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Written by: Zhu Haiqi
2021-03-21 18:27
Last update date: 2021-03-21 18:27
The new crown vaccination program started for nearly a month, and the most uncomfortable symptom was dizziness, and three of them had "vasovagal fainting."
A professor in the Department of Neurology said that when the blood flowing back to the heart decreases, the heart slows down its beating regulation and reduces the amount of blood pumped. This will cause low blood pressure to temporarily lose consciousness. It is described as a normal reflex action. The painful injection and blood-seeing related reactions are not considered to be related to the components of the vaccine.
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So far, the most common discomfort experienced by the vaccination program is dizziness, loss of consciousness or fainting. About 50 people have been diagnosed with "vasovagal fainting."
According to Zhang Dehui, clinical professor of the Department of Neurology, Department of Internal Medicine, Hong Kong University, the symptoms include that when blood returns to the heart slowly, the heart slows down the heart rate accordingly, reduces the heart pumping blood, and makes the blood return to the heart as soon as possible. It can also cause low blood pressure and inability to maintain sufficient blood supply, leading to fainting. Common causes include standing too long, holding the breath, panic, nervousness, and pain. It is more common in young women.
Zhang Dehui said that "vasovagal fainting" is a normal body reflex action.
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Zhang Dehui said that "vasovagal fainting" is a normal reflex action that restores the balance of blood circulation in the body. Although the human body will suddenly lose consciousness when related to the situation, it will wake up after lying down for a few minutes. Hold up, the more you hold up, the more dizzy you will be.” He believes that the vaccinators may feel very nervous and stimulate the nervous system because of the fear of injections and pain, which has nothing to do with the ingredients of the vaccine.
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