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Breathlessness in long Covid patients may signal heart problems

London, Dec 10, 2021- Covid-19 patients who continue to be short of breath during physical activity one year after recovering from the infection may have suffered heart damage, according to a small study.

There is increasing evidence of cardiovascular complications due to Covid-19 and of long-lasting symptoms such as dyspnoea, shortness of breath, known as long Covid.

The team investigated whether subclinical heart abnormalities were more common in long Covid patients with dyspnoea, thereby potentially explaining the reason for their symptoms.

“Our study shows that more than a third of Covid-19 patients with no history of heart or lung disease had persistent dyspnoea on effort a year after discharge from hospital,” said Dr. Maria-Luiza Luchian of University Hospital Brussels, Belgium.

“The findings could help to explain why some patients with long Covid still experience breathlessness one year later and indicate that it might be linked to a decrease in heart performance,” she added.

The study included 66 patients without previous heart or lung disease who were hospitalised with Covid-19 between March and April 2020.

At one-year after hospital discharge, spirometry together with chest computed tomography were used to assess lung function and possible sequela of Covid-19. Cardiac ultrasound was performed to examine heart function and included a new imaging technique called myocardial work which provides more precise information on heart function than previous methods.

The average age of participants was 50 years and 67 per cent were men. In one year, 23 patients (35 per cent) had shortness of breath during effort.

The researchers examined the association between imaging measures of heart function and shortness of breath at one year after adjusting for age and gender.

The analysis showed that abnormal heart function was independently and significantly associated with persistent dyspnoea.

Cardiac imaging revealed poorer heart performance in patients with versus without dyspnoea at one year after hospitalisation due to Covid-19.

The research was presented at the EuroEcho 2021, a scientific congress of the European Society of Cardiology (ESC).  (Agency)

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