Zak Loring | Scholars@Duke

Zak Loring
Assistant Professor of Medicine

I am a cardiology fellow with research and teaching experience interested in pursuing a career in both clinical cardiology and clinical research. My research focus is on understanding the relationship between individual cardiac physiology/pathophysiology and mechanisms of rhythm disorders to improve patient selection criteria for therapies and aid clinical decision making.

Current Appointments & Affiliations

Assistant Professor of Medicine, Medicine, Cardiology, Medicine 2022

Contact Information

zak.loring@duke.edu

Background
Education, Training, & Certifications
- Fellowship, Cardiology, Duke University School of Medicine 2016 - 2020
- Residency, Internal Medicine, University of California San Francisco, School of Medicine 2013 - 2016
- M.D., Duke University School of Medicine 2013
Research
External Relationships
- Boston Scientific Corporation
- Cook Medical
- Huxley Medical, Inc
Publications & Artistic Works
Selected Publications
- Academic Articles
  - Loring, Zak, Anna Giczewska, Paul Hofmann, Karen Chiswell, Todd T. Schlegel, Martin Ugander, Kevin P. Jackson, Jonathan P. Piccini, and Brett D. Atwater. “Electrocardiographic parameters associated with pacemaker induced cardiomyopathy.” J Electrocardiol 77 (December 13, 2022): 17–22. https://doi.org/10.1016/j.jelectrocard.2022.12.002.
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  - Loring, Zak, Fredrik Holmqvist, Edward Sze, Fawaz Alenezi, Kristen Campbell, Jason I. Koontz, Eric J. Velazquez, Brett D. Atwater, Tristram D. Bahnson, and James P. Daubert. “Acute echocardiographic and hemodynamic response to his-bundle pacing in patients with first-degree atrioventricular block.” Ann Noninvasive Electrocardiol 27, no. 4 (July 2022): e12954. https://doi.org/10.1111/anec.12954.
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  - Chew, Derek S., Kelley A. Jones, Zak Loring, Eric Black-Maier, Peter A. Noseworthy, Derek V. Exner, Douglas L. Packer, Jennifer Grant, Daniel B. Mark, and Jonathan P. Piccini. “Diagnosis-to-ablation time predicts recurrent atrial fibrillation and rehospitalization following catheter ablation.” Heart Rhythm O2 3, no. 1 (February 2022): 23–31. https://doi.org/10.1016/j.hroo.2021.11.012.
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  - Loring, Zak, and Tristram D. Bahnson. “Is there a mortality benefit of atrial fibrillation ablation?” J Cardiovasc Electrophysiol 33, no. 2 (February 2022): 194–96. https://doi.org/10.1111/jce.15328.
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  - Friedman, Daniel J., Kasper Emerek, Peter L. Sørensen, Claus Graff, Zak Loring, Kevin P. Jackson, Christoffer Polcwiartek, et al. “Relationship Between Electrical and Mechanical Dyssynchrony and Outcomes Among Patients Undergoing Cardiac Resynchronization Therapy.” Circ Arrhythm Electrophysiol 14, no. 12 (December 2021): e010217. https://doi.org/10.1161/CIRCEP.121.010217.
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  - Oyediran, Isaac O., Sainikitha Prattipati, Francis M. Sakita, Godfrey L. Kweka, Tumsifu G. Tarimo, Timothy Peterson, Zak Loring, Alexander T. Limkakeng, Gerald S. Bloomfield, and Julian T. Hertz. “The prevalence, management, and thirty-day outcomes of symptomatic atrial fibrillation in a Tanzanian emergency department.” Afr J Emerg Med 11, no. 4 (December 2021): 404–9. https://doi.org/10.1016/j.afjem.2021.07.002.
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  - Malik, John, Zak Loring, Jonathan P. Piccini, and Hau-Tieng Wu. “Interpretable morphological features for efficient single-lead automatic ventricular ectopy detection.” J Electrocardiol 65 (2021): 55–63. https://doi.org/10.1016/j.jelectrocard.2020.11.014.
