Cold weather raises the risks of stroke, say doctors

The cold weather which has hit the northern region with temperatures of 8 to 10 Celsius degree has reportedly been accompanied by a surge in the number of people suffering from strokes.

Cold weather raises the risks of stroke, say doctors
An elderly man is treated at the National Geriatric Hospital. The cold snap has been blamed for an escalation in the number of senior citizens hospitalised. Photo nhandan.com.vn

Dao Viet Phuong, from Bach Mai Hospital’s Stroke Centre, said the centre has received 2,000 stroke patients since it was established in November.

More people have recently also been taken to the National Geriatric Hospital (NGH) and the 108 Military Hospital.

Nguyen Danh Cuong, deputy head of the Emergency and Stroke Department of the NGH, said the cold snap was the reason for an escalation in the number of senior citizens hospitalised for emergency treatment.

The hospital admitted 50-60 patients a day compared to 30-40 on normal days. Most of them are serious cases with blood pressure problems, heart diseases and strokes; some even need a ventilator, he said.

"As the organs of the elderly are ageing, they are more susceptible to respiratory diseases such as sore throats or bronchitis than young people. A sudden change in temperatures can lead to a higher risk of a stroke,” he told Sức khoẻ và đời sống (Health and Life) newspaper.

Hospital admission rates for strokes have also reportedly increased in medical centres in northern provinces like Hoa Binh, Quang Ninh and Lao Cai.

Ta Huy Kien from Hoa Binh General Hospital said each day the hospital received 7-8 stroke patients during cold snaps.

The number of patients seeking treatment for the disease hit nearly 240 from December 1 last year to January 10, he said, adding that strokes often occurred in people aged from 50 years old with underlying health conditions including diabetes and high blood pressure.

According to Phuong, the cold weather is a factor that heightens the risk of strokes.

When temperatures go down blood vessels in the skin constrict so the body doesn't waste a lot of heat, which can raise blood pressure. Many patients are hospitalised with a paroxysmal 130/80 mm Hg blood pressure.

High blood pressure is the cause of 80 per cent of strokes in Vietnam.

Scientists have discovered a reduction of every two mmHg in blood pressure results in a 10 per cent reduction in deaths from stroke.

If the blood pressure is maintained at the optimal level of 120/80 mmHg, it will prevent stroke complications in most cases.

Long-term hypertension will increase atherosclerosis and formation of blood clots which easily causing cerebral infarction. In addition, high blood pressure also increases the pressure on brain arteries, causing blood vessels to rupture, causing brain bleeding, Phuong said

Cold weather also makes many people tend to eat more salty and more fatty foods while reducing exercise.

 

“It is dangerous that when it is cold, patients with hypertension are too lazy to take medicine or run out of medicine but they are afraid to go to see the doctor again, making the blood pressure uncontrollable,” he said.

It is estimated an annual incidence of strokes in Vietnam at 200,000 and the figure increases by about 2 per cent every year. However, people don’t have knowledge about the disease, measures to prevent it or first aid, said Phuong.

He said one of the most important criteria for reducing complications in stroke patients was to go to the hospital early.

“As soon as one of your relatives has such symptoms as hemiplegia, distorted mouth or slurred speech, you should immediately call an ambulance and bring them to the nearest hospital.”

“We always want patients to arrive at the hospital within three hours from the time their symptoms appear but it is extremely difficult. There are only a few cases in Hanoi when this happens while the rest are mostly late.

"Many people are hospitalised after 2-3 days. At that time, treatment is very difficult and the ability to recover is limited," he said.

For patients with cerebral haemorrhage, if they come to the hospital early, their blood pressure will be controlled, greatly reducing after-stroke risks, according to Phuong. 

Preventive measures

In related news, the Ministry of Health has sent an urgent dispatch to departments of health in cities and provinces in the northern and central regions ordering preventive measures to protect people’s health in response to the cold snaps.

They were asked to guide people on how to keep warm outside and in closed rooms.

Health facilities were also required to ensure there was enough medicine for treatment and enhance control over diseases including blood pressure, cardiovascular and respiratory diseases, especially in the elderly and children.

The National Centre for Hydro-Meteorological Forecasting said that temperatures in the north will continue dropping in the next few days. 

Cold air hit the northern delta area on Tuesday with the lowest temperature of 9-12 degrees Celsius and 5-8 degrees Celsius in mountainous areas. 

Meteorological experts have warned that snowfall is predicted to occur in the high mountain areas of Lao Cai and Lai Chau provinces in the next few days.  VNS

Lack of post-stroke rehabilitation facilities affects patient recovery

Lack of post-stroke rehabilitation facilities affects patient recovery

A shortage of stroke rehabilitation facilities nationwide is affecting recovery for many patients, doctors have said.  

Another strong cold spell chills Hanoi and northern Vietnam

Another strong cold spell chills Hanoi and northern Vietnam

Hanoi residents are advised to keep warm to protect their health in the chilly cold weather.

 
 

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