Search

Your search keyword '"Geoffrey R. Wong"' showing total 59 results
Start Over Author "Geoffrey R. Wong" Publisher elsevier bv
59 results on '"Geoffrey R. Wong"'

3. Polygenic risk scores are associated with atrial electrophysiologic substrate abnormalities and outcomes after atrial fibrillation catheter ablation

Author

Ahmed Al-Kaisey, Geoffrey R. Wong, Paul Young, David Chieng, Joshua Hawson, Robert Anderson, Hariharan Sugumar, Chrishan Nalliah, Mukund Prabhu, Renee Johnson, Magdalena Soka, Ingrid Tarr, Andrew Bakshi, Chenglong Yu, Paul Lacaze, Eleni Giannoulatou, Alex McLellan, Geoffrey Lee, Peter M. Kistler, Diane Fatkin, and Jonathan M. Kalman

Subjects
Physiology (medical), Cardiology and Cardiovascular Medicine
Published
2023
Full Text
View/download PDF

4. PO-455617-16 EFFECTS OF ADDING POSTERIOR WALL ISOLATION TO PULMONARY VEIN ISOLATION IN PERSISTENT ATRIAL FIBRILLATION AND HEART FAILURE WITH REDUCED EJECTION FRACTION (HFREF)

Author

David Chieng, Hariharan Sugumar, Liang-Han Ling, Louise Segan, Ahmed Al-Kaisey, Joshua Hawson, Sandeep Prabhu, Aleksandr Voskoboinik, Geoffrey R. Wong, Joseph B. Morton, Geoffrey Lee, Prashanthan Sanders, Jonathan M. Kalman, and Peter M. Kistler

Subjects
Physiology (medical), Cardiology and Cardiovascular Medicine
Published
2023
Full Text
View/download PDF

5. PO-05-225 OPEN WINDOW MAPPING: COMPARATIVE COHORT STUDY

Author

Ajay Sharma, Sophie Paddock, Fatima Bangash, Wei Lim, David J. Farwell, Richard Ang, Geoffrey R. Wong, Jason Garcia, Nikolaos Papageorgiou, Sophie Marshall, Rajdip S. Dulai, and Neil T. Srinivasan

Subjects
Physiology (medical), Cardiology and Cardiovascular Medicine
Published
2023
Full Text
View/download PDF

6. AB-452663-1 THE IMPACT OF LOW POSTERIOR LEFT ATRIAL WALL VOLTAGE ON THE OUTCOMES OF CATHETER ABLATION FOR PERSISTENT ATRIAL FIBRILLATION: A CAPLA RANDOMIZED CLINICAL TRIAL SUBSTUDY

Author

David Chieng, Hariharan Sugumar, Andrew Hunt, Liang-Han Ling, Louise Segan, Ahmed Al-Kaisey, Joshua Hawson, Sandeep Prabhu, Aleksandr Voskoboinik, Geoffrey R. Wong, Joseph B. Morton, Geoffrey Lee, Laurence D. Sterns, Prashanthan Sanders, Jonathan M. Kalman, and Peter M. Kistler

Subjects
Physiology (medical), Cardiology and Cardiovascular Medicine
Published
2023
Full Text
View/download PDF

7. Acute electrical, autonomic and structural effects of binge drinking: Insights into the ‘holiday heart syndrome’

Author

Jessica O'Brien, Jonathan M. Kalman, David Chieng, Geoffrey R. Wong, Phillip J. Ngu, Aleksandr Voskoboinik, Sarah Gutman, Conor McDonald, Andrew J. Taylor, H. Sugumar, and Peter M. Kistler

Subjects
Adult, medicine.medical_specialty, Premature atrial contraction, Binge drinking, 030204 cardiovascular system & hematology, Holiday heart syndrome, Ventricular Function, Left, Binge Drinking, 03 medical and health sciences, 0302 clinical medicine, Heart Rate, Internal medicine, Atrial Fibrillation, Heart rate, Humans, Medicine, Heart rate variability, 030212 general & internal medicine, Holidays, Ejection fraction, business.industry, Stroke Volume, Atrial fibrillation, Stroke volume, Middle Aged, medicine.disease, Cardiology, Cardiology and Cardiovascular Medicine, business
Abstract

BACKGROUND: Binge drinking is a common atrial fibrillation (AF) trigger, however the mechanisms are poorly understood. OBJECTIVE: To investigate the effects of alcohol intoxication and hangover with rhythm monitoring and cardiac MRI. METHODS: Patients underwent serial cardiac MRI pre- and post-binge with continuous Holter monitoring. Time periods analyzed: baseline (24 h pre-binge), consumption, hangover (0- 24 h post-consumption) and post-hangover (24-48 h post-consumption). RESULTS: 50 patients (age 49 ± 15 years, 40% paroxysmal AF) completed the study (intake 8.4 ± 3.1 standard drinks). Mean heart rate increased from 72 ± 10 to 80 ± 13 beats per minute (bpm) during consumption (p

Published
2021
Full Text
View/download PDF

8. AB-452643-4 EFFECTS OF ADDING POSTERIOR WALL ISOLATION TO PULMONARY VEIN ISOLATION IN PERSISTENT ATRIAL FIBRILLATION AND HEART FAILURE WITH REDUCED EJECTION FRACTION (HFREF)

Author

David Chieng, Hariharan Sugumar, Liang-Han Ling, Louise Segan, Ahmed Al-Kaisey, Joshua Hawson, Sandeep Prabhu, Aleksandr Voskoboinik, Geoffrey R. Wong, Joseph B. Morton, Geoffrey Lee, Prashanthan Sanders, Jonathan M. Kalman, and Peter M. Kistler

