COPD Clinical Trial
Official title:
CRP-guided Antibiotic Treatment in Patients Hospitalized With Acute Exacerbations of COPD Patients. A Randomized Controlled Intervention Trial.
Rationale: Acute exacerbations are key events in chronic obstructive pulmonary disease (COPD), resulting in poorer quality of life. Causes include irritants, viruses and bacterial pathogens. These exacerbations are often treated with a combination of corticosteroids, bronchodilators and antibiotics, but the benefit of antibiotic therapy remains controversial. Several trials studying antibiotic treatment in AECOPD showed conflicting data, with several large studies failing to demonstrate superiority of antibiotic therapy over placebo. Other trials indicated that antibiotic therapy is effective in patients who have at least two of the following symptoms: increased dyspnoea, increased sputum volume and increased sputum purulence. Ever since sputum purulence has been used as a predictive marker in AECOPD, a strategy that has been integrated in the GOLD guideline for treatment of AECOPD. However, the color of sputum reported by patients is not always reliable and inspection of sputum is not always possible. Several serum biomarkers such as C-reactive protein (CRP) and procalcitonin (PCT) are now available. In a recent trial of doxycycline in addition to systemic corticosteroids for patients hospitalized with AECOPD we found that CRP might be valuable as a marker predictive of response to antibiotic treatment in AECOPD.
Objective: CRP-guided antibiotic therapy will be compared with standard antibiotic therapy
in AECOPD. Our aim is that CRP guided therapy will lead to 20% reduction in antibiotic
consumption.
Study design: randomized controlled intervention trial Study population: Hospitalised COPD
patients with acute exacerbation. Intervention (if applicable): Patients with type 1 and 2
exacerbation will be assigned to either CRP guided therapy or antibiotic therapy according
to GOLD guidelines.
Main study parameters/endpoints: The main endpoint of the study is the reduction in
antibiotic consumption. Furthermore, the real incidence of infiltrates in AECOPD with fever
will be studied. As secondary outcome the objectives length of hospitalization, time to
treatment failure within 30-days and time to next exacerbation will be assessed. The
relation between the level of biomarkers the presence of infiltrates on the HRCT will be
investigated.
Subjective improvement in symptoms will be measured by symptoms (VAS-LRTI) and quality of
life will be assessed by St George's Respiratory Questionnaire. Finally, adverse effects of
the antibiotic treatment will be recorded.
In order to observe a significant difference of antibiotic consumption, 60% in standard
antibiotic group and 40% in CRP guided antibiotic group, with a power of 0.8, a total of 110
patients have to be assigned by randomisation to each group.
Nature and extent of the burden and risks associated with participation, benefit and group
relatedness: Patients in both treatment arms will receive a non-experimental treatment. Both
treatment options are recognized as part of standard care. The burden associated with
participation is limited to a total of 3 visits to the hospital and phone call for data
assessment at regular follow-up. There are no specific risks involved in participating. Less
adverse effects may be beneficially for the patient.
;
Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment
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