Formoterol
It is shown that when using formoterol, the quality of life of patients with COPD is improved. Formoterol belongs to the class β2-adrenomimetics of long-acting. Against the background of the application of another β2long-acting adrenomimetic, salmeterol, there was an increase in the frequency of legal outcomes associated with bronchial asthma (13 of 13,176 patients) compared with placebo (3 of 13,179 patients).Clinical studies to assess the frequency of development of legal outcomes associated with bronchial asthma, against the background of the use of formoterol was not conducted.
Anti-inflammatory therapy
In patients with bronchial asthma formoterol should be used only as an additional treatment with insufficient control of symptoms against the background of monotherapy with inhaled glucocorticosteroids or in a severe form of the disease requiring the use of a combination of inhaled corticosteroid and long-acting beta2-agonist. Formoterol should not be used concomitantly with other long-acting beta2-agonists. When using formoterol, it is necessary to assess the patient's condition regarding the adequacy of the anti-inflammatory therapy used. After starting treatment with formoterol, the patient should be advised to continue the anti-inflammatory therapy without changes, even if improvement is noted.
To stop an acute attack of bronchial asthma, beta2-adrenomimetics of short action should be used. In case of sudden deterioration of the condition, patients should immediately seek medical help.
Severe exacerbations of bronchial asthma
13 placebo-controlled clinical trials in patients who received formoterol for 4 weeks, there was an increase in the incidence of severe exacerbations of bronchial asthma (0.9% with a dosing regimen of 10-12 mcg 2 times a day, 1.9% at 24 mcg 2 times a day) compared with the placebo group (0.3 %), especially in children 6-12 years old.
In two large controlled clinical trials involving 1,095 adult patients and children 12 years of age and older, severe exacerbations of bronchial asthma (requiring hospitalization) were more frequent in patients who received formoterol in a dose of 24 mcg 2 times a day (9/271, 3.3%), compared with formoterol groups at a dose of 12 mcg 2 times a day (1/275 0.4%), placebo (2/277, 0.7%) and albuterol (2/272 0.7%).
When using formoterol for 16 weeks in another large clinical trial involving 2085 adult patients and adolescents, there was no increase in the frequency of severe exacerbations of bronchial asthma, depending on the increase in the dose of formoterol. However, in this study, the frequency of severe exacerbation was higher in the formoterol group (with a dosage regimen of 24 μg 2 times a day - 2/527, 0.4%, 12 μg 2 times a day - 3/527, 0.6%). compared with placebo (1/517, 0.2%).In the open phase of this study, when using formoterol at a dose of 12 μg 2 times a day (if necessary, patients could use up to two additional doses of the drug), the frequency of severe exacerbations of bronchial asthma was 1/517, 0.2%.
In a 52-week, multicentre, randomized, double-blind clinical trial involving 518 children aged 6 to 12 years. the incidence of severe exacerbations of bronchial asthma was higher with formoterol at doses of 24 μg twice daily (11/171, 6.4%). 12 μg twice daily (8/171, 4.7%) compared with placebo (0/176 0.0%).
However, the results of the above clinical studies do not allow quantitative assessment of the incidence of severe exacerbations of bronchial asthma in various groups.
Hypokalemia
The consequence of therapy is β2-adrenomimetics, including formoterol, there may be a development of potentially serious hypokalemia. Hypokalemia may increase predisposition to the development of arrhythmias.
Since this action of the drug can be intensified by hypoxia and concomitant treatment, special care should be taken in patients with severe bronchial asthma.In these cases, regular monitoring of the potassium content in serum is recommended.
Paradoxical bronchospasm
As with other inhalation therapies, the possibility of developing a paradoxical bronchospasm should be considered. With the development of this condition, you should immediately cancel the drug and prescribe an alternative treatment.
Budesonide
To ensure that budesonide enters the lungs, it is important to instruct patients to properly administer the inhalation of the drug in accordance with the instructions for use. It should be informed to the patient that the drug is not intended to stop attacks, but for regular daily prophylactic use even in the absence of symptoms of bronchial asthma.