Subjects
Physiology (medical), Cardiology and Cardiovascular Medicine
Published
2023
Full Text
View/download PDF

9. Catheter Ablation Versus Medication in Atrial Fibrillation and Systolic Dysfunction

Author

Liang-Han Ling, Ramanathan Parameswaran, Sandeep Prabhu, Andrew J. Taylor, A. Al-Kaisey, Geoffrey R. Wong, David Chieng, Sonia Azzopardi, Aleksandr Voskoboinik, Robert M. Anderson, Ben Costello, E. Kotschet, Jonathan M. Kalman, Peter M. Kistler, and H. Sugumar

Subjects
medicine.medical_specialty, Ejection fraction, medicine.diagnostic_test, business.industry, medicine.medical_treatment, Cardiomyopathy, Atrial fibrillation, Magnetic resonance imaging, Catheter ablation, Stroke volume, 030204 cardiovascular system & hematology, medicine.disease, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, Heart failure, cardiovascular system, medicine, Cardiology, Sinus rhythm, cardiovascular diseases, 030212 general & internal medicine, business
Abstract

Objectives This study sought to determine the long-term outcomes of restoring sinus rhythm with catheter ablation (CA). Background The CAMERA-MRI (Catheter Ablation Versus Medical Rate Control in Atrial Fibrillation and Heart Failure—An MRI-Guided Multicenter Randomized Controlled Trial) study demonstrated that restoration of sinus rhythm with CA significantly improved left ventricular ejection fraction (LVEF) compared with medical rate control (MRC) at 6 months in persistent atrial fibrillation and otherwise unexplained systolic heart failure. However, the long-term outcomes have not been reported. Methods Patients enrolled in the CAMERA-MRI study were followed for 4 years with echocardiogram and cardiac magnetic resonance. CA involved pulmonary vein isolation and posterior left atrial wall isolation in 94%. Patients crossed over to CA after 6-month study duration. Arrhythmia burden was determined with implanted cardiac monitors or cardiac devices. Results Sixty-six patients (age 62 ± 10 years, atrial fibrillation duration of 22 ± 16 months, and LVEF 33 ± 9%) were randomized 1:1 to CA versus MRC. Eighteen of 33 patients crossed over from MRC group to CA group. At 4.0 ± 0.9 years, atrial fibrillation recurred in 27 patients (57%) in the CA group with a mean burden of 10.6 ± 21.2% after 1.4 ± 0.6 procedures. There was an absolute increase in LVEF with CA of 16.4 ± 13.3% compared with 8.6 ± 7.6% in MRC (p = 0.001). In the CA group, the absence of ventricular late gadolinium enhancement was associated with a greater improvement in absolute LVEF (19 ± 13% vs. 10 ± 11% in the late gadolinium enhancement–positive group; p = 0.04) and LVEF normalization in 19 patients (58%) versus 4 patients (18%) in the late gadolinium enhancement–positive group (p = 0.008) at 4.0 ± 0.9 years follow-up. Conclusions CA is superior to MRC in improving LVEF in the long term in patients with atrial fibrillation and systolic heart failure. The greatest recovery in systolic function was demonstrated in the absence of ventricular fibrosis on cardiac magnetic resonance.

Published
2020
Full Text
View/download PDF

10. Arrhythmia recurrence is more common in females undergoing multiple catheter ablation procedures for persistent atrial fibrillation: Time to close the gender gap

Author

Aleksandr Voskoboinik, Shane Nanayakkara, Chrishan J. Nalliah, Ramanathan Parameswaran, A. Al-Kaisey, Jonathan M. Kalman, Liang-Han Ling, Sandeep Prabhu, Geoffrey Lee, David Chieng, Peter M. Kistler, Sonia Azzopardi, Robert D. Anderson, Alex J.A. McLellan, Geoffrey R. Wong, Hariharan Sugumar, and Joseph B. Morton

Subjects
Male, medicine.medical_specialty, Time Factors, Heart disease, medicine.medical_treatment, Catheter ablation, 030204 cardiovascular system & hematology, Pulmonary vein, 03 medical and health sciences, Sex Factors, 0302 clinical medicine, Recurrence, Physiology (medical), Internal medicine, Atrial Fibrillation, Humans, Medicine, 030212 general & internal medicine, Sex Distribution, business.industry, Incidence, Incidence (epidemiology), Hazard ratio, Australia, Atrial fibrillation, Middle Aged, medicine.disease, Ablation, Treatment Outcome, Pulmonary Veins, Heart failure, Catheter Ablation, Cardiology, Female, Cardiology and Cardiovascular Medicine, business, Follow-Up Studies
Abstract

Background Female gender is associated with an increased recurrence of atrial fibrillation (AF) after catheter ablation (CA). Although AF is more common in men, women constitute a significant proportion with persistent atrial fibrillation (PsAF). Objective The purpose of this study was to determine whether multiple ablation procedures improves arrhythmia outcomes in females with PsAF compared to men. Methods We performed a multicenter observational study to determine long-term arrhythmia outcomes in patients undergoing >1 CA for PsAF. CA involved pulmonary vein (PV) isolation with additional ablation including linear, posterior wall isolation, electrogram-guided, or a combination of these. Results A total of 281 patients had >1 ablation procedure for PsAF and were included in this analysis (mean age 58.7 ± 9.3 years; 86 [30.6%] female; left atrial [LA] area 27.0 ± 5.3 cm2; PsAF duration 1.7 ± 1.7 years). At mean follow-up of 45.5 ± 31.8 months, freedom from recurrent AF was present in 148 patients(52.7%) after 2.2 ± 0.5 procedures. After multivariate analysis, female gender (hazard ratio [HR] 2.10; P Conclusion Female gender was independently and strongly associated with arrhythmia recurrence in patients undergoing multiple procedures for PsAF. PV reconnection was less likely, and fewer reconnected PVs occurred in women. Further studies are required to better understand the mechanisms responsible for AF in females to assist in closing the gender gap in the success of CA.