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  - Atwater, Brett D., Kasper Emerek, Zainab Samad, Edward Sze, Eric Black-Maier, Zak Loring, Martin Ugander, et al. “Predicting the Development of Reduced Left Ventricular Ejection Fraction in Patients With Left Bundle Branch Block.” Am J Cardiol 137 (December 15, 2020): 39–44. https://doi.org/10.1016/j.amjcard.2020.09.034.
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  - Chew, Derek S., Zak Loring, Jatin Anand, Marat Fudim, Angela Lowenstern, Jennifer A. Rymer, Kristin E. D. Weimer, et al. “Economic Evaluation of Catheter Ablation of Atrial Fibrillation in Patients with Heart Failure With Reduced Ejection Fraction.” Circ Cardiovasc Qual Outcomes 13, no. 12 (December 2020): e007094. https://doi.org/10.1161/CIRCOUTCOMES.120.007094.
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  - Loring, Zak, Rebecca North, Anne S. Hellkamp, Brett D. Atwater, Camille G. Frazier-Mills, Kevin P. Jackson, Sean D. Pokorney, Gervasio A. Lamas, and Jonathan P. Piccini. “VVI pacing with normal QRS duration and ventricular function: MOST trial findings relevant to leadless pacemakers.” Pacing Clin Electrophysiol 43, no. 12 (December 2020): 1461–66. https://doi.org/10.1111/pace.14100.
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  - Polcwiartek, Christoffer, Daniel J. Friedman, Kasper Emerek, Claus Graff, Peter L. Sørensen, Joseph Kisslo, Zak Loring, et al. “Concomitant changes in ventricular depolarization and repolarization and long-term outcomes of biventricular pacing.” Pacing Clin Electrophysiol 43, no. 11 (November 2020): 1333–43. https://doi.org/10.1111/pace.14065.
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  - Loring, Zak, DaJuanicia N. Holmes, Roland A. Matsouaka, Anne B. Curtis, John D. Day, Nihar Desai, Kenneth A. Ellenbogen, et al. “Procedural Patterns and Safety of Atrial Fibrillation Ablation: Findings From Get With The Guidelines-Atrial Fibrillation.” Circ Arrhythm Electrophysiol 13, no. 9 (September 2020): e007944. https://doi.org/10.1161/CIRCEP.119.007944.
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  - Loring, Zak, Sounok Sen, Eric Black-Maier, Brett D. Atwater, Stuart D. Russell, Adam D. DeVore, and Jonathan P. Piccini. “Reducing ECG Artifact From Left Ventricular Assist Device Electromagnetic Interference.” J Am Heart Assoc 9, no. 16 (August 18, 2020): e017563. https://doi.org/10.1161/JAHA.120.017563.
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  - Wang, Allen, Tracy Truong, Eric Black-Maier, Cynthia Green, Kristen B. Campbell, Adam S. Barnett, Janice Febre, et al. “Catheter ablation of atrial fibrillation in patients with diabetes mellitus.” Heart Rhythm O2 1, no. 3 (August 2020): 180–88. https://doi.org/10.1016/j.hroo.2020.04.006.
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  - Rehorn, Michael R., Jason Koontz, Adam S. Barnett, Eric Black-Maier, Jonathan P. Piccini, Zak Loring, Jacob Schroder, and Albert Y. Sun. “Noninvasive electrocardiographic mapping of ventricular tachycardia in a patient with a left ventricular assist device.” Heartrhythm Case Rep 6, no. 7 (July 2020): 398–401. https://doi.org/10.1016/j.hrcr.2020.03.015.
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  - Atwater, Brett D., Kasper Emerek, Zak Loring, Christoffer Polcwiartek, Kevin P. Jackson, and Daniel J. Friedman. “Frequency and causes of QRS prolongation during exercise electrocardiogram testing in biventricular paced patients with heart failure.” Heartrhythm Case Rep 6, no. 6 (June 2020): 308–12. https://doi.org/10.1016/j.hrcr.2020.02.006.
