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- Klinische Studie NCT02100865
Solar Powered Oxygen Delivery
Solar Powered Oxygen Delivery: An Open-label Non-inferiority Comparison to Standard Oxygen Delivery Using Oxygen Cylinders
Studienübersicht
Status
Bedingungen
Intervention / Behandlung
Detaillierte Beschreibung
Arterial hypoxemia in pneumonia results from several mechanisms: pulmonary arterial blood flow to consolidated lung resulting in an intrapulmonary shunt, intrapulmonary oxygen consumption, and ventilation-perfusion mismatch. Hypoxemia is a risk factor for mortality in pediatric pneumonia, and was associated with a 5-fold increased risk of death in studies from Kenya and Gambia.
In one report from Nepal, the prevalence of hypoxemia (SpO2 < 90%) in 150 children with pneumonia was 39% overall, with increasing rates of hypoxemia across strata of pneumonia severity (100% of very severe, 80% of severe and 17% of pneumonia patients). General features of respiratory distress were associated with hypoxemia in this study, including chest indrawing, lethargy, grunting, nasal flaring, cyanosis, inability to breastfeed or drink.
Few studies have reported on the use of solar powered oxygen (SPO2) delivery. One online report describes the use of a battery-powered oxygenator in the Gambia that could be adapted to use solar power (http://www.dulas.org.uk). Otherwise, our intervention is to our knowledge the first example of SPO2 delivery.
New ways to deliver oxygen for children with pneumonia in Africa could improve outcomes and save numerous lives. If this study documents the non-inferiority of SPO2 relative to standard oxygen delivery, this novel method of providing life-saving oxygen could be rolled out across centres in sub-Saharan Africa where oxygen cylinders are not widely available and electrical power is not reliable. The potential energy efficiency, low cost and ease of use make solar power an attractive avenue of investigation for use in resource-constrained settings. Proof-of-concept that the sun can be used to drive oxygen delivery could stimulate commercial interest in this technology. The SPO2 system could thus achieve rapid penetration into the most remote or rural settings in sub-Saharan Africa.
Studientyp
Einschreibung (Tatsächlich)
Phase
- Phase 2
Kontakte und Standorte
Studienorte
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Jinja, Uganda
- Jinja Regional Referral Hospital
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Teilnahmekriterien
Zulassungskriterien
Studienberechtigtes Alter
Akzeptiert gesunde Freiwillige
Studienberechtigte Geschlechter
Beschreibung
Inclusion Criteria:
- Age <13 years
- IMCI defined pneumonia, severe pneumonia or very severe disease
- Hypoxemia (SpO2<90%) based on non-invasive pulse oximetry
- Hospital admission warranted based on clinician judgment
- Consent to blood sampling and data collection
Exclusion Criteria:
- SpO2 ≥90%
- Suspected pulmonary tuberculosis
- Outpatient management
- Denial of consent to participate in study
Studienplan
Wie ist die Studie aufgebaut?
Designdetails
- Hauptzweck: Behandlung
- Zuteilung: Zufällig
- Interventionsmodell: Parallele Zuordnung
- Maskierung: Keine (Offenes Etikett)
Waffen und Interventionen
Teilnehmergruppe / Arm |
Intervention / Behandlung |
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Experimental: Solar powered oxygen
Solar panels used to drive an oxygen concentrator to deliver at stream of oxygen at approximately 90% FiO2 and a rate of 1-5L/min.
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Aktiver Komparator: Oxygen from cylinders
Conventional oxygen delivery from compressed gas cylinders
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Was misst die Studie?
Primäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Length of hospital stay
Zeitfenster: Until end of hospitalization (usually 3 to 7 days)
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The number of days from admission to discharge.
Criteria for discharge are standardized and are assessed daily.
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Until end of hospitalization (usually 3 to 7 days)
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Sekundäre Ergebnismessungen
Ergebnis Maßnahme |
Maßnahmenbeschreibung |
Zeitfenster |
---|---|---|
Mortality
Zeitfenster: At hospital discharge (usually 3 to 7 days)
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In-hospital mortality will be quantified.
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At hospital discharge (usually 3 to 7 days)
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Duration of supplemental oxygen therapy
Zeitfenster: Until hospital discharge (usually 3 to 7 days)
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Time to wean patient off oxygen.
This is assessed daily using standard procedures.
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Until hospital discharge (usually 3 to 7 days)
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Proportion of patients successfully oxygenated
Zeitfenster: 6 hours
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Success defined as achieving a post-oxygen saturation above 90% within 6 hours.
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6 hours
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Oxygen delivery system failure
Zeitfenster: During hospitalization (usually 3 to 7 days)
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Failure defined as need for backup oxygen to maintain SpO2>90%.
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During hospitalization (usually 3 to 7 days)
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Cost
Zeitfenster: Until hospital discharge (usually 3 to 7 days)
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Cost of oxygen cylinders (control arm) and cost of equipment (capital investment - solar oxygen intervention arm).
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Until hospital discharge (usually 3 to 7 days)
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Lambaréné Organ Dysfunction Score (LODS)
Zeitfenster: Until hospital discharge (usually 3 to 7 days)
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This simple published clinical score predicts mortality in children with malaria, but may also have prognostic value in pneumonia.
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Until hospital discharge (usually 3 to 7 days)
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Mitarbeiter und Ermittler
Sponsor
Ermittler
- Hauptermittler: Michael T Hawkes, MD, PhD, University of Alberta
- Hauptermittler: Robert O Opoka, MBChB, MPH, Makerere University
Publikationen und hilfreiche Links
Allgemeine Veröffentlichungen
- Duke T, Wandi F, Jonathan M, Matai S, Kaupa M, Saavu M, Subhi R, Peel D. Improved oxygen systems for childhood pneumonia: a multihospital effectiveness study in Papua New Guinea. Lancet. 2008 Oct 11;372(9646):1328-33. doi: 10.1016/S0140-6736(08)61164-2. Epub 2008 Aug 15.
- Hawkes MT, Conroy AL, Namasopo S, Bhargava R, Kain KC, Mian Q, Opoka RO. Solar-Powered Oxygen Delivery in Low-Resource Settings: A Randomized Clinical Noninferiority Trial. JAMA Pediatr. 2018 Jul 1;172(7):694-696. doi: 10.1001/jamapediatrics.2018.0228.
- Nyende S, Conroy A, Opoka RO, Namasopo S, Kain KC, Mpimbaza A, Bhargava R, Hawkes M. Solar-powered oxygen delivery: study protocol for a randomized controlled trial. Trials. 2015 Jul 9;16:297. doi: 10.1186/s13063-015-0814-y.
Studienaufzeichnungsdaten
Haupttermine studieren
Studienbeginn
Primärer Abschluss (Tatsächlich)
Studienabschluss (Tatsächlich)
Studienanmeldedaten
Zuerst eingereicht
Zuerst eingereicht, das die QC-Kriterien erfüllt hat
Zuerst gepostet (Schätzen)
Studienaufzeichnungsaktualisierungen
Letztes Update gepostet (Schätzen)
Letztes eingereichtes Update, das die QC-Kriterien erfüllt
Zuletzt verifiziert
Mehr Informationen
Begriffe im Zusammenhang mit dieser Studie
Zusätzliche relevante MeSH-Bedingungen
Andere Studien-ID-Nummern
- 0206-01
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