Publications by authors named "Aung Ye Oo"

Ischaemic spinal cord injury remains a significant challenge in thoracoabdominal aortic repairs. Modern techniques have reduced spinal cord injury rates yet managing patients during and after thoracoabdominal aortic repairs remains complex. This article outlines our comprehensive approach to the prevention of spinal cord injuries in open thoracoabdominal aortic repair operations, focusing on the placement of cerebrospinal fluid drain and intraoperative strategies to enhance spinal cord protection.

View Article and Find Full Text PDF

Objective: We reviewed the available literature on patients undergoing aortic repair for acute type A aortic dissection (ATAAD) with either aortic root preservation (RP) or root replacement (RR).

Methods: Original research studies that evaluated short- and mid-term hemostatic properties of RP versus RR groups were identified, from 2000 to 2024. Intraoperative transfusions of red blood cells (RBCs), reoperation for bleeding, strategy of hemostatic sealing of the anastomosis in root repair following the reapproximation of the dissected layers of the aortic wall (with/without biological glue), and operative mortality were the primary endpoints.

View Article and Find Full Text PDF

Objective: To evaluate the outcomes achieved after implementing a treatment strategy for non-A non-B (NANB) (B 1-2 D according to the latest consensus document of the Society of Vascular Surgery (SVS) and Society of Thoracic Surgeons (STS) acute aortic dissection (AAD)).

Methods: This retrospective observational study adhered to the Strengthening the Reporting of Observational Studies in Epidemiology (STROBE) checklist. All cases of NANB AAD (B 1-2 D) treated at our institution between January 2016 and December 2022 were reviewed.

View Article and Find Full Text PDF

Background: Spinal cord ischemia (SCI) is a potentially devastating complication of thoracic endovascular aortic repair (TEVAR) and fenestrated-branched endovascular aortic repair (F-BEVAR). The aim of this systematic review was to evaluate the efficacy of neuromonitoring modalities to mitigate the risk of SCI during TEVAR and F-BEVAR procedures.

Methods: Following the PRISMA guidelines, we conducted a detailed literature search of databases including PubMed, MEDLINE via Ovid, Embase, Scopus, and Cochrane CENTRAL, from 1998 to the present.

View Article and Find Full Text PDF

Background: To investigate impact of frozen elephant trunk (FET) on long-term distal aortic remodeling in acute A aortic dissection (AAD) according to the latest recommended standards from the Society for Vascular Surgery (SVS)/Society of Thoracic Surgeons (STS).

Methods: Clinical data and imaging of patients who underwent FET to treat acute AAD over the last 8 years were retrospectively reviewed. Patients were included if a pre and postoperative computed angio tomographies at least 30 days from surgery was available for comparison.

View Article and Find Full Text PDF

Background: This systematic review examines the occurrence and implications of resistance to primary antiplatelet agents, aspirin and clopidogrel, often utilised in patients undergoing coronary artery bypass grafting (CABG), alongside the methodologies for assessment of such resistance.

Methods: An extensive literature search across various databases such as PubMed, MEDLINE via Ovid, Embase, and Cochrane CENTRAL until May 2024 was conducted to identify studies evaluating antiplatelet resistance in on-pump and off-pump CABG patients. Following quality assessment, only high-quality studies were incorporated into this review.

View Article and Find Full Text PDF

Objectives: The aim of this multicentre study was to demonstrate the safety and clinical performance of E-vita OPEN NEO Stent Graft System (Artivion, Inc.) in the treatment of aneurysm or dissection, both acute and chronic, in the ascending aorta, aortic arch and descending thoracic aorta.

Methods: In this observational study of 12 centres performed in Europe and in Asia patients were enrolled between December 2020 and March 2022.

View Article and Find Full Text PDF

Introduction: Compliance mismatch between the aortic wall and Dacron Grafts is a clinical problem concerning aortic haemodynamics and morphological degeneration. The aortic stiffness introduced by grafts can lead to an increased left ventricular (LV) afterload. This study quantifies the impact of compliance mismatch by virtually testing different Type-B aortic dissection (TBAD) surgical grafting strategies in patient-specific, compliant computational fluid dynamics (CFD) simulations.

View Article and Find Full Text PDF

Background: Post-operative atrial fibrillation (AF) is the most common complication following cardiac surgery. There has been extensive exploration of clinical variables, imaging, and biomarkers to predict its occurrence after cardiac surgery. In this study, we examine the emerging biomarkers B-type natriuretic peptide (BNP) and N-terminal proBNP (NT-proBNP) to assess their pre-operative values and correlations with the occurrence of post-operative AF in patients undergoing cardiac surgery.

View Article and Find Full Text PDF

This prospective study explores health-related quality of life (EQ-5D-5L), event-related distress (IES-R), and depression (CES-D) after cardiac surgery during three COVID-19 lockdowns imposed in the UK. Overall, 253 patients (Lockdown 1 n = 196; 2 n = 45; 3 n = 12) completed the above-mentioned questionnaires at baseline, 1 week after discharge, and 6 weeks and 6 and 12 months after surgery. While EQ-5D-5L values were similar across all cohorts, those who underwent surgery during Lockdowns 2 and 3 had higher IES-R scores at 1 year and higher IES-R and CES-D baseline scores, respectively.

