The study found a striking link between influenza and fatal heart disease
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according to a research report published in the Journal of the American Heart Association, Despite the high mortality and complication rates of influenza, the annual vaccination rate of Americans with heart disease is still very low
it is reported that the influenza vaccination rate of American adults under the age of 65 with heart disease is less than 50%, while that of the elderly with heart disease is 80%
Dr. Priyanka Bhugra, an internal medicine expert of the Houston Methodist Association and lead author of the jaha article, pointed out: “It seems that young Americans with high-risk diseases do not get the same memo as their elderly about the importance of influenza vaccination. This is dangerous, considering that people with heart disease are particularly vulnerable to influenza related heart complications, whether they have reached retirement age or not.”
it is well known that influenza can cause obvious respiratory symptoms, such as pneumonia, bronchitis and bacterial infection in the lungs. The impact of the virus on the heart has always been difficult to analyze, partly because many patients already have a known tendency to heart events, and partly because heart events often occur a few weeks after the onset of influenza.
but recent studies have shown this: P>
cardiovascular disease mortality and influenza prevalence increased at the same time; the risk of heart attack within one week after influenza infection was six times higher than that of the year before or after the year; in a study, 336 thousand patients hospitalization due to influenza were investigated, 11.5% of them experienced serious cardiac events, and the other 90 thousand patients. According to the survey of influenza infected persons confirmed by the laboratory, 11.7% of them experienced acute cardiovascular events; another study found that 1 / 8 of influenza patients, or 12.5%, experienced cardiovascular events at admission, of which 31% needed intensive care and 7% died due to the event. The great pressure caused by influenza on the heart and vascular system is related to the body’s inflammatory response to infection Off.
when the body’s “first responder” –White blood cells and what they produce to protect the body – inflammation occurs when they gather in an area and start working against infection, bacteria or viruses. When sick, they usually feel swelling, tenderness, pain, weakness and sometimes redness from joints, muscles and lymph nodes, and elevated body temperature.
increased activity also causes some degree of blockage in the body This can lead to thrombosis, elevated blood pressure, and even swelling or scarring inside the heart. The increased pressure makes plaques in the arteries more likely to rupture, block, and cut off oxygen from the heart or brain – leading to heart attack or stroke, respectively.
in addition, non cardiac complications caused by viral diseases, including pneumonia and respiratory failure, can worsen heart failure symptoms or arrhythmias More serious.
in short, the additional pressure on the cardiovascular system may overburden the already weak myocardium.
as the influenza virus continues to mutate, scientists change the vaccine every year to adapt to the possible epidemic virus chain. On average, it can effectively prevent infection 40% of the time. Although this may not sound very good – especially high Compared with the effective mRNA covid-19 vaccine – but it is enough to greatly reduce the risk of serious diseases in most people.
recently, studies have been able to show that the vaccine can not only effectively protect the general population and the most vulnerable age group (over 65 and under 2 years old) It is protected from severe influenza and has a protective effect on cardiovascular disease mortality, especially in high-risk groups.
some recent findings are:
vaccinated adults are 37% less likely to be hospitalized due to influenza and 82% less likely to be admitted to intensive care unit due to influenza. Among those hospitalized due to influenza, vaccinated people are sent to hospital The likelihood of admission to the intensive care unit was reduced by 59%. Vaccinated patients spent four days less in the intensive care unit than unvaccinated patients; if patients had influenza, the association between vaccination and the risk of cardiovascular events was lower (2.9% vs 4.7%) Among high-risk patients with more active coronary artery disease, vaccination was associated with fairly good results; hospitalized patients with acute coronary syndrome were randomly assigned to receive or not receive influenza vaccination before discharge. The incidence of major cardiovascular events in the vaccine group was lower than that in the control group (9.5% vs 19%)
in view of the benefits of influenza vaccination and the risks of influenza infection in patients with cardiovascular diseases, CDC and many other international associations strongly recommend that patients with cardiovascular diseases be vaccinated with influenza every year.
clinicians should ensure a high vaccination rate of influenza vaccine, especially those with potential chronic diseases, to prevent influenza related acute diseases Vascular events.
unfortunately, many heart patients visit their cardiologist more frequently than their primary care doctor, and heart clinics usually do not provide influenza vaccination. Until then, cardiologists and primary care doctors have the responsibility to communicate the increased risk and the importance of vaccination to their patients.
for those with For patients with heart disease, two important steps can be taken to reduce the risk:
ensure that influenza vaccines are indeed obtained from local pharmacies or primary health care providers. The earlier vaccination, the better protection, because we never know when the virus begins to spread; ensure that they are taking drugs and follow the recommended diet, exercise and stress reduction plans. If they are worried If your heart condition is stable, but you eventually get the flu, you may experience fewer and less serious complications than if your heart condition is mismanaged