Related Experiment Video
Updated: Dec 11, 2025

Microelectrode Array Recording of Sinoatrial Node Firing Rate to Identify Intrinsic Cardiac Pacemaking Defects in Mice
Published on: July 5, 2021
Bradyarrhythmias in patients with COVID-19: A case series
Mohit D Gupta1, Arman Qamar2, Girish Mp1
1G.B. Pant Institute of Post Graduate Medical Education and Research, New Delhi, India.
Insights
This case series highlights cardiac complications in COVID-19 patients, revealing bradyarrhythmias like heart block and sinus node dysfunction. These findings underscore the need for monitoring heart rhythm in coronavirus disease patients.
Area of Science:
- Cardiology
- Infectious Diseases
- Electrophysiology
Background:
- The cardiac manifestations of novel coronavirus disease (COVID-19) are diverse, yet understanding of bradyarrhythmias in affected individuals remains limited.
- This study investigates the prevalence, clinical characteristics, and outcomes of bradyarrhythmias in patients diagnosed with COVID-19.
Discussion:
- The case series details five patients with complete heart block requiring medical intervention due to COVID-19.
- Two patients presented with sinus node dysfunction, another significant bradyarrhythmia associated with the infection.
Key Insights:
- COVID-19 can lead to severe cardiac rhythm disturbances, including complete heart block.
- Sinus node dysfunction is also observed in patients with COVID-19, indicating a broader impact on cardiac electrical activity.
- Early recognition and management of bradyarrhythmias are crucial for improving outcomes in COVID-19 patients.
Outlook:
- Further research is warranted to elucidate the mechanisms underlying COVID-19-associated bradyarrhythmias.
- Prospective studies are needed to establish standardized protocols for the diagnosis and management of these cardiac complications.
- Investigating long-term cardiac outcomes in COVID-19 survivors with pre-existing or newly developed bradyarrhythmias is essential.
Abstract:
Novel coronavirus disease (COVID-19) can have variety of cardiac manifestations; however, less is known about the prevalence, clinical characteristics and outcomes of bradyarrhythmias in patients with COVID-19. In the present case series of bradyarrhythmia in patients with COVID-19, we report complete heart block requiring intervention in 5 patients and sinus node dysfunction in 2 patients.
More Related Videos
Related Concept Videos
Dysrhythmias IV: Characteristics of Bradyarrhythmias
Decreased pulse rate
There are specific risk factors that can elevate the likelihood of developing bradycardia. Advanced age is a significant factor, with...
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism,...
Mechanism of Cardiac Arrhythmias
Disturbances in Heart Rhythm
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
Dysrhythmias II: Classification of Tachyarrhythmias

