Effect of Noninvasive High Frequency Oscillatory Ventilation on Improving CO2 Clearance in COPD Patients

Guangzhou Institute of Respiratory Disease12 enrolled

Overview

High-frequency oscillatory ventilation (HFOV), as an ideal lung-protecting ventilation method, has been gradually used in neonatal critical care treatment, and is currently recommended as a rescue method for neonatal acute respiratory distress syndrome (ARDS) after failure of conventional mechanical ventilation. . Although its ability to improve oxygenation and enhance carbon dioxide (CO2) scavenging has been repeatedly demonstrated in laboratory studies, its impact on clinical outcomes in these patients remains uncertain. Non-invasive high-frequency oscillatory ventilation (nHFOV) combines the advantages of HFOV and non-invasive ventilation methods, and has become a current research hotspot in this field. It is recommended to be used to avoid intubation after conventional non-invasive ventilation therapy fails. For the treatment of intubation, there is still a lack of large-scale clinical trials to systematically explore its efficacy. The gradual increase in the clinical application of nHFOV has also enriched its use in the treatment of other diseases

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

NONE

Enrollment

Conditions

COPD Exacerbation Non-invasive Ventilation

Non-invasive high-frequency oscillatoryDEVICE

Non-invasive high-frequency oscillatory ventilation generates high-frequency pressure fluctuations in the airway caused by the opening and closing of a solenoid valve.

Noninvasive Bilevel Positive Pressure VentilationDEVICE

Noninvasive Bilevel Positive Pressure Ventilation.

Eligibility

Sex: ALLMin age: 40 YearsMax age: 80 Years

Medical Language ↔ Plain English

Inclusion Criteria: 1. Age 40-80, males and females; 2. Stage III and IV COPD and PaCO2≥50mmHg; 3. Similar with non-invasive ventilation; 4. Willing to participate in the study; 5. Able to provide informed consent. Exclusion Criteria: 1. Bronchiectasis; post-tuberculosis sequelae; rib cage deformities; neuromuscular disorders; and bronchial carcinoma. 2. Intolerant with NIV

Outcomes

Primary Outcomes

Partial pressure of carbon dioxide in peripheral blood

After the peripheral blood was arterialized for 10 minutes, 100 ul of the patient's finger peripheral blood was taken to measure the partial pressure of carbon dioxide in the peripheral blood.

Time frame: within 50 minutes after intervention

Secondary Outcomes

Asynchrony index

Asynchrony index is defined as the number of asynchrony events divided by the total respiratory rate computed as the sum of the number of ventilator cycles (triggered or not) and of wasted efforts: asynchrony Index (expressed in percentage) = number of asynchrony events/total respiratory rate (ventilator cycles +wasted efforts) × 100