Primary hypothyroidism with an episode of ventricular tachycardia in a patient with COVID-19

<jats:title>Abstract</jats:title>
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<jats:title>Rationale:</jats:title>
<jats:p>Coronavirus disease 2019 (COVID-19) is a systemic disease with major clinical manifestations in the respiratory system. However, thyroid involvement has also been reported. We present a case of hypothyroidism with ventricular tachycardia following diagnosis with COVID-19.</jats:p>
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<jats:title>Patient concerns:</jats:title>
<jats:p>A 77-year-old man was admitted to the isolation ward due to COVID-19. After respiratory support and medical treatment, the patient was successfully weaned off the ventilator. However, an episode of short-run ventricular tachycardia was detected, and primary hypothyroidism was also diagnosed.</jats:p>
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<jats:title>Diagnosis:</jats:title>
<jats:p>Ventricular tachycardia was detected by electrocardiography.</jats:p>
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<jats:title>Interventions:</jats:title>
<jats:p>Intravenous amiodarone administration and oral levothyroxine replacement.</jats:p>
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<jats:title>Outcomes:</jats:title>
<jats:p>No arrhythmia detected following treatment.</jats:p>
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<jats:title>Lessons:</jats:title>
<jats:p>Awareness of the association between hypothyroidism and COVID-19 is important in preventing possible complications.</jats:p>
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