Full Text Journal Articles by
Author Christopher C Cheung

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Iatrogenic Atrioventricular Block.

Christopher C Cheung, Shumpei Mori, Edward P Gerstenfeld,

Iatrogenic atrioventricular (AV) block can occur in the context of cardiac surgery, percutaneous transcatheter, or electrophysiologic procedures. In cardiac surgery, patients undergoing aortic and/or mitral valve surgery are at the highest risk for developing perioperative AV block requiring permanent pacemaker implantation. Similarly, patients undergoing transcatheter aortic valve replacement are also ... Read more >>

Card Electrophysiol Clin (Cardiac electrophysiology clinics)
[2021, 13(4):711-720]

Cited: 0 times

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Beware of the hazards: limitations of the proportional hazards assumption.

Christopher C Cheung, Eric Vittinghoff, Gregory M Marcus, Edward P Gerstenfeld,

Europace (Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology)
[2021, :]

Cited: 0 times

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Process of Care and a Practical Toolkit for Evaluating and Managing Arrhythmic Risk in the Cardiogenetic Pregnant Patient.

Christopher C Cheung, Thomas Roston, Brianna Davies, Jasmine Grewal, Zachary W Laksman, Andrew D Krahn,

Patients with inherited arrhythmia syndromes (IASs) and inherited cardiomyopathies (ICs) are periodically encountered in both general and specialist practices. These syndromes include long QT syndrome, catecholaminergic polymorphic ventricular tachycardia, Brugada syndrome, early repolarisation syndrome, and hypertrophic and arrhythmogenic cardiomyopathies. In general, the presence of an IAS or IC is not ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2021, :]

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Effect of Continuous Electrocardiogram Monitoring on Detection of Undiagnosed Atrial Fibrillation After Hospitalization for Cardiac Surgery: A Randomized Clinical Trial.

Andrew C T Ha, Subodh Verma, C David Mazer, Adrian Quan, Bobby Yanagawa, David A Latter, Terrence M Yau, Frédéric Jacques, Craig D Brown, Rohit K Singal, Michael H Yamashita, Tarit Saha, Kevin H Teoh, Buu-Khanh Lam, Marc W Deyell, Marnee Wilson, Makoto Hibino, Christopher C Cheung, Andrew Kosmopoulos, Vinay Garg, Shira Brodutch, Hwee Teoh, Fei Zuo, Kevin E Thorpe, Peter Jüni, Deepak L Bhatt, Atul Verma, ,

<h4>Importance</h4>Postoperative atrial fibrillation (POAF) occurring after cardiac surgery is associated with adverse outcomes. Whether POAF persists beyond discharge is not well defined.<h4>Objective</h4>To determine whether continuous cardiac rhythm monitoring enhances detection of POAF among cardiac surgical patients during the first 30 days after hospital discharge compared with usual care.<h4>Design, setting, and ... Read more >>

JAMA Netw Open (JAMA network open)
[2021, 4(8):e2121867]

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Management of Atrial Fibrillation in 2021: An Updated Comparison of the Current CCS/CHRS, ESC, and AHA/ACC/HRS Guidelines.

Christopher C Cheung, Stanley Nattel, Laurent Macle, Jason G Andrade,

Given its complexity, the management of atrial fibrillation (AF) has relied increasingly on expert guideline recommendations; however, discrepancies between these professional societies can lead to confusion among practicing clinicians. This article compares the recommendations in the 2019 American Heart Association (AHA)/American College of Cardiology (ACC)/Heart Rhythm Society (HRS), the 2020 ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2021, 37(10):1607-1618]

Cited: 1 time

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Atrial Tachycardia Ablation at the Pulmonic Valve in a Patient With Congenitally Corrected Transposition of Great Arteries.

Christopher C Cheung, Eunjeong Kim, Zian H Tseng, Edward P Gerstenfeld, Robert H Anderson, Damian Sanchez-Quintana, Eduardo Back Sternick, Henry H Hsia,

JACC Clin Electrophysiol (JACC. Clinical electrophysiology)
[2021, 7(11):1473-1481]

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Outcomes of acute respiratory distress syndrome in COVID-19 patients compared to the general population: a systematic review and meta-analysis.