Published
2020
Full Text
View/download PDF

11. Dynamic Atrial Substrate During High-Density Mapping of Paroxysmal and Persistent AF

Author

Liang-Han Ling, H. Sugumar, Sandeep Prabhu, Geoffrey Lee, Chrishan J. Nalliah, Ramanathan Parameswaran, Peter M. Kistler, Prashanthan Sanders, Jonathan M. Kalman, Aleksandr Voskoboinik, Joseph B. Morton, Alex J.A. McLellan, Robert D. Anderson, and Geoffrey R. Wong

Subjects
Fibrillation, medicine.medical_specialty, business.industry, medicine.medical_treatment, Atrial fibrillation, Catheter ablation, 030204 cardiovascular system & hematology, medicine.disease, Ablation, Pulmonary vein, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, Cardiology, Sinus rhythm, 030212 general & internal medicine, Electrical conduction system of the heart, medicine.symptom, business, Coronary sinus
Abstract

Objectives This study sought to determine the impact of rate and direction on left atrial (LA) substrate. Background The extent to which substrate mapped in sinus rhythm varies according to cycle length and direction of wave front propagation is unknown. Methods A total of 73 consecutive patients with atrial fibrillation (AF) underwent electroanatomic LA mapping before pulmonary vein isolation using multipolar catheter during distal coronary sinus (CS) pacing at 600 ms and 300 ms. Additional maps were created during left superior pulmonary vein pacing at 300 ms. Bipolar voltage, conduction velocity (CV), and complex signals were determined. Results Mean age was 61 ± 9 years, 67% were men, and 53% had persistent AF. Global mean voltage was lower with CS pacing at 300 ms compared with 600 ms (1.56 ± 0.47 mV vs. 1.74 ± 0.48 mV; p Conclusions In patients with AF, variation in cycle length and direction of wave front activation produce both generalized and regional changes in voltage, CV, and complex fractionation, resulting in significant changes in substrate maps. This study highlights the potential limitations of static low-voltage maps to identify the AF ablation target zone.

Published
2019
Full Text
View/download PDF

12. Atrial Remodeling Following Catheter Ablation for Atrial Fibrillation-Mediated Cardiomyopathy

Author

Liang-Han Ling, Sandeep Prabhu, Peter M. Kistler, Alex J.A. McLellan, Aleksandr Voskoboinik, Geoffrey R. Wong, Sarah J. Gutman, Shane Young, Andrew J. Taylor, H. Sugumar, Chrishan J. Nalliah, Ramanathan Parameswaran, G. Lee, and Jonathan M. Kalman

Subjects
Tachycardia, medicine.medical_specialty, medicine.diagnostic_test, Heart disease, business.industry, medicine.medical_treatment, Cardiomyopathy, Atrial fibrillation, Magnetic resonance imaging, Catheter ablation, Stroke volume, 030204 cardiovascular system & hematology, medicine.disease, 03 medical and health sciences, 0302 clinical medicine, Internal medicine, medicine, Cardiology, sense organs, 030212 general & internal medicine, medicine.symptom, Electrical conduction system of the heart, business
Abstract

Objectives: This study sought to determine the long-term right atrial (RA) electrical and structural changes in a subgroup from the CAMERA-MRI (Catheter Ablation Versus Medical Rate Control...

Published
2019
Full Text
View/download PDF

13. Moderate alcohol consumption is associated with atrial electrical and structural changes: Insights from high-density left atrial electroanatomic mapping

Author

Sandeep Prabhu, Peter M. Kistler, G. Lee, H. Sugumar, Alex J.A. McLellan, Jonathan M. Kalman, Chrishan J. Nalliah, Aleksandr Voskoboinik, Liang-Han Ling, J. Hawson, Joseph B. Morton, and Geoffrey R. Wong

Subjects
Fibrillation, education.field_of_study, medicine.medical_specialty, business.industry, medicine.medical_treatment, Population, Catheter ablation, Atrial fibrillation, 030204 cardiovascular system & hematology, medicine.disease, Nerve conduction velocity, 03 medical and health sciences, 0302 clinical medicine, Physiology (medical), Internal medicine, medicine, Cardiology, 030212 general & internal medicine, Risk factor, medicine.symptom, Electrical conduction system of the heart, Cardiology and Cardiovascular Medicine, education, business, Stroke
Abstract