View Article and Find Full Text PDF

Open surgery remains the gold standard for the treatment of the thoracoabdominal aorta. The rising number of endovascularly treated patients comes with an increase in the number of patients who require secondary open interventions due to the complex nature of the aortic disease or to treat endovascular complications. We describe our current approach to secondary open extent II thoracoabdominal aortic repair in patients with prior endovascular repair.

View Article and Find Full Text PDF

Herpes simplex virus (HSV) pneumonitis is rare after cardiac surgery. A 36-year-old gentleman with ankylosing spondylitis underwent emergency surgery for a complex aortic aneurysmal disease. Preoperative treatment of aortitis with antitumor necrosis factor and steroid medication and surgical stress including cardiopulmonary bypass potentially created an immunosuppressive state and reactivation of undiagnosed HSV.

View Article and Find Full Text PDF

Retrograde type A aortic dissection (RTAAD) can be spontaneous or secondary to the instrumentation of the descending and thoraco-abdominal aorta. It has anatomical differences compared to antegrade type A aortic dissection that impact the management and prognosis. Treatment is not standardized.

View Article and Find Full Text PDF
Article Synopsis
  • - This video case report discusses a patient who underwent a redo sternotomy and surgery for aortic root and arch replacement after complications from an initial repair of a type A aortic dissection, which included severe malperfusion and paraplegia.
  • - The initial surgical procedure involved complicated emergency endovascular repairs, but the patient later developed severe aortic regurgitation, leading to the need for the second surgery to remove the stent grafts and replace the affected areas.
  • - During the redo surgery, techniques like antegrade cerebral perfusion and the use of specialized grafts were employed, resulting in a successful outcome and improved imaging post-operation, demonstrating the complexity and necessity of careful planning in such cases.
View Article and Find Full Text PDF

Aims: The outbreak of COVID-19 was potentially stressful for everyone and possibly heightened in those having surgery. We sought to explore the impact of the pandemic on recovery from cardiac surgery.

Methods And Results: A prospective observational study of 196 patients who were ≥18years old undergoing cardiac surgery between March 23 and July 4, 2020 (UK lockdown) was conducted.

View Article and Find Full Text PDF

Objective: The formation of postaortic coarctation aneurysms (pCoAA) is well-described in the literature and carries a significant risk of rupture and death. Treatment strategies include open surgical, hybrid, and endovascular repair, depending on the clinical presentation, risk assessment, and anatomy. The aim of this study was to report the early and midterm results of open surgical and endovascular repair of pCoAA.

View Article and Find Full Text PDF

Objectives: During the worldwide COVID-19 pandemic, elective cardiac surgery was suspended to provide ICU beds for COVID-19 patients and those requiring urgent cardiac surgery. The aim of this study is to assess the effect of the pandemic on outcomes of patients awaiting elective cardiac surgery.

Design: A multi-centre prospective cohort study.

View Article and Find Full Text PDF

A man in his 60s was referred for urgent coronary artery bypass grafting (CABG) procedure following acute coronary syndrome. After induction of general anaesthesia, right jugular venous catheterisation under two-dimensional ultrasound guidance was planned as part of perioperative management. While obtaining vascular access, the pulsatile flow was noted once the dilator was inserted, having to abandon the procedure and immediately apply manual pressure.

View Article and Find Full Text PDF

Blood flow patterns can alter material properties of ascending thoracic aortic aneurysms (ATAA) via vascular wall remodeling. This study examines the relationship between wall shear stress (WSS) obtained from image-based computational modelling with tissue-derived mechanical and microstructural properties of the ATAA wall using segmental analysis. Ten patients undergoing surgery for ATAA were recruited.

View Article and Find Full Text PDF

Background: Open surgical repair remains the gold standard for treatment of thoracoabdominal aortic aneurysm (TAAA). Surgery aims to replace the whole length of the diseased distal aorta while protecting the spinal cord and the visceral organs to limit ischemia-related complications. The substantial associated surgical risks, including death, paraplegia, renal failure requiring permanent dialysis, and respiratory complications leading to prolonged intensive care unit stay, still outweigh the natural history of TAAA with conservative treatment.

View Article and Find Full Text PDF

Background: Early studies conclude patients with Covid-19 have a high risk of death, but no studies specifically explore cardiac surgery outcome. We investigate UK cardiac surgery outcomes during the early phase of the Covid-19 pandemic.

Methods: This retrospective observational study included all adult patients undergoing cardiac surgery between 1st March and 30th April 2020 in nine UK centres.

View Article and Find Full Text PDF

Background: A significant restructuring of the healthcare services has taken place since the declaration of the coronavirus disease 2019 (COVID-19) pandemic, with elective surgery put on hold to concentrate intensive care resources to treat COVID-19 as well as to protect patients who are waiting for relatively low risk surgery from exposure to potentially infected hospital environment.

Methods: Multicentre study, with 19 participating centers, to define the impact of the pandemic on the provision of aortovascular services and patients' outcomes after having adapted the thresholds for intervention to guarantee access to treatment for emergency and urgent conditions. Retrospective analysis of prospectively collected data, including all patients with aortovascular conditions admitted for surgical or conservative treatment from the 1st March to the 20th May 2020.

View Article and Find Full Text PDF

Background And Purpose: The proportion of patients undergoing coronary artery bypass surgery (CABG) with a history of smoking is increasing. The aim of this study was to examine the effect of smoking on outcomes following CABG.

Patients And Methods: 6,367 consecutive patients who underwent CABG between April 1997 and March 2003 were analyzed retrospectively.

View Article and Find Full Text PDF