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Antibiotic hypersensitivity in patients with CF
1Children's Hospital of Buffalo, State University of New York at Buffalo, Buffalo, NY 14222, USA.
Abstract:
Antibiotic hypersensitivity reactions are relatively common in patients with cystic fibrosis (CF). The nature of the reactions and the mechanisms are no different in CF than the general population. Beta-lactam agents are the most common cause of these reactions. The risk depends on the specific beta-lactam agent used with Penicillins having a higher frequency of allergic reactions. There are several risk factors for developing these allergic responses, especially the increased usage. Since the available choices for antibiotic therapy is limited by the sensitivity of the organisms, management becomes a challenge. It is essential to classify the nature of the hypersensitivity reactions and determine the risks of repeat administration of the drug. Unfortunately, reliable skin tests are not available for all the antibiotics. RAST is of limited value. Recent data on cross-reactions between beta-lactam antibiotics and the option of newer agents offer useful alternative choices. Knowledge of the chemical structures of the antibiotics is useful for selecting suitable substitutes. Desensitization is a viable option in many of the reactions unless otherwise contradicted.
Insights
Antibiotic hypersensitivity reactions are common in cystic fibrosis (CF) patients, particularly with beta-lactam antibiotics. Understanding reaction types and risks is crucial for safe and effective antibiotic management in CF.
Area of Science:
- Clinical Medicine
- Pharmacology
- Immunology
Background:
- Antibiotic hypersensitivity reactions are frequent in cystic fibrosis (CF) patients.
- Mechanisms and presentation in CF mirror the general population.
- Beta-lactam antibiotics, especially penicillins, are common culprits.
Purpose of the Study:
- To review the nature and management of antibiotic hypersensitivity in CF.
- To highlight challenges in antibiotic selection due to limited therapeutic options.
- To discuss risk factors and diagnostic approaches for these reactions.
Main Methods:
- Review of existing literature on antibiotic hypersensitivity in CF.
- Analysis of beta-lactam cross-reactivity and alternative antibiotic choices.
- Evaluation of diagnostic methods like skin testing and RAST.
- Discussion of desensitization as a management strategy.
Main Results:
- Beta-lactam agents are the most frequent cause of hypersensitivity in CF.
- Penicillins show a higher incidence of allergic reactions compared to other beta-lactams.
- Increased antibiotic usage is a significant risk factor for developing hypersensitivity.
- Reliable skin tests are not universally available; RAST has limited utility.
Conclusions:
- Effective management requires classifying hypersensitivity reactions and assessing re-administration risks.
- Knowledge of antibiotic chemical structures aids in selecting safe alternatives.
- Desensitization is a feasible option for managing hypersensitivity reactions in CF patients.
- Further research into reliable diagnostic tools and novel therapeutic strategies is warranted.