Background Regular alcohol intake is an important modifiable risk factor associated with atrial fibrillation (AF) and left atrial (LA) dilation. Objective The purpose of this study was to determine the impact of different degrees of alcohol consumption on atrial remodeling using high-density electroanatomic mapping. Methods We enrolled 75 patients before AF ablation to undergo high-density LA mapping (CARTO, Biosense Webster) using a multipolar catheter. The Confidense algorithm was used to create maps during distal coronary sinus pacing at 600 ms. Bipolar voltage and complex atrial activity were assessed, and isochronal activation maps were created to determine global conduction velocity (CV). Patients were classified as lifelong nondrinkers, mild drinkers (2–7 drinks/week), or moderate drinkers (8–21 drinks/week). Results High-density electroanatomic mapping (mean 1016 ± 445 points per patient) was performed on 25 lifelong nondrinkers, 25 mild drinkers (4.4 ± 2.3 drinks/week), and 25 moderate drinkers (14.0 ± 4.2 drinks/week). Moderate drinkers had significantly lower mean global bipolar voltages (1.53 ± 0.62 mV vs 1.89 ± 0.45 mV; P = .02), slower CV (33.5 ± 14.4 cm/s vs 41.7 ± 12.1 cm/s; P = .04), and a higher proportion of complex atrial potentials (7.8% ± 4.7% vs 4.5% ± 2.7%; P = .004) compared to nondrinkers. Global voltage and CV did not differ significantly in mild drinkers, but there was a significant increase in global complex potentials (6.6% ± 4.6%; P = .04) and regional low-voltage zones ( Conclusion Regular moderate alcohol consumption, but not mild consumption, is an important modifiable risk factor for AF associated with lower atrial voltage and conduction slowing. These electrical and structural changes may explain the propensity to AF in regular drinkers.

Published
2019
Full Text
View/download PDF

14. 228 Long Term Outcomes after Catheter Ablation of Atrial Fibrillation in the Elderly: A Systematic Review and Meta-Analysis

Author

A. Voskoboinik, M. Ang, A. Rodriguez, Daniel J. Scherer, Geoffrey R. Wong, Dennis T.L. Wong, and C. Nalliah

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Atrial fibrillation, Catheter ablation, medicine.disease, Internal medicine, Meta-analysis, medicine, Cardiology, Long term outcomes, Cardiology and Cardiovascular Medicine, business
Published
2020
Full Text
View/download PDF

15. 255 Sinus Node Remodelling in Atrial Fibrillation: Insights from High Density Mapping

Author

Robert M. Anderson, Alex Voskoboinik, Geoffrey R. Wong, Alex J.A. McLellan, G. Lee, Liang-Han Ling, P. Kistler, P. Sanders, H. Sugumar, J. Kalman, Chrishan J. Nalliah, Ramanathan Parameswaran, Sandeep Prabhu, A. Al-Kaisey, and Gwilym M. Morris

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Node (networking), High density, Atrial fibrillation, medicine.disease, medicine.anatomical_structure, Internal medicine, Cardiology, Medicine, Cardiology and Cardiovascular Medicine, business, Sinus (anatomy)
Published
2020
Full Text
View/download PDF

16. 029 Gender Differences in Atrial Remodelling in Atrial Fibrillation: Relationship to Ablation Outcomes

Author

P. Sanders, Chrishan J. Nalliah, Ramanathan Parameswaran, Sandeep Prabhu, Alex J.A. McLellan, A. Al-Kaisey, Alex Voskoboinik, Liang-Han Ling, Geoffrey R. Wong, Robert M. Anderson, G. Lee, J. Kalman, H. Sugumar, and P. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, medicine.medical_treatment, Cardiology, medicine, Atrial fibrillation, Cardiology and Cardiovascular Medicine, medicine.disease, business, Ablation
Published
2020
Full Text
View/download PDF

17. 005 Impact of Continuous Positive Airway Pressure on the Atrial Substrate in Patients With Obstructive Sleep Apnoea and Atrial Fibrillation: The SLEEP-AF Substrate Sub-Study

Author

K. Kee, Dominik Linz, Sandeep Prabhu, S. Joseph, R. Parameswaren, Geoffrey R. Wong, J. Kalman, Joseph B. Morton, Alex Voskoboinik, G. Lee, H. Ling, Chrishan J. Nalliah, Alex J.A. McLellan, H. Sugumar, J. Goldin, Troy Watts, P. Sanders, and P. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Substrate (chemistry), Atrial fibrillation, medicine.disease, Sleep in non-human animals, Internal medicine, medicine, Cardiology, In patient, Continuous positive airway pressure, Cardiology and Cardiovascular Medicine, business, Atrial substrate
Published
2020
Full Text
View/download PDF

18. Initial and Extended Use of Femoral Versus Nonfemoral Double-Lumen Vascular Catheters and Catheter-Related Infection During Continuous Renal Replacement Therapy

Author

Norelle L Sherry, Cauê de Araujo Matte, Geoffrey R Wong, Miklos Lipcsey, Allison L Collins, Horng-Ruey Chua, Antoine G. Schneider, Matthew J Chan, Nadiah Lotfy, Jonathan Galtieri, Mercedes Garcia-Alvarez, and Rinaldo Bellomo

Subjects
Male, medicine.medical_specialty, Time Factors, Vascular catheter, medicine.medical_treatment, Lumen (anatomy), law.invention, Cohort Studies, law, Intensive care, medicine, Central Venous Catheters, Humans, Renal replacement therapy, Aged, Retrospective Studies, Venipuncture, business.industry, Femoral Vein, Middle Aged, medicine.disease, Intensive care unit, Surgery, Renal Replacement Therapy, Nephrology, Catheter-Related Infections, Bacteremia, Anesthesia, Female, business, Cohort study
Abstract