With the development of paradoxical bronchospasm should immediately stop using budesonide, assess the patient's condition and, if necessary, start therapy with other medications. Paradoxical bronchospasm should be immediately stopped with the help of β2-adrenomimetics of short action. The patient should always have an inhaler with β2-adrenomimetikom short-acting for relief of exacerbations of bronchial asthma.
The patient should be informed of the need to consult a doctor if the condition worsens (increased demand for short-acting bronchodilators, increased attacks of dyspnoea). In such cases it is necessary to conduct a survey and consider the possibility of increasing the dose of inhaled glucocorticosteroids or GCS for oral administration.
To reduce the risk of candidal infection of the oral cavity and pharynx, it is recommended to thoroughly rinse the mouth with water after each inhalation of the drug. With the development of candidal infection of the oral cavity and pharynx, local antifungal therapy can be performed without discontinuing treatment with budesonide.
In case of exacerbation of bronchial asthma, a dose of budesonide should be increased or, if necessary, treated with a short course of systemic SCS and / or antibiotic therapy should the infection develop.
It is necessary to regularly monitor the growth dynamics of children and adolescents receiving long-term inhaled glucocorticosteroids. If growth is delayed, consider the need to reduce the dose of inhaled glucocorticosteroids (the minimum effective dose) and refer the child to a consultation with an allergist.
Long-term effects of the growth delay (effect on final adult height) in children receiving therapy with inhaled glucocorticosteroids, ns studied. Adequate study of the ability to compensate for the delayed growth in children after the abolition of oral GCS therapy was not carried out.
Budesonide usually does not affect the function of the adrenal glands. However, in some patients with prolonged use at recommended daily doses, a systemic effect of budesonide may be noted.
In the application of inhaled corticosteroids at high doses and for a long period of time may develop systemic adverse events (but less frequently than when using SCS for oral administration), such as suppression of adrenocortical function, hyperadrenocorticism / Cushing's syndrome, growth retardation in children and adolescents, decrease in bone mineral density, hypersensitivity reactions, cataracts, glaucoma, and, rarely, a number of behavioral disorders including psychomotor hyperactivity, insomnia, agitation, depression or aggression (especially in children).
Patients with hormone-independent bronchial asthma
In patients with hormone-independent bronchial asthma, the therapeutic effect of budesonide develops on average within 10 days after initiation of treatment. At the beginning of budesonide therapy in patients with increased bronchial secretion to inhalation of the drug, it is possible to add to the GKS therapy for oral administration with a short course (duration about 2 weeks).
Patients with hormone-dependent bronchial asthma
It is necessary to stabilize the patient's state when going from taking GCS inward to the inhalation use of budesonide.
During the first 10 days, high doses of budesonide are used in combination with previous SCS for oral administration at the previous dose. Then the daily dose of GCS for oral administration is gradually reduced (but 2.5 mg every month in terms of prednisolone) to the lowest possible level. Do not abruptly discontinue treatment with GCS, including budesonide.
In the first months after the transition, the patient's condition should be carefully monitored until the function of the hypothalamic-hygiene-adrenal system is restored, sufficient to provide adequate response to stressful situations (for example, trauma, surgery or severe infection).It is necessary to regularly monitor the performance of the gynothalamo-gynophysial-paternoster system.
In some cases, a patient with a dysfunction of the adrenal cortex may need additional use of GCS for oral administration during stressful situations. This category of patients is recommended to always have a warning card with them, indicating that they need additional systemic application of GCS in stressful situations.
When transferring patients from systemic GCS to inhaled therapy with budesonide, such reactions as allergic rhinitis, eczema, blocking, pain in muscles and joints, sometimes nausea and vomiting, which were previously stopped by the reception of systemic GCS, may appear. Treatment of these reactions should be carried out with antihistamines or GCS for topical use.