| Ashtma |
| Definition of asthma: |
|
Asthma is a disorder, defined by an existing
inflammation of the bronchi, involving numerous cells, such as mastocytes,
eosinophil and neutrophil granulocyte and lymphocyte T. The consequences
of the inflammation are the symptoms of asthma: shortness of breath, coughing,
wheezing, or a feeling of chest tightness...
Asthma is not a new disease, but is known since antiquity, although is
true, that the nubmer of people having asthma increases. The word asthma
was already used by the famous writer from that time, Homer, in his epic
poems the Odyssey and the Iliad. He described warriors rushing into battle
as breathing ‘asthmos’ – heavily, because of war zeal, exertion, or even
fear. But the word then only signified the symptoms and not the disorder.
|
|
|
| Bronchial obstruction: |
|
Bronchial obstruction is a term, meaning that
there is something obstructing the flow of air, prohibiting the patient
from completely exhaling quickly (forcefully), like healthy people can.
This phenomenon can be very well and repeatedly measured with an airflow
measurer. Most commonly the PEF-meter (peak expiratory flow meter), which
measures the maximum flow of air at the mouth, is used.
The following mechanisms accompany a bronchial obstruction during asthma:
- a spasm of the bronchial muscles,
- swelling (edema of) bronchial mucous membrane,
- overproduction of the mucus.
|
|
|
| Typical symptoms during a worsening of asthma
(asthma "attack"): |
|
- wheezing in the chest,
- coughing,
- a feeling of chest tightness,
- shortness of breath,
- dispnea,
- increased mucus secretion.
Usually ALL of the symptoms DO NOT appear together during a worsening
of asthma, sometimes just a feeling of chest tightness appears, or just
coughing or so, depending on the magnitude of worsening and individual
differencies. |
|
|
| Factors that cause asthma: |
|
The cause of asthma is not yet known, or more
accurately, not yet precisely diagnosed, since it consists of many factors
that are complexly intertwinned together. The triggers of asthma deteriorations
are better explored. It is known that they are connected with atopy -
your body tends to create more type IgE antibodies when in contact with
an inhaled or a consumed allergen.
External factors:
Allergens: mites, animal hairs, molds, pollen, food...
Irritators: cigarette smoke, smog, some types of medicine, cold air ...
Infections:
The most common trigger of asthma deterioration is, especially with children,
a viral infection of the airways - mostly the viruses causing the common
cold or the flu. The infection at first appears as an innocent cold, soon
joined by coughing, followed in a few days by chest wheezing. Research
shows that with some people a viral infection can trigger the asthma.
It was discovered that an infection of the airways of asthmatics causes
the hyperactivity of the windpipe, and with allergic people it causes
a hypersensitivity to the external allergens. So viral infections can
trigger asthma or further deteriorate it. It was also discovered that
a permanent low-level bacterial infection can be the factor that constantly
maintains respiratory hyperactivity. Such patients suffer from recurring
asthma symptoms.
Psychological (internal) factors:
Psychological factors can increase respiratory hyperactivity, which is,
alongside the tendency towards it, mostly caused by allergens and infections.
Various emotional shocks, excitement and disappointment can accelerate
the manifestation of an attack or deteriorate the already existing condition.
Asthma cannot be pinned to a specific personality type, but asthma patients
can be, due to the nature of their disorder, which is disrupting their
lives, more worried and sensitive than healthy people.
Physical exertion:
Exercise induced asthma is usually linked with the cooling and drying
of the airways, which is a direct consequence of increased ventilation
(increased frequency and volume of breathing) during physical exertion.
Patients with asthma have hipersensitivite airways, that respond to increased
ventilation in a typical manner. |
| home |