- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT05499039
High Flow Nasal Cannula Versus Non-Invasive (NIV)in Both Hypoxemic and Hypercapnic Respiratory Failure. (Highflow)
high flow nasal cannula (HFNC) oxygen therapy utilizes an air oxygen blend allowing from 21 % to 1 00% FiO2 delivery and generates up to 60 L/min flow rates The gas is heated and humidified through an active heated humidifier and delivered via a single limb heated inspiratory circuit (to avoid heat loss and condensation) to the patient through a large diameter nasal cannula Theoretically, HFNC offers significant advantages in oxygenation and ventilation over COT. Constant high flow oxygen delivery provides steady FiO2 and decreases oxygen dilution. It also washes out physiologic dead space and generates positive end expiration pressure (PEEP) that augments ventilation The heated humidification facilitates secretion clearance, decreases bronchospasm, and maintains mucosal integrity.
This study aims to evaluate the effectiveness of HFNC compared to NIMV in management of Acute hypoxemic and acute hypercapneic respiratory failure
Study Overview
Status
Intervention / Treatment
Detailed Description
- Acute respiratory failure (ARF) is a common and serious complication among hospitalized patients. It is the most frequent reason for admission to the intensive care unit (ICU) . It carries an in-hospital mortality rate of 20.6% and cost 54.3 billion dollars nationwide in United States in 2009. Among those patients with ARF, 42.1 % of patients require mechanical ventilation (MV), which is associated with a significant increase in both length of stay and medical expense
- ARF can be categorized into acute hypoxemic respiratory failure(AHRF) and acute hypercapneic respiratory failure.
- Supplemental oxygen and treatment of the underlying cause is the mainstay of therapy for AHRF. Options for oxygen therapy include conventional oxygen therapy delivered via nasal cannulae (NC) or face masks (FM) initially, followed by non-invasive ventilation (NIV), and finally intubation or mechanical ventilation (MV) .
- Traditional NC and FM (collectively referred to as conventional oxygen therapy or COT) can achieve flow rates of up to 1 5 L/min. However, these flow rates may be significantly lower than patients' spontaneous inspiratory flow rates and the oxygen is diluted as it is mixed with room air Consequently, the fraction of inspired oxygen (FiO2) delivered Is variable and this is thought to explain why many patients require an escalation of oxygen therapy to NIV or MV.
- By contrast, humidified high flow nasal cannula (HFNC) oxygen therapy utilizes an air oxygen blend allowing from 21 % to 1 00% FiO2 delivery and generates up to 60 L/min flow rates The gas is heated and humidified through an active heated humidifier and delivered via a single limb heated inspiratory circuit (to avoid heat loss and condensation) to the patient through a large diameter nasal cannula Theoretically, HFNC offers significant advantages in oxygenation and ventilation over COT. Constant high flow oxygen delivery provides steady FiO2 and decreases oxygen dilution. It also washes out physiologic dead space and generates positive end expiration pressure (PEEP) that augments ventilation The heated humidification facilitates secretion clearance, decreases bronchospasm, and maintains mucosal integrity
- HFNC has been well studied in the neonatal and pediatric settings However, in adults, the use of HFNC has Primarily been studied in post-cardiac surgery post-extubation and bronchoscopy patients. However, the utility of HFNC use in adults with AHRF in emergency and general inpatient practice is less clear .Heated and humidified high-flow oxygen through nasal cannula (HFNC) has been developed over the past 2 decades, as an alternative to standard oxygen delivery systems
- . In adults, it has been used to treat hypoxemic respiratory failure, cardiogenic pulmonary edema, postoperatively and postextubation in do-not-intubate patients or during bronchoscopy
- To date, the literature supports the possibility to use HFNC as alternative to non-invasive ventilation (NIV) in some settings, while in others might be even superior . It is also an alternative to standard oxygen as first line therapy in management of patients with acute respiratory failure . NIV is strongly recommended in patients with acute-on-chronic respiratory failure associated with acute respiratory acidosis, the vast majority of whom meet the criteria for Chronic Obstructive Pulmonary Disease (COPD) exacerbation
- Recently, Studies revealed no difference of the 30-day mortality and intubation rate between NIV and HFNC, in severe acute exacerbation of COPD with moderate, hypercapnic, acute respiratory failure. In a retrospective study, that suggeste that HFNC oxygen therapy was beneficial, even in respiratory failure Type 2, resulting in significant improvement of both oxygenation and hypercapnia. another study also indicated that HFNO leads to a flow-dependent reduction in PaCO2 in patients with stable hypercapnic COPD, due to a washout of the respiratory tract and a functional reduction in dead space
- Although cumulative evidence supports that HFNC is effective in patients with hypercapnia, randomized studies to compare HFNC vs. NIV in patients with acute, hypercapnic respiratory failure are missing. so the investigator conducting this prospective, randomized, controlled trial, involving patients admitted to the Emergency Department (ED), to compare the efficacy of HFNC versus NIV in the management of acute hypercapnic respiratory failure.
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Abdelrahman Mo Alham, Demonstrator
- Phone Number: 01014546379
- Email: abdoverno@gmail.com
Study Contact Backup
- Name: Peter At Rizk
- Phone Number: 01553529181
Study Locations
-
-
-
Assiut, Egypt
- Assiut University
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age above 18
- Acute hypoxemic respiratory failure. (Participants admitted with acute hypoxemic respiratory with the following criteria:
RR> 25 breath/minute Use of accessory muscles of respiration, paradoxical breathing, thoracoabdominal asynchrony.
