Is fainting in the heat due to cardiovascular disease?

In the summer, high temperatures have a higher than normal risk of causing fainting, difficulty breathing or other cardiovascular symptoms.

Doctor Pham Thu Thuy, Department of Cardiology and Interventional Cardiology, Hanoi French Hospital, said high temperatures can cause blood pressure to suddenly drop, the autonomic nervous system dysfunction, and the body to quickly fatigue, excessive sweating. Especially rapid drop in blood pressure while playing sports or right after going to the toilet, leading to fainting.

People who work long hours under the sun, exercise with high intensity… are susceptible to fainting due to increased sweating, decreased water volume in blood vessels, causing low blood pressure and reduced blood flow to the brain. when standing up. Fainting due to high temperature accompanied by other symptoms such as dizziness, vertigo, headache, nausea, vomiting, diarrhea, little urination, concentrated urine…

“Patients with underlying cardiovascular disease are at higher risk, which can cause difficulty breathing, fainting or other cardiovascular symptoms during the hot season. On the contrary, for people without underlying disease, when examined normally, it will be difficult to detect the cause or special disease,” said Dr. Thuy.

And Dr. Alain Patrice Lebon, Department of Cardiology and Interventional Cardiology, said that cardiovascular-related diseases such as arrhythmia, coronary artery disease, heart valve abnormalities,… or diseases Pulmonary problems such as pulmonary embolism are characterized by fainting. In case the patient has a history of these diseases and has sudden, prolonged fainting, if not treated promptly, it can lead to other more dangerous complications, even life-threatening. network.

Fainting is also considered a serious symptom in cases of intense exercise; feeling short of breath, chest pain, unusually fast heartbeat, palpitations; fainting due to loss of blood; or fainting occurs without warning, even when you are lying down.

Doctor Pham Thu Thuy examines a patient. Image: Hospital provided

Experts recommend that patients can detect fainting early if they feel unwell, tired, dizzy, dizzy, or light-headed. When the patient suddenly faints, relatives do not try to move the patient, lay them on the spot with their feet raised about 30 cm high and quickly call an ambulance. In severe cases, delay can lead to death.

To prevent this, people need to ensure they provide enough water for their bodies because dehydration is one of the causes of fainting. Avoid going out or working for long periods of time when the outdoor temperature is high. Use air conditioning or fans to prevent excessive sweating. Develop a reasonable exercise plan from time to time, avoid high-intensity exercise during intense heat, and ensure adequate hydration for the body immediately after exercise.

Low blood pressure can easily lead to fainting, so maintaining stable blood pressure is very important. Everyone should add foods that help stabilize blood pressure to a reasonable diet.

Fainting is usually not too dangerous. However, if you faint, be careful and go to a specialized hospital for examination and screening for risks if it is caused by cardiovascular disease. Absolutely do not use any medication for treatment without a doctor’s prescription.

By Editor

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