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Danger of amiodarone therapy and elevated inspired oxygen concentrations in mice
S K Donica1, A W Paulsen, B R Simpson
1Department of Anesthesiology, Baylor University Medical Center, Dallas, Texas 75246, USA.
Abstract:
Our study showed a statistically significant incidence of pulmonary edema in mice receiving amiodarone and 100% oxygen. This finding, together with a variety of clinical reports, indicates that in patients receiving amiodarone therapy, FiO2 should be maintained at the lowest possible level, consistent with adequate oxygenation.
Insights
Amiodarone and high oxygen levels significantly increase pulmonary edema risk in mice. Clinical data suggest limiting fraction of inspired oxygen (FiO2) during amiodarone therapy to prevent this adverse effect.
Area of Science:
- Pharmacology
- Pulmonary Medicine
- Toxicology
Background:
- Amiodarone is a widely used antiarrhythmic drug.
- High concentrations of inspired oxygen can cause lung injury.
- The interaction between amiodarone and hyperoxia is not fully understood.
Purpose of the Study:
- To investigate the incidence of pulmonary edema in mice exposed to amiodarone and 100% oxygen.
- To evaluate the clinical implications of amiodarone-induced pulmonary toxicity.
Main Methods:
- Mice were administered amiodarone.
- Mice were exposed to 100% oxygen.
- Incidence of pulmonary edema was assessed.
Main Results:
- A statistically significant incidence of pulmonary edema was observed in mice receiving amiodarone and 100% oxygen.
- This experimental finding aligns with existing clinical reports.
Conclusions:
- Amiodarone therapy may increase the risk of pulmonary edema when combined with high fraction of inspired oxygen (FiO2).
- Clinicians should maintain the lowest effective FiO2 level in patients receiving amiodarone to mitigate pulmonary toxicity.