The risk of catheter-related infection or bacteremia, with initial and extended use of femoral versus nonfemoral sites for double-lumen vascular catheters (DLVCs) during continuous renal replacement therapy (CRRT), is unclear.Retrospective observational cohort study.Critically ill patients on CRRT in a combined intensive care unit of a tertiary institution.Femoral versus nonfemoral venous DLVC placement.Catheter-related colonization (CRCOL) and bloodstream infection (CRBSI).CRCOL/CRBSI rates expressed per 1,000 catheter-days.We studied 458 patients (median age, 65 years; 60% males) and 647 DLVCs. Of 405 single-site only DLVC users, 82% versus 18% received exclusively 419 femoral versus 82 jugular or subclavian DLVCs, respectively. The corresponding DLVC indwelling duration was 6±4 versus 7±5 days (P=0.03). Corresponding CRCOL and CRBSI rates (per 1,000 catheter-days) were 9.7 versus 8.8 events (P=0.8) and 1.2 versus 3.5 events (P=0.3), respectively. Overall, 96 patients with extended CRRT received femoral-site insertion first with subsequent site change, including 53 femoral guidewire exchanges, 53 new femoral venipunctures, and 47 new jugular/subclavian sites. CRCOL and CRBSI rates were similar for all such approaches (P=0.7 and P=0.9, respectively). On multivariate analysis, CRCOL risk was higher in patients older than 65 years and weighing90kg (ORs of 2.1 and 2.2, respectively; P0.05). This association between higher weight and greater CRCOL risk was significant for femoral DLVCs, but not for nonfemoral sites. Other covariates, including initial or specific DLVC site, guidewire exchange versus new venipuncture, and primary versus secondary DLVC placement, did not significantly affect CRCOL rates.Nonrandomized retrospective design and single-center evaluation.CRCOL and CRBSI rates in patients on CRRT are low and not influenced significantly by initial or serial femoral catheterizations with guidewire exchange or new venipuncture. CRCOL risk is higher in older and heavier patients, the latter especially so with femoral sites.

Published
2014
Full Text
View/download PDF

19. The Crista Terminalis: A Site of Localised Re-Entry in Persistent Atrial Fibrillation

Author

G. Lee, P. Sanders, Joseph B. Morton, Alex J.A. McLellan, Alex Voskoboinik, Sandeep Prabhu, S. Joseph, Geoffrey R. Wong, J. Kalman, Chrishan J. Nalliah, Ramanathan Parameswaran, P. Kistler, H. Ling, and B. Pathik

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, medicine.anatomical_structure, business.industry, Internal medicine, Re entry, Persistent atrial fibrillation, Cardiology, Medicine, Cardiology and Cardiovascular Medicine, business, Crista terminalis
Published
2018
Full Text
View/download PDF

20. Greater Regional Left Atrial Complex Fractionated Potentials in Obese Patients with Atrial Fibrillation

Author

H. Sugumar, P. Sanders, Chrishan J. Nalliah, Ramanathan Parameswaran, Robert M. Anderson, J. Kalman, P. Kistler, Joseph B. Morton, Alex Voskoboinik, B. Pathik, Liang-Han Ling, Geoffrey R. Wong, Sandeep Prabhu, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Left atrial, business.industry, Internal medicine, medicine, Cardiology, Atrial fibrillation, Cardiology and Cardiovascular Medicine, medicine.disease, business
Published
2018
Full Text
View/download PDF

21. Differentiating Right- and Left-Sided Outflow Tract Ventricular Arrhythmias – A Review of 'Classical' ECG Signatures and Prediction Algorithms

Author

Robert M. Anderson, P. Kistler, Paul B. Sparks, Joseph B. Morton, Alex Voskoboinik, Alex J.A. McLellan, J. Kalman, Geoffrey R. Wong, H. Sugumar, Troy Watts, Ramanathan Parameswaran, Saurabh Kumar, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, Prediction algorithms, medicine.medical_specialty, business.industry, Internal medicine, Cardiology, Medicine, Outflow, Cardiology and Cardiovascular Medicine, business, Left sided
Published
2019
Full Text
View/download PDF

22. Alcohol Abstinence in Moderate Drinkers with Atrial Fibrillation: Results from the Alcohol-AF Randomised Controlled Trial

Author

Alex Voskoboinik, E. Kotschet, Geoffrey R. Wong, Andrew J. Taylor, Peter M. Kistler, Dion Stub, David M. Kaye, Jonathan M. Kalman, Shane Nanayakkara, H. Sugumar, T. Nicholls, Michael C.G. Wong, Chrishan J. Nalliah, and Sandeep Prabhu

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Atrial fibrillation, Alcohol, medicine.disease, law.invention, chemistry.chemical_compound, chemistry, Randomized controlled trial, law, Internal medicine, medicine, Cardiology and Cardiovascular Medicine, business, Alcohol Abstinence
Published
2019
Full Text
View/download PDF

24. High Density Mapping of the Crista Terminalis Demonstrates Transient Block and Rotational Activity: Implications for Persistent Atrial Fibrillation

Author

Marco Larobina, John Goldblatt, M. O’Keefe, Chrishan J. Nalliah, Ramanathan Parameswaran, Joseph B. Morton, Alex Voskoboinik, Alex J.A. McLellan, J. Kalman, Alistair Royse, Troy Watts, H. Ling, Geoffrey R. Wong, H. Sukumar, P. Kistler, P. Sanders, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, High density, medicine.anatomical_structure, Block (telecommunications), Internal medicine, Persistent atrial fibrillation, medicine, Cardiology, Transient (computer programming), Cardiology and Cardiovascular Medicine, Crista terminalis, business
Published
2019
Full Text
View/download PDF

