U.S. Range PS-4-20 Especificaciones descargar pdf (Pagina 28)

Time

Pressure

Target alveolar ventilation

Actual alveolar ventilation

Time lapse

Pressure increases

to meet target alveolar

ventilation

Pressure decreases

to meet target alveolar

ventilation

Automatically changing pressure support

and iBR to maintain alveolar ventilation

Which patients is iVAPS suitable for?

iVAPS is suitable for adults with respiratory insufﬁciency. It

is ideal for patients whose condition is likely to change and

is characterized by hypoventilation (day/night hypercapnia).

Patient conditions may include:

•Neuromuscular disease and restrictive conditions — iVAPS can

maintain stable ventilation when respiratory effort ﬂuctuates

•Obesity hypoventilation — When compared to standard

Pressure Support therapy, iVAPS can compensate for changes

in respiratory mechanics, such as during nocturnal changes in

the patient’s body position

•Chronic obstructive pulmonary disease — iVAPS may reduce the

risk of hyperinﬂation associated with increased respiratory rate,

as compared to therapy targeting tidal volume

What does iVAPS target?

iVAPS targets alveolar ventilation to deliver required

ventilation at the alveoli, where gas exchange occurs.

Unlike other volume-assurance modes, iVAPS maintains

the alveolar target even when respiratory rate changes.

Why is alveolar ventilation important?

Setting alveolar ventilation targets the patient’s true

ventilation requirements and represents a more

accurate approach.

It’s able to deliver the required ventilation at the alveoli,

where gas exchange occurs, by taking into account and

compensating for the portion of air that travels through

the conducting airways.

What are the goals of therapy with iVAPS?

•Optimizing therapy by delivering a set alveolar ventilation with the

right pressure at the right time

•Enhancing patient-ventilator synchrony with an intelligent Backup

Rate (iBR) to enhance patient comfort

•Minimizing sleep disruption with its rapid, yet gentle response that

is quick enough to maintain stable alveolar ventilation, yet smooth

enough to maintain sleep quality during nocturnal therapy

•Increased adherence to therapy with iVAPS

iVAPS Technology Q&A

iBR maximizes the patient’s opportunity to breathe

spontaneously before bringing the patient back to

target if backup breaths are required

Patient

effort

No patient

effort

Patient

effort

iBR stays out of

the way when

not required

iVAPS intelligent backup rate (iBR)

Patient spontaneous rate

Target patient rate

Time

Breaths per minute

1 Jaye J, Kelly J et al. Eur Respir J 2012; 40: Suppl. 56, 51

26 S9 VPAP Tx Lab System | Sleep Lab Titration Guide

ResMed.com

iVAPS Technology

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