1
|
Shindell D, Hunter R, Faluvegi G, Parsons L. Premature Deaths Due To Heat Exposure: The Potential Effects of Neighborhood-Level Versus City-Level Acclimatization Within US Cities. Geohealth 2024; 8:e2023GH000970. [PMID: 38169989 PMCID: PMC10759151 DOI: 10.1029/2023gh000970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/01/2023] [Accepted: 11/02/2023] [Indexed: 01/05/2024]
Abstract
For the population of a given US city, the risk of premature death associated with heat exposure increases as temperatures rise, but risks in hotter cities are generally lower than in cooler cities at equivalent temperatures due to factors such as acclimatization. Those living in especially hot neighborhoods within cities might therefore suffer much more than average if such adaptation is only at the city-wide level, whereas they might not experience greatly increased risk if adjustment is at the neighborhood level. To compare these possibilities, we use high spatial resolution temperature data to evaluated heat-related deaths assuming either adjustment at the city-wide or at the neighborhood scale in 10 large US cities. On average, we find that if inhabitants are adjusted to their local conditions, a neighborhood that was 10°C hotter than a cooler one would experience only about 1.0-1.5 excess heat deaths per year per 100,000 persons. By contrast, if inhabitants are acclimatized to city-wide temperatures, the hotter neighborhood would experience about 15 excess deaths per year per 100,000 persons. Using idealized analyses, we demonstrate that current city-wide epidemiological data do not differentiate between these differing adjustments. Given the very large effects of assumptions about neighborhood-level acclimatization found here, as well as the fact that current literature is conflicting on the spatial scale of acclimatization, more neighborhood-level epidemiological data are urgently needed to determine the health impacts of variations in heat exposure within urban areas, better constrain projected changes, and inform mitigation efforts.
Collapse
Affiliation(s)
- D. Shindell
- Nicholas School of the EnvironmentDuke UniversityDurhamNCUSA
| | - R. Hunter
- Nicholas School of the EnvironmentDuke UniversityDurhamNCUSA
| | - G. Faluvegi
- NASA Goddard Institute for Space Studies and Center for Climate Systems ResearchColumbia UniversityNew YorkNYUSA
| | - L. Parsons
- Nicholas School of the EnvironmentDuke UniversityDurhamNCUSA
- Global ScienceThe Nature ConservancyDurhamNCUSA
| |
Collapse
|
2
|
Wang H, Zhang X, Yang J, Wen Z, Rhee DJ, Sims C, Alsanea F, Lee A, Hunter R, Williamson T, Gunn GB, Frank SJ, Phan J. Proton Based Stereotactic Radiotherapy for Skull Base Patients: Dosimetric Comparison to 4 Modern Radiation Treatment Modalities. Int J Radiat Oncol Biol Phys 2023; 117:e733-e734. [PMID: 37786132 DOI: 10.1016/j.ijrobp.2023.06.2257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Re-irradiation with ablative doses to a smaller target volume and strict critical structure constraint is a challenge for modern radiation planning and delivery systems. Several advanced radiation treatment techniques can be used for fractionated stereotactic ablative radiosurgery (FSRS) in select patients with unresectable recurrent head and neck tumors. In this study, in order to better understand the dosimetry advantage of each technique, we compare the stereotactic treatment plans of our new small spot size Hitachi proton treatment unit to those of CyberKnife stereotactic radiosurgery (CK), Gamma Knife radiosurgery (GK), volumetric modulated arc therapy (VMAT), and MR Linac radiotherapy (MRL). MATERIALS/METHODS Ten FSRS skull base patients treated at our institution using VMAT (n = 5) or GK (n = 5) techniques. Intensity-modulated proton therapy (IMPT) plans were created in Raystation using Monte Carlo dose calculation algorithm. VMAT, CK, GK and MRL plans were generated in RayStation, Accuray Precision, Leksell Gamma Plan, and Monaco treatment planning systems, separately. Planning goals were to achieve the best target coverage of prescribed dose without compromising the critical organs at risk dose volume constraints of the clinical treatment plans. Plans were compared based on percent CTV coverage, Paddick conformity index (PCI), gradient index (GI, V50/V100), dose homogeneity index (HI, (D2-D98)/D50), low dose bath volume (LDBV, ratio of total volume irradiated between 20% and 50% prescription dose and the target volume), beam-on-time (BOT), and mean/maximum doses to brainstems. RESULTS The median target volume was 15.5 cm3 (range 1.0 - 36.23 cm3). The prescription was 45 Gy in 5 fractions for VMAT patients, and 21 - 27 Gy in 3 fractions for GK patients. The comparison of the treatment plans of these 5 delivery modalities was shown in table. All techniques achieved comparable CTV coverage. GI was superior for GK plans and outstanding in CK and IMPT plans. IMPT plans were also outstanding in regard to BOT and PCI. Significantly improved HI, LDBV and brainstem mean doses were achieved in IMPT plans. For adjacent brainstem and other OARs, maximum doses were comparable among all techniques. CONCLUSION In these five advanced radiation therapy modalities, proton therapy SBRT showed dosimetric advantage over other modalities to spare nearby OARs without sacrifice of target coverage. Further studies are needed to utilize this clinical benefit and investigate plan robustness.
Collapse
Affiliation(s)
- H Wang
- Department of Radiation Physics, The University of Texas, MD Anderson Cancer Center, Houston, TX
| | - X Zhang
- The University of Texas MD Anderson Cancer Center, Houston, TX
| | - J Yang
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - Z Wen
- MD Anderson Cancer Center, Houston, TX
| | - D J Rhee
- MD Anderson Cancer Center, Houston, TX
| | - C Sims
- Accuray Incorporated, Sunnyvale, CA
| | - F Alsanea
- Department of Radiation Physics, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - A Lee
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - R Hunter
- MD Anderson Cancer Center, Houston, TX
| | - T Williamson
- Department of Medical Dosimetry, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - G B Gunn
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - S J Frank
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| | - J Phan
- Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX
| |
Collapse
|
3
|
Schrag A, Carroll C, Duncan G, Molloy S, Grover L, Hunter R, Brown R, Freemantle N, Whipps J, Serfaty MA, Lewis G. Antidepressants Trial in Parkinson's Disease (ADepT-PD): protocol for a randomised placebo-controlled trial on the effectiveness of escitalopram and nortriptyline on depressive symptoms in Parkinson's disease. BMC Neurol 2022; 22:474. [PMID: 36510237 PMCID: PMC9743717 DOI: 10.1186/s12883-022-02988-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 11/25/2022] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Depressive symptoms are common in patients with Parkinson's disease and depression is a significant predictor of functional impairment, reduced quality of life and general well-being in Parkinson's disease. Despite the high prevalence of depression, evidence on the effectiveness and tolerability of antidepressants in this population is limited. The primary aim of this trial is to establish the clinical and cost effectiveness of escitalopram and nortriptyline for the treatment of depression in Parkinson's disease. METHODS This is a multi-centre, double-blind, randomised placebo-controlled trial in 408 people with Parkinson's disease with subsyndromal depression, major depressive disorder or persistent depressive disorder and a Beck Depression Inventory-II (BDI-II) score of 14 or above. Participants will be randomised into one of three groups, receiving either escitalopram, nortriptyline or placebo for 12 months. Trial participation is face-to-face, hybrid or remote. The primary outcome measure is the BDI-II score following 8 weeks of treatment. Secondary outcomes will be collected at baseline, 8, 26 and 52 weeks and following withdrawal, including severity of anxiety and depression scores as well as Parkinson's disease motor severity, and ratings of non-motor symptoms, cognitive function, health-related quality of life, levodopa-equivalence dose, changes in medication, overall clinical effectiveness, capability, health and social care resource use, carer health-related quality of life, adverse effects and number of dropouts. DISCUSSION This trial aims to determine the effectiveness of escitalopram and nortriptyline for reducing depressive symptoms in Parkinson's disease over 8 weeks, to provide information on the effect of these medications on anxiety and other non-motor symptoms in PD and on impact on patients and caregivers, and to examine their effect on change in motor severity. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03652870 Date of registration - 29th August 2018.
Collapse
Affiliation(s)
- A Schrag
- grid.83440.3b0000000121901201Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, University College London, London, UK ,grid.437485.90000 0001 0439 3380Department of Neurology, Royal Free London NHS Foundation Trust, London, UK
| | - C Carroll
- grid.11201.330000 0001 2219 0747Faculty of Medicine and Dentistry, University of Plymouth, Plymouth, UK
| | - G Duncan
- grid.39489.3f0000 0001 0388 0742NHS Lothian, Edinburgh, UK
| | - S Molloy
- grid.417895.60000 0001 0693 2181Department of Neurosciences, Imperial College Healthcare NHS Trust, London, UK
| | - L Grover
- grid.83440.3b0000000121901201Department of Clinical and Movement Neurosciences, UCL Queen Square Institute of Neurology, University College London, London, UK
| | - R Hunter
- grid.83440.3b0000000121901201Research Department of Primary Care and Population Health, University College London, London, UK
| | - R Brown
- grid.13097.3c0000 0001 2322 6764Department of Psychology, Institute of Psychiatry, King’s College London, London, UK
| | - N Freemantle
- grid.83440.3b0000000121901201Comprehensive Clinical Trials Unit, University College London, London, UK
| | - J Whipps
- PPI Representative, Plymouth, UK
| | - M. A Serfaty
- grid.83440.3b0000000121901201Division of Psychiatry, UCL, London, UK ,Priory Hospital North London, London, UK
| | - G Lewis
- grid.83440.3b0000000121901201Division of Psychiatry, UCL, London, UK
| |
Collapse
|
4
|
Daramola AK, Akinrinmade OA, Fajemisin EA, Naran K, Mthembu N, Hadebe S, Brombacher F, Huysamen AM, Fadeyi OE, Hunter R, Barth S. A recombinant Der p 1-specific allergen-toxin demonstrates superior killing of allergen-reactive IgG + hybridomas in comparison to its recombinant allergen-drug conjugate. Immunother Adv 2022; 3:ltac023. [PMID: 36789295 PMCID: PMC9912260 DOI: 10.1093/immadv/ltac023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022] Open
Abstract
Introduction Current treatments for asthma help to alleviate clinical symptoms but do not cure the disease. In this study, we explored a novel therapeutic approach for the treatment of house dust mite allergen Der p 1induced asthma by aiming to eliminate specific population of B-cells involved in memory IgE response to Der p 1. Materials and Methods To achieve this aim, we developed and evaluated two different proDer p 1-based fusion proteins; an allergen-toxin (proDer p 1-ETA) and an allergen-drug conjugate (ADC) (proDer p 1-SNAP-AURIF) against Der p 1 reactive hybridomas as an in vitro model for Der p 1 reactive human B-cells. The strategy involved the use of proDer p 1 allergen as a cell-specific ligand to selectively deliver the bacterial protein toxin Pseudomonas exotoxin A (ETA) or the synthetic small molecule toxin Auristatin F (AURIF) into the cytosol of Der p 1 reactive cells for highly efficient cell killing. Results As such, we demonstrated recombinant proDer p 1 fusion proteins were selectively bound by Der p 1 reactive hybridomas as well as primary IgG1+ B-cells from HDM-sensitized mice. The therapeutic potential of proDer p 1-ETA' and proDer p 1-SNAP-AURIF was confirmed by their selective cytotoxic activities on Der p 1 reactive hybridoma cells. The allergen-toxin demonstrated superior cytotoxic activity, with IC50 values in the single digit nanomolar value, compared to the ADC. Discussions Altogether, the proof-of-concept experiments in this study provide a promising approach for the treatment of patients with house dust mite-driven allergic asthma.
