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Published online: 2021-03-10
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Monitoring of QTc interval in patients with COVID-19. First experience with a portable EKG-recording device.

María Abellas-Sequeiros, Cristina Lozano-Granero, Cristina García-Sebastián, Eduardo Franco-Díez, Antonio Hernández-Madrid, Javier Moreno-Planas, Jaime Masjuan-Vallejo, Marcelo Sanmartín-Fernández, Jose Luis Zamorano-Gómez
DOI: 10.5603/CJ.a2021.0033
Pubmed: 33843037

open access

Ahead of print
Research letter
Published online: 2021-03-10


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Not available
Get Citation


SARS-CoV 2, COVID-19, QTc interval, azithromycin, hydroxychloroquine, lopinavir/ritonavir.

About this article

Monitoring of QTc interval in patients with COVID-19. First experience with a portable EKG-recording device.


Cardiology Journal


Ahead of print

Article type

Research Letter

Published online







QTc interval


María Abellas-Sequeiros
Cristina Lozano-Granero
Cristina García-Sebastián
Eduardo Franco-Díez
Antonio Hernández-Madrid
Javier Moreno-Planas
Jaime Masjuan-Vallejo
Marcelo Sanmartín-Fernández
Jose Luis Zamorano-Gómez

References (7)
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  2. Chen CY, Wang FL, Lin CC. Chronic hydroxychloroquine use associated with QT prolongation and refractory ventricular arrhythmia. Clin Toxicol (Phila). 2006; 44(2): 173–175.
  3. Anson B, Weaver J, Ackerman M, et al. Blockade of HERG channels by HIV protease inhibitors. Lancet. 2005; 365(9460): 682–686.
  4. Straus SM, Kors JA, De Bruin ML, et al. Prolonged QTc interval and risk of sudden cardiac death in a population of older adults. J Am Coll Cardiol. 2006; 47(2): 362–367.
  5. Chang D, Saleh M, Gabriels J, et al. Inpatient use of ambulatory telemetry monitors for COVID-19 patients treated with hydroxychloroquine and/or azithromycin. J Am Coll Cardiol. 2020; 75(23): 2992–2993.
  6. Guerrero LR, Ongay AG, Álvarez ÁC, et al. Protocolo de manejo hospitalario de alteraciones electrocardiográficas en pacientes con COVID-19 con un sistema portátil vinculado a smartphone. REC: CardioClinics. 2020; 55(3): 192–195.
  7. Strik M, Caillol T, Ramirez FD, et al. Validating QT-interval measurement using the apple watch ECG to enable remote monitoring during the COVID-19 pandemic. Circulation. 2020; 142(4): 416–418.

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