ResMed S9 VPAP Tx Manual De Usuario

5

English

The following table describes the therapy modes available on the S9 VPAP Tx. 

CPAP (Continuous Positive Airway 

Pressure)

Delivers a fixed pressure with optional Expiratory 

Pressure Relief (EPR). EPR can improve patient comfort.

AutoSet

Delivers CPAP therapy with optional Expiratory Pressure 

Relief (EPR). Automatically adjusts the CPAP pressure in 

response to snore, flow limited breaths and apneas.

VAuto 

Automatically adjusts pressure in response to flow 

limitation, snore and apneas. Pressure Support (PS) is 

fixed throughout the night and can be set by the clinician. 

Min EPAP and Max IPAP restrict the delivered pressure 

range.

Bilevel

Provides for control over a number of related bilevel 

therapy modes—S, S/T and T. In all cases you may set 

two treatment pressures— one for inspiration (IPAP) and 

one for expiration (EPAP). The difference between IPAP 

and EPAP levels is the pressure support.

S (Spontaneous) 

Senses when the patient is inhaling and exhaling 

and supplies the appropriate pressures accordingly. 

The difference between IPAP and EPAP levels helps 

determine the tidal volume.

S/T  (Spontaneous/ Timed)

Augments any breath initiated by the patient, but will also 

supply additional breaths should the patient breath rate 

fall below the clinician's set backup respiratory rate.

T (Timed)

The fixed respiratory rate and the fixed inspiration/

expiration time set by the clinician is supplied regardless 

of patient effort.

PAC (Pressure Assist Control)

The inspiration time is preset in the PAC mode. There 

is no spontaneous/flow cycling. The inspiration can be 

triggered by the patient when respiratory rate is above a 

preset value, or time triggered breath will be delivered at 

the backup breath rate.

ASV (Adaptive Servo-ventilation)

Treats central sleep apnea and/or mixed apneas and 

periodic breathing. In ASV mode, the expiratory positive 

airway pressure (EPAP) is adjusted by the clinician to 

maintain upper airway patency, while Min PS and Max 

PS restricts the range of automatically adjusted pressure 

support.

ASVAuto (Automatic Adaptive 

Servo-ventilation)

Treats central sleep apnea and/or mixed apneas and 

periodic breathing. In ASVAuto mode, the expiratory 

airway pressure (EPAP) is automatically adjusted to 

maintain upper airway patency between the limits set 

by Min EPAP and Max EPAP, while Min PS and Max PS 

restrict the range of automatically adjusted pressure 

support.

iVAPS (intelligent Volume-Assured 

Pressure Support)

Maintains a preset target alveolar minute ventilation by 

monitoring delivered ventilation, adjusting the pressure 

support and providing an intelligent backup breath 

automatically.