Collapse
Affiliation(s)
- A K Daramola
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - O A Akinrinmade
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Department of Molecular Pharmacology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - E A Fajemisin
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - K Naran
- South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,Medical Biotechnology & Immunotherapy Research Unit, Institute of Infectious Disease and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - N Mthembu
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - S Hadebe
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - F Brombacher
- Division of Immunology, Department of Pathology, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa,International Centre for Genetic Engineering and Biotechnology (ICGEB) and Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology, Faculty of Health Sciences, University of Cape Town, South Africa,Wellcome Centre for Infectious Diseases Research in Africa (CIDRI-Africa), Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, South Africa
| | - A M Huysamen
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - O E Fadeyi
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - R Hunter
- Department of Chemistry, Faculty of Sciences, University of Cape Town, Cape Town, South Africa
| | - S Barth
- Correspondence: Stefan Barth, South African Research Chair in Cancer Biotechnology, Department of Integrative Biomedical Sciences, Faculty of Health Sciences, University of Cape Town, Barnard Fuller Building, Anzio Rd, Observatory, Cape Town, 7935 South Africa.
| |
Collapse
|
5
|
Cho D, Skinner D, Lim D, Zhang S, Grayson J, Swords W, Rocha E, Woodworth B, Kiedrowski M, Hunter R. 473 Acetate and propionate metabolism by Pseudomonas aeruginosa contributes to significant sinus inflammation in a rabbit model of sinusitis. J Cyst Fibros 2022. [DOI: 10.1016/s1569-1993(22)01163-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
6
|
Poppe M, Duffy L, Marchant NL, Barber JA, Hunter R, Bass N, Minihane AM, Walters K, Higgs P, Rapaport P, Lang IA, Morgan-Trimmer S, Huntley J, Walker Z, Brodaty H, Kales HC, Ritchie K, Burton A, Wenborn J, Betz A, Cooper C. The APPLE Tree programme: Active Prevention in People at risk of dementia through Lifestyle, bEhaviour change and Technology to build REsiliEnce-randomised controlled trial. Trials 2022; 23:596. [PMID: 35883143 PMCID: PMC9315085 DOI: 10.1186/s13063-022-06557-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Accepted: 07/16/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Large-scale trials of multidomain interventions show that modifying lifestyle and psychological risk factors can slow cognitive decline. We aim to determine if a lower intensity, personally tailored secondary dementia prevention programme for older people with subjective or mild objective memory decline, informed by behaviour change theory, reduces cognitive decline over 2 years. METHODS A multi-site, single-blind randomised controlled trial recruiting 704 older adults at high dementia risk due to mild cognitive impairment (MCI) or subjective cognitive decline (SCD). Participants are randomised using 1:1 allocation ratio to the APPLE Tree intervention versus control arm (dementia prevention information), stratified by site. The intervention explores and implements strategies to promote healthy lifestyle, increase pleasurable activities and social connections and improve long-term condition self-management. Two facilitators trained and supervised by a clinical psychologist deliver ten, 1-h group video call sessions over 6 months (approximately every fortnight), video-call 'tea breaks' (less structured, facilitated social sessions) in intervening weeks and individual goal-setting phone calls every 2 weeks. From 6 to 12 months, participants meet monthly for 'tea breaks', with those not attending receiving monthly goal-setting phone calls. Participants receive a food delivery, pedometer and website access to cognitive training and information about lifestyle modification. Follow-ups for all outcome measures are at 12 and 24 months. The primary outcome is cognition (Neuropsychological Test Battery (NTB) score) at 24 months. Secondary outcomes are quality of life, cost per quality-adjusted life year (QALY) and wellbeing and lifestyle factors the intervention targets (diet, vascular risk, body weight, activity, sleep, anxiety, depression, social networks and loneliness, alcohol intake and smoking). Participants from purposively selected sites participate in qualitative process evaluation interviews, which will be analysed using thematic analytic methods. DISCUSSION If effective, the intervention design, involving remote delivery and non-clinical facilitators, would facilitate intervention roll-out to older people with memory concerns. TRIAL REGISTRATION ISRCTN17325135 . Registration date 27 November 2019.
Collapse
Affiliation(s)
- M Poppe
- UCL Division of Psychiatry, University College London, London, UK
| | - L Duffy
- UCL Division of Psychiatry, University College London, London, UK
| | - N L Marchant
- UCL Division of Psychiatry, University College London, London, UK
| | - J A Barber
- Department of Statistical Science, University College London, London, UK
| | - R Hunter
- Research Department of Primary Care and Population Health, University College London, London, UK
| | - N Bass
- UCL Division of Psychiatry, University College London, London, UK
| | - A M Minihane
- Norwich Medical School, University of East Anglia, Norwich, UK
| | - K Walters
- Research Department of Primary Care and Population Health, University College London, London, UK
| | - P Higgs
- UCL Division of Psychiatry, University College London, London, UK
| | - P Rapaport
- UCL Division of Psychiatry, University College London, London, UK
| | - I A Lang
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - S Morgan-Trimmer
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - J Huntley
- UCL Division of Psychiatry, University College London, London, UK
| | - Z Walker
- UCL Division of Psychiatry, University College London, London, UK
| | - H Brodaty
- Centre for Healthy Brain Ageing, University of New South Wales, Sydney, Australia
| | - H C Kales
- Department of Psychiatry and Behavioral Sciences, University of California, Davis, Sacramento, USA
| | - K Ritchie
- Institut de Neurosciences de Montpellier (INM), Montpellier, France
| | - A Burton
- Department of Behavioural Science and Health, University College London, London, UK
| | - J Wenborn
- UCL Division of Psychiatry, University College London, London, UK
| | - A Betz
- Queen Mary University London, Centre for Psychiatry and Mental Health, Wolfson Institute for Population Health, London, UK
| | - C Cooper
- Queen Mary University London, Centre for Psychiatry and Mental Health, Wolfson Institute for Population Health, London, UK.
| |
Collapse
|
7
|
Johnsson H, Hunter R, Boyle S. POS1468 PROGRESSIVE MULTIFOCAL LEUKOENCEPHALOPATHY IN A PATIENT WITH A BACKGROUND OF LUPUS NEPHRITIS AND CEREBRAL LUPUS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.1728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundProgressive multifocal leukocencephalopathy (PML) is a potentially fatal degenerative condition caused by reactivation of the human polyomavirus 2 (JC virus) in immunodeficient individuals. It is well recognised in individuals who have received Rituximab, but patients treated with other immunosuppressants are at risk also (1). Moreover, patients with SLE may be at increased risk, even when they are not taking immunosuppressants (1, 2).ObjectivesDescribe the case of a patient with a history of lupus nephritis and cerebral lupus, on long-term Mycophenolate mofetil (MMF) and Prednisolone, diagnosed with PML complicated by immune reconstitution inflammatory syndrome (IRIS).MethodsCase report.ResultsThis patient first presented in 2010 at the age of 18 with ankle swelling and proteinuria. She had high ANA and anti-dsDNA titres, and renal biopsy showed class IV lupus nephritis. She went into remission on high dose Prednisolone and MMF and elected to stop her MMF. Four months later, she developed behaviour changes and worsening proteinuria. MRI showed a mild high signal lesion in the right cerebral hemisphere, and she was diagnosed with cerebral lupus. She recovered after treatment with IV methylprednisolone and MMF. Over the subsequent eight years, she had three flares of her lupus nephritis, with repeat biopsies in 2013 and 2018 showing active proliferative (class IVA) glomerulonephritis. Consequently she was treated with varying doses of oral Prednisolone and MMF for most of this period. She never received any B-cell depleting therapies.In October 2020, she presented to A&E with numbness in her left face and down her left arm and leg. MRI demonstrated signal abnormalities in her right hemisphere, involving the cortex, white matter and leptomeninges. She was lymphopenic (0.58x10^9/L) with a low CD4 count of 136 cells/uL (normal range 620-1990 cells/uL). A recent dsDNA had risen to 70 IU/ml. Her cerebrospinal fluid revealed mildly raised white cells and a weakly positive JC virus PCR. The differential diagnoses included cerebral lupus, opportunistic infection and malignancy. During this period of diagnostic uncertainty, she was treated with an increased dose of oral Prednisolone and plasma exchange. She went on to have a brain biopsy that showed peri-vascular lymphocytic infiltration and JC virus was present in high copy numbers in the brain tissue (49221.8 IU/mL), confirming a diagnosis of PML. Her MMF was stopped but she continued a low dose Prednisolone with the addition of Hydroxychloroquine.She was re-admitted two weeks after discharge in December 2020 with a right-sided headache, left facial weakness and loss of dexterity in her left hand. MRI showed evidence of IRIS in the right hemisphere with cerebral oedema causing midline shift. She was treated with IV Dexamethasone then Prednisolone 30 mg daily, with a gradual taper over a year.She has made a good recovery with minimal neurological deficit; she had recurrent seizures which responded well to anticonvulsant therapy. Her SLE has not flared.ConclusionThis describes a case of PML in the context of longstanding lupus nephritis, treated with prednisolone and MMF. Her longstanding lymphopenia with low CD4 counts were attributed to the combined consequences of active lupus and her cumulative immunosuppressive burden. CD4 lymphopenia is associated with PML in the HIV population, and may provide information about which patients on immunosuppressive treatments are at risk of developing PML (3). However, not enough is known to routinely screen patients and the counts of other lymphocyte subsets are likely to be important too.The case highlights that PML can be associated with different immunosuppressants, other than B-cell depletion. The prompt diagnosis, facilitated by brain biopsy, and appropriate management led to a good medium-term outcome for this patient, showing that PML is eminently survivable.References[1]Calabrese LH, Molloy ES. ARD 2008;67:iii64-iii65[2]Henegar CE et al. Lupus 2016;25(6):617-26[3]Mills EA, Mao-Draayer Y. Front Immunol 2018;9:138Disclosure of InterestsNone declared
Collapse
|
8
|
Bangash F, Collinson J, Dungu J, Gedela S, Westwood M, Manisty C, Farwell D, Tan S, Savage H, Vlachos K, Silberbauer J, Calvo J, Hunter R, Schilling R, Srinivasan N. Assessment of optimal thresholds for ventricular scar substrate characterization using the high density grid multipolar mapping catheter. Europace 2022. [DOI: 10.1093/europace/euac053.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Voltage thresholds for ventricular scar definition are based on historic data collected using catheters with widely spaced bipoles in the absence of contact force. Modern multipolar mapping catheters employ smaller electrodes and interelectrode spacing that theoretically allows for mapping with increased resolution and reduced far-field electrogram (EGM) component. Despite the advancement in technology, historic cut-offs of <0.5mV for dense scar and 0.5-1.5mV for scar borderzone continue to be used in contemporary electrophysiology.
Purpose
We aimed to assess the optimal voltage cut-offs for ventricular scar substrate characterization using the HD Grid multipolar mapping catheter. Voltage cut-offs were assessed against cardiac MRI derived scar. We compared optimal voltage cut-offs using conventional bipolar sampling, the Best Duplicate Algorithm and with the HD wave solution plus best duplicate algorithm on.
Methods
A multicentre study of twenty patients undergoing VT ablation was conducted. Substrate mapping was performed using the high-density HD-grid multipolar mapping catheter. Bipolar voltage maps were co-registered with cardiac MRI obtained prior to the procedure to assess the voltage characteristics of scar defined by cardiac MRI (CMR) (Figure 1). Pre-procedure contrast enhanced CMR data were analysed using ADAS software (Galgo medical). Data points were collected in regions of scar during (1) HD wave mapping with best duplicate algorithm on(Waveon), (2) Mapping with HD wave off and best duplicate on (Waveoff) and (3) with conventional bipolar mapping (Alloff).
Results
The median bipolar voltage for regions of dense CMR scar using (Waveon) HD wave solution and best duplicate algorithm was 0.27mV (IQR 0.14 – 0.46). The median voltage with (Waveoff) HD wave off was 0.29mV (0.15 – 0.45). The median voltage with (Alloff) HD wave off and best duplicate off was 0.32mV (0.19 – 0.5). ROC analysis using AUC suggested the optimal cut-off for endocardial dense scar using (Waveon) HD wave mapping and best duplicate algorithm was 0.30mV (sensitivity: 69.6%, specificity: 60.74%), (Waveoff) cut-off with the best duplicate and without the HD wave mapping was 0.34mV (sensitivity: 69.78%, specificity: 64.46%) and (Alloff) without wave mapping or best duplication was 0.36mV (sensitivity: 84%, specificity: 52%) Figure 2.
Conclusion
Ventricular substrate characterization with newer mapping technology using narrow electrode spacing and smaller electrode size suggests that traditional voltage cut-offs may need revision for delineation of scar characteristics. Additionally, the ability to repeat sample in a region to obtain the best signal (Best Duplicate), and the ability to obviate the effect of wavefront direction using the HD wave solution omnipolar technology, may further increase the fidelity of scar characterization. This has important implications for mapping VT and characterizing channels in order to identify VT circuits.
Collapse
Affiliation(s)
- F Bangash
- Royal Free London NHS Foundation Trust, Cardiology, London, United Kingdom of Great Britain & Northern Ireland
| | - J Collinson
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - J Dungu
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - S Gedela
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - M Westwood
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - C Manisty
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - D Farwell
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - S Tan
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - H Savage
- Basildon and Thurrock University Hospitals NHS Foundation Trust, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - K Vlachos
- Onassis Cardiac Surgery Center, Athens, Greece
| | - J Silberbauer
- Sussex Cardiac Centre, Brighton, United Kingdom of Great Britain & Northern Ireland
| | - J Calvo
- Brighton & Sussex University Hospitals N H S Trust, Brighton, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - R Schilling
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - N Srinivasan
- Anglia Ruskin University, Chelmsford, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
9
|
Briosa E Gala A, Pope MTP, Leo M, Ormerod J, Field D, Balasubramaniam R, Thomas H, Gardner RS, Hunter R, Gallagher MM, Wilson D, Paisey JR, Curzen NP, Betts TR. Accuracy of AF burden detection with the new Confirm Rx with Sharp-sense technology. Europace 2022. [DOI: 10.1093/europace/euac053.173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Implantable cardiac monitors (ICMs) are increasingly used to monitor atrial fibrillation (AF) burden following catheter ablation. AF burden recorded by the Confirm Rx™ ICM cannot be modified even after adjudication of false-positive (FP) episodes. We sought to investigate accuracy of the AF burden detection in a UK cohort.
Methods
This multicentre retrospective study included patients with Confirm Rx™ and at least one episode >6 minutes across 9 UK hospitals. Each episode had a corresponding 120-second EGM (electrogram) and heart rate scatterplot which was considered representative of the whole episode. One cardiologist adjudicated all EGMs as ‘True AF’ or ‘False positive’ and a random sample of 10% was reviewed to account for intra and interobserver variability. AF burden was computed as the duration of all episodes classified as AF by the Confirm-Rx divided by the total duration of follow-up. ‘True-AF’ burden was calculated by dividing the duration of episodes adjudicated as ‘True-AF’ by the total duration of follow-up. We also investigated the accuracy of AF burden according to implantation indication and episode duration.
