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Severe COVID-19 patients 16 times more likely to develop ventricular tachycardia within 6 months

Written By : Dr. Kamal Kant Kohli Published On 2023-04-19T10:30:26+05:30  |  Updated On 21 April 2023 11:25 AM IST
Severe COVID-19 patients 16 times more likely to develop ventricular tachycardia within 6 months
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Researchers have found in a new research that Patients with severe COVID-19 requiring mechanical ventilation are 16 times more likely to develop ventricular tachycardia within six months compared to their peers without severe infection.

The research was presented at EHRA 2023, a scientific congress of the European Society of Cardiology (ESC).1 Risks of other heart rhythm disorders were also elevated.

“The actual likelihood of developing ventricular tachycardia or other arrhythmias after severe COVID-19 is low for the individual patient, but much higher than in those without severe infection,” said study author Dr. Marcus Stahlberg of the Karolinska Institute, Stockholm, Sweden.

The objective of this study was to investigate the long-term risk of arrhythmias after discharge from an intensive care unit (ICU) for COVID-19 requiring mechanical ventilation. The researchers used the Swedish ICU register to identify all COVID-19 patients treated with mechanical ventilation and discharged alive from an ICU between March 2020 and June 2021. Each patient was matched by age, sex and district of residence with up to 10 people in the general population. Multiple compulsory national registries were used to record new diagnoses of arrhythmias after discharge from the ICU.

The primary outcome was hospitalisation with ventricular tachycardia, atrial fibrillation, other tachyarrhythmias, or bradycardia/pacemaker implantation. Ventricular tachycardia is a potentially life-threatening heart rhythm disturbance that occurs when the ventricle beats too fast to pump properly causing the body to receive insufficient oxygenated blood. Atrial fibrillation is an irregular and fast heartbeat that causes shortness of breath and raises the risk of stroke. “Other tachyarrhythmias” refers to a fast heartbeat not caused by atrial fibrillation. “Bradycardia or pacemaker implantation” is a combined endpoint of slow heart rate or need for a pacemaker due to slow heart rate.

The researchers analysed the risk of developing each arrhythmia in severe COVID-19 patients, compared to those without severe COVID-19. The analyses were adjusted for factors linked with the likelihood of heart rhythm disorders including age, sex, high blood pressure, diabetes, high blood lipids, chronic kidney disease and socioeconomic status (education level, marital status and income).

The study included 3,023 patients with severe COVID-19 who received mechanical ventilation at a Swedish ICU and 28,463 individuals from the general population who had not been in an ICU with COVID-19 requiring mechanical ventilation (control group). The average age of participants was 62 years and 30% were women. “Higher age and male sex are two important risk factors for getting severely sick with COVID-19 and this was reflected in our study participants,” said Dr. Stahlberg.

The average follow up was nine months. In patients who had severe COVID-19, the incidence rates per 1,000 person-years of ventricular tachycardia, atrial fibrillation, other tachyarrhythmias, and bradycardia/pacemaker implantation were 15.4, 78.4, 99.3 and 8.5, respectively. Corresponding incidence rates in the control group were 0.9, 6.0, 6.7 and 0.9, respectively.

Compared to the control group, patients who had severe COVID-19 requiring mechanical ventilation had a 16-fold risk of ventricular tachycardia, 13-fold risk of atrial fibrillation, 14-fold risk of other tachyarrhythmias, and 9-fold risk of bradycardia/pacemaker implantation.

Dr. Stahlberg said: “COVID-19 patients who need mechanical ventilation often have other conditions and adding a heart rhythm disorder may lead to worsened health. These patients should seek medical attention if they develop palpitations or irregular heartbeats after hospital discharge so they can be evaluated for possible arrhythmias.”

He concluded: “An increased risk of arrhythmias following COVID-19 has also been reported previously in the bulk of COVID-19 patients not requiring ICU treatment.2 Together with our new data and taking into the account that we globally have 650 million reported COVID-19 cases,3 hospital systems should prepare for an increase in patients requiring management for new onset arrhythmias.”

Reference:

Severe COVID-19 linked with 16-fold risk of life-threatening heart rhythm within 6 months, European Society of Cardiology, Meeting, EHRA 2023.

European Society of CardiologyCOVID-19arrhythmiashigh blood pressure
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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