Cheyne-Stokes breathing is a rhythmic pattern of breathing that cycles between gradually deepening breaths, a peak of rapid breathing, and then a tapering off into very shallow breathing or a complete pause. Each cycle typically lasts 30 seconds to 2 minutes. It most commonly occurs in people with heart failure or neurological conditions, and it also appears in the final hours or days of life.
What the Pattern Looks and Sounds Like
The hallmark of Cheyne-Stokes breathing is its wave-like rhythm. Breaths start almost imperceptibly, grow deeper and faster until they hit a peak, then gradually fade until the person stops breathing entirely for a stretch. After that pause, the cycle starts again. Clinicians describe this as a “crescendo-decrescendo” pattern, but watching it looks more like someone slowly turning a volume dial up and then back down, over and over.
A typical cycle breaks down into roughly 20 seconds of no breathing (the apnea phase) followed by about 35 to 45 seconds of increasingly vigorous breathing (the hyperpnea phase). In practice, you might see a person take one or two barely noticeable breaths, followed by three or four deep, rapid ones, then one or two fading breaths before the pause. It is formally identified when at least three of these cycles occur in a row.
The pauses can be alarming to witness, especially for family members. During the apnea phase, the person may appear to have stopped breathing altogether. Then breathing resumes on its own, builds in intensity, and the whole pattern repeats.
Why the Body Breathes This Way
Normal breathing is controlled by a feedback loop: sensors in the brain detect rising carbon dioxide levels in the blood and signal the lungs to breathe faster. When carbon dioxide drops, the signal eases off. This loop is fast and smooth enough that you never notice it working.
Cheyne-Stokes breathing happens when that feedback loop becomes unstable. Two main problems can cause this. First, the brain’s carbon dioxide sensors can become overly sensitive, so they overreact to small changes. When carbon dioxide rises even slightly during a pause, the brain triggers an exaggerated burst of breathing that blows off too much carbon dioxide. That overcorrection then causes another pause, and the cycle continues.
Second, in people with heart failure, blood circulates sluggishly between the lungs and the brain. This delay means the brain is always working with outdated information about gas levels in the blood. By the time the brain registers that carbon dioxide is high, it’s already been high for several seconds, so the corrective response overshoots. That circulatory delay is a major reason Cheyne-Stokes breathing is so closely linked to heart failure.
Conditions That Cause It
Heart failure is the most common medical context for Cheyne-Stokes breathing, particularly moderate to severe heart failure where the heart’s pumping ability is significantly reduced. The weaker the heart, the longer the circulatory delay, and the more pronounced the breathing pattern tends to become.
Stroke is another frequent trigger. A study published in Neurology found Cheyne-Stokes breathing in 59% of patients with strokes affecting the upper brain and 40% of those with strokes in the lower brain. It has traditionally been associated with deep or bilateral brain damage, but it appears to be common across many types of stroke. Other neurological causes include traumatic brain injury, brain tumors, and conditions that affect the brainstem.
High altitude can produce a temporary version of this pattern in otherwise healthy people. At elevation, lower oxygen levels destabilize the same breathing feedback loop, producing cyclical breathing especially during sleep. This form resolves once the person acclimates or returns to lower altitude.
Cheyne-Stokes breathing also occurs in the final stage of life, regardless of the underlying illness. As the body’s systems slow down, breathing often becomes irregular, cycling between shallow breaths and deeper, rapid breaths with pauses in between. The NHS notes this as one of the changes that can happen in a person’s last hours and days.
What It Means for Heart Failure Prognosis
When Cheyne-Stokes breathing accompanies heart failure, it signals more severe disease and carries real prognostic weight. Research published in the Journal of the American College of Cardiology found that heart failure patients with Cheyne-Stokes breathing had a 2.7 times higher risk of death compared to those with obstructive sleep apnea, another common breathing disorder in heart failure. Over the study period, 53% of the Cheyne-Stokes group died, compared to 26% in the obstructive sleep apnea group.
That elevated risk held up even after researchers accounted for age, heart function, symptom severity, body weight, and medications. In other words, the breathing pattern itself is an independent marker of worse outcomes, not just a side effect of being sicker in other measurable ways. This is why doctors take its presence seriously when evaluating how aggressively to manage a patient’s heart failure.
How It Disrupts Sleep
Many people with Cheyne-Stokes breathing are unaware of it because it occurs primarily during sleep. Bed partners are often the first to notice the cycling pattern and the unsettling pauses. The repeated apneas fragment sleep architecture, pulling the person out of deeper sleep stages dozens of times per night without full awakenings. The result is daytime fatigue, poor concentration, and reduced exercise tolerance, symptoms that overlap with and worsen heart failure itself.
Cheyne-Stokes breathing during sleep is classified as a form of central sleep apnea, meaning the pauses originate from the brain’s signaling rather than from a physical airway blockage. This distinction matters because it responds to different treatments than the more common obstructive sleep apnea.
Treatment Options
Because Cheyne-Stokes breathing is almost always a consequence of another condition, the first line of treatment is optimizing care for that underlying problem. In heart failure patients, improving heart function with medications, devices, or other interventions can reduce or eliminate the abnormal breathing pattern.
When the breathing pattern persists despite optimized treatment, breathing support devices used during sleep are the next step. Two main options exist:
- CPAP (continuous positive airway pressure) delivers a steady stream of air pressure to keep the airway open and stabilize breathing. It reduces breathing events but works at a fixed pressure that doesn’t adapt to the changing pattern of Cheyne-Stokes breathing.
- Adaptive servo-ventilation (ASV) is a more sophisticated device that monitors breathing in real time and adjusts air pressure breath by breath. When it detects breathing fading toward a pause, it increases support. When breathing is adequate, it backs off. If breathing stops entirely, it delivers a backup breathing rate automatically.
Head-to-head comparisons show ASV outperforms CPAP for this specific condition. In a three-month study, ASV reduced breathing disruptions more effectively, and patients used it about 48 minutes longer per night than CPAP, suggesting it was more comfortable. The ASV group also showed greater improvements in heart pumping efficiency and exercise capacity, measured by how far patients could walk in six minutes.
Supplemental oxygen during sleep is another option that can stabilize the feedback loop by preventing oxygen levels from dropping low enough to trigger the exaggerated breathing response. It is sometimes used alone or alongside a breathing device.
One important caveat: a major clinical trial (known as SERVE-HF) found that ASV may increase mortality risk in a specific subset of heart failure patients, those with severely reduced heart pumping function. Because of this, ASV is not appropriate for everyone, and the decision to use it depends on the individual’s cardiac status.
In the Context of End of Life
When Cheyne-Stokes breathing appears in someone who is actively dying, it carries a different meaning than it does in a chronic illness. Here, it reflects the natural winding down of the body’s regulatory systems rather than a treatable medical problem. The pauses between breathing cycles may gradually lengthen, and the breathing peaks may become shallower over time.
For family members and caregivers, this pattern can be distressing to witness. The long pauses can make it seem like the person has died, only for breathing to resume seconds later. Understanding that this is a normal part of the dying process, not a sign of distress or suffocation, can help reduce some of that anxiety. The person is typically unaware of the irregular breathing and is not experiencing the sensation of breathlessness.