A5057398195- Cardiac Imaging and Diagnostics
- Advanced MRI Techniques and Applications
- Cardiovascular Function and Risk Factors
- Cardiac Valve Diseases and Treatments
- Cardiac Arrest and Resuscitation
- Cardiac Structural Anomalies and Repair
- Cardiac, Anesthesia and Surgical Outcomes
- Cardiac and Coronary Surgery Techniques
- Acute Myocardial Infarction Research
- Ultrasound and Hyperthermia Applications
- Mechanical Circulatory Support Devices
- Heart Failure Treatment and Management
- Advanced X-ray and CT Imaging
- Cardiac tumors and thrombi
- Palliative Care and End-of-Life Issues
- Coronary Interventions and Diagnostics
- Cardiac Ischemia and Reperfusion
- Disaster Response and Management
- Cardiac Health and Mental Health
- Cardiac pacing and defibrillation studies
- Infective Endocarditis Diagnosis and Management
- Elasticity and Material Modeling
- Phonocardiography and Auscultation Techniques
- Health Literacy and Information Accessibility
- Cardiovascular Health and Disease Prevention
Nelson Marlborough Institute of Technology
2014-2025
Nelson Hospital
2018-2021
Waikato District Health Board
2015
University of Oxford
2007-2014
Institute of Cardiology
2014
Southampton General Hospital
2012
Flinders Medical Centre
2008-2012
Flinders University
2012
Resonance Research (United States)
2012
Brigham and Women's Hospital
2012
Obesity is characterized by impaired cardiac energetics, which may play a role in the development of diastolic dysfunction and inappropriate shortness breath. We assessed whether, obesity, derangement energetics function further altered during acute stress.Normal-weight (body mass index, 22±2 kg/m(2); n=9-17) obese 39±7 n=17-46) subjects underwent assessment left ventricular (cine magnetic resonance imaging volume-time curve analysis) (phosphocreatine/ATP ratio; (31)P-magnetic spectroscopy)...
<h3>Aims:</h3> Myocardial revascularisation improves outcomes in patients with coronary artery disease. However, these procedures may themselves cause irreversible myocardial injury. The prognostic value of procedural injury is uncertain. <h3>Methods and results:</h3> We quantified necrosis using delayed enhancement cardiovascular magnetic resonance imaging (DE-CMR) 152 consecutive before shortly after percutaneous intervention (PCI) or bypass graft (CABG). primary endpoint was defined as...
The new gold standard for myocardial viability assessment is late gadolinium enhancement-cardiovascular magnetic resonance (LGE-CMR); this technique has demonstrated that the transmural extent of scar predicts segmental functional recovery. We now asked how number viable and viable+normal, segments predicted recovery global left ventricular (LV) function in patients undergoing CABG. Finally, we examined which threshold scarring best LV
<h3>Objectives</h3> To examine, using cardiac magnetic resonance (CMR), the utility of biomarkers for determination myocyte necrosis and function after coronary artery bypass grafting (CABG), to test recently updated guidelines diagnosis postoperative myocardial infarction (type V MI). <h3>Methods results</h3> Forty patients included in a single-centre randomised trial two surgical techniques performing CABG underwent serial assessment with CMR biochemical markers. Cine delayed enhancement...
Background— The pathophysiology of chest pain in patients with cardiac syndrome X remains controversial. Advances perfusion imaging cardiovascular magnetic resonance (CMR) now enable absolute quantification regional myocardial blood flow (MBF). Furthermore, oxygen level-dependent (BOLD) or oxygenation-sensitive CMR provides the unprecedented capability to assess oxygenation. We hypothesized that combined assessment and oxygenation could clarify whether show evidence ischemia (reduced...
Survival from out-of-hospital cardiac arrest (OHCA) is improved when public access defibrillators are used. Areas of socioeconomic deprivation may have higher rates OHCA and thus a greater demand for defibrillators. We aimed to determine if there was relationship between factors, the geographic distribution (PADs) incidence OHCA.Socioeconomic data obtained Census-based 2013 Index Deprivation. Spatial information PADs New Zealand PAD database (AED Locations) in 2016 2018. Location St John...
Background— Off-pump CABG (OPCABG) results in better preservation of left ventricular function the perioperative period than conventional on-pump (ONCABG); however, evidence is conflicting as to effect OPCABG and ONCABG on right (RV) function, possibly because complexity involved measuring this. Methods Results— In a single-center randomized pilot study, 60 patients with normal undergoing were randomly assigned or ONCABG. Patients underwent cardiac magnetic resonance imagine for assessment...
Beating heart coronary artery bypass grafting (CABG) improves early postoperative cardiac function in patients with normal ventricular function, but its effect impaired is uncertain. We compared a novel hybrid technique of on-pump beating CABG (ONBEAT) conventional (ONSTOP) function.In single-center randomized trial, 50 were randomly assigned to ONBEAT or ONSTOP. Patients underwent magnetic resonance imaging for and delayed hyperenhancement later after surgery. Serial assessment biochemical...
The terms cardiopulmonary resuscitation (CPR) and have been used non-specifically interchangeably. To provide clarity transparency to clinicians patients when facilitating conversations about what treatments are warranted wanted if clinical deterioration occurs in the hospital, CPR must be reframed as its original, official definition New Zealand: chest compressions rescue breaths. Key messages • has become shorthand for resuscitation, with Resuscitation measures preserve life organ function...
Previous studies have documented the prevalence of abdominal aortic aneurysm (AAA) during transthoracic echocardiography, but effect such screening on subsequent vascular interventions remains unclear.This study aimed to determine utility opportunistic selective for AAA in a contemporary large series patients having echocardiography.Subjects aged 50 years or older echocardiography had scanning infrarenal aorta consecutive 10 403 men and women.The subjects mean age 70.2 ± 10.7 years, 54.1%...
Background There is little existing research on the role that secondary care letters have in ensuring patient understanding of chronic health conditions. Aim To determine whether minimising use medical terminology correspondence improved and anxiety/depression scores. Methods A single‐centre, non‐blinded, randomised crossover design assessed literacy, EQ‐5D scores impact ‘translated’ letter doctor's professionalism, patient's relationship with their general practitioner ( GP ) perceived...
Cardiopulmonary resuscitation (CPR) is internationally defined as chest compressions and rescue breaths, a subset of resuscitation. First used for out-of-hospital cardiac arrest, CPR now frequently in-hospital arrest (IHCA) with different causes outcomes.This paper aims to describe clinical understanding the role perceived outcomes IHCA.An online survey secondary care staff involved in was conducted, focussing on definitions CPR, features do-not-attempt-CPR conversations patients case...
Objective: Obtaining new details of radial motion left ventricular (LV) segments using velocity-encoding cardiac MRI. Methods: Cardiac MR examinations were performed on 14 healthy volunteers aged between 19 and 26 years. Cine images for navigator-gated phase contrast velocity mapping acquired a black blood segmented κ-space spoiled gradient echo sequence with temporal resolution 13.8 ms. Peak systolic diastolic velocities as well curves obtained 16 segments. Results: Significant differences...
Obtaining new details for rotational motion of left ventricular (LV) segments using velocity encoding cardiac MR and correlating the regional patterns to LV insertion sites.Cardiac examinations were performed on 14 healthy volunteers aged between 19 26 years. Peak velocities circumferential curves obtained 16 segments.Reduced peak clockwise anteroseptal (i.e. Segments 2 8) counterclockwise inferoseptal 3 9) most prominent findings. The observations can be attributed sites into right...