Will a special breathing machine help if I have sleep problems after my heart attack?
After a heart attack, some people develop sleep-disordered breathing, which means their breathing pauses or becomes shallow during sleep. This can lower oxygen levels and may affect heart recovery. A special breathing machine called adaptive servo-ventilation (ASVmv) has been studied in these patients. Research shows that ASVmv can reduce the amount of time spent with low oxygen at night 6. However, this treatment is not for everyone with sleep problems after a heart attack. It is specifically for those diagnosed with sleep-disordered breathing, and you would need a sleep study to find out if it is right for you.
What the research says
A 2024 study looked at patients who had a first-time heart attack and also had sleep-disordered breathing (defined as at least 15 breathing pauses per hour of sleep). The study randomly assigned 35 patients to either receive early treatment with ASVmv plus standard heart attack care, or standard care alone. After treatment, the ASVmv group spent much less time with oxygen levels below 90% during sleep. For example, the time in bed with low oxygen dropped from about 9.25% to 0.03% in the ASVmv group, while the control group did not improve 6. The study also found that ASVmv reduced both desaturation-related drops and non-specific oxygen drifts 6. Importantly, the study was small and focused on a specific type of breathing machine. It did not look at other sleep problems like insomnia or restless legs, which are common after a heart attack. Other research has shown that nurse-led peer support can help with anxiety and depression after a heart attack 2, and that exercise programs like moderate-intensity continuous training or high-intensity interval training can improve heart function 4. These approaches might also help sleep indirectly by reducing stress and improving overall health. However, no study directly compared ASVmv to these other treatments for sleep problems.
What to ask your doctor
- Could my sleep problems be related to sleep-disordered breathing after my heart attack?
- Would a sleep study be appropriate for me to check my oxygen levels during sleep?
- Is a breathing machine like ASVmv a possible treatment option for my situation?
- Are there other ways to improve my sleep, such as cardiac rehabilitation or stress management programs?
- How do I know if my sleep issues are affecting my heart recovery?
This question is drawn from common patient questions about this topic and answered using cited medical research. We do not provide individualized advice.