25. Genetic Susceptibility to Atrial Fibrillation at the chr 4q25 Locus is Associated with Left Atrial Electrical Remodelling

Author

Liang-Han Ling, Robert M. Anderson, Alex J.A. McLellan, H. Sugumar, Sandeep Prabhu, Geoffrey R. Wong, J. Kalman, Diane Fatkin, Chrishan J. Nalliah, Ramanathan Parameswaran, Joseph B. Morton, Alex Voskoboinik, P. Kistler, G. Lee, and Renee Johnson

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Left atrial, Internal medicine, medicine, Cardiology, Genetic predisposition, Atrial fibrillation, Locus (genetics), Cardiology and Cardiovascular Medicine, medicine.disease, business
Published
2019
Full Text
View/download PDF

27. Systolic Heart Failure is Associated with More Advanced Bi-Atrial Substrate Independent of AF Duration in Persistent AF

Author

K. Peck, Sonia Azzopardi, Chrishan J. Nalliah, Alex Voskoboinik, G. Lee, B. Pathik, Alex J.A. McLellan, Andrew J. Taylor, Geoffrey R. Wong, Justin A. Mariani, P. Kistler, Sandeep Prabhu, Liang-Han Ling, and J. Kalman

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Duration (music), business.industry, Internal medicine, Heart failure, medicine, Cardiology, Cardiology and Cardiovascular Medicine, Atrial substrate, business, medicine.disease
Published
2017
Full Text
View/download PDF

29. Gender-Based Differences in High-Density Electroanatomic Mapping: More Advanced Atrial Remodelling in Females with Atrial Fibrillation

Author

Robert M. Anderson, Liang-Han Ling, Geoffrey R. Wong, P. Kistler, Sandeep Prabhu, G. Lee, J. Kalman, Chrishan J. Nalliah, Ramanathan Parameswaran, H. Sugumar, B. Pathik, Joseph B. Morton, and Alex Voskoboinik

Subjects
Pulmonary and Respiratory Medicine, Electroanatomic mapping, medicine.medical_specialty, business.industry, Internal medicine, Cardiology, Medicine, High density, Atrial fibrillation, Cardiology and Cardiovascular Medicine, business, medicine.disease
Published
2018
Full Text
View/download PDF

30. Prevalence of Obstructive Sleep Aponea in Atrial Fibrillation Ablation Patients: Relationship with the Atrial Fibrillation Phenotype

Author

S. Joseph, J. Goldin, D. Wirth, Alex J.A. McLellan, G. Lee, P. Kistler, P. Sanders, B. Pathik, Chrishan J. Nalliah, J. Kalman, Joseph B. Morton, Alex Voskoboinik, H. Ling, K. Kee, Sandeep Prabhu, and Geoffrey R. Wong

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Atrial fibrillation, Ablation, medicine.disease, Phenotype, Sleep in non-human animals, Internal medicine, Cardiology, medicine, Cardiology and Cardiovascular Medicine, business
Published
2018
Full Text
View/download PDF

31. Incremental Pacing Identifies Target Atrial Substrate in Paroxysmal and Persistent Atrial Fibrillation

Author

Chrishan J. Nalliah, Ramanathan Parameswaran, P. Kistler, J. Kalman, Geoffrey R. Wong, B. Pathik, Robert M. Anderson, Joseph B. Morton, Alex Voskoboinik, Sandeep Prabhu, G. Lee, Liang-Han Ling, and H. Sugumar

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, Persistent atrial fibrillation, Cardiology, Medicine, Cardiology and Cardiovascular Medicine, business, Atrial substrate
Published
2018
Full Text
View/download PDF

32. Hand-Held Paddles More Effective than Adhesive Patches for Cardioversion of Atrial Fibrillation in Obese Patients: Results from the DCR-BMI Multicenter Randomised Controlled Trial

Author

J. Moskovitch, Michael C.G. Wong, G. Plunkett, Liang-Han Ling, Samer Noaman, Andrew J. Taylor, Sandeep Prabhu, Jason Bloom, Alex Voskoboinik, Himawan Fernando, H. Sugumar, C. Goh, J. Kalman, Alex J.A. McLellan, Geoffrey R. Wong, Chrishan J. Nalliah, Ramanathan Parameswaran, and P. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Hand held, Atrial fibrillation, medicine.disease, Cardioversion, law.invention, Surgery, Randomized controlled trial, law, medicine, Cardiology and Cardiovascular Medicine, business
Published
2018
Full Text
View/download PDF

33. High-Density Mapping of the Substrate for Atrial Fibrillation in Obstructive Sleep Apnoea: Relationship with Atrial Fibrillation Phenotype

Author

P. Kistler, Chrishan J. Nalliah, Ramanathan Parameswaran, G. Lee, Geoffrey R. Wong, P. Sanders, K. Kee, Alex J.A. McLellan, D. Wirth, J. Goldin, Joseph B. Morton, Alex Voskoboinik, Sandeep Prabhu, J. Kalman, H. Ling, and B. Pathik

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, High density, Substrate (chemistry), Atrial fibrillation, medicine.disease, Phenotype, Sleep in non-human animals, Internal medicine, medicine, Cardiology, Cardiology and Cardiovascular Medicine, business
Published
2018
Full Text
View/download PDF

34. Mild-to-Moderate Alcohol Consumption Is Associated with a Reduction in Ventricular Fibrosis: Insights from T1 Mapping Using Cardiac Magnetic Resonance Imaging

