Noninvasive Open Ventilation (NIOV™) Therapy: Clinical Implications



Fig. 10.1
NIOV™ apparatus (compressed oxygen source not shown)



Sensing ports located in the nasal pillows interface (Fig. 10.2) detect spontaneous respirations. The system can provide a mean fraction of inspired oxygen (FiO2) of 0.43 [1] by entraining air through two ports and blending it with supplemental oxygen (Venturi principle). Two molded nasal pillows form a seal at the nares to ensure positive pressure delivery. The maximum attainable inspiratory pressure and V T are 18 cm H2O and 1150 ml, respectively [1]. Other technical specifications of the device are listed in Table 10.1.

A194520_2_En_10_Fig2_HTML.gif


Fig. 10.2
The NIOV™ nasal pillows interface blends oxygen with air entrained through ports in the side of the interface, an application of the Venturi effect. Centrally located sense ports detect patient inspiratory effort, triggering the device to delivery positive pressure through nasal pillows that conform to the patient’s nares



Table 10.1
Technical specifications of the NIOV™ system


























































































Physical

Weight
1.0 lb (0.5 kg)

Height
3.1 in (7.9 cm)

Width
7.5 in (19.1 cm)

Depth
1.3 in (3.2 cm)

Mounting
Belt clip or pole mount

Features

Delivered gas
Oxygen with entrained air

Flow delivery
Closed-loop proportional valve

Breath sensing
Proximal in patient interface

Rate (breaths/min)
2–40, based on patient’s spontaneous breathing

Internal battery duration
4 h with nominal use

Internal battery charge time
90 % recharged within 2.5 h

Alarm types
Audible and vibrating

User interfaces
Push buttons, LEDs, color LCD touch screen

Patient accessible settings

Power
On, off

Volume delivery settings
Low, medium, high

Trigger sensitivity
0–9 (−0.01 to −0.34 cm H2O)

Alarm loudness
1–5

Vibrating alarm
On, off

LCD brightness
1–5

Clinician programmable settings

Breath timeout
12 breaths/min or 3 LPM

Volume delivery
50–250 ml in 10 ml increments

Inspiratory delivery time
10–40 % of breath period

Clinician programmable alarms

Breath timeout period
20 or 60 s

High breath rate
5–120 breaths/min

Low breath rate

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Jun 14, 2017 | Posted by in RESPIRATORY | Comments Off on Noninvasive Open Ventilation (NIOV™) Therapy: Clinical Implications

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