After autumn, the heart has & quot;three fears", each of which may & quot;take a life", the elderly should pay particular attention to

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In August, although it is already autumn, but most of China is still in the summer heat, some hot weather easily triggered diseases, such as brain infarction, heart attack, coronary heart disease, etc., still need us to be more careful.

We often say that in the summer to mend the heart, and to be particularly careful about cardiovascular disease, why? Because in the hot weather, the heart has three "fears".

1 afraid of high temperature

A study shows that the body temperature is higher than 38.5 degrees for more than 1 hour, the death rate is 18%; within 1 hour to control the 38.5 degrees or less, the death rate is 5%.

Why does this happen?

This is because, when the temperature is high, blood vessels are stretched, and the body will accelerate sweating. At this time, the heart pumps blood not only to supply the daily needs, but also to provide additional sweating required for heat dissipation, the heart's burden will naturally increase.

Generally speaking, 28 ℃ is a more suitable temperature for the elderly, if the temperature changes too much, it is easy to cause serious heart disease.

2 Fear of dehydration

Blood is composed of blood plasma and blood cells, and 90% of the plasma is water. High temperature weather sweating more, if not timely hydration, it is easy to lead to blood sticky.

When the blood becomes less fluid, the flow rate will be slow when flowing through the blood vessel plaque, and the possibility of hanging wall or long thrombus will become higher, and the risk of plaque rupture will increase.

If the plaque ruptures, more platelets will be trapped in the ruptured holes, and these trapped platelets will cause a large number of platelets to accumulate and grow larger and larger, finally blocking the blood vessels.

Therefore, the lack of water on the cardiovascular is not good for the elderly is undoubtedly worse.

But more water is not good, if the heart function is not good for the elderly, a large intake of water will lead to a sharp increase in blood volume, increasing the burden on the heart, thus aggravating heart failure. And the heart in the process of hard contraction, the possibility of plaque rupture will also increase.

In addition, a large amount of water will also dilute electrolytes, potassium, magnesium, calcium dilution to a certain degree plus heart ischemia, it will lead to malignant arrhythmias.

So hot weather to slowly drink water, a small number of times, when you go out, it is best to take a bottle of water, from time to time a few sips.

3 afraid of humidity

Humid muggy low-pressure weather, the partial pressure of oxygen in the air drops, the partial pressure of oxygen in the alveoli and blood will also drop. The human body will involuntarily speed up the breathing rate, which in turn leads to a faster heart rate.

The low pressure of hot and humid air also makes people depressed and irritable, leading to increased secretion of adrenal hormones, which increases heart rate and blood pressure.

In the case of increased heart rate, increased oxygen consumption, accelerated blood flow and poor vascularity, angina and even myocardial infarction can be induced.

After autumn, the heart has & quot;three fears

Today's summary

The heart is afraid of high temperature, lack of water and humidity. We should pay attention to avoid these risk factors in our daily life and live this period of high temperature and humidity smoothly.

Today's interactive topic

Although it is already autumn, but the hot weather is still a threat, do you have any good ways to deal with it? Feel free to leave your comments and tell us what you think.

(I am a doctor official microblogging)