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Experts on Wednesday issued a warning for people who have been affected by Covid-19 during the Corona epidemic. People who have recovered from Covid and are showing symptoms like persistent cough, hoarseness in voice and difficulty in clearing throat frequently may be at risk of heart attack or stroke. Researchers at Southampton University reported in their research on this subject that patients with such symptoms have shown a decrease in baroreflex sensitivity (a measurement that detects changes in a person's heart rate due to changes in blood pressure).
The team of researchers said that the interpretation of the research findings suggests that the vagus nerve (which controls the autonomic nervous system) prioritizes airway protection over less important functions such as blood pressure regulation. Reza Nourei, Professor of Laryngology and Clinical Informatics at the University of Southampton, said on this matter that our immediate survival depends on the throat being able to separate the passage of air and food whenever we swallow something.
How does the danger increase?
Reza Nourei further said that the throat does this using delicate reflexes, but when these reflexes are weakened due to a viral infection like COVID-19, this balance is disturbed, leading to symptoms like feeling a lump in the throat, clearing the throat and coughing. Research published in JAMA Otolaryngology explains this topic in detail. It says that the baroreflex in particular does not work very well in the brain of patients with an infected throat.
risk of heart attack and stroke
According to Reza Nourei, this disease can affect our longevity in the coming years. Patients with low baroreflex function will be most likely to have a heart attack or stroke. This study from the University of Southampton included 23 patients admitted for nose, ear and throat (ENT) surgery. These patients had symptoms such as choking, chronic cough and difficulty swallowing. The heart rate, blood pressure and baroreflex sensitivity of these patients were compared with 30 patients suffering from digestive disease admitted to gastroenterology.