Research on a NTHF to Improve Pulmonary Function in Patients With Respiratory Failure

Summary

Patients with respiratory failure have high morbidity and mortality. Long-term mechanical ventilation causes a high medical burden and cannot cure respiratory failure. Therefore, in-depth research on early weaning and oxygen therapy nursing mode is needed. Currently, studies on artificial airway high-flow oxygen therapy are limited. Studies have reported that oxygen inhalation devices that increase expiratory resistance produce flow-dependent positive airway pressure and lung volume effects that improve oxygenation and ventilation. It means that the innovation of oxygen therapy device may be a change The key to improving lung function and reducing mechanical ventilation in patients with respiratory failure.

The project team is committed to the innovation of high-flow oxygen therapy devices and the research on oxygen therapy care. In the early stage, the "New Artificial Airway High Flow Oxygen Therapy Device" was designed (NTHF), in 2018, the new technology and new projects were declared and approved to solve the problem of the flow rate of oxygen therapy devices. In the pre-test, 78 tracheotomy patients were observed using NTHF and respiratory humidification therapy device (AIRVOTM2 ) with high-flow oxygen therapy. As a result, NTHF was superior to AIRVOTM2 in improving airway humidification, oxygenation effect and cost, and published an article, which was approved in 2019 "Non-inferiority of humidification performance of a novel high-flow oxygen therapy device in oxygen therapy for tracheostomy-off-weaned patients. In 2021, it will be approved for the promotion of appropriate technologies for health and health in Guangdong Province. Relying on the high-level clinical key specialties of Guangdong Province, support with scientific research technology and financial support conditions.

Research hypothesis: NTHF has the physiological effects of increasing the positive expiratory pressure of artificial airway, alveolar ventilation, and humidification, and can improve the lung function of patients with respiratory failure after tracheotomy.

Conditions

• Respiratory Insufficiency

Interventions

DEVICE

high-flow oxygen therapy device for tracheotomized patients

From the output end of the automatic pressure-adjustable oxygen flow meter, connect the oxygen suction tube, Venturi, Fisher \& Paykel MR850 heated humidifier, RT308 breathing tube with humidification tank, closed sputum suction tube and tracheostomy tube), Adjust the MR850 to invasive automatic transmission, the temperature sensor automatically adjusts and maintains the gas temperature at the inlet of the tracheostomy tube at 37°C according to the feedback temperature, and adjusts the oxygen therapy device according to the gas outflow from the exhalation port of the patient's inspiratory phase. The gas flow rate is 40-60L/min. According to the monitored pulse oxygen saturation (SpO 2 ), the concentration of the venturi valve and the corresponding oxygen flow rate are adjusted to maintain the SpO 2 between 94% and 100%.

Sponsors & Collaborators

• Shenzhen Second People's Hospital

  lead OTHER

Principal Investigators

• MEI YANGMEI · Shenzhen Second People's Hospital

Study Design

Allocation

RANDOMIZED

Purpose

SUPPORTIVE_CARE

Masking

SINGLE

Model

PARALLEL

Eligibility

Min Age

18 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2022-07-01

Primary Completion

2022-08-01

Completion

2024-06-30

Countries

• China

Study Locations