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  - Loring, Zak, and Jonathan P. Piccini. “The reward of understanding risk in atrial fibrillation.” Eur J Prev Cardiol, May 14, 2020. https://doi.org/10.1177/2047487320925215.
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  - Loring, Zak, and Jonathan P. Piccini. “The reward of understanding risk in atrial fibrillation.” Eur J Prev Cardiol, May 13, 2020, 2047487320925215. https://doi.org/10.1177/2047487320925215.
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  - Loring, Zak, Daniel J. Friedman, Kasper Emerek, Claus Graff, Peter L. Sørensen, Steen M. Hansen, Bjorn Wieslander, Martin Ugander, Peter Søgaard, and Brett D. Atwater. “Lead one ratio in left bundle branch block predicts poor cardiac resynchronization therapy response.” Pacing Clin Electrophysiol 43, no. 5 (May 2020): 503–10. https://doi.org/10.1111/pace.13916.
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  - Chew, Derek S., Eric Black-Maier, Zak Loring, Peter A. Noseworthy, Douglas L. Packer, Derek V. Exner, Daniel B. Mark, and Jonathan P. Piccini. “Diagnosis-to-Ablation Time and Recurrence of Atrial Fibrillation Following Catheter Ablation: A Systematic Review and Meta-Analysis of Observational Studies.” Circ Arrhythm Electrophysiol 13, no. 4 (April 2020): e008128. https://doi.org/10.1161/CIRCEP.119.008128.
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  - Zeitler, Emily P., Daniel J. Friedman, Zak Loring, Kristen B. Campbell, Sarah A. Goldstein, Zachary K. Wegermann, Jane Schutz, et al. “Complications involving the subcutaneous implantable cardioverter-defibrillator: Lessons learned from MAUDE.” Heart Rhythm 17, no. 3 (March 2020): 447–54. https://doi.org/10.1016/j.hrthm.2019.09.024.
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  - Hertz, Julian T., Godfrey L. Kweka, Gerald S. Bloomfield, Alexander T. Limkakeng, Zak Loring, Gloria Temu, Blandina T. Mmbaga, Charles J. Gerardo, and Francis M. Sakita. “Patterns of Emergency Care for Possible Acute Coronary Syndrome Among Patients with Chest Pain or Shortness of Breath at a Tanzanian Referral Hospital.” Glob Heart 15, no. 1 (February 6, 2020): 9. https://doi.org/10.5334/gh.402.
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  - Atwater, Brett D., W Schuyler Jones, Zak Loring, and Daniel J. Friedman. “Changes in the optimal cardiac resynchronization therapy pacing configuration during physiologic stress.” J Electrocardiol 62 (2020): 124–28. https://doi.org/10.1016/j.jelectrocard.2020.08.012.
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  - Loring, Zak, Peter Shrader, Larry A. Allen, Rosalia Blanco, Paul S. Chan, Michael D. Ezekowitz, Gregg C. Fonarow, et al. “Guideline-directed therapies for comorbidities and clinical outcomes among individuals with atrial fibrillation.” Am Heart J 219 (January 2020): 21–30. https://doi.org/10.1016/j.ahj.2019.10.008.
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  - Hertz, Julian T., Francis M. Sakita, Godfrey L. Kweka, Zak Loring, Nathan M. Thielman, Gloria Temu, and John A. Bartlett. “Healthcare-seeking behaviour, barriers to care and predictors of symptom improvement among patients with cardiovascular disease in northern Tanzania.” Int Health 14, no. 4 (December 15, 2019): 373–80. https://doi.org/10.1093/inthealth/ihz095.
