Have you ever had the feeling of running out of air in the middle of the night? So much so that you wake up showing shortness of breath, even though you were sleeping? If so, it’s probably time to discuss it with your doctor. Because what lies behind shortness of breath at rest can be serious.
Nocturnal dyspnea, possible sign of heart failure
Waking up in the middle of the night with a feeling of suffocation or intense shortness of breath is never trivial. This phenomenon corresponds to what doctors call paroxysmal nocturnal dyspnea.
This is a well-known symptom of heart failure, especially when it affects the left heart.
This sign can occur in people who did not yet know they were sick. It often appears gradually, sometimes several weeks or months before diagnosis. But it is therefore important to spot it.
Heart failure: a disease often misunderstood
Contrary to popular belief, heart failure does not mean that the heart stops. As Dr. Gérald Kierzek explains, this is a situation where the heart is no longer able to pump blood as efficiently as it should.
This failure may be linked to a weakening of the heart muscle or excessive stiffness. “The disease is chronic and progressive, but it can be stabilized for a long time when the diagnosis is made early enough and the treatment is appropriate. however reassures the emergency doctor.
Why does shortness of breath occur mostly at night?
Being out of breath at night is no accident. The lying position plays a key role. “At night, when you are lying down, the blood that stagnates in the legs rises more easily to the thorax. In a person whose left ventricle is functioning poorly, this excess blood cannot be properly evacuated” explains Dr. Kierzek.
The pressure then increases in the pulmonary vessels, leading to progressive congestion of the lungs. “This causes a sudden feeling of lack of air, sometimes accompanied by a cough, chest tightness, or even foamy sputum in the most serious forms”. In this case it is acute lung edema, a medical emergency.
Suggestive respiratory signs
Nocturnal shortness of breath is often part of a set of characteristic respiratory symptoms:
- Unusual shortness of breath on exercise, then with increasingly weak efforts;
- Respiratory discomfort which may appear even at rest;
- Difficulty lying flat, requiring you to sleep with several pillows;
- Nocturnal attacks of shortness of breath requiring sitting or standing to breathe.
“These signs should encourage you to consult, even if they seem moderate at first” supports our expert.
But other signals also reinforce suspicion. Heart failure does not only manifest itself through respiratory problems. Other symptoms may appear at the same time:
- Swelling of the ankles, legs or sometimes the abdomen;
- Rapid weight gain linked to water retention;
- Unusual fatigue, reduced exercise tolerance;
- Palpitations, rapid heart rate;
- More frequent nighttime urination, feeling of bloating.
Taken in isolation, these signs may seem trivial. Together, they become much more expressive.
When should you consult urgently?
But when should you go for a consultation?
“A sudden nocturnal awakening with severe breathing difficulty should be considered as a alarm signalespecially if it is associated with edema, rapid weight gain, chest pain or malaise.”
In this context, rapid medical advice is essential.
“If the shortness of breath is intense or worsens, you must contact emergency services immediately”. The diagnosis is then based on clinical examination, echocardiography and other complementary tests, in order to confirm the condition and initiate appropriate treatment.
Recognizing this nocturnal sign in time can make all the difference. Sometimes the body warns discreetly, but you still have to know how to listen to it.