Author

A. La Gerche, Sandeep Prabhu, Michael D. Flannery, J. Kalman, Chrishan J. Nalliah, Ramanathan Parameswaran, Benedict T. Costello, H. Sugumar, Geoffrey R. Wong, Andrew J. Taylor, J. William, Alex Voskoboinik, and P. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, medicine.diagnostic_test, business.industry, medicine.medical_treatment, Ventricular fibrosis, Cardiac magnetic resonance imaging, Internal medicine, medicine, Cardiology, Cardiology and Cardiovascular Medicine, business, Alcohol consumption, Reduction (orthopedic surgery)
Published
2018
Full Text
View/download PDF

35. High-Density Mapping of the Substrate for Atrial Fibrillation in Obstructive Sleep Apnoea: Implications for the Crista Terminalis and Posterior Right Atrium

Author

J. Kalman, Alex J.A. McLellan, G. Lee, P. Sanders, Joseph B. Morton, Geoffrey R. Wong, Alex Voskoboinik, K. Kee, Chrishan J. Nalliah, Ramanathan Parameswaran, B. Pathik, H. Ling, P. Kistler, S. Joseph, D. Wirth, J. Goldin, and Sandeep Prabhu

Subjects
Pulmonary and Respiratory Medicine, Posterior right, medicine.medical_specialty, business.industry, High density, Atrial fibrillation, medicine.disease, medicine.anatomical_structure, Internal medicine, Cardiology, Medicine, Atrium (heart), Cardiology and Cardiovascular Medicine, business, Crista terminalis
Published
2018
Full Text
View/download PDF

37. Percutaneous Pericardiocentesis: A Contemporary Tertiary Hospital Experience

Author

Geoffrey R. Wong, P. Steele, R.A.S. Yeend, Anthony D. Pisaniello, Kurt C. Roberts-Thomson, S. Parvar, Daniel J. Scherer, Adam J. Nelson, Mitra Shirazi, Matthew I. Worthley, and Ross L. Roberts-Thomson

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Percutaneous, business.industry, Pericardiocentesis, medicine.medical_treatment, General surgery, Emergency medicine, medicine, Cardiology and Cardiovascular Medicine, business, Hospital experience
Published
2016
Full Text
View/download PDF

38. Unmasking of Sick Sinus Syndrome Using Flecainide in a Patient with SCN5a Mutation and Overlap Syndrome

Author

Geoffrey R. Wong, Kurt C. Roberts-Thomson, S. Parvar, Glenn D. Young, Ross L. Roberts-Thomson, P. Sanders, and Adam J. Nelson

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, Scn5a gene, business.industry, Overlap syndrome, medicine.disease, Sick sinus syndrome, Internal medicine, Cardiology, medicine, Cardiology and Cardiovascular Medicine, business, Flecainide, medicine.drug
Published
2016
Full Text
View/download PDF

39. Ventricular Fibrosis Improves Following AF Ablation in Patients with Persistent AF and Heart Failure

Author

Andrew J. Taylor, Sonia Azzopardi, Benedict T. Costello, Liang-Han Ling, B. Pathik, K. Peck, J. Kalman, Sarah J. Gutman, Alex J.A. McLellan, P. Kistler, Sandeep Prabhu, Alex Voskoboinik, Geoffrey R. Wong, Justin A. Mariani, Chrishan J. Nalliah, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, Heart failure, medicine, Cardiology, In patient, Cardiology and Cardiovascular Medicine, business, medicine.disease, Af ablation, Ventricular fibrosis
Published
2017
Full Text
View/download PDF

40. Obstructive Sleep Apnoea in Patients Having Atrial Fibrillation Ablation: Prevalence, Severity and Association with Arrhythmia Phenotype

Author

Geoffrey R. Wong, Joseph B. Morton, D. Wirth, Alex Voskoboinik, P. Sanders, Sandeep Prabhu, G. Lee, H. Ling, Chrishan J. Nalliah, B. Pathik, J. Goldin, S. Joseph, K. Kee, J. Kalman, and P. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Atrial fibrillation, Ablation, medicine.disease, Sleep in non-human animals, Phenotype, Internal medicine, Cardiology, Medicine, In patient, Cardiology and Cardiovascular Medicine, business
Published
2017
Full Text
View/download PDF

41. High Density Mapping of Atrial Fibrillation: Regional Atrial Substrate Abnormalities and Implications for Substrate Ablation

Author

Sandeep Prabhu, Geoffrey R. Wong, J. Kalman, B. Pathik, Chrishan J. Nalliah, P. Kistler, Joseph B. Morton, Alex Voskoboinik, Liang-Han Ling, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, High density, Substrate (chemistry), Atrial fibrillation, Ablation, medicine.disease, Internal medicine, medicine, Cardiology, Cardiology and Cardiovascular Medicine, Atrial substrate, business, Biomedical engineering
Published
2017
Full Text
View/download PDF

42. Modest Alcohol Consumption is Associated with Atrial Myopathy: A Prospective MRI-Based Study

Author

Alex Voskoboinik, Chrishan J. Nalliah, Benedict T. Costello, E. Kalman, Sandeep Prabhu, Fabian Springer, A. La Gerche, Andrew J. Taylor, P. Kistler, and Geoffrey R. Wong

Subjects
Pulmonary and Respiratory Medicine, Pediatrics, medicine.medical_specialty, business.industry, medicine, Physical therapy, medicine.symptom, Cardiology and Cardiovascular Medicine, Myopathy, business, Alcohol consumption
Published
2017
Full Text
View/download PDF

