Diseases, Conditions, Syndromes

Hydroxychloroquine plus macrolides no benefit in COVID-19

(HealthDay)—For patients with COVID-19 requiring hospitalization, there is no evidence of benefit for use of hydroxychloroquine or chloroquine with or without a macrolide, according to a study published online May 22 in ...

Cardiology

Diastolic dysfunction more dangerous than previously thought

Sudden cardiac death is a common cause of death in patients with reduced systolic ejection function. As part of a long-term observational study, MedUni Vienna researchers from the Division of Cardiology have now shown the ...

Diseases, Conditions, Syndromes

Hydroxychloroquine linked to increased risk of cardiac arrhythmias

Since the World Health Organization declared COVID-19 a Public Health Concern of Global Interest on January 30, more than one million have tested positive for the illness in the United States, and more than 62,000 have died. ...

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Cardiac arrhythmia

Cardiac arrhythmia (also dysrhythmia) is a term for any of a large and heterogeneous group of conditions in which there is abnormal electrical activity in the heart. The heart beat may be too fast or too slow, and may be regular or irregular.

Some arrhythmias are life-threatening medical emergencies that can result in cardiac arrest and sudden death. Others cause symptoms such as an abnormal awareness of heart beat (palpitations), and may be merely annoying. Still others may not be associated with any symptoms at all, but predispose toward potentially life-threatening stroke or embolus.

Some arrhythmias are very minor and can be regarded as normal variants. In fact, most people will sometimes feel their heart skip a beat, or give an occasional extra strong beat  neither of these is usually a cause for alarm.

The term sinus arrhythmia refers to a normal phenomenon of mild acceleration and slowing of the heart rate that occurs with breathing in and out. It is usually quite pronounced in children, and steadily decreases with age. This can also be present during meditation breathing exercises that involve deep inhaling and breath holding patterns.

This text uses material from Wikipedia, licensed under CC BY-SA