Adam A Dmytriw, Richa Chibbar, Petty Pin Yu Chen, Michael D Traynor, Dong Wook Kim, Fernando P Bruno, Christopher C Cheung, Anuj Pareek, Andrew Chia Chen Chou, Jeffrey Graham, Mahmoud Dibas, Geeta Paranjape, Natalie L Reierson, Shelby Kamrowski, Jacob Rozowsky, Averi Barrett, Megan Schmidt, Disha Shahani, Kathryn Cowie, Amber R Davis, Mohamed Abdelmegeed, Jillienne C Touchette, Kevin M Kallmes, John M Pederson, Praneeth Reddy Keesari,

<h4>Introduction</h4>Acute respiratory distress syndrome (ARDS) due to coronavirus disease 2019 (COVID-19) often leads to mortality. Outcomes of patients with COVID-19-related ARDS compared to ARDS unrelated to COVID-19 is not well characterized.<h4>Areas covered</h4>We performed a systematic review of PubMed, Scopus, and MedRxiv 11/1/2019 to 3/1/2021, including studies comparing outcomes in COVID-19-related ... Read more >>

Expert Rev Respir Med (Expert review of respiratory medicine)
[2021, 15(10):1347-1354]

Cited: 1 time

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Patch monitors for arrhythmia monitoring in patients for suspected inherited arrhythmia syndrome.

Christopher C Cheung, Brianna Davies, Karen Gibbs, Zachary W Laksman, Andrew D Krahn,

<h4>Introduction</h4>Patients undergoing evaluation for an inherited arrhythmia syndrome undertake a series of ambulatory investigations including 24-h Holter monitor, exercise treadmill testing (ETT), and others. Patch monitors may simplify the evaluation, providing accurate arrhythmia evaluation and QT assessment.<h4>Methods and results</h4>Patients referred for evaluation of an inherited arrhythmia syndrome underwent standard investigations, ... Read more >>

J Cardiovasc Electrophysiol (Journal of cardiovascular electrophysiology)
[2021, 32(3):856-859]

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Twirling around the block-A complex case of cardiac sarcoidosis.

Christopher C Cheung, Annahita Sarcon, Bernard Belhassen, Melvin Scheinman,

Heart Rhythm (Heart rhythm)
[2021, 18(1):151-153]

Cited: 0 times

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Arrhythmic Mitral Valve Prolapse: Looking for a Needle in a Haystack.

Wael Alqarawi, Christopher C Cheung, Brianna Davies, Andrew D Krahn,

J Am Coll Cardiol (Journal of the American College of Cardiology)
[2020, 76(22):2688-2689]

Cited: 0 times

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ECG quiz - Where is the block?

Christopher C Cheung, Edward P Gerstenfeld,

A 68 year-old man presented with palpitations. A standard 12‑lead ECG was performed and demonstrated significant conduction disease. Using findings on the index and prior ECGs, we review the differential diagnoses for his conduction abnormality. We discuss the possibility of phase III delay, phase IV delay, and "supernormal conduction" to explain ... Read more >>

J Electrocardiol (Journal of electrocardiology)
[2021, 64:42-44]

Cited: 0 times

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The 2020 Canadian Cardiovascular Society/Canadian Heart Rhythm Society Comprehensive Guidelines for the Management of Atrial Fibrillation.

Jason G Andrade, Martin Aguilar, Clare Atzema, Alan Bell, John A Cairns, Christopher C Cheung, Jafna L Cox, Paul Dorian, David J Gladstone, Jeff S Healey, Paul Khairy, Kori Leblanc, M Sean McMurtry, L Brent Mitchell, Girish M Nair, Stanley Nattel, Ratika Parkash, Louise Pilote, Roopinder K Sandhu, Jean-François Sarrazin, Mukul Sharma, Allan C Skanes, Mario Talajic, Teresa S M Tsang, Atul Verma, Subodh Verma, Richard Whitlock, D George Wyse, Laurent Macle, ,

The Canadian Cardiovascular Society (CCS) atrial fibrillation (AF) guidelines program was developed to aid clinicians in the management of these complex patients, as well as to provide direction to policy makers and health care systems regarding related issues. The most recent comprehensive CCS AF guidelines update was published in 2010. ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2020, 36(12):1847-1948]

Cited: 15 times

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Repeat Atrial Fibrillation Ablation Procedures in the CIRCA-DOSE Study.

