Cardiorespiratory Polygraphy

Cardiorespiratory polygraphy is a non-invasive investigation used to diagnose sleep-related breathing disorders, particularly obstructive sleep apnea, as well as central or mixed forms of apnea. The test records multiple parameters simultaneously, providing a comprehensive picture of the interaction between the heart, lungs, and airways during sleep.

When cardiorespiratory polygraphy is recommended

• in patients suspected of having sleep apnea (loud snoring, breathing pauses observed by a partner, non-restorative sleep),
• in cases of excessive daytime sleepiness, chronic fatigue, or decreased concentration,
• in patients with arterial hypertension resistant to treatment,
• in the presence of cardiovascular diseases (heart failure, arrhythmias, coronary artery disease) where nocturnal breathing disorders are suspected,
• to monitor the effectiveness of sleep apnea treatment.

How the investigation is performed

For one night of sleep, a set of sensors is applied to record:

• nasal and oral airflow,
• chest and abdominal movements,
• blood oxygen saturation,
• heart rhythm and pulse rate,
• body position during sleep.

The portable device stores all data, which are subsequently analyzed by a specialist physician.

What information polygraphy provides

• confirms or excludes the diagnosis of sleep apnea,
• determines the type of apnea (obstructive, central, or mixed),
• assesses the severity of the breathing disorder,
• evaluates the impact on the heart and circulation,
• guides appropriate treatment (CPAP therapy, lifestyle changes, medical or surgical treatment).

Benefits for the patient

Cardiorespiratory polygraphy is a safe, comfortable, and easy-to-perform method, usually carried out at the patient’s home in their natural sleep environment. This investigation plays a crucial role in the accurate diagnosis of sleep apnea and in preventing associated cardiovascular complications.