Recent advancements in transcatheter technologies have led to updated guidelines, increasing treatment options for aortic stenosis.
  • New "rapid deployment" or "sutureless valves" have been developed to simplify valve implantation and reduce surgery time by eliminating the need for sutures.
  • The effectiveness of these sutureless valves compared to traditional surgical methods and TAVR is still under discussion, with the review focusing on existing evidence and outcomes for each method.
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Objectives: Traditional criterion for intervention on an asymptomatic ascending aortic aneurysm has been a maximal aortic diameter of 5.5 cm or more. The 2022 American College of Cardiology/American Heart Association aortic guidelines adopted cross-sectional aortic area/height ratio, aortic size index, and aortic height index as alternate parameters for surgical intervention.

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Objective: To evaluate whether a machine-learning algorithm (ie, the "NightSignal" algorithm) can be used for the detection of postoperative complications before symptom onset after cardiothoracic surgery.

Background: Methods that enable the early detection of postoperative complications after cardiothoracic surgery are needed.

Methods: This was a prospective observational cohort study conducted from July 2021 to February 2023 at a single academic tertiary care hospital.

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A 71-year-old male presented with 1-day history of back pain. Imaging displayed an enlarging thoracic aortic aneurysm with gas in the aortic wall. Blood cultures grew .

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Objectives: The prevalence and aetiology of acute aortic dissection type A (AADA) in patients ≤30 years is unknown. The aims of this clinical study were to determine the prevalence and potential aetiology of AADA in surgically treated patients ≤30 years and to evaluate the respective postoperative outcomes in this selective group of patients in a large multicentre study.

Methods: Retrospective data collection was performed at 16 participating international aortic institutions.

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• Percutaneous closure of ascending aortic pseudoaneurysms is feasible in selected patients. • Procedural planning with multimodality imaging and multidisciplinary discussion is key. • TEE can be instrumental for intraprocedural guidance.

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Objective: Approximately one-quarter of patients with acute type A aortic dissection (TAAD) present with concomitant malperfusion of coronary arteries, mesenteric circulation, lower extremities, kidneys, brain, and/or coma. It is generally accepted that TAAD patients who present with malperfusion experience higher mortality rates than patients without, although how specific malperfusion syndromes, alone or in combination, affect mortality is not well described.

Methods: The International Registry of Acute Aortic Dissection database was queried for patients who underwent surgical repair of TAAD.

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Background: Collaboration among cardiac surgeons and radiologists is essential to fully leverage advanced imaging technologies and improve the care of cardiac surgery patients. In this review, a cardiac surgeon and cardiovascular radiologist discuss imaging pearls and considerations in aortic dissection cases.

Methods: The surgeon and the radiologist discuss imaging considerations in two aortic dissection cases.

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Background: Evolution of aortic intramural hematoma (IMH) over time may range from resolution to degeneration and is difficult to predict. We sought to measure differences in contrast attenuation between arterial and delayed phase computed tomography angiography (CTA) images within the IMH as a surrogate of hematoma blood flow to predict resolution versus aortic growth and/or adverse outcomes.

Methods: IMH institutional data were gathered from 2005-2020.

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Background Many patients with severe aortic stenosis (AS) and an indication for aortic valve replacement (AVR) do not undergo treatment. The reasons for this have not been well studied in the transcatheter AVR era. We sought to determine how patient- and process-specific factors affected AVR use in patients with severe AS.

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The incidence of injection drug use-associated infective endocarditis has been increasing rapidly over the last decade. Patients with drug use-associated infective endocarditis present an increasingly common clinical challenge with poor long-term outcomes and high reinfection and readmission rates. Their care raises issues unique to this population, including antibiotic selection and administration, indications for and ethical issues surrounding surgical intervention, and importantly management of the underlying substance use disorder to minimize the risk of reinfection.

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Pericardial-esophageal fistula and/or atrial-esophageal fistula after cardiac ablation is nearly universally fatal if not detected and treated expeditiously. This condition should be assumed and ruled out in anyone with a recent history of cardiac ablation presenting with signs of sepsis, pneumomediastinum, pneumopericardium, or chest pain. Computed tomography scan of the chest is a rapid and a sensitive diagnostic modality.

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Background: Consensus guidelines recommend multidisciplinary models to manage infective endocarditis, yet often do not address the unique challenges of treating people with drug use-associated infective endocarditis (DUA-IE). Our center is among the first to convene a Drug Use Endocarditis Treatment (DUET) team composed of specialists from Infectious Disease, Cardiothoracic Surgery, Cardiology, and Addiction Medicine.

Methods: The objective of this study was to describe the demographics, infectious characteristics, and clinical outcomes of the first cohort of patients cared for by the DUET team.

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Article Synopsis
  • Despite an increase in aortic valve replacement (AVR) procedures for aortic stenosis (AS), a significant number of patients who need the treatment remain untreated, especially those in low gradient subgroups.
  • The study analyzed data from 10,795 patients over 18 years to determine trends in AVR utilization based on various clinical indications and AS classifications.
  • While the overall number of AVR procedures increased, the proportion of patients who received AVR, particularly in low gradient categories, highlighted persistent undertreatment issues among those with severe AS.
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Background: Ischemic gastrointestinal complications (IGIC) following cardiac surgery are associated with high morbidity and mortality and remain difficult to predict. We evaluated perioperative risk factors for IGIC in patients undergoing open cardiac surgery.

Methods: All patients that underwent an open cardiac surgical procedure at a tertiary academic center between 2011 and 2017 were included.

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