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  - Atwater, Brett D., Kasper Emerek, Peter L. Sørensen, Steen M. Hansen, Zak Loring, Claus Graff, Christoffer Polcwiartek, Joseph Kisslo, Peter Søgaard, and Daniel J. Friedman. “PR Prolongation predicts inadequate resynchronization with biventricular pacing in left bundle branch block.” Pacing Clin Electrophysiol 42, no. 11 (November 2019): 1477–85. https://doi.org/10.1111/pace.13802.
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  - Black-Maier, Eric, Alice Parish, Benjamin A. Steinberg, Cynthia L. Green, Zak Loring, Adam S. Barnett, Sana M. Al-Khatib, et al. “Predicting atrial fibrillation recurrence after ablation in patients with heart failure: Validity of the APPLE and CAAP-AF risk scoring systems.” Pacing Clin Electrophysiol 42, no. 11 (November 2019): 1440–47. https://doi.org/10.1111/pace.13805.
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  - Friedman, Daniel J., Kasper Emerek, Steen Møller Hansen, Christoffer Polcwiartek, Peter L. Sørensen, Zak Loring, Joanne Sutter, et al. “Non-invasively quantified changes in left ventricular activation predict outcomes in patients undergoing cardiac resynchronization therapy.” J Cardiovasc Electrophysiol 30, no. 11 (November 2019): 2475–83. https://doi.org/10.1111/jce.14192.
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  - Loring, Zak, Suchit Mehrotra, and Jonathan P. Piccini. “Machine learning in 'big data': handle with care.” Europace 21, no. 9 (September 1, 2019): 1284–85. https://doi.org/10.1093/europace/euz130.
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  - Loring, Zak, and Brett D. Atwater. “Editorial commentary: Harm from left bundle branch block: We are the tortoise, not the hare.” Trends Cardiovasc Med 29, no. 6 (August 2019): 343–44. https://doi.org/10.1016/j.tcm.2018.11.001.
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  - Loring, Zak, Brett D. Atwater, Xiaojuan Xia, Jimmy Axelsson, Igor Klem, Robin Nijveldt, Erik B. Schelbert, et al. “Low lead one ratio predicts clinical outcomes in left bundle branch block.” J Cardiovasc Electrophysiol 30, no. 5 (May 2019): 709–16. https://doi.org/10.1111/jce.13875.
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  - Loring, Zak, and Albert Y. Sun. “Should His Bundle Pacing Be Preferred over Cardiac Resynchronization Therapy Following Atrioventricular Junction Ablation?” Cardiol Clin 37, no. 2 (May 2019): 231–40. https://doi.org/10.1016/j.ccl.2019.01.006.
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  - Kochar, Ajar, Jennifer Rymer, Zainab Samad, and Zainab Duke Cardiovascular Education Group. “Disrupting Fellow Education Through Group Texting: WhatsApp in Fellow Education?” J Am Coll Cardiol 72, no. 25 (December 25, 2018): 3366–69. https://doi.org/10.1016/j.jacc.2018.11.007.
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  - Loring, Zak, and Jonathan P. Piccini. “Atrial fibrillation and obstructive lung disease: Don't fear the β-blocker.” Heart Rhythm 15, no. 12 (December 2018): 1833–34. https://doi.org/10.1016/j.hrthm.2018.07.023.
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  - Sze, E., Z. Samad, A. Dunning, K. B. Campbell, Z. Loring, B. D. Atwater, K. Chiswell, J. A. Kisslo, E. J. Velazquez, and J. P. Daubert. “Impaired Recovery of Left Ventricular Function in Patients With Cardiomyopathy and Left Bundle Branch Block (vol 71, pg 306, 2018).” Journal of the American College of Cardiology 71, no. 11 (March 20, 2018): 1296–1296.