Results
A total of 16,230 individual AF episodes were included from 232 consecutive patients. Overall, 26,137 hours of AF were recorded and a total follow-up 315 patient-years which equates to an AF burden of 0.95%. However, only 24,404.7 (93.3%) hours represented time in ‘True-AF’ and a ‘True-AF’ burden for the whole cohort of 0.89% (Table 1). Patients with a Confirm-Rx™ for palpitations and suspected AF had the lowest proportion of ‘True-AF’ burden and had a modest contribution to the overall AF burden (Figure 1). Conversely, patients with known AF had the highest proportion of ‘True-AF’ burden recorded. Most AF (84.5%) episodes lasted less than 1 hour with approximately a quarter adjudicated as false-positive detections, but their contribution towards overall AF burden was very small (Figure 2A-2B). In contrast, AF >3 hours accounted for 76.4% of time in AF and the proportion of ‘True-AF’ burden was 98.5%.
Conclusion
The accuracy of the estimated AF burden for the whole cohort was excellent (93.3%), driven by the high proportion of ‘True-AF’ burden in AF>3 hours.
Collapse
Affiliation(s)
- A Briosa E Gala
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - MTP Pope
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - M Leo
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - J Ormerod
- Milton Keynes University Hospital NHS Trust, Milton Keynes, United Kingdom of Great Britain & Northern Ireland
| | - D Field
- Essex Cardiothoracic Centre, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - R Balasubramaniam
- University Dorset Hospital, Bournemouth, United Kingdom of Great Britain & Northern Ireland
| | - H Thomas
- Wansbeck General Hospital, Ashington, United Kingdom of Great Britain & Northern Ireland
| | - RS Gardner
- Golden Jubilee National Hospital, Glasgow, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - MM Gallagher
- St George’s University Hospital NHS Foundation Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - D Wilson
- Worcestershire Royal Hospital, Worcester, United Kingdom of Great Britain & Northern Ireland
| | - JR Paisey
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - NP Curzen
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - TR Betts
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
10
|
Breitenstein A, Kanthasamy V, Hofer D, Hunter R, Butcher CH, Ahluwalia N, Schilling RJ, Finlay M. Early results of the novel radiofrequency balloon ablation catheter for pulmonary vein isolation. Europace 2022. [DOI: 10.1093/europace/euac053.263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
Pulmonary vein isolation (PVI) remains the cornerstone for treating of symptomatic atrial fibrillation (AF). Single-shot PVI technologies have evolved as a standard for first-time PVI. A novel radiofrequency balloon ablation catheter is now available to offer single-shot RF pulmonary vein isolation.
Purpose
To summarize the early experience using the novel RF balloon ablation catheter for patients undergoing PVI in two tertiary centres in Europe.
Methods
We prospectively assessed the first 38 consecutive patients undergoing PVI using RF balloon ablation catheter for paroxysmal or persistent AF in two high volume centres. Both centres used a standardised approach including ultrasound-guided vascular access, uninterrupted anticoagulation, transeptal puncture via the RF balloon sheath and a limited 3D mapping software-guided LA geometry created with a circular mapping catheter. Radiofrequency application for 60s to the anterior segments and 20s posteriorly was performed in all cases, phrenic pacing was employed for ablation of right PVs. BHS performed all procedures (except 2 cases due to high BMI and severe sleep apnea) under sedation, while all patients from UHZ underwent PVI procedures with general anaesthesia as per institutional protocol. All patients had an oesophageal temperature probe to assess oesophageal temperature during ablation (passed orally under sedation) and had uninterrupted oral anticoagulation throughout the periprocedural period.
Results
Overall, mean age was 64±8 years, 23 (61%) were male, 24 (63%) of patients had paroxysmal AF. The majority were de novo interventions (92%). There was no significant difference between the patients demographics in the two hospitals. All veins were isolated in both groups with a total of 144 applications (n = 73 in the sedation group, n = 71 in the GA population). Median fluoroscopy time was comparable (sedation group 1.1 minutes vs GA group 1.2 minutes; P = 0.58), but median procedure time was shorter in the sedation group (65 minute vs 106 minutes; P < 0.001). The median number of RF ablation per patient (sedation group 7 vs GA group 9; P = 0.32) and time to isolation of each vein (sedation group 11 seconds vs GA group 10 seconds; P = 0.9) were similar. Number of acute reconnections requiring further ablations were not significantly different between groups (sedation group 11 [15%] vs GA group 14 [20%]; P = 0.96). One patient sustained transient phrenic nerve injury in the sedation group.
Conclusion
Our early experience shows the novel HS balloon ablation can be performed effectively, efficiently and safely under either GA or conscious sedition. The RF balloon ablation catheter paradigm lends itself to refined workflows, with low fluoroscopy requirements and a short learning curve even in initial cohorts.
Collapse
Affiliation(s)
| | - V Kanthasamy
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - D Hofer
- University Heart Center, Zurich, Switzerland
| | - R Hunter
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - CH Butcher
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - N Ahluwalia
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - RJ Schilling
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - M Finlay
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
11
|
Collinson J, Bangash F, Dungu J, Gedela S, Westwood M, Manisty C, Farwell D, Tan S, Savage H, Vlachos K, Schilling R, Hunter R, Srinivasan N. Integration of structural and functional data in VT ablation -- SENSE2 protocol mapping. Europace 2022. [DOI: 10.1093/europace/euac053.360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Background
We have previously developed the sense protocol functional substrate mapping technique for VT ablation(1). However, functional substrate characterizaiton can involve protracted mapping time.
Purpose
We incorporated the integration of MRI data using ADAS-3D software into the mapping workflow, to integrate structural mapping information into the functional mapping substrate characterization, in order to improve procedural efficiency.
Methods
CMRs were performed in 20 patients with ischemic related VT and VT therapy in the previous 6 months. These were processed with the ADAS-3D software to characterize the extent of ventricular scars and also ADAS corridors which may correlate with VT channels. Focused substrate maps were then performed in patients, guided by the extent of ADAS scar and corridors, looking at the scar substrate in intrinsic rhythm and then functional channels using single extra pacing from the RV at 20ms above ERP (SENSE2 Protocol). Specifically healthy areas 2cm beyond the scar borderzone based on ADAS were not mapped, in order to reduce substrate mapping time and complete geometries were not created. Following delineation of functional channels pacemapping and entrainment mapping were used to confirm targets for ablation.
The ADAS 3D MRI was integrated into the into the VT substrate map on Ensite-Precision with alignment to the aorta, RV and PA (Figure 1). We compared our data with previous functional mapping data without the integration of MRI.
Results
20 patients (age 70 years; 19 male subjects) underwent ablation. Mean EF 28%. Median procedure time was 161 minutes compared with 246 minutes (in our previous study)(p=<0.001) Mean substrate mapping time was 32 mins vs 63 mins (p=<0.001). Mean ablation time was 22 mins vs 32 mins (p=0.11). 85% (17 of 20) patients were free from symptomatic VT/ anti-tachycardia pacing or implantable cardioverter defibrillator shocks at a median follow-up of 171 days. The mean VT burden was reduced from 22 events per patient in the 6 months’ pre-ablation to 1 event per patient in the median follow up period of 171 days post ablation (p=0.02). Mean shocks per-patient burden decreased from 3.5 to 0.08 in the same time period(p=0.03).
Conclusion
The SENSE2 protocol involves the integration of structural and functional data into the VT workflow for substrate characterization. It enables focused substrate maps to be performed without the need for complete geometry to be created in large ventricles. Outcomes compare favourably with our previous data but with significantly shorter procedure times. This streamlined workflow has the potential to improve care in VT ablation by shortening procedure times with similar outcomes which may reduce risks for the patient.
Figure 1: Comparison of Voltage Map with MRI scar & corridors using ADAS
Collapse
Affiliation(s)
- J Collinson
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - F Bangash
- Royal Free Hospital, London, United Kingdom of Great Britain & Northern Ireland
| | - J Dungu
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - S Gedela
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - M Westwood
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - C Manisty
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - D Farwell
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - S Tan
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - H Savage
- Basildon and Thurrock University Hospital, Essex, United Kingdom of Great Britain & Northern Ireland
| | - K Vlachos
- Onassis Cardiac Surgery Center, Athens, Greece
| | - R Schilling
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Heart Centre, London, United Kingdom of Great Britain & Northern Ireland
| | - N Srinivasan
- Anglia Ruskin University, Chelmsford, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
12
|
Briosa E Gala A, Pope MTB, Leo M, Ormerod J, Field D, Balasubramaniam R, Hunter R, Thomas H, Gardner RS, Gallagher MM, Wilson D, Paisey JR, Curzen NP, Betts TR. Diagnostic accuracy of the Confirm-Rx atrial fibrillation detection algorithm in real-world patients. Europace 2022. [DOI: 10.1093/europace/euac053.174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Continuous rhythm monitoring with implantable cardiac monitors (ICMs) is commonly used to detect and characterise atrial fibrillation (AF) episodes. The Confirm Rx™ with SharpSense™ technology offers four new discriminators and second pass analysis aimed at enhancing detection and improving accuracy for cardiac arrhythmias. This study sought to investigate the diagnostic accuracy of the Confirm Rx™ AF detection algorithm in a UK cohort of ‘real-world’ patients.
Methods
This multicentre retrospective study included patients with Confirm Rx™ and at least one episode of AF>6 minutes from August 2018 to August 2021 across 9 UK hospitals. Each episode had a corresponding 120-second electrogram (EGM) and heart rate scatterplot. One cardiologist manually adjudicated all EGMs as ‘True-AF’ or ‘False-positive. To assess for intra and inter-observer variability, 10% of the EGMs were reviewed. Diagnostic accuracy was determined by calculating the raw and patient-averaged positive predictive value (PPV) for AF episode of different durations and implant indications.
Results
During the study 232 patients met inclusion criteria with a total of 315 patient-years of follow-up. 16,320 individual AF episodes were adjudicated; intra- and interobserver variability was excellent (Cohen’s kappa 0.85 and 0.86, respectively). The rate of ‘True-AF’ detection was 3.19 episodes per month corresponding to a raw PPV of 74.5% for the whole cohort. The highest number of episodes per months was observed in patients with a Confirm-Rx for palpitations (5.1) and suspected AF (5.8) but only approximately half of these represented ‘True-AF’ episodes (Figure 1). Patients with known AF had the lowest rate of AF episodes (1.6 episodes per month) but the highest proportion of ‘True-AF’ episodes (PPV of 95.5%). A clear trend of improving diagnostic accuracy was seen with longer AF episodes (Table1). AF>3 hours had a PPV above 94% and all episodes lasting longer than 24 hours were ‘True-AF’. For AF episode of short duration, the PPV varied with the population being monitored; however, for longer AF episodes the PPV increased significantly and irrespective of implant indication (Figure 2).
Conclusion
Overall, the Confirm Rx™ ICM diagnostic accuracy was modest for all AF episodes lasting longer than 6 minutes (74.5%) but improved considerably for longer AF episodes irrespective of implant indication.
Collapse
Affiliation(s)
- A Briosa E Gala
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - MTB Pope
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - M Leo
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | - J Ormerod
- Milton Keynes University Hospital NHS Trust, Milton Keynes, United Kingdom of Great Britain & Northern Ireland
| | - D Field
- Essex Cardiothoracic Centre, Basildon, United Kingdom of Great Britain & Northern Ireland
| | - R Balasubramaniam
- University Dorset Hospital, Bournemouth, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- Barts Health NHS Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - H Thomas
- Wansbeck General Hospital, Ashington, United Kingdom of Great Britain & Northern Ireland
| | - RS Gardner
- Golden Jubilee National Hospital, Glasgow, United Kingdom of Great Britain & Northern Ireland
| | - MM Gallagher
- St George’s University Hospital NHS Foundation Trust, London, United Kingdom of Great Britain & Northern Ireland
| | - D Wilson
- Worcestershire Royal Hospital, Worcester, United Kingdom of Great Britain & Northern Ireland
| | - JR Paisey
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - NP Curzen
- University Hospital Southampton NHS Foundation Trust, Southampton, United Kingdom of Great Britain & Northern Ireland
| | - TR Betts
- Oxford University Hospitals NHS Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
13
|
Hunter R, Wilkinson E, Snaith B. A single-centre experience of implementing a rapid CXR reporting and CT access pathway for suspected lung cancer: Initial outcomes. Radiography (Lond) 2022; 28:304-311. [DOI: 10.1016/j.radi.2021.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 11/29/2022]
|
14
|
Moore P, Wiggen T, Kent L, Arif S, Lucas S, O’Grady S, Hunter R. 414: Anaerobic microbiota facilitate Pseudomonas aeruginosa access to the airway epithelium in a novel co-culture model of colonization. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01838-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
15
|
Kent L, Arif S, Cleaver A, O’Connor J, Wagner B, Harris J, Laguna T, Hunter R. 518: Relationships between mucin integrity and microbiota in the pediatric CF airway. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01942-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
16
|
Cho D, Skinner D, Zhang S, Lim D, Swords W, Hunter R, Rowe S, Woodworth B. 445: Adaptation of Pseudomonas aeruginosa isolates from cystic fibrosis patients to the anaerobic environment. J Cyst Fibros 2021. [DOI: 10.1016/s1569-1993(21)01869-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
17
|
Stellenboom N, Hunter R, Caira M, Oztekin A, Zilbeyaz K. Unsymmetrical Cysteine Disulfides as Carbonic Anhydrase Inhibitors. Russ J Bioorg Chem 2021. [DOI: 10.1134/s1068162021050344] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
18
|
Mark N, Papageorgiou N, Ramplin J, Monkhouse C, Moore P, Chow A, Hunter R, Sporton S, Providencia R, Earley M, Elliott J, Muthumala A. Feasibility of using his bundle pacing with boston scientific generators. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.0676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Introduction
His bundle pacing (HBP) aims to deliver physiological activation of the ventricles via the native His-Purkinje conduction system. A challenge of HBP is the limited market of implantation tools, pacing leads and specifically designed pacing algorithms.
