General Practice 2022

Adrenaline: what é, what it is for and when é used as remédio

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Adrenaline: what é, what it is for and when é used as remédio
Adrenaline: what é, what it is for and when é used as remédio

Adrenaline, also known as Epinephrine, is a hormone released into the bloodstream that has the function of acting on the cardiovascular system and keeping the body alert for situations of strong emotions or stress such as fight, flight, excitement or fear.

This substance is naturally produced by the adrenal glands, located above the kidneys, which also produce other hormones such as Cortisol, Aldosterone, Androgens, Noradrenaline and Dopamine, very important for the body's metabolism and circulation composition blood.

What is it for

As a way to stimulate the body, so that it can react more quickly to dangerous situations, some of the main effects of Adrenaline are:

  1. Increase heart rate;
  2. Accelerate blood flow to muscles;
  3. Activate the brain, making it more alert, with faster reactions and stimulating memory;
  4. Increase blood pressure;
  5. Accelerate breathing rate;
  6. Open the pulmonary bronchi;
  7. Dilate the pupils, making it easier to see in dark environments;
  8. Stimulate the production of extra energy, by transforming glycogen and fat into sugars;
  9. Decrease digestion and production of secretions by the digestive tract to save energy;
  10. Increase sweat production.

These effects are also stimulated by Noradrenaline and Dopamine, other neurotransmitter hormones produced by the adrenal gland, also responsible for various effects on the body and brain.

When it is produced

Adrenaline production is stimulated whenever any of the following situations exist:

  • Fear of something, so the body is prepared to fight or flee;
  • Practice of sports, especially extreme ones, such as climbing or jumping;
  • Before important moments, such as taking a test or interview;
  • Moments of strong emotions such as excitement, anxiety or anger;
  • When there is a decrease in blood sugar, to stimulate the transformation of fats and glycogen into glucose.

Thus, a person who is constantly stressed lives with high levels of adrenaline, because his body is always in a state of alert. This persistent activation of the body's reaction mechanisms causes a greater risk of developing high blood pressure, cardiac arrhythmias, cardiovascular diseases, in addition to a greater chance of acquiring autoimmune, endocrine, neurological and psychiatric diseases.

Better understand how emotions, generated by anxiety, depression and stress, can influence the emergence of diseases.

Adrenaline as medicine

The effects of adrenaline can be used in the form of medicines, through the application of its synthetic form in the body. This substance is therefore common in medicines with a potent anti-asthmatic, vasopressor and cardiac stimulant effect, being more used in emergency situations or in ICU's, with the aim of treating an anaphylactic reaction or to stimulate blood pressure levels, for example.

This medication is only available in hospital environments, or can only be carried by people who are at high risk of having a severe allergic reaction, and cannot be purchased in pharmacies.

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