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  - Sze, Edward, Zainab Samad, Allison Dunning, Kristen Bova Campbell, Zak Loring, Brett D. Atwater, Karen Chiswell, Joseph A. Kisslo, Eric J. Velazquez, and James P. Daubert. “Impaired Recovery of Left Ventricular Function in Patients With Cardiomyopathy and Left Bundle Branch Block.” J Am Coll Cardiol 71, no. 3 (January 23, 2018): 306–17. https://doi.org/10.1016/j.jacc.2017.11.020.
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  - Loring, Zak, Daniel J. Friedman, Albert Y. Sun, and Brett D. Atwater. “Pitfalls in programming: The HV and VH intervals in his bundle pacing.” J Electrocardiol 51, no. 5 (2018): 776–78. https://doi.org/10.1016/j.jelectrocard.2018.06.002.
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  - Sze, Edward, Allison Dunning, Zak Loring, Brett D. Atwater, Karen Chiswell, James P. Daubert, Joseph A. Kisslo, Daniel B. Mark, Eric J. Velazquez, and Zainab Samad. “Comparison of Incidence of Left Ventricular Systolic Dysfunction Among Patients With Left Bundle Branch Block Versus Those With Normal QRS Duration.” Am J Cardiol 120, no. 11 (December 1, 2017): 1990–97. https://doi.org/10.1016/j.amjcard.2017.08.003.
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  - Pahlm, Olle, Cees A. Swenne, Sumche Man, Yama Fakhri, Brett D. Atwater, Ljuba Bacharova, Lia Bang, et al. “Dr. Galen Wagner (1939-2016) as an Academic Writer: An Overview of his Peer-reviewed Scientific Publications.” J Electrocardiol 50, no. 1 (2017): 47–73. https://doi.org/10.1016/j.jelectrocard.2016.11.008.
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  - Loring, Zak, Peter Hanna, and Cara N. Pellegrini. “Longer Ambulatory ECG Monitoring Increases Identification of Clinically Significant Ectopy.” Pacing Clin Electrophysiol 39, no. 6 (June 2016): 592–97. https://doi.org/10.1111/pace.12852.
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  - Manesh, Reza Sedighi, Stephanie E. Rogers, Zak Loring, Elizabeth Stewart, Gurpreet Dhaliwal, and Lawrence M. Tierney. “A Physician With Thigh Pain.” Fed Pract 33, no. 6 (June 2016): 42–44.
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  - Loring, Zak, Jenny K. Cohen, Juliet Morgan, Joseph Yang, and Jeffrey Zimmet. “The late presenting STEMI: How ECG scores can be used to estimate event time.” J Electrocardiol 49, no. 5 (2016): 740–43. https://doi.org/10.1016/j.jelectrocard.2016.06.013.
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  - Wieslander, Björn, Zak Loring, Wojciech Zareba, Scott McNitt, Galen S. Wagner, James P. Daubert, and David G. Strauss. “Scar burden assessed by Selvester QRS score predicts prognosis, not CRT clinical benefit in preventing heart failure event and death: A MADIT-CRT sub-study.” J Electrocardiol 49, no. 4 (2016): 603–9. https://doi.org/10.1016/j.jelectrocard.2016.04.008.
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  - Chan, Dulciana D., Katherine C. Wu, Zak Loring, Loriano Galeotti, Gary Gerstenblith, Gordon Tomaselli, Robert G. Weiss, Galen S. Wagner, and David G. Strauss. “Comparison of the relation between left ventricular anatomy and QRS duration in patients with cardiomyopathy with versus without left bundle branch block.” Am J Cardiol 113, no. 10 (May 15, 2014): 1717–22. https://doi.org/10.1016/j.amjcard.2014.02.026.
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  - Johannesen, L., J. Vicente, R. A. Gray, L. Galeotti, Z. Loring, C. E. Garnett, J. Florian, M. Ugander, N. Stockbridge, and D. G. Strauss. “Improving the assessment of heart toxicity for all new drugs through translational regulatory science.” Clin Pharmacol Ther 95, no. 5 (May 2014): 501–8. https://doi.org/10.1038/clpt.2013.238.
