China News Service, December 29 (Reporter Chen Jing) At 11 o'clock on the 29th, the Shanghai Central Meteorological Observatory issued a yellow warning for gale and cold wave.
At noon, the rain arrived, followed by strong winds, and the quick freezing mode was turned on.
Cold weather can cause adverse effects on human respiratory system and cardiovascular system.
During an interview on the 29th, many medical experts here reminded the public to reduce morning exercises and outdoor activities, and to prevent low-temperature scalds while paying attention to cold and warmth.
Experts unanimously reminded the elderly to avoid going out when the cold wave hits.
Li Feng, director of the Department of Respiratory and Critical Care Medicine at the Shanghai Public Health Clinical Center affiliated to Fudan School, said in an interview on the 29th that in severe cold or drastically changing weather, lung defense functions are more likely to change. People with chronic respiratory diseases should Attention should be paid to prevent the cold from getting worse.
According to the weather forecast, there will be a "triple jump" in temperature today. By midnight, the minimum temperature in Shanghai will drop to -4°C.
Tomorrow morning the temperature will still be below zero degrees Celsius.
Li Feng told reporters: "The cold wave is a hurdle of respiratory diseases." Low temperature makes the local temperature of the respiratory tract very low, the function of the trachea to excrete bacteria is weakened, and the function of excreting foreign bodies is reduced, causing bacteria and viruses to grow in the respiratory tract.
Respiratory diseases such as colds, pneumonia, and asthma are prone to get onset or turn serious at this time.
The expert pointed out that it is very important for patients with chronic respiratory diseases to protect themselves from cold and warmth and protect their respiratory system from cold.
When symptoms such as fever, runny nose, cough, sputum, chest tightness, and wheezing occur, the patient should seek medical treatment and treatment in time to prevent further aggravation of the condition.
Cold air will cause the body's blood vessels to constrict, blood viscosity increases, coronary vascular resistance increases, and blood pressure, myocardial ischemia, and hypoxia are prone to occur.
Song He, an expert in cardiovascular field at Shanghai Yuanda Cardiothoracic Hospital, told reporters in an interview that cold weather would increase the probability of worsening cardiovascular disease.
He said that people's exercise is relatively reduced after cold weather. For those working in the office, blood circulation itself is relatively slow. Adding high-sugar, high-fat, and high-calorie foods can easily cause high blood sugar and abnormal blood lipids.
Song He told reporters that winter is the season of high influenza incidence, and catching cold will cause the body's resistance to decline. The attack of influenza virus will often cause bronchial and lung infections, which can induce heart failure or aggravate the original symptoms of heart failure.
Song He pointed out that patients with hypertension and cardiovascular disease should take precautions in extremely cold weather, take measures to keep out the cold, and minimize morning exercises and outdoor activities.
Patients with high blood pressure should measure their blood pressure every day. If blood pressure fluctuations or instability are found, consult a doctor as soon as possible to control blood pressure early and effectively.
Li Feng reminded the public to add and remove clothing in time according to weather changes, cover their necks and chests with scarves, gauzes, etc., and wear masks when going out to reduce the irritation of cold air to the respiratory tract; reduce going out on rainy days to avoid getting cold from the rain; allergic physique , Asthma patients can regularly inhale bronchodilators and glucocorticoids to prevent acute exacerbations.
Liu Jun, director of the Department of Neurology, Ruijin Hospital Affiliated to Shanghai Jiaotong University School of Medicine, told reporters that when the cold wave comes, you should pay attention to head protection, drink more warm water, increase body fluids, eat too much, and avoid prolonged outdoor activities. Morning exercises are recommended. The person can temporarily cancel outdoor morning exercises in the near future.
In this regard, Li Feng also said that for those who like to exercise and exercise, winter is not suitable for medium and high-intensity exercise. Patients with basic cardiopulmonary diseases may wish to change "morning exercise" to "afternoon exercise", preferably indoor exercise.
Bian Liuguan, director of the Department of Neurosurgery of Ruijin Hospital, said that the cold wave may significantly increase the incidence of cerebrovascular accidents, and reminded the elderly to slow down and avoid going out as much as possible.
In the cold winter season, many people use hot water bottles and warm babies to keep warm, and low-temperature scalds are not uncommon.
Liu Yan, director of the Department of Burns and Plastic Surgery at Ruijin Hospital, reminded the public to prevent low-temperature scalds when keeping warm.
The expert said that due to the deep wounds of low-temperature scalds, it may take a long time to change the dressing.
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