Purpose
Over the last three years both Medtronic (MDT) and Boston Scientific (BSC) generators have been used for HBP in a large tertiary centre. We examined whether there was any difference between lead parameters and battery longevity depending on the type of manufacturer used.
Methods
Patients implanted with a MDT Select Secure model 3830 lead were included in this retrospective study. Data collected included HBP thresholds (analysed at 1ms pulse width) at implant and at the most recent device check, HBP percentages and battery longevity (months). Battery longevity were calculated by adding duration of follow up and estimated battery life at last follow up.
Results
A total of 31 patients were included for data analysis (58% male and mean age 72 years). 18 patients had MDT generators of which 3 were PPMs, 5 were CRT-Ps and 10 were CRT-Ds. 13 patients had BSC generators of which 5 were PPMs, 5 were CRT-Ps and 3 were CRT-Ds. Mean follow up of the cohort was 12.7±9.02 months.
Mean HBP percentages were 77±37% and 72.2±42.1% for MDT and BSC, respectively (p=0.430). Mean HBP threshold (Volts) at implant was significantly lower with BSC vs MDT (0.85±0.58 vs 1.84±1.06, p=0.01), and similar after follow up (1.01±0.91 vs 1.32±0.73, p=NS). There were no statistically significant differences between mean HBP threshold at implant compared to follow up for both manufacturers.
Interestingly, mean battery longevity for BSC vs MDT generators was significantly higher (136±29.3 vs 90.5±29.1, p<0.001). Longevity was also compared for PPM/CRT-P and CRT-D separately. For PPM/CRT-P, BSC generators had significantly higher longevity as compared to MDT (141.6±33.1 vs 91.6±34.5, p=0.009). This difference was not observed for CRT-Ds between the 2 manufacturers (p=0.068).
Conclusion
Our results suggest HBP with MDT Select Secure 3830 lead is feasible with BSC generators. There is potentially greater battery longevity with BSC compared to MDT generators. Further studies are needed with greater numbers and longer follow up to confirm this finding.
Funding Acknowledgement
Type of funding sources: None.
Collapse
Affiliation(s)
- N Mark
- Barts Health NHS Trust, London, United Kingdom
| | | | - J Ramplin
- Barts Health NHS Trust, London, United Kingdom
| | - C Monkhouse
- Barts Health NHS Trust, London, United Kingdom
| | - P Moore
- Barts Health NHS Trust, London, United Kingdom
| | - A Chow
- Barts Health NHS Trust, London, United Kingdom
| | - R Hunter
- Barts Health NHS Trust, London, United Kingdom
| | - S Sporton
- Barts Health NHS Trust, London, United Kingdom
| | | | - M Earley
- Barts Health NHS Trust, London, United Kingdom
| | - J Elliott
- Barts Health NHS Trust, London, United Kingdom
| | - A Muthumala
- Barts Health NHS Trust, London, United Kingdom
| |
Collapse
|
19
|
Middleton RM, Craig EM, Rodgers WJ, Tuite-Dalton K, Garjani A, Evangelou N, das Nair R, Hunter R, Tallantyre EC, Cauchi M, Cairn C, Paling D, Fuller S, McDonnell G, Petheram K, Liu B, Nock U, Ingram G, Brownlee W, Taylor J, Nicholas R. COVID-19 in Multiple Sclerosis: Clinically reported outcomes from the UK Multiple Sclerosis Register. Mult Scler Relat Disord 2021; 56:103317. [PMID: 34653949 DOI: 10.1016/j.msard.2021.103317] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 02/07/2023]
Abstract
BACKGROUND In March 2020, the United Kingdom Multiple Sclerosis Register (UKMSR) established an electronic case return form, designed collaboratively by MS neurologists, to record data about COVID-19 infections in people with MS (pwMS). OBJECTIVES Examine how hospital admission and mortality are affected by disability, age and disease modifying treatments (DMTs) in people with Multiple Sclerosis with COVID-19. METHODS Anonymised data were submitted by clinical teams. Regression models were tested for predictors of hospitalisation and mortality outcomes. Separate analyzes compared the first and second 'waves' of the pandemic. RESULTS Univariable analysis found hospitalisation and mortality were associated with increasing age, male gender, comorbidities, severe disability, and progressive MS; severe disability showed the highest magnitude of association. Being on a DMT was associated with a small, lower risk. Multivariable analysis found only age and male gender were significant. Post hoc analysis demonstrated that factors were significant for hospitalisation but not mortality. In the second wave, hospitalisation and mortality were lower. Separate models of the first and second wave using age and gender found they had a more important role in the second wave. CONCLUSIONS Features associated with poor outcome in COVID-19 are similar to other populations and being on a DMT was not found to be associated with adverse outcomes, consistent with smaller studies. Once in hospital, no factors were predictive of mortality. Reassuringly, mortality appears lower in the second wave.
Collapse
Affiliation(s)
- R M Middleton
- Population Data Science, School of Medicine, Singleton Park, Swansea University, SA2 8PP, United Kingdom.
| | - E M Craig
- Population Data Science, School of Medicine, Singleton Park, Swansea University, SA2 8PP, United Kingdom
| | - W J Rodgers
- Population Data Science, School of Medicine, Singleton Park, Swansea University, SA2 8PP, United Kingdom
| | - K Tuite-Dalton
- Population Data Science, School of Medicine, Singleton Park, Swansea University, SA2 8PP, United Kingdom
| | - A Garjani
- School of Medicine, University of Nottingham, United Kingdom
| | - N Evangelou
- School of Medicine, University of Nottingham, United Kingdom
| | - R das Nair
- School of Medicine, University of Nottingham, United Kingdom
| | - R Hunter
- Psychology Department, Swansea University, United Kingdom
| | - E C Tallantyre
- Department of Psychological Medicine and Clinical Neurosciences, Cardiff University, United Kingdom
| | - M Cauchi
- Department of Psychological Medicine and Clinical Neurosciences, Cardiff University, United Kingdom
| | - C Cairn
- The Walton Centre NHS Foundation Trust, Liverpool, United Kingdom
| | - D Paling
- Royal Hallamshire Hospital, Sheffield, United Kingdom
| | - S Fuller
- Barking Havering and Redbridge Hospitals NHS Trust, Romford, United Kingdom
| | - G McDonnell
- Belfast City Hospital, Belfas, United Kingdom
| | - K Petheram
- South Tyneside and Sunderland NHS Foundation Trust, Tyne and Wear, United Kingdom
| | - B Liu
- School of Medicine, University of Nottingham, United Kingdom
| | - U Nock
- Rotherham Doncaster and South Humber NHS Foundation Trust, Doncaster, United Kingdom
| | - G Ingram
- Swansea Bay University Health Board, Swansea, United Kingdom
| | - W Brownlee
- University College London, Queen Square MS Centre, London, United Kingdom
| | - J Taylor
- York and Scarborough Teaching Hospitals NHS Foundation Trust, York, United Kingdom
| | - R Nicholas
- Imperial College London, London, United Kingdom
| | | |
Collapse
|
20
|
Wong G, Ahmed D, Creta A, Honarbakhsh S, Kanthasamy V, Maclean E, Sawhney V, Earley M, Hunter R, Schilling RJ, Finlay M. ProGlide venous closure device facilitates early ambulation following cryoablation of atrial fibrillation. Europace 2021. [DOI: 10.1093/europace/euab116.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: Foundation. Main funding source(s): Heart Foundation
Background
Same-day discharge following atrial fibrillation (AF) ablation is increasingly common. ProGlide device suture-mediated vascular closure (PD) offers a technique that may expedite mobilisation following large-bore (>12F) venous access. The utility of PD closure following cryoablation of AF has not been reported.
Purpose
We sought to evaluate haemostasis and early ambulation outcomes in patients receiving the ProGlide compared with conventional techniques.
Methods
104 consecutive patients undergoing cryoballoon pulmonary vein isolation (PVI) for paroxysmal or persistent at a single high-volume institution were included. PVI was performed via a standardised approach including sedation, ultrasound-guided vascular access for 14F Cryosheath and second 7F sheath, anticoagulation protocol, transeptal puncture, 28mm cryoballoon and nurse-led same-day discharge protocol. Haemostasis was achieved using the Perclose Proglide device (PD) in the 14F access point ("pre-closure" technique) plus 5 minutes manual pressure at the 7F sheath site. Alternatively, a figure-of-eight/Z-suture (ZS) was employed for closure according to operator preference. Protamine was used for heparin reversal in all patients. Safety outcomes of major bleeding, haematoma and minor bleeding were assessed. Time to ambulation (TTA), time to discharge (TTD), same-day discharge and complications at initial follow-up were measured.
Results
Overall, mean age was 64 ± 11 years, 65 (64%) were male and 52 (50%) of patients had paroxysmal AF, there were no significant differences between group demographics, with 31 patients (30%) in the PD group and 73 (70%) in the ZS group. All patients had uninterrupted oral anticoagulation throughout the periprocedural period. No major femoral bleeding complications requiring intervention occurred in either group. Haematomas occurred in none of the PD group compared with 2 (2.8%) in the ZS group. Incidence of minor bleeding was not significantly different between groups (PD: 3 [9.7%] vs ZS: 2 [2.7%], p = 0.155). Mean TTA was significantly shorter in the PD group (3.3 ± 1.1 vs 4.1 ± 1.7 hrs, p = 0.025). However, there was no significant difference in same-day discharge (PD: 25 [81%] vs ZS: 53 [73%], p = 0.386) and TTD (5.0 ± 3.6 vs 6.1 ± 4.2 hrs, p = 0.275) between groups. 1 patient complained of groin pain which delayed discharge in the ZS group not seen in the PD group. After a mean follow-up of 2.2 ± 1.4 months, there were no differences in major or minor complications.
Conclusion
Use of the Proglide closure device was associated with significant reductions in time to ambulation compared with Z-suture haemostasis following cryoablation of AF, and groin access complications were uncommon across groups. PD closure may contribute to further streamlining patient pathways in day-case AF ablation.
Collapse
Affiliation(s)
- G Wong
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - D Ahmed
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - A Creta
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - S Honarbakhsh
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - V Kanthasamy
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - E Maclean
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - V Sawhney
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - M Earley
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - R Hunter
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - RJ Schilling
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| | - M Finlay
- St Bartholomew"s Hospital, Department of Cardiac Electrophysiology, London, United Kingdom of Great Britain & Northern Ireland
| |
Collapse
|
21
|
Deisenhofer I, Lengauer S, Telishevska M, Richter S, Rajappan K, Kottmaier M, Bertagnolli L, Moreno J, Hunter R, Tao C, Della Bella P. European early experience with a novel 3D mapping system. Europace 2021. [DOI: 10.1093/europace/euab116.071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Funding Acknowledgements
Type of funding sources: None.
Introduction
Catheter navigation and 3-dimensional (3D) cardiac mapping are critical for successful electrophysiological ablation procedures. A novel 3D mapping system received CE Mark in July 2020. The system offers two imaging modalities: magnetic-based (VoXel) and impedance-based (NavX). Real-time display of 3D location and catheter movements is achieved via a magnetic field frame and magnetic sensors with supplemental impedance data when operating in VoXel mode or primarily via an impedance field generated from surface electrodes in NavX mode. To address limitations in data collection commonly experienced during 3D mapping, a new respiratory compensation algorithm, patient movement detection module, and metal compensation algorithm have been developed to enable consistent data collection throughout the full respiratory cycle even in challenging cases and lab environments.
Purpose
To examine the clinical utility and procedural characteristics associated with the use of this novel 3D mapping system among participating centers.
Methods
Procedural data was collected in cases utilizing the newly cleared mapping system during the initial evaluation phase in Europe. Procedural characteristics recorded included indication for mapping and ablation, rhythm mapped, chambers mapped, and procedure time.
Results
Procedural data was collected from over 250 cases across 12 European centers. A total of 12 indications for mapping and ablation were represented including de novo and redo atrial fibrillation (paroxysmal, persistent, long-standing persistent), ventricular tachycardia (ischemic, non-ischemic) or premature ventricular contraction, and supraventricular arrhythmias (typical and atypical atrial flutter, atrioventricular nodal reentrant tachycardia, atrioventricular reentrant tachycardia). Over 70% of the cases were performed in VoXel mode. Impedance mode was mostly used in SVT cases or when the case was intended to be completed with minimal fluoroscopy. The most commonly mapped rhythms were sinus rhythm during voltage mapping and atrial tachycardia. The majority of cases (over 65%) were completed under conscious sedation; general anesthesia was used in 20% of the cases (15% not reported). The respiratory compensation algorithm was utilized in over 90% of the cases. For cases in which pre-procedural computed tomography or magnetic resonance imaging were available, operators indicated that the model shape was accurate when compared to pre-procedural imaging in 96% of the cases performed in VoXel mode.
Conclusions
Initial European experience with this novel 3D mapping system included a wide variety of arrhythmias in the atria and ventricles. This new mapping system offered operators the flexibility to tailor to specific procedure needs with two imaging modalities which were both widely utilized.
