Sudden death related to heart rate

Quasi-imprevisible and relentless, SIDS is a sudden onset of often unsuspected heart problems. Not to be confused with the sudden infant death syndrome, these ‘accidents’ kill 40,000 people each year. But the evolution of the heart rate may help identify patients at risk.

The sudden death of the adult is, as its name suggests, an unexpected death in apparently healthy person and occurring in the minutes following the onset of the first symptoms. Little-known, it appears only rarely in front of the media scene. However the death of footballer Marc-Vivien Foé marked the spirits.

heart rate

The terrible results of sudden death
In France, the sudden death represents 5-10% of the number of deaths and nearly half of death from cardiac cause. Each year, nearly 40,000 adults die from sudden death. It is often the first (and unfortunately the last) manifestation of unsuspected heart problems. The unexpected occurrence of a death is less than an hour after the start of symptoms suggestive of ischemia (lack of irrigation) of the heart muscle (pain in the chest, shortness of breath…).

One of the challenges is to identify more vulnerable. Several risk factors are identifiable today including the overweight and obesity,high blood pressure, cholesterol and smoking. In each of these settings, it is possible to intervene by promoting good nutrition, physical exercise, smoking cessation and drug treatment. But French Inserm researchers come to identify a new risk factor for sudden death linked to heart rate1.

Keep the good heart rate
The team of Professor Xavier Jouven has highlighted the risk of sudden death was directly linked to the heart rate, or rather its modifications during and after exercise. The researchers collected 5 713 records of men aged 42 to 53. Free of any troubled heart, all had undergone a stress test standardized between 1967 and 1972. Exercise is supposed to replicate the efforts of everyday life while pedaling on a bicycle ergonomic or walking on a treadmill.

An electrocardiogram, blood pressure and responses to see how the heart reacts2.
After 23 years of follow-up, 81 patients have died a sudden death. By carefully studying the results of their stress test, it turns that they possessed a small difference between the level of maximum heart rate and resting heart rate level. The results attest as well as:

Men whose heart rate was more than 75 beats at rest have four times the risk of sudden death; At the effort, an increase in the heart rate less than 89 beats per minute multiplied by four the risk of sudden death.

A decrease of less than 25 beats per minute after the effort does more that double the risk of sudden death.An inadequate response of the heart rate during exercise is thus directly related to the risk of sudden death, but not to the other causes of cardiac death (and in particular the death by myocardial infarction).

Yet an argument to wear its sneakers!
What are the medical consequences can have this discovery? In the same way that the voltage or cholesterol levels are checked regularly, one can imagine that tomorrow, the use of a stress test allows identification of persons at risk of sudden death. An option which, according to the researchers, “deserves to be studied”. Furthermore, these results argue for a hygiene of life.

For a heart without tobacco

Five million deaths are attributable to smoking each year worldwide, including 35% by cardiovascular disease is two times more than by lung cancer. Active or passive smoking, all are affected by this danger.

This year marks the gradual implementation of the law banning smoking in public places. On this occasion, the French Federation of Cardiology (FFC) and the French society of Cardiology (SFC) are committed in 2007 for a “heart without tobacco”.

heart without tobacco

No small risk tobacco
Smoking is the second most important risk of myocardial infarction, closely behind excess cholesterol. It is a full cardiovascular risk, especially for young since issue 80% of victims of myocardial infarction under 45 years old are smokers. Most people smoke, more it is exposed to this risk. Thus, there is no “small risk” tobacco since the risk increased 63% from 1 to 9 cigarettes per day. Continue reading “For a heart without tobacco”

Together, improve management of myocardial infarction

Each year, about 100,000 people suffer from myocardial infarction in France. Although mortality has significantly decreased since 10 years, 13% of patients still die in the year following the accident. To improve support, health authorities have established a programme of priority actions.

The heart 2007-2010 program aims to further reduce mortality and complications of myocardial infarction by improving the different steps of its support. To do this, many recommendations for action and 30 good clinical practice indicators have been determined. Their development would help to assess the reality of the expected improvement.

acute chest pain

Evocative acute chest pain? Call the 15!
The phase known as acute myocardial infarction, the pain to the proper medical intervention, is a crucial step of the optimization of the support. Indeed, on the 13% of deaths in the first year, 7% are held during this initial stage! But only a quarter of the myocardial infarction have recommended optimal course: 15 (UAS) call and direct transfer in interventional cardiology. Continue reading “Together, improve management of myocardial infarction”

Is sex dangerous for the heart?

Can sex be originally of myocardial infarction? Rarely, this accident is due to such an activity. However, some experts talk about a doubling of the risk! Not panic, however, the danger remains very low in absolute terms and in most cases, the carnal love is a “practice” activity.

Classically, cardiologists are wary of Monday morning. Numerous epidemiological studies have, in fact, described a number of myocardial infarction more important this day there. This strange phenomenon has been assigned with the change of pace associated with the passage of the weekend the week and stress that accompanies many people home from work. Consumption of alcohol, which is traditionally important weekend in Anglo-Saxon and Scandinavian countries, could also play a negative role at this level (the alcohol acting on blood clotting).

dangerous for the heart

The false repose of the Warrior
In 2001, a study in Toulouse by the team of Professor Jean Ferrières (INSERM) has however led to conclusions somewhat different1. The researchers analyzed the number of myocardial infarction according to the days of the week, using: Continue reading “Is sex dangerous for the heart?”