A partial sleep study is a limited version of a whole-night polysomnography (PSG). It has relatively fewer monitoring channels; and those are devoted to respiratory functions. The focus on respiratory functions makes it ideal for diagnosing sleep-related breathing disorders.
It is also a less expensive diagnostic procedure and the data it generates is much easier to score than data produced by a whole-night PSG.
A trend towards greater use of partial sleep studies is underway, though it cannot always replace a full PSG, especially if sleep problems are more complex or not caused only by respiratory disorders.
Channels Measured |
Full PSG Sleep Study |
Partial Sleep Study |
EEG (electroencephalogram) | ✓ | |
EMG (electromyogram) | ✓ | |
EOG (electro-oculogram) | ✓ | |
ECG (electrocardiogram) | ✓ | |
PLM (Peripheral Limb Movement) | ✓ | |
Snoring | ✓ | ✓ |
Nasal Flow | ✓ | ✓ |
Sleep Position | ✓ | ✓ |
Pulse Rate | ✓ | ✓ |
Oxygen Saturation Level | ✓ | ✓ |
Respiratory Effort | ✓ | ✓ |
Read more about sleep diagnostics here.
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