Collapse
Affiliation(s)
| | - S Lengauer
- German Heart Centre Munich, Munich, Germany
| | | | - S Richter
- Heart Center - University of Leipzig, Leipzig, Germany
| | - K Rajappan
- Oxford University Hospitals NHS Foundation Trust, Oxford, United Kingdom of Great Britain & Northern Ireland
| | | | - L Bertagnolli
- Heart Center - University of Leipzig, Leipzig, Germany
| | - J Moreno
- Hospital Ramón y Cajal, Madrid, Spain
| | - R Hunter
- St Bartholomew"s Hospital, London, United Kingdom of Great Britain & Northern Ireland
| | - C Tao
- Abbott, Minneapolis, United States of America
| | - P Della Bella
- IRCCS San Raffaele Scientific Institute, Milan, Italy
| |
Collapse
|
22
|
Hunter R, Jawad N, Byass O. NG12 patient questionnaire: a simple intervention identifies patients at risk of lung cancer and improves the diagnostic pathway. Clin Radiol 2020. [DOI: 10.1016/j.crad.2020.11.103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
23
|
Miller Renfrew L, Rafferty D, Lord A, Hunter R, Paul L. Determining validity of the PALite and ODFS PACE activity logger for measuring step count in healthy adults. Gait Posture 2020; 80:315-317. [PMID: 32593100 DOI: 10.1016/j.gaitpost.2020.06.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 06/03/2020] [Accepted: 06/16/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Determining adherence with orthoses is important for clinicians prescribing devices. Measuring orthotic use often relies on patient recall which has poor agreement with objective measures. Measuring step count whilst wearing an orthosis could help objectively quantifying adherence. The Odstock Drop Foot Stimulator (ODFS) Pace, used in foot drop, has an integral activity logger which provides data on step count. The PALite, an accelerometer, measures step count and can be fixed to an ankle foot orthoses (AFO). Both have the potential to provide objective measures of adherence; however, their validity for this purpose has not been determined. RESEARCH QUESTION To determine the validity of the PALite and ODFS Pace activity logger in measuring total step count, by exploring their level of agreement. METHODS A convenience sample of sixteen healthy volunteers, aged 18-65, were recruited from Glasgow Caledonian University (GCU). Participants walked continuously for 5 min on a treadmill at three walking speeds; normal (1.3ms-1), slow (0.4 ms-1) and fast (1.7-2.0 ms-1), wearing both the PALite and ODFS Pace. All walks were video recorded, viewed by 2 raters, and observed step count was determined by a click counter. Step count from both devices was validated against observed step count using video recording. The level of agreement between the three methods was established. RESULTS There was no significant difference between the 3 methods of measuring step count at any walking speed (normal, p = 0.913; slow, p = 0.938; fast, p = 0.566). Good levels of agreement for both devices with observed step count at all 3 walking speeds, with mean percentage differences being between -1.2 and 2.1 % (maximum upper and lower levels of agreement = 19.5 and -18.8 %) was detected. SIGNIFICANCE Clinicians could consider both devices to objectively measure step count with people who are prescribed foot drop orthoses, thus quantifying orthotic use.
Collapse
Affiliation(s)
| | - D Rafferty
- School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, UK
| | - A Lord
- MS Service, NHS Ayrshire and Arran, Scotland, UK
| | - R Hunter
- MS Service, NHS Ayrshire and Arran, Scotland, UK
| | - L Paul
- School of Health and Life Sciences, Glasgow Caledonian University, Glasgow, UK
| |
Collapse
|
24
|
Appleton E, Buell D, Agnew A, Hunter R. Skeletal Health in Collegiate Club Triathlon Athletes. J Acad Nutr Diet 2019. [DOI: 10.1016/j.jand.2019.06.108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
25
|
Hildago-Oporto P, Navia R, Hunter R, Coronado G, Gonzalez ME. Synthesis of carbon nanotubes using biochar as precursor material under microwave irradiation. J Environ Manage 2019; 244:83-91. [PMID: 31108314 DOI: 10.1016/j.jenvman.2019.03.082] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 03/14/2019] [Accepted: 03/16/2019] [Indexed: 06/09/2023]
Abstract
Biochar is a carbon-rich porous material obtained by the thermochemical treatment of biomass. Biochar presents a suitable composition as precursor material for carbon nanotubes (CNTs) growth, and can be used as a sustainable alternative in the valorization of biomass. In this study, the synthesis of CNTs using biochar as biological precursor material is presented. CNTs were synthesized using a mixture of biochar and ferrocene including microwave assisted heating. Biochar samples used in the synthesis of CNTs were obtained from agroindustrial waste such as wheat straw, oat hulls, rapeseed cake and hazelnut hulls pyrolyzed at 400 °C and 600 °C. Synthesized CNTs were examined by dynamic light scattering, UV-VIS spectroscopy, Raman spectroscopy and transmission electron microscopy. The results indicate that the physicochemical properties of CNTs were influenced by pyrolysis temperature of biomass. Biochars obtained at 600 °C produced higher CNTs concentration and smaller hydrodynamic diameter. Moreover, CNTs synthesized from biochar of hazelnut hulls and wheat straw show a higher degree of wall graphitization, suggesting superior CNT quality. The results of this study show the feasible production of CNTs using biochar as precursor material.
Collapse
Affiliation(s)
- Pamela Hildago-Oporto
- Scientific and Technological Bioresources Nucleus, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
| | - R Navia
- Scientific and Technological Bioresources Nucleus, Universidad de La Frontera, Casilla 54-D, Temuco, Chile; Departament of Chemical Engineering, Universidad de La Frontera, Casilla 54-D, Temuco, Chile; Centre for Biotechnology & Bioengineering (CeBiB), University of La Frontera, Casilla 54-D, Temuco, Chile.
| | - R Hunter
- Departament of Mechanical Engineering, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
| | - G Coronado
- School of Industrial Processes, Faculty of Engineering, Universidad Católica de Temuco, Temuco, Chile.
| | - M E Gonzalez
- Departament of Chemical Engineering, Universidad de La Frontera, Casilla 54-D, Temuco, Chile.
| |
Collapse
|
26
|
Valentini T, Lucas S, Cameron L, Dunitz J, Hunter R. WS19-6 Bioorthogonal non-canonical amino acid tagging reveals translationally active subpopulations of the cystic fibrosis lung microbiota. J Cyst Fibros 2019. [DOI: 10.1016/s1569-1993(19)30233-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Abstract
Transposable elements (TEs) are low-complexity elements (e.g., LINEs, SINEs, SVAs, and HERVs) that make up to two-thirds of the human genome. There is mounting evidence that TEs play an essential role in molecular functions that influence genomic plasticity and gene expression regulation. With the advent of next-generation sequencing approaches, our understanding of the relationship between TEs and psychiatric disorders will greatly improve. In this chapter, the Authors comprehensively summarize the state-of the-art of TE research in animal models and humans supporting a framework in which TEs play a functional role in mechanisms affecting a variety of behaviors, including neurodevelopmental, neuropsychiatric, and neurodegenerative disorders. Finally, the Authors discuss recent therapeutic applications raised from the increasing experimental evidence on TE functional mechanisms.
Collapse
Affiliation(s)
- G Guffanti
- McLean Hospital - Harvard Medical School, Belmont, MA, USA.
| | - A Bartlett
- Department of Psychology, University of Massachusetts, Boston, Boston, MA, USA
| | - P DeCrescenzo
- McLean Hospital - Harvard Medical School, Belmont, MA, USA
| | - F Macciardi
- Department of Psychiatry and Human Behavior, University of California, Irvine, Irvine, CA, USA
| | - R Hunter
- Department of Psychology, University of Massachusetts, Boston, Boston, MA, USA
| |
Collapse
|
28
|
Creta A, Providencia R, Karim N, Papageorgiou N, Sporton S, Chow A, Finlay M, Ahsan S, Earley MJ, Khan F, Hunter R, Lowe M, Segal O, Lambiase PD, Schilling RJ. P5773Atrial fibrillation catheter ablation in patients with hypertrophic cardiomyopathy: multi-centre experience and application of HCM-Risk SCD score to predict ablation outcome. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5773] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- A Creta
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - R Providencia
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - N Karim
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - N Papageorgiou
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - S Sporton
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - A Chow
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - M Finlay
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - S Ahsan
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - M J Earley
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - F Khan
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - R Hunter
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - M Lowe
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - O Segal
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - P D Lambiase
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| | - R J Schilling
- Barts Heart Centre, St Bartholomew's Hospital, London, United Kingdom
| |
Collapse
|
29
|
Graham A, Orini M, Martin C, Lowe M, Earley M, Schilling R, Hunter R, Dhinoja M, Lambiase P. 44Early experience of intra-operative use of ECGI during VT ablation. Europace 2017. [DOI: 10.1093/europace/eux283.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
30
|
Srinivasan NT, Orini M, Providencia R, Simon RB, Lowe MD, Segal OR, Chow AW, Ahsan S, Schilling RJ, Hunter R, Taggart P, Lambiase PD. 25First evidence that differences in the t-wave upslope of the body surface ECG reflect right to left dispersion of repolarization in the intact human heart. Europace 2017. [DOI: 10.1093/europace/eux283.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
31
|
Kim MY, Sikkel MB, Hunter R, Haywood G, Tomlinson D, Furniss G, Panagopoulos D, Tayebjee M, Begg G, Ali R, Cantwell C, Gonna H, Sandler B, Lim ZL, Lim PB, Peters NS, Linton N, Kanagaratnam P. 53Generation of the first functional map of left atrial ganglionated plexus sites that induce AV nodal bradycardia. Europace 2017. [DOI: 10.1093/europace/eux283.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
32
|
Providencia R, Albenque JP, Combes S, Vieira M, Khoueiry Z, Honarbakhsh S, Hunter R, Combes N, Boveda S. 36Derivation of a prediction model for the optimization of patient selection for catheter ablation of atrial fibrillation: the AF-FREEDOM score. Europace 2017. [DOI: 10.1093/europace/eux283.045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
33
|
Srinivasan NT, Orini M, Providencia R, Martin C, Dhinoja M, Hunter R, Lowe MD, Khan F, Taggart PD, Schilling RJ, Lambiase PD. 105Investigation of the transmural action potential duration and repolarization properties of scar borderzone in patients undergoing ventricular tachycardia ablation. Europace 2017. [DOI: 10.1093/europace/eux283.099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
34
|
Graham A, Orini M, Martin C, Ahsan S, Chow A, Schilling R, Hunter R, Dhinoja M, Lambiase P. 83Use of ECGi and re-entry vulnerability index to predict VT Re-entry sites in sinus rhythm. Europace 2017. [DOI: 10.1093/europace/eux283.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
35
|
Sawhney V, Domenichini G, Gamble J, Furniss G, Panagopoulos D, Campbell N, Lowe M, Lambiase P, Haywood G, Sporton S, Earley MJ, Dhinoja M, Hunter R, Betts T, Schilling RJ. 239Long-Term follow-up of thromboembolic complications in left ventricular endocardial pacing: outcomes from a multi centre uk registry. Europace 2017. [DOI: 10.1093/ehjci/eux139.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
36
|
Martin CA, Chooneea B, Gajendragadkar PR, Begley DA, Dhinoja M, Earley M, Ezzat V, Grace AA, Heck PM, Hunter R, Lambiase PD, Lowe MD, Schilling RJ, Virdee MS, Chow A. P429UK multi-centre registry of transvenous lead extraction: clinical outcome using different techniques. Europace 2017. [DOI: 10.1093/ehjci/eux141.152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
37
|
Srinivasan NT, Orini M, Providencia R, Simon RB, Lowe MD, Segal OR, Chow AW, Schilling RJ, Hunter R, Taggart PD, Lambiase PD. P1022Differences in the upslope of the body surface ECG-Twave reflect dispersion of repolarization in the intact human heart. Europace 2017. [DOI: 10.1093/ehjci/eux151.203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
38
|
Leo M, Pedersen M, Bowers R, Webster D, Kalla M, Ginks M, Bashir Y, Hunter R, Rajappan K, Betts TR. P1415Should radiofrequency power be titrated according to BMI in order to reduce esophageal injury during atrial fibrillation ablation? Europace 2017. [DOI: 10.1093/ehjci/eux158.043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
39
|
Nielsen G, Buszewicz M, Stevenson F, Hunter R, Holt K, Dudziec M, Ricciardi L, Marsden J, Joyce E, Edwards MJ. Randomised feasibility study of physiotherapy for patients with functional motor symptoms. J Neurol Neurosurg Psychiatry 2017; 88:484-490. [PMID: 27694498 DOI: 10.1136/jnnp-2016-314408] [Citation(s) in RCA: 138] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/30/2016] [Accepted: 09/06/2016] [Indexed: 11/04/2022]
Abstract
OBJECTIVE To determine the feasibility of conducting a randomised controlled trial of a specialist physiotherapy intervention for functional motor symptoms (FMS). METHODS A randomised feasibility study was conducted recruiting patients with a clinically established diagnosis of FMS from a tertiary neurology clinic in London, UK. Participants were randomised to the intervention or a treatment as usual control. Measures of feasibility and clinical outcome were collected and assessed at 6 months. RESULTS 60 individuals were recruited over a 9-month period. Three withdrew, leaving 29 intervention and 28 controls participants in the final analysis. 32% of patients with FMS met the inclusion criteria, of which 90% enrolled. Acceptability of the intervention was high and there were no adverse events. At 6 months, 72% of the intervention group rated their symptoms as improved, compared to 18% in the control group. There was a moderate to large treatment effect across a range of outcomes, including three of eight Short Form 36 (SF36) domains (d=0.46-0.79). The SF36 Physical function was found to be a suitable primary outcome measure for a future trial; adjusted mean difference 19.8 (95% CI 10.2 to 29.5). The additional quality adjusted life years (QALY) with intervention was 0.08 (95% CI 0.03 to 0.13), the mean incremental cost per QALY gained was £12 087. CONCLUSIONS This feasibility study demonstrated high rates of recruitment, retention and acceptability. Clinical effect size was moderate to large with high probability of being cost-effective. A randomised controlled trial is needed. TRIAL REGISTRATION NUMBER NCT02275000; Results.
