Impact of Neurally Adjusted Ventilator Assist (NAVA) Mode on Patient Ventilator Asynchrony Using Helmet (NAVAHELMET)

Pierre and Marie Curie University

Status: Completed

Conditions: Non-Invasive Positive-Pressure Ventilation

Treatments: Device: Neurally Adjusted Ventilatory Assistance

Study type: Observational

Funder types: Other

Identifiers

NCT01161875

Nava Helmet #1

Details and patient eligibility

About

Non invasive ventilation has been proposed to reduce the incidence of ventilatory dysfunction following abdominal aortic surgery. However, the nasogastric tube reduces the airtightness of the facial mask used to perform non invasive ventilation and induces air leaks. The use of a helmet reduces air leaks, thus seems adequate to ensure patient-ventilator interface. However, the high dead space related to helmet volume is responsible for asynchrony between patient demand and ventilatory support delivery. The investigators hypothesized driving the ventilator based on a neural signal (diaphragm electrical activity) would reduce patient-ventilator asynchronies.

Enrollment: 10 estimated patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients with increased risk of postoperative ventilatory dysfunction following abdominal aortic surgery

Exclusion criteria

• Contra-indication to non-invasive ventilation pregnancy.