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  - Galeotti, Loriano, Peter M. van Dam, Zak Loring, Dulciana Chan, and David G. Strauss. “Evaluating strict and conventional left bundle branch block criteria using electrocardiographic simulations.” Europace 15, no. 12 (December 2013): 1816–21. https://doi.org/10.1093/europace/eut132.
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  - Strauss, David G., Zak Loring, Ronald H. Selvester, Gary Gerstenblith, Gordon Tomaselli, Robert G. Weiss, Galen S. Wagner, and Katherine C. Wu. “Right, but not left, bundle branch block is associated with large anteroseptal scar.” J Am Coll Cardiol 62, no. 11 (September 10, 2013): 959–67. https://doi.org/10.1016/j.jacc.2013.04.060.
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  - Loring, Zak, Wojciech Zareba, Scott McNitt, David G. Strauss, Galen S. Wagner, and James P. Daubert. “ECG quantification of myocardial scar and risk stratification in MADIT-II.” Ann Noninvasive Electrocardiol 18, no. 5 (September 2013): 427–35. https://doi.org/10.1111/anec.12065.
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  - Risum, Niels, David Strauss, Peter Sogaard, Zak Loring, Thomas Fritz Hansen, Niels Eske Bruun, Galen Wagner, and Joseph Kisslo. “Left bundle-branch block: the relationship between electrocardiogram electrical activation and echocardiography mechanical contraction.” Am Heart J 166, no. 2 (August 2013): 340–48. https://doi.org/10.1016/j.ahj.2013.04.005.
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  - Andersson, Linus G., Katherine C. Wu, Björn Wieslander, Zak Loring, Terry F. Frank, Charles Maynard, Gary Gerstenblith, et al. “Left ventricular mechanical dyssynchrony by cardiac magnetic resonance is greater in patients with strict vs nonstrict electrocardiogram criteria for left bundle-branch block.” Am Heart J 165, no. 6 (June 2013): 956–63. https://doi.org/10.1016/j.ahj.2013.03.013.
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  - Loring, Zak, Daniel A. Caños, Kimberly Selzman, Naomi D. Herz, Henry Silverman, Thomas E. MaCurdy, Christopher M. Worrall, et al. “Left bundle branch block predicts better survival in women than men receiving cardiac resynchronization therapy: long-term follow-up of ∼ 145,000 patients.” Jacc Heart Fail 1, no. 3 (June 2013): 237–44. https://doi.org/10.1016/j.jchf.2013.03.005.
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  - Loring, Zak, David G. Strauss, Gary Gerstenblith, Gordon F. Tomaselli, Robert G. Weiss, and Katherine C. Wu. “Cardiac MRI scar patterns differ by sex in an implantable cardioverter-defibrillator and cardiac resynchronization therapy cohort.” Heart Rhythm 10, no. 5 (May 2013): 659–65. https://doi.org/10.1016/j.hrthm.2013.01.003.
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  - Hassell, Mariëlla E. C. J., Sebastiaan C. A. M. Bekkers, Zak Loring, Irene Van Hellemond, Sjoerd Bouwmeester, Kirian Van der Weg, Charles Maynard, Anton P. M. Gorgels, and Galen S. Wagner. “The predictive value of an ECG-estimated Acute Ischemia Index for prognosis of myocardial salvage and infarct healing 3months following inferior ST-elevated myocardial infarction.” J Electrocardiol 46, no. 3 (2013): 221–28. https://doi.org/10.1016/j.jelectrocard.2013.02.009.
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  - Wieslander, Björn, Katherine C. Wu, Zak Loring, Linus G. Andersson, Terry F. Frank, Gary Gerstenblith, Gordon F. Tomaselli, et al. “Localization of myocardial scar in patients with cardiomyopathy and left bundle branch block using electrocardiographic Selvester QRS scoring.” J Electrocardiol 46, no. 3 (2013): 249–55. https://doi.org/10.1016/j.jelectrocard.2013.02.006.