Collapse
Affiliation(s)
- G Nielsen
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK.,Therapy Services Department, National Hospital for Neurology and Neurosurgery, London, UK
| | - M Buszewicz
- Research Department of Primary Care and Population Health, University College London, London, UK
| | - F Stevenson
- Research Department of Primary Care and Population Health, University College London, London, UK
| | - R Hunter
- Research Department of Primary Care and Population Health, University College London, London, UK
| | - K Holt
- Therapy Services Department, National Hospital for Neurology and Neurosurgery, London, UK.,Institute of Cardiovascular and Cell Sciences, St Georges University of London, London, UK
| | - M Dudziec
- Therapy Services Department, National Hospital for Neurology and Neurosurgery, London, UK
| | - L Ricciardi
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK
| | - J Marsden
- School of Health Professions, Peninsula Allied Health Centre, University of Plymouth, Plymouth, UK
| | - E Joyce
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK
| | - M J Edwards
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, London, UK.,Institute of Cardiovascular and Cell Sciences, St Georges University of London, London, UK
| |
Collapse
|
40
|
Srinivasan NT, Orini M, Providencia R, Martin C, Dhinoja M, Hunter R, Lowe MD, Khan F, Taggart PD, Schilling RJ, Lambiase PD. 117Investigation of the transmural APD properties of scar borderzone in patients undergoing ventricular tachycardia ablation. Europace 2017. [DOI: 10.1093/ehjci/eux135.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
41
|
Lu G, Rao M, Zhu P, Tian X, Linendoll N, Pilichowska M, Glass WF, Hunter R, Zhu J. P09.63 Postmortem evaluation of end-organ toxicity in patients with glioblastoma treated with temozolomide, bevacizumab and irinotecan. Neuro Oncol 2017. [DOI: 10.1093/neuonc/nox036.318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
42
|
O'Toole D, Hunter R, Allen T, Zekarias B, Lehmann J, Kim KS, Grab D, Corbeil LB. Effect of Histophilus somni on Heart and Brain Microvascular Endothelial Cells. Vet Pathol 2017; 54:629-639. [PMID: 28178428 DOI: 10.1177/0300985817691581] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Histophilus somni is a pathogenic gram-negative bacterium responsible for pneumonia and septicemia in cattle. Sequelae include infectious thrombotic meningoencephalitis (ITME), myocarditis, arthritis, and abortion. These syndromes are associated with widespread vasculitis and thrombosis, implicating a role for endothelium in pathogenesis. Histopathologic and immunohistochemical investigation of 10 natural cases of bovine H. somni myocarditis and 1 case of ITME revealed intravascular H. somni in large biofilm-like aggregates adherent to the luminal surface of microvascular endothelium. Ultrastructurally, bacterial communities were extracellular and closely associated with degenerating or contracted endothelial cells. Histophilus somni was identified by bacterial culture and/or immunohistochemistry. Western blots of the bacterial isolates revealed that they expressed the immunodominant protective 40 kDa OMP and immunoglobulin-binding protein A (IbpA) antigens. The latter is a large surface antigen and shed fibrillar antigen with multiple domains. The cytotoxic DR2Fic domain of IbpA was conserved as demonstrated by polymerase chain reaction. Treatment of endothelial cells in vitro with IbpA in crude culture supernatants or purified recombinant GST-IbpA DR2Fic (rDR2) cytotoxin induced retraction of cultured bovine brain microvascular endothelial cells. By contrast, no retraction of bovine endothelium was induced by mutant rDR2H/A with an inactive Fic motif or by a GST control, indicating that the cytotoxic DR2Fic motif plays an important role in endothelial cell retraction in vasculitis. The formation of biofilm-like aggregates by H. somni on bovine microvascular endothelium may be fundamental to its pathogenesis in heart and brain.
Collapse
Affiliation(s)
- D O'Toole
- 1 Wyoming State Veterinary Laboratory, University of Wyoming, Laramie, WY, USA
| | - R Hunter
- 2 Hunter Cattle Company LLC, Wheatland, WY, USA
| | - T Allen
- 1 Wyoming State Veterinary Laboratory, University of Wyoming, Laramie, WY, USA.,3 Current: Advantage Veterinary, Nampa, ID, USA
| | - B Zekarias
- 4 Department of Pathology, University of California, San Diego, CA, USA.,5 Current: Ceva-Biommune, Lenexa, KS, USA
| | - J Lehmann
- 5 Current: Ceva-Biommune, Lenexa, KS, USA.,6 Current: BioLegend San Diego, CA, USA
| | - K S Kim
- 7 School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - D Grab
- 7 School of Medicine, Johns Hopkins University, Baltimore, MD, USA
| | - L B Corbeil
- 4 Department of Pathology, University of California, San Diego, CA, USA
| |
Collapse
|
43
|
Raine D, Begg G, Moore J, Taylor E, Buck R, Honarbakhsh S, Yew Ding W, Redfearn D, Opel A, Opel A, Thomas D, Prakash K, Thomas D, Khokhar A, Honarbakhsh S, Tairova S, Getman N, McAloon C, Honarbakhsh S, Shah M, Al-Lawati K, Al-Lawati K, Ensam B, Collins G, Akbar S, Merghani A, Furniss G, Yones E, Vijayashankar SS, Vijayashankar SS, Shariat H, Moss A, Yeoh A, Sadiq A, Taylor R, Edwards T, Nizam ud Din K, Langley P, Shepherd E, Murray S, Lord S, Bourke J, Plein S, Lip G, Tayebjee MH, Owen N, White S, O'Neill M, Hughes L, Carroll S, Moss-Morris R, Baker V, Kirkby C, Patel K, Robinson G, Antoniou S, Richmond L, Ullah W, Hunter R, Finlay M, Earley M, Whitbread M, Schilling R, Cooper R, Modi S, Somani R, Ng A, Hobson N, Caldwell J, Hadjivassilev S, Ang R, Finlay M, Dhinoja M, Earley M, Sporton S, Schilling R, Hunter R, Hadjivassilev S, Earley M, Lambiase P, Turley A, Child N, Linker N, Owens W, James S, Milner J, Tayebjee M, Sibley J, Griffiths A, Meredith T, Basher Y, Betts T, Rajappan K, Lambiase P, Lowe M, Hunter R, Schilling R, Finlay M, Rakhimbaeva G, Akramova N, Getman T, Hamborg T, O'Hare J, Randeva H, Osman F, Srinivasan N, Kirkby C, Firman E, Tobin L, Murphy C, Lowe M, Hunter R, Finlay M, Schilling R, Lambiase P, Mohan P, Salahia G, Lim H, Lim HS, Batchvarov V, Brennan P, Cox A, Muir A, Behr E, Hamill S, Laventure C, Newell S, Gordon B, Bashir K, Chuen J, Foster W, Yusuf S, Osman F, Hayat S, Panagopoulos D, Davies E, Tomlinson D, Haywood G, Mullan J, Kelland N, Horwood A, Connell N, Odams S, Maloney J, Shetty A, Kyriacou A, Sahu J, Lee J, Uzun O, Wong A, Ashtekar S, Uzun O, Wong A, Ashtekar S, Hashemi J, Gazor S, Redfearn D, Song A, Jenkins J, Glancy J, Wilson D, Sammut E, Diab I, Cripps T, Gill A, Abbas S, Enye J, Wahab A, Elshafie S, Ling K, Carey P, Chatterjee D, Timbrell S, Tufail W, Why H, Martos R, Thornley A, James S, Turley A, Bates M, Linker N, Hassan E, Quick J, Cowell R, Ho E. POSTERS (1)59MULTIPOLAR CONTACT MAPPING GUIDED ABLATION OF TEMPORALLY STABLE HIGH FREQUENCY AND COMPLEX FRACTIONATED ATRIAL ELECTROGRAM SITES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION60INTRA-CARDIAC AND PERIPHERAL LEVELS OF BIOCHEMICAL MARKERS OF FIBROSES IN PATIENTS UNDERGOING CATHETER ABLATION FOR ATRIAL FIBRILATION61THE DON'T WAIT TO ANTICOAGULATE PROJECT (DWAC) BY THE WEST OF ENGLAND ACADEMIC HEALTH SCIENCE NETWORK (AHSN) OPTIMISES STROKE PREVENTION FOR PATIENTS WITH ATRIAL FIBRILLATION (AF) WITHIN PRIMARY CARE IN LINE WITH NICE CG180 IN THE WEST OF ENGLAND62ILLNESS AND TREATMENT REPRESENTATIONS, COPING AND DISTRESS: VICIOUS CYCLES OF EVERYDAY EXPERIENCES IN PATIENTS WITH PERSISTENT ATRIAL FIBRILLATION63THE NEEDS OF THE ADOLESCENT LIVING WITH AN INHERITED CARDIAC CONDITION: THE PATIENTS' PERSPECTIVE64SAFETY AND EFFICACY OF PARAMEDIC TREATMENT OF REGULAR SUPRAVENTRICULAR TACHYCARDIA (PARA-SVT)65NATURAL PROGRESSION OF QRS DURATION FOLLOWING IMPLATABLE CARDIOVERTER DEFIBRILLATORS (ICD) - IMPLANTATION66COMPARISON OF EFFICACY OF VOLTAGE DIRECTED CAVOTRICUSPID ISTHMUS ABLATION USING MINI VS CONVENTIONAL ELETRODES67CRYOBALLOON ABLATION (CRYO) FOR ATRIAL FIBRILLATION (AF) CANNOT BE GUIDED BY TEMPERATURE END-POINTS ALONE68MODERATOR BAND ECTOPY UNMASKED BY ADENOSINE AS A CAUSE OF ECTOPIC TRIGGERED IDIOPATHIC VF69EARLY CLINICAL EXPERIENCE WITH TARGETED SITE SELECTION FOR THE WiCS-LV ELECTRODE FOR CRT70DOES VECTOR MAPPING PRIOR TO IMPLANTABLE LOOP RECORDER INSERTION IMPROVE THE DETECTION OF ARRHYTHMIA?71THE ROLE OF SPECKLE TRACKING STRAIN IMAGING IN ASSESSING LEFT VENTRICULAR RESPONSE TO CARDIAC RESYNCHRONISATION THERAPY IN RESPONDERS AND NON-RESPONDERS72EVALUATING PATIENTS' EXPERIENCE AND SATISFACTION OF THE ATRIAL FIBRILLATION ABLATION PROCEDURE: A RETROSPECTIVE ANALYSIS73TROUBLESHOOTING LV LEAD IMPLANTATION - NOVEL “UNIRAIL TECHNIQUE”74SUBCLINICAL ATHEROSCELEROSIS AND COGNITIVE IMPAIRMENT75EFFECT OF LOZARTANE ON DEVELOPMENT OF THE ELECTRICAL INSTABILITY OF THE MYOCARDIUM76THE INTERPLAY BETWEEN BODY COMPOSITION AND LEFT VENTRICULAR REMODELLING IN CARDIAC RESYNCHRONISATION THERAPY77FAMILY SCREENING IN IDIOPATHIC VENTRICULAR FIBRILLATION78MANAGEMENT OF ATRIAL FIBRILLATION IN A LARGE TEACHING HOSPITAL79THE EFFECT OF LEFT VENTRICULAR LEAD POSITION ON SURVIVAL IN PATIENTS WITH BINVENTRICULAR PACEMAKRS/DEFIBRILLATORS80ACUTE DEVICE IMPLANT-RELATED COMPLICATIONS DO NOT INCREASE LATE MORTALITY81ABORTED CARIDAC ARREST AS THE SENTINEL PRESENTATION IN A COHORT OF PATIENTS WITH THE CONCEALED BRUGADA PHENOTYPE82POST-CARDIAC DEVICE IMPLANTATION MOBILISATION ADVICE: A NATIONAL SURVEY83DO RISK SCORES DEVELOPED TO PROTECT ONE-YEAR MORTALITY ACTUALLY HELP IN ACCURATELY SELECTING PATIENTS RECEIVING PRIMARY PREVENTION ICD?84ATRIAL TACHYCARDIA ARISING FROM THE NON-CORONARY AORTIC CUSP85THE EFFECT OF DIFFERENT ATRIAL FIBRILLATION ABLATION STRATEGIES ON SURFACE ECG P WAVE DURATION86PRESCRIBING DRONEDARONE: HOW IS IT DONE ACROSS THE UK AND IS IT SAFE?87A CASE OF WIDE COMPLEX TACHYCARDIA88TRANSITION TO DEDICATED DAY CASE DEVICES - SAFETY AND EFFICACY IN A LARGE VOLUME CENTRE89SEQUENTIAL REGIONAL DOMINANT FREQUENCY MAPPING DURING ATRIAL FIBRILLATION: A NOVEL TEQUNIQUE90ELECTIVE CARDIOVERSION ENERGY PROTOCOLS: A RETROSPECTIVE COMPARISON OF ESCALATION STRATEGIES91THE INCIDENCE OF CLINCALLY RELEVANT HAEMATOMAS WITH PERIOPERATIVE USE OF NEWER P2Y12 INHIBITORS AND INTERRUPTED NOAC THERAPY IN CARDIAC IMPLANTABLE ELECTRONIC DEVICE INSERTION92AN AUDIT OF THE OUTCOMES FOR CHEMICAL AND DIRECT CURRENT CARDIOVERSION FOR ATRIAL FIBRILLATION AT OUR DGH OVER A 3 YEAR DURATION93REAL LIFE ACUTE MANAGEMET OF HAEMODYNAMICALLY TOLERATED MONOMORPHIC VENTRICULAR TACHYCARDIA. ARE WE MAKING EVIDENCE BASED ON DECISIONS?94A SERVICE EVALUATION TO ASSESS THE EFFICACY AND SAFETY OF NOVEL ORAL ANTICOAGULANTS VERSUS WARFARIN FOR ELECTIVE CARDIVERSION IN PATIENTS WITH NON VALVULAR AF IN A NURSE LED CARDIOVERSION SERVICE95PICK UP RATE OF IMPLANTED LOOP RECORDER AT A DISTRICT HOSPITAL. Europace 2016. [DOI: 10.1093/europace/euw273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
