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Unstable breathing (pause risk)?

ST mode (GH-B20T/B25V): balances spontaneous/timed ventilation.

Weak spontaneous breathing?

T mode (GH-B20T/B25T): fixed-interval ventilation.

Normal spontaneous breathing?

S mode (GH-B20/B25V): patient-triggered.

Fluctuating airway resistance?

APAP mode (GH-A20A/B25): auto-pressure adjustment.

OSA (stable airway)?

CPAP mode (GH-A20/B20): continuous airway patency.

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