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  - Loring, Zak, Charles W. Olson, Charles Maynard, and Nina Hakacova. “Modeling vectorcardiograms based on left ventricle papillary muscle position.” J Electrocardiol 44, no. 5 (2011): 584–89. https://doi.org/10.1016/j.jelectrocard.2011.06.010.
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  - Loring, Zak, Sreetharan Chelliah, Ronald H. Selvester, Galen Wagner, and David G. Strauss. “A detailed guide for quantification of myocardial scar with the Selvester QRS score in the presence of electrocardiogram confounders.” J Electrocardiol 44, no. 5 (2011): 544–54. https://doi.org/10.1016/j.jelectrocard.2011.06.008.
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  - Hooper, Christopher, Swamy S. Puttamadappa, Zak Loring, Alexander Shekhtman, and Joanna C. Bakowska. “Spartin activates atrophin-1-interacting protein 4 (AIP4) E3 ubiquitin ligase and promotes ubiquitination of adipophilin on lipid droplets.” Bmc Biol 8 (May 26, 2010): 72. https://doi.org/10.1186/1741-7007-8-72.
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- Conference Papers
  - Loring, Zak, Suchit Mehrotra, Jonathan P. Piccini, John Camm, David Carlson, Gregg C. Fonarow, Keith A. A. Fox, Eric D. Peterson, Karen Pieper, and Ajay K. Kakkar. “Machine learning does not improve upon traditional regression in predicting outcomes in atrial fibrillation: an analysis of the ORBIT-AF and GARFIELD-AF registries.” In Europace, 22:1635–44, 2020. https://doi.org/10.1093/europace/euaa172.
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  - Loring, Zak, Peter Shrader, Larry Allen, Rosalia Blanco, Paul Chan, Michael Ezekowitz, Gregg Fonarow, et al. “ASSOCIATION BETWEEN GUIDELINE-DIRECTED MEDICAL THERAPIES FOR COMORBID CONDITIONS AND CLINICAL OUTCOMES AMONG INDIVIDUALS WITH ATRIAL FIBRILLATION.” In Journal of the American College of Cardiology, 73:476–476. Elsevier BV, 2019. https://doi.org/10.1016/s0735-1097(19)31084-8.
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  - Loring, Zak, Rebecca North, Anne Hellkamp, Gervasio A. Lamas, and Jonathan P. Piccini. “Asynchronous Ventricular Pacing in Patients With Normal QRS Duration and Ventricular Function: Implications for Leadless Pacemakers.” In Circulation, Vol. 140, 2019.
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  - Herz, Naomi D., David G. Strauss, Mary E. Ritchey, Zak Loring, Samantha B. Jacobs, Henry Silverman, Christopher M. Worrall, Jeffrey Kelman, Ileana L. Pina, and Daniel A. Canos. “Cardiac Resynchronization Therapy Defibrillators: Pre and Postmarket Experience.” In Circulation, Vol. 126. LIPPINCOTT WILLIAMS & WILKINS, 2012.
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  - Johannesen, Lars, Jose Vicente, Loriano Galeotti, Zak Loring, Jeffry A. Florian, Christine E. Garnett, Norman Stockbridge, and David G. Strauss. “Normal Limits of Variability of Spatial QRS-T Angle and Ventricular Gradient: Analysis of 20 Thorough-QT Studies.” In Circulation, Vol. 126. LIPPINCOTT WILLIAMS & WILKINS, 2012.
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  - Loring, Zak, Daneil A. Canos, Kimberly Selzman, Naomi D. Herz, Henry Silverman, Thomas F. MaCurdy, Christopher M. Worrall, et al. “Left Bundle Branch Block Predicts Better Survival in Women than Men Receiving Cardiac Resynchronization Therapy: Long Term Follow-Up of 145,000 Patients.” In Circulation, Vol. 126. LIPPINCOTT WILLIAMS & WILKINS, 2012.
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