CPAP machine after stroke: why I wish I had started sooner

Sleep apnea and stroke: the hidden link

Roughly 60% of stroke survivors have obstructive sleep apnea. Most do not know it. The apnea causes repeated drops in blood oxygen, surges in blood pressure, and fragmented sleep that never lets the brain enter deep restorative phases. All of these increase stroke recurrence risk.

My apnea was diagnosed three years post-stroke. I had blamed every symptom on recovery. The morning headaches, the afternoon crashes, the blood pressure that would not budge — I thought they were just "how recovery is." They were not. They were sleep apnea.

What CPAP did for me

Within two weeks of starting CPAP, my morning headaches were gone. Within a month, my afternoon fatigue was cut in half. Within three months, my blood pressure was easier to control and my medication dose was reduced. The effect was not subtle. It was the single biggest quality-of-life improvement in my recovery after the electric ankle trainer.

What to look for in a CPAP machine

Modern CPAP machines are quiet, small, and data-connected. Look for auto-adjusting pressure (APAP), a heated humidifier (prevents dry mouth and nasal irritation), and a quiet motor (under 30 decibels). The mask matters more than the machine — nasal pillows, nasal mask, or full-face depending on how you breathe.

• Auto-adjusting pressure (APAP) — adjusts to your needs throughout the night
• Heated humidifier — prevents the dry mouth and nasal irritation that make people quit
• Quiet motor — under 30 dB so you and your partner can sleep
• Data tracking — shows compliance, leak rates, and AHI reduction
• Mask fit — nasal pillows for minimal contact, nasal mask for mouth-breathers, full-face for high-pressure needs

How to get a sleep study — and what happens if you cannot tolerate CPAP

Getting the study: ask your neurologist or primary care doctor to order a polysomnography. Many providers now offer home sleep apnea tests (HSAT) — a simplified overnight device that measures oxygen saturation, airflow, and respiratory effort without a lab stay. HSTAs are adequate for diagnosing moderate-to-severe OSA. If the HSAT is negative but symptoms persist, request an in-lab study — central apnea (common after stroke) can be missed by home devices.

If you cannot tolerate CPAP: mask intolerance is the most common reason people quit. Work with a respiratory therapist and try at least three different mask types before concluding CPAP does not work for you. If pressure tolerance is the issue, ask about BILEVEL (BiPAP) which has separate inhale and exhale pressures and is often more comfortable. Auto-titrating BiPAP is now covered by most insurance with a documented CPAP intolerance.

Positional therapy: some survivors have obstructive apnea only when sleeping on their back. A positional sleep device (a backpack-style vest that prevents supine position) can reduce AHI by 50–60% in position-dependent OSA without a mask. Not as effective as CPAP for moderate/severe cases but better than nothing for CPAP-intolerant survivors.

Oral appliances: mandibular advancement devices (custom-fitted by a dentist with sleep training) are effective for mild-to-moderate OSA. Less effective than CPAP but far more tolerable for some people. Covered by dental insurance with a sleep physician prescription at many plans.