44
|
Champney F, Maddock L, Welford J, Kemp J, Allan V, Persidskikh Y, Orini M, Ang R, Workman A, Wong L, Honarbakhsh S, Leong K, Silberbauer J, O'Nunain S, Gomes J, McCready J, Bostock J, Shaw K, McKenna C, Bailey J, Honarbakhsh S, Casas J, Wallace J, Hunter R, Schilling R, Perel P, Morley K, Banerjee A, Hemingway H, Mrochak A, Ilyina T, Goncharik D, Chasnoits A, Plashinskaya L, Taggart P, Hayward M, Lambiase P, Hosford P, Kasparov S, Lambiase P, Tinker A, Gourine A, Kettlewell S, Dempster J, Colman M, Rankin A, Myles R, Smith G, Tester D, Jaye A, FitzPatrick D, Evans M, Fleming P, Jeffrey I, Cohen M, Simpson M, Ackerman M, Behr E, Srinivasan N, Kirkby C, Firman E, Tobin L, Murphy C, Lowe M, Hunter RJ, Finlay M, Schilling RJ, Lambiase PD, Ng F, Tomlinson L, Nuthoo S, Cajilog E, Lefroy D, Qureshi N, Koa-Wing M, Whinnett Z, Linton N, Davies D, Lim P, Peters N, Kanagaratnam P, Varnava A. ORAL ABSTRACTS (1)Allied Professionals7CRYOABLATION FOR PAROXYSMAL ATRIAL FIBRILLATION - IS AN EP LAB REQUIRED?8A PATHWAY TO SAFETY - ANTICOAGULATION COMPLIANCE IN CIED PATIENTS WITH AF9UNDERSTANDING THE WAYS IN WHICH OCCUPATION IS AFFECTED BY POSTURAL TACHYCARDIA SYNDROME: A UK OCCUPATIONAL THERAPY PERSPECTIVE10DEVELOPMENT OF AN INTERGRATED SUPPORT PATHWAY FOR PATIENTS FULFILLING NICE CRITERIA FOR AN INTERNAL CARDIOVASCULAR DEBRIBRILLATOR (ICD) IN A DISTRICT GENERAL HOSPITAL11ARE CARDIOVASCULAR RISK FACTORS ALSO ASSOCIATED WITH THE INCIDENCE OF ATRIAL FIBRILLATION? A SYSTEMATIC REVIEW AND FIELD SYNOPSIS OF 23 FACTORS IN 32 INITIALLY HEALTHY COHORTS OF 20 MILLION PARTICIPANTS12BRAIN MRI FINDINGS IN PATIENTS WITH ATRIAL FIBRILLATION UNDERGOING CARDIOVERSIONBasic Science/Sudden Cardiac Death13PRELIMINARY ASSESSMENT OF THE “RE-ENTRY VULNERABILITY INDEX” AS A MARKER OF CARDIAC INSTABILITY IN THE HUMAN HEART USING WHOLE-HEART CONTACT EPICARDIAL MAPPING14OPTOGENETIC STIMULATION OF BRAINSTEM'S VAGAL PREGANGLIONIC NEURONES IS ASSOCIATED WITH NEURONAL NITRIC OXIDE SYNTHASE-DEPENDENT PROLONGATION OF VENTRICULAR EFFECTIVE REFRACTORY PERIOD15A DYNAMIC-CLAMP STUDY OF L-TYPE Ca2+ CURRENT IN RABBIT AND HUMAN ATRIAL MYOCYTES: THE CONTRIBUTION OF WINDOW ICaL TO EARLY AFTERDEPOLARISATIONS16WHOLE EXOME SEQUENCING IN SUDDEN INFANT DEATH SYNDROME17MEDIUM TERM SURVIVAL AND FAMILY SCREENING OUTCOMES IN AN IDIOPATHIC VENTRICULAR FIBRILLATION COHORT - A MULTICENTRE EXPERIENCE18CLINICAL CHARACTERISTICS OF SCD SURVIVORS WITH BRUGADA SYNDROME:- ARE SPONSANEOUS TYPE I ECG AND PREVIOUS SYNCOPE REALLY ASSOCIATED WITH HIGH RISK? Europace 2016. [DOI: 10.1093/europace/euw270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
45
|
Furniss G, Opel A, Hussein A, Pearman C, Grace A, Connelly D, Orlowski A, Banerjee A, McNicholas T, Providencia R, Montañes M, Providencia R, Panagopoulos D, Tomlinson D, Dalrymple-Hay M, Haywood G, Butler A, Ang R, Ullah W, Schwartz R, Fannon M, Finlay M, Hunter R, Schilling R, Das M, Asfour I, Morgan M, Ronayne C, Shaw M, Snowdon R, Gupta D, Todd D, King R, Hall M, Modi S, Mediratta N, Gupta D, Reddy V, Neuzil P, Willems S, Verma A, Heck P, Schilling R, Lambiase P, Hall M, Nicholl B, McQueenie R, Jani BD, McKeag N, Gallacher K, Mair F, Heaton D, Macdonald J, Burnell J, Ryan R, Marshall T, Sutton C, O'Callaghan S, Kenny R, Karim N, Srinivasan N, Ferreira M, Goncalves L, Lambiase P, Toledano M, Field E, Walsh H, Maguire K, Cervi E, Kaski J, Perez Tome M, Pantazis A, Elliott P, Lambiase P, Segal O. ORAL ABSTRACTS (3)EP & Ablation31LEFT ATRIAL POSTERIOR WALL ISOLATION (THE “BOX LESION PATTERN”) IN THE TREATMENT OF ATRIAL FIBRILLATION: A SINGLE CENTRE EXPERIENCE32DAY CASE CRYOBLATION (CRYO) FOR PAROXYSMAL ATRIAL FIBRILLATION (pAF) IN THE DISTRICT GENERAL HOSPITAL IS SAFE AND EFFECTIVE IF DONE IN HIGH VOLUME WITH EXPERIENCED OPERATORS33ABLATION INDEX-GUIDED PULMONARY VEIN ISOLATION FOR ATRIAL FIBRILLATION MAY IMPROVE CLINICAL OUTCOMES IN COMPARISON TO CONTACT FORCE-GUIDED ABLATION34THE PROCEDURAL COMPLICATION RATES AND SHORT-TERM SUCCESS RATES OF THORACOSCOPIC AF ABLATION DURING THE INSTITUTIONAL LEARNING CURVE35INITIAL PROCEDURAL RESULTS FROM DDRAMATIC-SVT STUDY: DD MECHANISM IDENTIFICATION AND LOCALISATION USING DIPOLE DENSITY MAPPING TO GUIDE ABLATION STRATEGY36MORBIDITY AND MORTALITY IN MIDDLE-AGED INDIVIDUALS WITH ATRIAL FIBRILLATION: UK BIOBANK DATAClinical EP37THE GM AHSN AF LANDSCAPE TOOL: A SHARED PUBLIC DATA PLATFORM TO PROMOTE QUALITY IMPROVEMENTS AND IDENTIFY OPPORTUNITIES TO PREVENT AF-RELATED STROKE IN THE DEVOLVED GREATER MANCHESTER HEALTH SYSTEM38REAL WORLD PERSISTENCE, ADHERENCE AND SWITCH-OVER ACROSS ANTICOAGULANTS IN ATRIAL FIBRILLATION-A NATIONAL POPULATION-BASED STUDY39ORTHOSTATIC HYPOTENSION AND ATRIAL FIBRILLATION40PREVALENCE OF SHORT QT AND CRITERIA OF SEVERITY IN A YOUNG ASYMPTOMATIC COHORT41SURFACE ELECTROCARDIOGRAPHIC FEATURES AND PREVALENCE OF ARRHYTHMIAS IN PAEDIATRIC FRIEDREICH'S ATAXIA42RISK STRATIFICATION OF TYPE 1 MYOTONIC DYSTROPHY: IS THE ECG ACCURATE ENOUGH TO SELECT PATIENTS AT RISK OF BRADYARRHYTHMIC EVENTS? Europace 2016. [DOI: 10.1093/europace/euw272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
|
46
|
Philippsen T, Orini M, Martin C, Volkova E, Ormerod J, Sohaib S, Elamin N, Blake S, Sawhney V, Ahmad S, Waring O, Bowers R, Raiman L, Hazelwood T, Mills R, Corrado C, Honarbakhsh S, Von Maydell A, Norrish G, Chubb H, Chubb H, Chubb H, Toledano M, Ruiz A, van Zalen J, Foley P, Pearman C, Rehal O, Foley P, Wong L, Foley P, Pearman C, Brahmbhatt D, Khan H, Wardley J, Akbar S, Christensen L, Hansen M, Brandes A, Tinker A, Munroe P, Lambiase P, Honarbakhsh S, McLean A, Lambiase P, Schilling R, Lane J, Chow A, Earley M, Hunter R, Khan F, Lambiase P, Schilling R, Sporton S, Dhinoja M, Camm C, Xavier R, de Sousa M, Betts T, Shun-Shin M, Wright I, Lim E, Lim P, Koawing M, Lefroy D, Linton N, Davies D, Peters N, Kanagaratnam P, Francis D, Whinnett Z, Khan M, Bowes R, Sahu J, Sheridan P, Rogers D, Kyriacou A, Kelland N, Lewis N, Lee J, Segall E, Diab I, Breitenstein A, Ullah W, Sporton S, Earley M, Finlay M, Dhinoja M, Schilling R, Hunter R, Ahmed M, Petkar S, Davidson N, Stout M, Pearce KP, Leo M, Ginks M, Rajappan K, Bashir Y, Balasubramaniam R, Sopher S, Betts T, Paisey J, Cheong J, Roy D, Adhya S, Williams S, O'Neill M, Niederer S, Providencia R, Srinivasan N, Ahsan S, Lowe M, Segal O, Hunter R, Finlay M, Earley M, Schilling R, Lambiase P, Stella S, Cantwell C, Chowdhury R, Kim S, Linton N, Whinnett Z, Koa-Wing M, Lefroy D, Davies DW, Kanagaratnam P, Lim PB, Qureshi N, Peters N, Cantarutti N, Limongelli G, Elliott P, Kaski J, Williams S, Lal K, Harrison J, Whitaker J, Kiedrowicz R, Wright M, O'Neill M, Harrison J, Whitaker J, Williams S, Wright M, Schaeffter T, Razavi R, O'Neill M, Karim R, Williams S, Harrison J, Whitaker J, Wright M, Schaeffter T, Razavi R, O'Neill M, Montanes M, Ella Field E, Walsh H, Callaghan N, Till J, Mangat J, Lowe M, Kaski J, Ruiz Duthil A, Li A, Saba M, Patel N, Beale L, Brickley G, Lloyd G, French A, Khavandi A, McCrea W, Barnes E, Chandrasekaran B, Parry J, Garth L, Chapman J, Todd D, Hobbs J, Modi S, Waktare J, Hall M, Gupta D, Snowdon R, Papageorgiou N, Providência R, Falconer D, Sewart E, Ahsan S, Segal O, Ezzat V, Rowland E, Lowe M, Lambiase P, Chow A, Swift M, Charlton P, James J, Colling A, Barnes E, Starling L, Kontogeorgis A, Roses-Noguer F, Wong T, Jarman J, Clague J, Till J, Colling A, James J, Hawkins M, Burnell S, Chandrasekaran B, Coulson J, Smith L, Choudhury M, Oguguo E, Boyett M, Morris G, Flinn W, Chari A, Belham M, Pugh P, Somarakis K, Parasa R, Allata A, Hashim H, Mathew T, Kayasundar S, Venables P, Quinn J, Ivanova J, Brown S, Oliver R, Lyons M, Chuen M, Walsh J, Robinson T, Staniforth A, Ahsan A, Jamil-Copley S. POSTERS (2)96CONTINUOUS VERSUS INTERMITTENT MONITORING FOR DETECTION OF SUBCLINICAL ATRIAL FIBRILLATION IN HIGH-RISK PATIENTS97HIGH DAY-TO-DAY INTRA-INDIVIDUAL REPRODUCIBILITY OF THE HEART RATE RESPONSE TO EXERCISE IN THE UK BIOBANK DATA98USE OF NOVEL GLOBAL ULTRASOUND IMAGING AND CONTINUEOUS DIPOLE DENSITY MAPPING TO GUIDE ABLATION IN MACRO-REENTRANT TACHYCARDIAS99ANTICOAGULATION AND THE RISK OF COMPLICATIONS IN PATIENTS UNDERGOING VT AND PVC ABLATION100NON-SUSTAINED VENTRICULAR TACHYCARDIA FREQUENTLY PRECEDES CARDIAC ARREST IN PATIENTS WITH BRUGADA SYNDROME101USING HIGH PRECISION HAEMODYNAMIC MEASUREMENTS TO ASSESS