- Cough medicine - when they should be used?
- Available funds
- Types of cough
Types of cough
Cough - a protective reaction of the body that occurs when irritation of the respiratory tract. There are two kinds of cough: productive and non-productive. It called productive cough if it is accompanied by the release
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secretion and some particles inhaled from the environment. The so-called useless cough when respiratory not released anything called unproductive.
A productive cough - a defense mechanism to suppress it and do not follow unless it depletes the patient or becomes dangerous, for example, after surgery on the eyes. Nonproductive cough must be suppressed, but if it is due to the formation of thick secretions, which is difficult to cough up, it should be translated into productivity.
To prescribe treatment for coughs doctor listens to the lungs of the patient, and only then decide which tool to assign.
When you want to suppress the cough
Severe dry non-productive cough
Dry non-productive cough: where to look for the cause
may occur, for example, lung cancer
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. This cough does not bring relief to the patient, because the tumor that causes irritation of the respiratory tract, is not going anywhere. Constant irritation from the cough irritates the mucous membrane pushes the upper respiratory tract, which contributes to inflammation and further aggravates the patient's condition.
To suppress such cough commonly used antitussive drugs acting on the cough center in the brain and nerve receptors in the airways, stimulation of transmitting information to the central nervous system (afferent receptors).
By antitussives, acting on the cough center in the brain, are drugs with narcotic effects (eg, codeine), and drugs that have a non-narcotic antitussive effect (eg libeksin, tusupreks). Action latter usually accompanied by a decrease in the sensitivity of the bronchial tubes and the reduction of spasm
Drugs affecting the afferent receptors in the bronchi - is often light painkillers, relieves irritation with increased areas of afferent receptors. These drugs are drugs with a shielding effect of plant origin (eg, chamomile, eucalyptus). To suppress the cough reflex they are best used in the form of inhalations during which moistening the mucous membranes of the respiratory tract, which also decreases the irritation. All lozenges Cough is usually provided by enveloping effect.
In some cases, to suppress the activity of afferent receptors bronchi apply a local anesthetic (eg, lidocaine, benzocaine) - is often done before a variety of diagnostic and therapeutic procedures in the bronchi and lungs (eg, before bronchoscopy).
A productive cough requires the removal of the airway as much sputum, together with phlegm from the bronchial tubes and lungs removed products of inflammation and tissue breakdown.
Expectorants - is medications that help remove the pulmonary airways of sputum. All of them are divided into two groups: stimulating expectoration and mucolytic.
Medications that promote expectoration, to enhance the motility of small bronchi that promotes mucus toward the center. This mechanism of action is usually associated with increased secretion of mucus glands located in the bronchi and a slight decrease in viscosity of sputum. All drugs in this group are divided into two subgroups: the reflex and resorptive action.
For drugs reflex action are, for example, thermopsis, marshmallow, Terpin hydrate. They have a slight irritating effect on the gastric mucosal receptors simultaneously reflex (via their innervating nerves) affecting the bronchus.
The drugs resorptive actions have an effect (after ingestion) when the allocation of the mucosa of the respiratory tract. They irritate the bronchial glands and cause liquefaction of sputum. Such drugs include, for example, iodine - sodium iodide and potassium iodide.
Mucolytic means phlegm due to changes in the structure of mucus, reducing its viscosity and adhesion to the walls of the bronchi (adgezivanye properties). These tools include enzymes (eg, trypsin) and synthetic (bromhexine, ambroxol) drugs. Mucolytics only liquefies phlegm, without increasing its volume.
As an expectorant guaifenesin is often used today. He is a member of tools such as broncho-koldreks, Tussin and other combined expectorants. The mechanism of action of guaifenesin - a combination expectorant and mucolytic effects.