Hypoxemia evidenced by PaO2 / FiO2 ratio <300)
- Acute hypercapnic respiratory failure ((Participants admitted with acute hypercapneic respiratory with the following criteria:
pO2 less than 60 mm Hg (hypoxemia). pCO2 greater than 50 mm Hg (hypercapnia) with pH less than 7.35. Signs and symptoms of acute respiratory distress)
Exclusion Criteria:
- Patients with preprocedural or post-procedural settings (ex: surgery, bronchoscope) post- extubation,
- Patients with cancer or transplant patients,
- Patients less than 18 years old
- Patients with Heart failure patients
- Patients with renal failure patients
- Patients with hemodynamic instability
- Patients with central causes of hypercapnic respiratory failure
- Patients with disturbed conscious level
- Patients who refuse to participate in the study
- Indication for emergency endotracheal intubation
- Tracheotomy or other upper airway disorders
- Active upper gastrointestinal bleeding
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Group A1 (NIVMV on hypoxemic)
Use of NIV on acute hypoxemic respiratory failure patients
|
Respiratory assistance is provided by a NIV either Puritan Bennet 840 , Engström Carestation or Hamilton-G5 , will be used for conventional non-invasive ventilation via an oronasal mask. Settings will be adjusted based on the clinical assessment of the respiratory therapist . Initial setting includes: - Positive End Expiratory Pressure (PEEP): 5 cmH2O. Pressure support (PS): 12-20 cmH2O. FiO2 will be adjusted to achieve a SpO2 at least 95% Intervention: Device: non-invasive ventilation |
Experimental: Group A2 (HFNC on hypoxemic)
Use of HFNC on acute hypoxemic respiratory failure patients
|
High flow nasal cannula consists of an apparatus that allows adjustable FiO2 from 21 to 100% and delivers a modified gas flow up to 60 l/ min . will be set with: - Temperature at 37°C or 34°C Flow rate 30: 50 L/min. FiO2 will be adjusted to achieve a SpO2 at least 95%
Other Names:
|
Active Comparator: Group B1 (NIVMV on hypercapneic)
Use of NIV on acute hypercapneic respiratory failure patients
|
Respiratory assistance is provided by a NIV either Puritan Bennet 840 , Engström Carestation or Hamilton-G5 , will be used for conventional non-invasive ventilation via an oronasal mask. Settings will be adjusted based on the clinical assessment of the respiratory therapist . Initial setting includes: - Positive End Expiratory Pressure (PEEP): 5 cmH2O. Pressure support (PS): 12-20 cmH2O. FiO2 will be adjusted to achieve a SpO2 at least 95% Intervention: Device: non-invasive ventilation |
Experimental: Group B2 (HFNC on hypercapneic)
Use of HFNC on acute hypercapneic respiratory failure patients
|
High flow nasal cannula consists of an apparatus that allows adjustable FiO2 from 21 to 100% and delivers a modified gas flow up to 60 l/ min . will be set with: - Temperature at 37°C or 34°C Flow rate 30: 50 L/min. FiO2 will be adjusted to achieve a SpO2 at least 95%
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Evaluation of HFNC and NIV in correction of Acidosis .
Time Frame: Baseline
|
Evaluation of the effectiveness of HFNC VS NIV in correction of Acidosis through measurement of PH via arterial blood gases test (ABG). Evaluation of the effectiveness of HFNC in correction of Acidosis through measurement of PH via arterial blood gases test (ABG). |
Baseline
|
Evaluation of HFNC and NIV in correction of Hypercapnia.
Time Frame: Baseline
|
Evaluation of the effectiveness of HFNC VS NIV in correction of Hypercapnia through measurement of PCO2 by mmHg via arterial blood gases test (ABG)
|
Baseline
|
Evaluation of HFNC and NIV in management of Acute hypoxemic respiratory failure.
Time Frame: Baseline
|
Evaluation of the effectiveness of HFNC VS NIV in management of Acute hypoxemic respiratory failure through measurement of PO2 via arterial blood gases test (ABG)
|
Baseline
|
Evaluation of HFNC and NIV in correction of Hypoxemia.
Time Frame: Baseline
|
Evaluation of the effectiveness of HFNC VS NIV in correction of Hypoxemia through measurement of O2 saturation by percentage % via pulse oximeter.
|
Baseline
|
Endotracheal intubation rate.
Time Frame: Baseline
|
needs escalation to invasive mechanical ventilation
|
Baseline
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
In hospital mortality.
Time Frame: one month
|
death
|
one month
|
duration of intervention
Time Frame: one month
|
time needed for ventilatory support
|
one month
|
hospital coast
Time Frame: one month
|
effects on hospital coast
|
one month
|
duration of ICU stay .
Time Frame: one month
|
icu occupancy
|
one month
|
development of complications
Time Frame: one month
|
due to devices
|
one month
|
Collaborators and Investigators
Sponsor
Investigators
- Study Director: Zein Al-abdeen Ah Sayed, professor, Assiut University
- Principal Investigator: Taghred SA Meshref, professor, Assiut University
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- HFNC VS NIV
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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