After the Beginning of Autumn, the impact of cold air becomes obvious. The temperature in most parts of China will drop by 8 to 10℃.
Cold weather can raise the risk of heart and circulatory problems, such as heart attacks and strokes. UK official statistics on additional deaths in winter suggest that the rise in risk starts once the average temperature drops below 12℃ (54℉).
Our heart and blood vessels are always trying to adapt to the environment, and to keep blood flowing so that different parts of body can get the oxygen and nutrients they need.
When feeling cold, our nervous system springs into action to stop our core body temperature dropping and to keep our vital organs working. The blood vessels narrow in skin, fingers and toes, so that less heat is lost. But this narrowing (called vasoconstriction) creates more pressure in the rest of the circulation, meaning the heart has to work harder to pump blood around the body, increasing heart rate and blood pressure.
This is a normal response to the cold days, but the extra strain can lead to heart symptoms for people who have an existing condition, especially during exercise. People with coronary heart disease often suffer angina pectoris (chest pain or discomfort) when they're in cold weather.
Besides cold temperatures, high winds, snow and rain also can steal body heat. Wind is especially dangerous, because it removes the layer of heated air from around body.
Similarly, dampness causes the body to lose heat faster than it would at the same temperature in drier conditions.
How to protect heart in cold days?
Keep warm. Be aware of the dangers of hypothermia. Dress in layers of warm clothing, which can trap air between layers to form a protective insulation. Wear a warm hat because much of body heat can be lost through head. Keep your hands and feet warm, too, as they tend to lose heat rapidly.
Do not drink alcoholic beverages before or immediately after outdoor sports. Alcohol may increase sensation of warmth and may cause people to underestimate the extra strain their body is under in the cold.
Consult a doctor. Before exercising (especially substantial increase over usual level of activity) in cold days, if you have medical concerns or feel symptoms of a medical condition (such as heart disease or diabetes), please do not hesitate to consult a doctor.
Knowing more about Cardiac Biomarkers
Cardiac biomarkers are substances (include enzymes, certain proteins and hormones) that are released into the blood when the heart is damaged or stressed.
Measurements of these markers are used to help diagnose and monitor heart diseases, including heart attack, heart failure, and arrhythmias. Tests for cardiac biomarkers can also be used to help predict the risk of suspected heart problems.
Commonly used cardiac biomarkers include Troponin I, Troponin T, and CK-MB. It's important to note that they are not diagnostic of themselves, but rather serve as markers of heart damage or disease.
Our ImmunDiagnosis instruments can give accurate cardiac results within 15 minutes for healthcare workers, vary from various platforms.