Christopher C Cheung, Marc W Deyell, Laurent Macle, Atul Verma, Jean Champagne, Peter Leong-Sit, Paul Novak, Mariano Badra-Verdu, John Sapp, Paul Khairy, Jason G Andrade,

Circ Arrhythm Electrophysiol (Circulation. Arrhythmia and electrophysiology)
[2020, 13(9):e008480]

Cited: 2 times

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Hemoptysis and Cryoballoon Ablation: Is it Crystal Clear?

Jason G Andrade, Christopher C Cheung, Marc W Deyell,

JACC Clin Electrophysiol (JACC. Clinical electrophysiology)
[2020, 6(7):783-785]

Cited: 0 times

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Changes to the electrocardiogram during exercise in anorexia nervosa.

Mikyla L Janzen, Christopher C Cheung, Nathaniel M Hawkins, Julia Raudzus, Josie Geller, Pei-Yoong Lam, Andrew D Krahn,

<h4>Background</h4>Anorexia Nervosa (AN) is an eating disorder characterized by low body weight, distorted body image, and an intense fear of gaining weight. Electrocardiogram (ECG) changes, particularly in the QT interval, have been implicated in AN-associated sudden death but not well defined.<h4>Objectives</h4>To characterize QT interval changes during exercise in anorexia nervosa.<h4>Methods</h4>The ... Read more >>

J Electrocardiol (Journal of electrocardiology)
[2020, 61:99-105]

Cited: 0 times

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Driving Restrictions and Early Arrhythmias in Patients Receiving a Primary-Prevention Implantable Cardioverter-Defibrillator (DREAM-ICD) Study.

Christian Steinberg, Christopher C Cheung, Darryl Wan, Amit Sodhi, Sebastian Claros, John A Staples, François Philippon, Zachary Laksman, Jean-François Sarrazin, Matthew Bennett, Benoit Plourde, Marc W Deyell, Jason G Andrade, Karine Roy, John A Yeung-Lai-Wah, Franck Molin, Nathaniel M Hawkins, Louis Blier, Isabelle Nault, Gilles O'Hara, Andrew D Krahn, Jean Champagne, Santabhanu Chakrabarti,

<h4>Background</h4>Current guidelines recommend 4 weeks of private driving restriction after implantation of a primary-prevention implantable cardioverter-defibrillator (ICD). These driving restrictions result in significant inconvenience and social implications. Advances in medical treatment and ICD programming have lowered the overall rate of device therapies. The objective of this study was to assess ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2020, 36(8):1269-1277]

Cited: 0 times

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In-hospital and long-term outcomes among patients with spontaneous coronary artery dissection presenting with ventricular tachycardia/fibrillation.

Christopher C Cheung, Andrew Starovoytov, Ashkan Parsa, Jason G Andrade, Andrew D Krahn, Matthew Bennett, Jacqueline Saw,

<h4>Background</h4>Spontaneous coronary artery dissection (SCAD) is an important cause of myocardial infarction (MI) in young to middle-age women. Ventricular tachycardia/ventricular fibrillation (VT/VF) may complicate acute SCAD presentations, and the long-term outcomes are unknown.<h4>Objective</h4>The purpose of this study was to report the outcomes of SCAD patients presenting with VT/VF.<h4>Methods</h4>We analyzed our ... Read more >>

Heart Rhythm (Heart rhythm)
[2020, 17(11):1864-1869]

Cited: 0 times

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Multilead QT Screening Is Necessary for QT Measurement: Implications for Management of Patients in the COVID-19 Era.

Christopher C Cheung, Brianna Davies, Karen Gibbs, Zachary W Laksman, Andrew D Krahn,

JACC Clin Electrophysiol (JACC. Clinical electrophysiology)
[2020, 6(7):878-880]

Cited: 4 times

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Watch Carefully: Interpreting Positive Predictive Values With Wearable Devices.

