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Summary
Ketotifen improved sleep quality for asthma patients at night, increasing total sleep time and reducing disturbances. However, it did not affect nocturnal oxygen levels or lung function (FEV1) in this study.
Area of Science:
- Pulmonary Medicine
- Sleep Science
- Pharmacology
Background:
- Asthma patients frequently experience nocturnal symptoms like wheezing and hypoxia.
- Sedative medications are sometimes considered for managing nighttime asthma, but safety is a concern.
Purpose of the Study:
- To evaluate the safety and efficacy of ketotifen for nighttime use in stable asthma patients.
- To assess ketotifen's impact on sleep quality, oxygen saturation, breathing patterns, and lung function.
Main Methods:
- A double-blind, placebo-controlled crossover study was conducted.
- 10 stable asthma patients received a single 1 mg dose of ketotifen or placebo.
- Evaluated arterial oxygen saturation (SaO2), breathing patterns, electroencephalographic (EEG) sleep stages, and overnight FEV1 changes.
Main Results:
- Ketotifen significantly increased total sleep time and reduced sleep disturbances compared to placebo (p < 0.02).
- Patients experienced less wakefulness and drowsiness (EEG stages 0 and 1) and more non-REM sleep with ketotifen.
- Nocturnal SaO2, breathing irregularity, and overnight FEV1 changes remained unaffected by ketotifen.
Conclusions:
- Ketotifen appears safe for nighttime use in stable asthma patients, improving sleep quality without compromising nocturnal oxygenation or lung function.
- The sedative properties of ketotifen may benefit asthma patients experiencing sleep disturbances.