What should you know about Cheyne–Stokes breathing after a stroke?

The pattern may look like breathing that gradually becomes faster or deeper, then fades to very shallow breaths before a pause. It can occur when the brain’s control of breathing is disturbed, including after an injury or stroke. A person may not notice the change themselves, especially during sleep.

Breathing is regulated through signals between the brain, lungs and blood. After a stroke, disrupted brain function can affect the timing of those signals. The result can be a cycle of increasing breaths followed by decreasing breaths and a short pause. Similar breathing patterns can have other causes, so seeing this pattern does not by itself confirm that a stroke has occurred or explain its cause.

A clinician may assess alertness, oxygen levels, breathing effort, heart rhythm and other neurological signs. They may also review medicines and existing conditions such as atrial fibrillation, hypertension or type 2 diabetes, which can be relevant to stroke risk and recovery.

If this breathing pattern is happening now after a stroke, stay with the person and arrange urgent medical assessment. Keep them in a safe position, loosen tight clothing and monitor whether they are awake and breathing normally between episodes. Do not give food, drink or medicines by mouth if they are drowsy or have difficulty swallowing.

Note when the pattern began, whether it occurs while awake or asleep, and any new weakness, facial drooping, speech change, confusion or numbness. If possible, record a short video for the treating team without delaying help.

Call emergency services immediately for severe breathlessness, blue or grey lips, prolonged pauses, inability to wake the person, collapse, a seizure, chest pain, or a sudden new neurological symptom such as one-sided weakness or trouble speaking. These signs can indicate a life-threatening breathing problem or another acute stroke-related emergency.

Even without those signs, a new repeating breathing pattern after stroke should be reviewed promptly. Do not wait for a routine appointment if the pattern is becoming more frequent, the person is unusually sleepy, or their breathing is visibly strained.

Ask what may be causing the breathing pattern, whether oxygen or heart monitoring is needed, and which changes should trigger emergency help. Also ask how swallowing, sleep, stroke rehabilitation and current medicines affect the plan, and whether blood pressure or heart-rhythm management needs review.