DIFFERENCES IN AV OPTIMUM BETWEEN DIFFERENT LEFT VENTRICULAR LEAD POSITIONS IN BIVENTRICULAR PACING102CAN WE PREDICT MEDIUM TERM MORTALITY FROM TRANSVENOUS LEAD EXTRACTION PRE-OPERATIVELY?103PREVENTION OF UNECESSARY ADMISSIONS IN ATRIAL FIBRILLATION104EPICARDIAL CATHETER ABLATION FOR VENTRICULAR TACHYCARDIA ON UNINTERRUPTED WARFARIN: A SAFE APPROACH?105HOW WELL DOES THE NATIONAL INSTITUTE OF CLINICAL EXCELLENCE (NICE) GUIDENCE ON TRANSIENT LOSS OF CONSCIOUSNESS (T-LoC) WORK IN A REAL WORLD? AN AUDIT OF THE SECOND STAGE SPECIALIST CARDIOVASCULAT ASSESSMENT AND DIAGNOSIS106DETECTION OF ATRIAL FIBRILLATION IN COMMUNITY LOCATIONS USING NOVEL TECHNOLOGY'S AS A METHOD OF STROKE PREVENTION IN THE OVER 65'S ASYMPTOMATIC POPULATION - SHOULD IT BECOME STANDARD PRACTISE?107HIGH-DOSE ISOPRENALINE INFUSION AS A METHOD OF INDUCTION OF ATRIAL FIBRILLATION: A MULTI-CENTRE, PLACEBO CONTROLLED CLINICAL TRIAL IN PATIENTS WITH VARYING ARRHYTHMIC RISK108PACEMAKER COMPLICATIONS IN A DISTRICT GENERAL HOSPITAL109CARDIAC RESYNCHRONISATION THERAPY: A TRADE-OFF BETWEEN LEFT VENTRICULAR VOLTAGE OUTPUT AND EJECTION FRACTION?110RAPID DETERIORATION IN LEFT VENTRICULAR FUNCTION AND ACUTE HEART FAILURE AFTER DUAL CHAMBER PACEMAKER INSERTION WITH RESOLUTION FOLLOWING BIVENTRICULAR PACING111LOCALLY PERSONALISED ATRIAL ELECTROPHYSIOLOGY MODELS FROM PENTARAY CATHETER MEASUREMENTS112EVALUATION OF SUBCUTANEOUS ICD VERSUS TRANSVENOUS ICD- A PROPENSITY MATCHED COST-EFFICACY ANALYSIS OF COMPLICATIONS & OUTCOMES113LOCALISING DRIVERS USING ORGANISATIONAL INDEX IN CONTACT MAPPING OF HUMAN PERSISTENT ATRIAL FIBRILLATION114RISK FACTORS FOR SUDDEN CARDIAC DEATH IN PAEDIATRIC HYPERTROPHIC CARDIOMYOPATHY: A SYSTEMATIC REVIEW AND META-ANALYSIS115EFFECT OF CATHETER STABILITY AND CONTACT FORCE ON VISITAG DENSITY DURING PULMONARY VEIN ISOLATION116HEPATIC CAPSULE ENHANCEMENT IS COMMONLY SEEN DURING MR-GUIDED ABLATION OF ATRIAL FLUTTER: A MECHANISTIC INSIGHT INTO PROCEDURAL PAIN117DOES HIGHER CONTACT FORCE IMPAIR LESION FORMATION AT THE CAVOTRICUSPID ISTHMUS? INSIGHTS FROM MR-GUIDED ABLATION OF ATRIAL FLUTTER118CLINICAL CHARACTERISATION OF A MALIGNANT SCN5A MUTATION IN CHILDHOOD119RADIOFREQUENCY ASSOCIATED VENTRICULAR FIBRILLATION120CONTRACTILE RESERVE EXPRESSED AS SYSTOLIC VELOCITY DOES NOT PREDICT RESPONSE TO CRT121DAY-CASE DEVICES - A RETROSPECTIVE STUDY USING PATIENT CODING DATA122PATIENTS UNDERGOING SVT ABLATION HAVE A HIGH INCIDENCE OF SECONDARY ARRHYTHMIA ON FOLLOW UP: IMPLICATIONS FOR PRE-PROCEDURE COUNSELLING123PROGNOSTIC ROLE OF HAEMOGLOBINN AND RED BLOOD CELL DITRIBUTION WIDTH IN PATIENTS WITH HEART FAILURE UNDERGOING CARDIAC RESYNCHRONIZATION THERAPY124REMOTE MONITORING AND FOLLOW UP DEVICES125A 20-YEAR, SINGLE-CENTRE EXPERIENCE OF IMPLANTABLE CARDIOVERTER DEFIBRILLATORS (ICD) IN CHILDREN: TIME TO CONSIDER THE SUBCUTANEOUS ICD?126EXPERIENCE OF MAGNETIC REASONANCE IMAGING (MEI) IN PATIENTS WITH MRI CONDITIONAL DEVICES127THE SINUS BRADYCARDIA SEEN IN ATHLETES IS NOT CAUSED BY ENHANCED VAGAL TONE BUT INSTEAD REFLECTS INTRINSIC CHANGES IN THE SINUS NODE REVEALED BY
I
(F) BLOCKADE128SUCCESSFUL DAY-CASE PACEMAKER IMPLANTATION - AN EIGHT YEAR SINGLE-CENTRE EXPERIENCE129LEFT VENTRICULAR INDEX MASS ASSOCIATED WITH ESC HYPERTROPHIC CARDIOMYOPATHY RISK SCORE IN PATIENTS WITH ICDs: A TERTIARY CENTRE HCM REGISTRY130A DGH EXPERIENCE OF DAY-CASE CARDIAC PACEMAKER IMPLANTATION131IS PRE-PROCEDURAL FASTING A NECESSITY FOR SAFE PACEMAKER IMPLANTATION? Europace 2016. [DOI: 10.1093/europace/euw274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
47
|
Martin C, Papageorgiou N, Srinivasan N, Luther V, Ang R, Saberwal B, Sawhney V, Martin C, Orini M, Srinivasan N, Bhar-Amato J, Chow A, Lowe M, Simon R, Lambiase P, Providência R, Srinivasan N, Bronis K, Moscoso Costa F, Cavaco D, Adragao P, Tousoulis D, Hunter R, Schilling R, Segal O, Chow A, Rowland E, Lowe M, Lambiase P, Orini M, Providencia R, Simon R, Khan F, Segal O, Ahsan S, Chow A, Lowe M, Schilling R, Taggart P, Lambiase P, Linton N, Jamil-Copley S, Koa-Wing M, Lim P, Qureshi N, Whinnett Z, Davies D, Peters N, Kanagaratnam P, Opel A, Ullah W, Baker V, Finlay M, Dhinoja M, Earley M, Sporton S, Hunter R, Schilling R, Roy A, Perera D, Sporton S, Dhinoja M, Segal O, Lambiase P, Lowe M, Chow A, Hunter R, Rowland E, Khan F, Ezzat V, Providencia R, Earley M, Finlay M, Schilling R, Ahsan S, Bacuetes EB, Wray MW, Dhinoja MD, Earley ME, Schilling RJS, Sporton SS, Curtain J, Gajendragadkar P, Begley D, Fynn S, Grace A, Heck P, Virdee M, Salaunkey K, Agarwal S. MODERATED POSTERS (2)51GLOBAL HIGH DENSITY MAPPING OF RE-ENTRY VULNERABILITY INDEX INDENTIFIES SITES OF RIGHT VENTRICULAR ARRHYTHMIA INITIATION IN BRUGADA SYNDROME AND ARVC52THE ROLE OF ADENOSINE-GUIDED PULMONARY VEIN ISOLATION IN PATIENTS UNDERGOING ATRIAL FIBRILLATION ABLATION:AN UPDATED META-ANALYSIS53FIRST EVIDENT THAT T-PEAK AND TPEAK-TEND CORRELATE WITH RIGHT TO LEFT AND TRANSMURAL DYNAMIC DISPERSION OF REPOLARIZATION IN THE INTACT HUMAN HEART54RIPPLE MAPPING VENTRICULAR SCAR TO CHARACTERIZE CHANNELS SUPPORTING RE-ENTRANT TACHYCARDIA AS A GUIDE TO ABLATION55LONG TERM DURABILITY OF PULMONARY VEIN ISOLATION: INSIGHTS FROM A RANDOMISED TRIAL OF CRYOBALLOON VERSUS RADIOFREQUENCY ABLATION FOR A COMBINED APPROACH56A SINGLE-CENTRE EXPERIENCE OF THE CONVERGENT PROCEDURE FOR THE TREATMENT OF LONG-STANDING PERSISTENT ATRIAL FIBRILLATION57MODERATE SEDATION IN THE CARDIAC ELECTROPHYSIOLOGY LABORATORY: A RETROSPECTIVE ANALYSIS TO ASSESS SAFETY58USE OF GENERAL ANAESTHESIA IN CATHETER ABLATION OF PERSISTENT AF: IMPROVED OUTCOME AND COST EFFECTIVENESS:. Europace 2016. [DOI: 10.1093/europace/euw269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
48
|
Ng F, Lane J, Nisbet A, Betts TR, Arathoon N, Hayward C, Opel A, Abozguia K, Behradfar E, Debney M, Nygren A, Hartley A, Lyon A, Efimov I, Vigmond E, Peters N, Montaigne D, Tinker A, Walters T, Wong M, Morton J, Sparks P, Kistler P, Kalman J, Leo M, Panikker S, Kanagaratnam P, Koa-Wing M, Davies D, Hildick-Smith D, Wynne DG, Ormerod O, Segal OR, Chow AW, Todd D, Cabrera Gomes S, Kirkwood GJ, Fox D, Pepper C, Foran J, Wong T, Patel H, Morley-Smith A, Patel K, Lyon A, Ahsan S, Akhtar M, Hadjivassilev S, Ang R, Finlay M, Dhinoja M, Earley M, Schilling R, Hunter R, Sporton S, Cutler M, Johnson J, Rowan S, Lewis W, Costantini O, Natale A, Ziv O. Moderated Posters 251Gap junction uncoupling during ischaemia activates normally quiescent purkinje-myocardial junctions resulting in accelerated and more complex activation patterns52The role of gαi2 signalling in cardiac electrophysiology53Midline atrial tachycardia: mapping and differentiation54A multicentre experience of percutaneous left atrial appendage occlusion using different technologies in the united kingdom55Opportunistic screening for atrial fibrillation during flu clinics56Primary care achievement of anticoagulation in atrial fibrillation: as assessed by the quality and outcomes framework57Is combined ablation for paroxysmal atrial fibrillation using balloon cryoablation and radiofrequency ablation superior to either technique alone? long-term follow up and cost analysis58Impact of voltage mapping to guide whether or not to perform ablation of the posterior wall in patient with persistent atrial fibrillation:. Europace 2016. [DOI: 10.1093/europace/euv328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
49
|
Al Salihi S, Jacobi E, Hunter R, Buja M. Multiple giant coronary artery aneurysms: a case report. Cardiovasc Pathol 2016; 25:203-207. [PMID: 26878103 DOI: 10.1016/j.carpath.2016.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2015] [Revised: 12/30/2015] [Accepted: 01/05/2016] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND Coronary artery aneurysm is defined as a localized area of dilatation exceeding the diameter of the adjacent normal arterial segment by 50%. Giant aneurysms are those aneurysms that measure greater than 2cm in diameter. There have been many pathologic diseases, including atherosclerosis, that have been implicated in the development of coronary artery aneurysms. MATERIALS AND METHODS We report a case of a 61-year-old African American male with multiple comorbidities including hypertension, congestive heart failure, abdominal aortic aneurysm, and bilateral iliac aneurysms, who was admitted to our hospital with exacerbation of congestive heart failure. Less than 2weeks after admission, the patient suffered cardiac arrest while receiving dialysis and was unresponsive to resuscitative measures. FINDINGS Autopsy was performed and revealed significant cardiomyopathy and giant coronary artery aneurysms involving the left anterior descending, left circumflex, and right coronary arteries. Both ventricles showed hypertrophy and dilation with multifocal areas of chronic myocardial scarring. CONCLUSIONS Coronary artery aneurysms and giant coronary artery aneurysms are an uncommon. As there are few reported cases in the literature, the cause, detection, and treatment of this disease are still largely unknown.
Collapse
Affiliation(s)
- S Al Salihi
- Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA.
| | - E Jacobi
- Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - R Hunter
- Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| | - M Buja
- Department of Pathology and Laboratory Medicine, The University of Texas Health Science Center at Houston, Houston, TX, USA
| |
Collapse
|
50
|
Nguyen N, Timotin E, Morgan D, Hunter R, Sur R. High Dose Rate Brachytherapy: An Effective Treatment for Lower Gastrointestinal Malignancies. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|