QTc Prolongation in COVID-19 Patients Using Chloroquine.
Cardiovasc Toxicol
; 21(4): 314-321, 2021 04.
Artículo
en Inglés
| MEDLINE | ID: covidwho-1002172
ABSTRACT
Chloroquine is used in the treatment of patients with COVID-19 infection, although there is no substantial evidence for a beneficial effect. Chloroquine is known to prolong the QRS and QTc interval on the ECG. To assess the effect of chloroquine on QRS and QTc intervals in COVID-19 patients, we included all inpatients treated with chloroquine for COVID-19 in the Spaarne Gasthuis (Haarlem/Hoofddorp, the Netherlands) and had an ECG performed both in the 72 h before and during or at least 48 h after treatment. We analyzed the (change in) QRS and QTc interval using the one-sample t-test. Of the 106 patients treated with chloroquine, 70 met the inclusion criteria. The average change in QRS interval was 6.0 ms (95% CI 3.3-8.7) and the average change in QTc interval was 32.6 ms (95% CI 24.9-40.2) corrected with the Bazett's formula and 38.1 ms (95% CI 30.4-45.9) corrected with the Fridericia's formula. In 19 of the 70 patients (27%), the QTc interval was above 500 ms after start of chloroquine treatment or the change in QTc interval was more than 60 ms. A heart rate above 90 bpm, renal dysfunction, and a QTc interval below 450 ms were risk factors for QTc interval prolongation. Chloroquine prolongs the QTc interval in a substantial number of patients, potentially causing rhythm disturbances. Since there is no substantial evidence for a beneficial effect of chloroquine, these results discourage its use in COVID-19 patients.
Palabras clave
Texto completo:
Disponible
Colección:
Bases de datos internacionales
Base de datos:
MEDLINE
Asunto principal:
Síndrome de QT Prolongado
/
Cloroquina
/
Electrocardiografía
/
COVID-19
/
Tratamiento Farmacológico de COVID-19
Tipo de estudio:
Estudio de cohorte
/
Estudio observacional
/
Estudio pronóstico
Límite:
Anciano
/
Femenino
/
Humanos
/
Masculino
/
Middle aged
País/Región como asunto:
Europa
Idioma:
Inglés
Revista:
Cardiovasc Toxicol
Asunto de la revista:
Angiología
/
Cardiología
/
Toxicología
Año:
2021
Tipo del documento:
Artículo
País de afiliación:
S12012-020-09621-2
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