43. Low Rates of Major Complications for Atrial Fibrillation Ablation Over Time Using Radiofrequency Energy: A 13-Year Single Centre Experience of 2,600 Cases

Author

Paul B. Sparks, Chrishan J. Nalliah, J. Kalman, Joseph B. Morton, Alex Voskoboinik, P. Kistler, Sandeep Prabhu, S. Joseph, Andrew J. Taylor, Geoffrey R. Wong, J. Hawson, and G. Lee

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, medicine.medical_treatment, Atrial fibrillation, medicine.disease, Ablation, Surgery, Single centre, medicine, Major complication, Cardiology and Cardiovascular Medicine, business, Radiofrequency energy
Published
2017
Full Text
View/download PDF

44. Ultra High Density Mapping Reveals Regional Conduction Slowing in Obstructive Sleep Apnoea

Author

Sandeep Prabhu, A. Voscoboinik, G. Lee, Geoffrey R. Wong, J. Kalman, H. Ling, B. Pathil, K. Kee, Joseph B. Morton, J. Goldin, P. Sanders, P. Kistler, Chrishan J. Nalliah, S. Joseph, and D. Wirth

Subjects
Pulmonary and Respiratory Medicine, Ultra high density, medicine.medical_specialty, business.industry, Internal medicine, Cardiology, Medicine, Cardiology and Cardiovascular Medicine, Thermal conduction, business, Sleep in non-human animals
Published
2017
Full Text
View/download PDF

45. Rapid Pulmonary Vein Firing Does Not Predict AF Ablation Outcome in Persistent AF

Author

Alex Voskoboinik, B. Pathik, K. Peck, Andrew J. Taylor, Liang-Han Ling, Manish Kalla, Chrishan J. Nalliah, J. Kalman, Geoffrey R. Wong, Alex J.A. McLellan, Sandeep Prabhu, Sonia Azzopardi, G. Lee, Justin A. Mariani, and Peter M. Kistler

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, medicine, Cardiology, Cardiology and Cardiovascular Medicine, business, Af ablation, Pulmonary vein
Published
2017
Full Text
View/download PDF

46. A Comparison of the Electrophysiologic and Electroanatomic Characteristics Between the Right and Left Atrium in Persistent Atrial Fibrillation: Is the Right Atrium a Window into the Left?

Author

Geoffrey R. Wong, Liang-Han Ling, Justin A. Mariani, Alex Voskoboinik, Sonia Azzopardi, Peter M. Kistler, Andrew J. Taylor, Chrishan J. Nalliah, Sandeep Prabhu, Geoffrey Lee, Alex J.A. McLellan, Jonathan M. Kalman, and K. Peck

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, medicine.anatomical_structure, business.industry, Internal medicine, Persistent atrial fibrillation, Left atrium, medicine, Cardiology, Window (computing), Right atrium, Cardiology and Cardiovascular Medicine, business
Published
2017
Full Text
View/download PDF

47. Pulmonary Vein Activity in Systolic Heart Failure and Persistent Atrial Fibrillation

Author

J. Kalman, P. Kistler, B. Pathik, Liang-Han Ling, G. Lee, Alex J.A. McLellan, K. Peck, Sandeep Prabhu, Chrishan J. Nalliah, Geoffrey R. Wong, Justin A. Mariani, Alex Voskoboinik, and Andrew J. Taylor

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, Heart failure, Persistent atrial fibrillation, P wave, medicine, Cardiology, Cardiology and Cardiovascular Medicine, medicine.disease, business, Pulmonary vein
Published
2017
Full Text
View/download PDF

48. Novel use of sildenafil in the management of pulmonary hypertension due to post-catheter ablation ‘stiff left atrial syndrome’

Author

Dennis H. Lau, P. Steele, Melissa E. Middeldorp, Prashanthan Sanders, Geoffrey R. Wong, and Timothy J. Baillie

Subjects
medicine.medical_specialty, business.industry, Sildenafil, medicine.medical_treatment, Left atrium, Atrial fibrillation, Catheter ablation, medicine.disease, Pulmonary hypertension, chemistry.chemical_compound, medicine.anatomical_structure, chemistry, Left atrial, Internal medicine, medicine, Cardiology, Mean right atrial pressure, Cardiology and Cardiovascular Medicine, business
Published
2015
Full Text
View/download PDF

49. MR conditional pacemaker - An initial CMR experience

Author

Stephen G. Worthley, Daniel J. Scherer, Geoffrey R. Wong, Glenn D. Young, Adam J. Nelson, Ross L. Roberts-Thomson, Kerry Williams, S. Parvar, Karen Teo, Prashanthan Sanders, Adil Rajwani, and Michael A. Brown

Subjects
Pulmonary and Respiratory Medicine, medicine.medical_specialty, business.industry, Internal medicine, medicine, Cardiology, Cardiology and Cardiovascular Medicine, business, Mr conditional
Published
2015
Full Text
View/download PDF

50. A Comparison of Projected Generator Life Expectancy of Contemporary Cardiac Pacemakers and the Impact of Advanced Pacing Features

Author

Dennis H. Lau, D. Chapman, Dian Andina Munawar, Saurabh Kumar, P. Sanders, Melissa E. Middeldorp, Darragh Twomey, Geoffrey R. Wong, and Rajiv Mahajan

Subjects
Pulmonary and Respiratory Medicine, Generator (computer programming), business.industry, Electrical engineering, Life expectancy, Medicine, Cardiology and Cardiovascular Medicine, business
Published
2016
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results