Christopher C Cheung, Jason G Andrade, Andrew D Krahn,

J Am Coll Cardiol (Journal of the American College of Cardiology)
[2020, 75(11):1363-1364]

Cited: 0 times

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Wearable cardioverter-defibrillators: A review of evidence and indications.

Christopher C Cheung, Jeffrey E Olgin, Byron K Lee,

The wearable cardioverter-defibrillator (WCD) was first approved for clinical use in 2002, and is routinely used in select populations at high risk for sudden cardiac death. WCDs are frequently considered as a bridge to definitive therapy or in circumstances where insertion of conventional implantable cardioverter-defibrillators (ICD) is temporarily contraindicated. In ... Read more >>

Trends Cardiovasc Med (Trends in cardiovascular medicine)
[2021, 31(3):196-201]

Cited: 1 time

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Arrhythmias in Cardiac Amyloidosis: Challenges in Risk Stratification and Treatment.

Christopher C Cheung, Thomas M Roston, Jason G Andrade, Matthew T Bennett, Margot K Davis,

Cardiac amyloidosis occurs secondarily to the deposition of insoluble protein fibrils in cardiac tissue leading to progressive myocardial dysfunction, clinical heart failure, and arrhythmia. In recent years, increasing awareness and improved screening have resulted in an increased prevalence of cardiac amyloidosis, with contemporary estimates reporting a prevalence of 18-55 cases ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2020, 36(3):416-423]

Cited: 3 times

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Caring for the pregnant woman with an inherited arrhythmia syndrome.

Thomas M Roston, Christian van der Werf, Christopher C Cheung, Jasmine Grewal, Brianna Davies, Arthur A M Wilde, Andrew D Krahn,

Pregnancy is a period of increased cardiovascular risk in a woman's life. In the setting of an inherited arrhythmia syndrome (IAS), cardiologists and obstetricians may be unfamiliar with cardiovascular optimization and risk stratification in pregnancy. Historically, there were little data addressing the safety of pregnancy in these rare disorders. Recent ... Read more >>

Heart Rhythm (Heart rhythm)
[2020, 17(2):341-348]

Cited: 8 times

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Genetic Testing in Inherited Arrhythmias: Approach, Limitations, and Challenges.

Christopher C Cheung, Rafik Tadros, Brianna Davies, Andrew D Krahn,

Genetic testing is playing an ever-expanding role in cardiovascular care and is becoming part of the "toolkit" for the cardiovascular clinician. In patients with inherited arrhythmias, genetic testing can confirm a suspected diagnosis, establish a diagnosis in unexplained cases, and help facilitate cascade family screening. Many inherited arrhythmia syndromes are ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2020, 36(4):584-587]

Cited: 0 times

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Changes on the electrocardiogram in anorexia nervosa: A case control study.

Mikyla Janzen, Christopher C Cheung, Christian Steinberg, Pei-Yoong Lam, Andrew D Krahn,

<h4>Purpose</h4>Anorexia nervosa is a complex psychiatric condition with increased mortality. The electrocardiogram (ECG) may show repolarization changes which may associate with an increased risk of sudden death. Up to 80% of patients may be prescribed psychopharmacotherapies which alter the ECG, potentially compounding arrhythmic risk. This study aimed to describe and ... Read more >>

J Electrocardiol (Journal of electrocardiology)
[2019, 56:64-69]

Cited: 0 times

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The Potential Impact of Intrathoracic Impedance on Defibrillation Threshold Testing in S-ICDs.

Christopher C Cheung, Jacob M Larsen, Jamil Bashir, Paul Dorian, Zachary W Laksman,

A man with an ischemic cardiomyopathy and chronic obstructive pulmonary disease underwent subcutaneous implantable cardioverter-defibrillator (S-ICD) placement under general anesthesia. Following induction of ventricular fibrillation (VF), defibrillation testing (65J) failed, requiring external rescue. Repeat shock testing with reversed polarity (65J) failed. A third shock and external defibrillation failed (80J and 200J), ... Read more >>

Can J Cardiol (The Canadian journal of cardiology)
[2019, 35(11):1604.e13-1604.e16]

Cited: 1 time

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