Evaluation of the Safety and Tolerability of Nitric Oxide (NO) Via Inhalation to Subjects With Bronchiolitis
Prospective, Double Blind, Randomized Single-Center, Evaluation of Safety and Tolerability of Nitric Oxide Given Intermittently via Inhalation to Subjects with Bronchiolitis-Phase IIa Bronchiolitis is defined as an infection of the small airways. It is also the most common manifestation of acute lower respiratory infection (ALRI) in early infancy, and is the leading cause of global child mortality. NO has been shown to play a critical role in various biological functions, including the vasodilatation of smooth muscle, neurotransmission, regulation of wound healing and immune responses to infection such as microbicidal action directed toward various organisms. NO in the airways is considered to play a key role in the innate immune system in which the first-line of host defense against microbes is built.
It has shown the beneficial effect of NO in different diseases with several options of doses and regimens - from newborn with primary pulmonary hypertension which showed improvement in oxygenation after 30 minutes of NO treatment at 10-20 ppm, to a subject with adult respiratory distress syndrome, who demonstrated clinical improvement during NO treatment at 18 and 36 ppm.
In vitro studies utilizing a variety of nitric oxide (NO) donors suggested that NO, in part per million (ppm) concentrations, possesses antimicrobial and anti-viral activity against a wide variety of phyla including bacteria, viruses, helminthes and parasites.
Primary Objectives: Assess the safety of NO intermittent inhalation treatment in 2-12 month old bronchiolitis subjects. Assess the tolerability of NO intermittent inhalation treatment in 2-12 month old bronchiolitis subjects Secondary Objective: Assess the efficacy of NO intermittent inhalation treatment compared to standard treatment in 2-12 months old bronchiolitis subjects.
Prospective, double blind, randomized single-Center study of 44 hospitalized subjects aged 2 -12 months old, diagnosed with bronchiolitis will be enrolled into the study and randomized into 2 groups. Group 1 -Treatment group - Will receive nitric oxide inhalation in addition to standard treatment for up to 5 days, Group 2 - will receive ongoing inhalation of the standard treatment for 5 days.
Treatment administration: Treatment blindness will be kept by separating between unblinded team members (giving the actual treatment) and blinded team members, and by hiding the NO container and all study related equipment behind a curtain. Between study inhalations the subject will continue to receive the standard inhalation treatment. Oxygen (O2), NO , nitrogen dioxide(NO2)and fraction of inspired oxygen (FiO2) delivered to the patient will be continuously monitored.
All subjects will come for follow up visits on day 7(+5), 14 (+5) days and will be contacted on day 30 (+5) from day of admission to the department.
End of study treatment (both groups) will be assessed by a blinded study physician base on clinical assessment. Subject improvement that will lead to end study treatment = clinical score < 6 and/or (Oxygen saturation)SaO2 above 92% and/or decision of subject discharge from the hospital.
|Study Design:||Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
|Official Title:||Phase IIa Prospective, Double Blind, Randomized Single-Center, Evaluation of the Safety and Tolerability of Nitric Oxide Given Intermittently Via Inhalation to Subjects With Bronchiolitis|
- Met-Hemoglobin percentage (MetHb) associated with inhaled NO [ Time Frame: 21 days ] [ Designated as safety issue: Yes ]
- Number of participants with adverse events associated with inhaled NO as a measure of safety and tolerability [ Time Frame: 5 days ] [ Designated as safety issue: Yes ]
- Proportion of subjects (%) who prematurely discontinued the study due to adverse events (AEs) [ Time Frame: 5 days ] [ Designated as safety issue: Yes ]
- Comparing the Length of hospital stay (LOS) in days of subjects 2-12 months old with bronchiolitis treated with NO and standard treatment versus subjects treated with standard treatment [ Time Frame: 5 days ] [ Designated as safety issue: No ]
|Study Start Date:||January 2013|
|Estimated Study Completion Date:||August 2014|
|Estimated Primary Completion Date:||April 2014 (Final data collection date for primary outcome measure)|
Experimental: Nitric oxide inhalation + standard treatment
Inhalation of 160 ppm gNO for 30 minutes, 5 times daily, for 5 consecutive days or until discharged, which occurs first.
|Drug: Nitric Oxide|
Placebo Comparator: Standard treatment
|Beer-Sheba, Israel, 84101|
|Principal Investigator:||Asher Tal, M.D||Soroka University Medical Center|