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Helium is an inert gas with a density almost one-seventh of that of air. Based on its properties breathing a mixture of helium and oxygen (heliox) will lead to a reduction in resistance through narrowed airways and consequently decreases the work of breathing. Participating infants with RSV acute bronchiolitis will be supplied with heliox (ration of 21 oxygen and 79 helium) delivered through a flow nasal cannula to evaluate heliox effect in improving their oxygenation. Heliox will act as an additive therapy to improve oxygenation in patients with lower respiratory tract infection caused by respiratory Syncytial Virus (RSV) and will decrease the need for more complicated therapies.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Heliox group | Active Comparator | receive Helium oxygen mixture 21:79 via nasal cannula 2L/min |
|
| Air group | Active Comparator | receive oxygen 21%via nasal cannula 2L/min |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Heliox | Drug | Heliox (21:79) via nasal cannula 2 litter per minutes |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Improvement in oxygenation | Arterial blood samples will be withdrawn through an arterial stab to determine partial pressure of arterial oxygen (PaO2) | change from baseline at 24 hours after treatment |
| Measure | Description | Time Frame |
|---|---|---|
| improvement of respiratory distress | measured by the Modified Wood's Clinical Asthma Score | change from baseline at 24 hours after treatment |
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Inclusion Criteria:
Exclusion Criteria:
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| ID | Term |
|---|---|
| D018357 | Respiratory Syncytial Virus Infections |
| ID | Term |
|---|---|
| D018186 | Pneumovirus Infections |
| D018184 | Paramyxoviridae Infections |
| D018701 | Mononegavirales Infections |
| D012327 | RNA Virus Infections |
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| ID | Term |
|---|---|
| C038949 | heliox |
| D000388 | Air |
| ID | Term |
|---|---|
| D001272 | Atmosphere |
| D004777 | Environment |
| D055669 | Ecological and Environmental Phenomena |
| D001686 | Biological Phenomena |
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| Air |
| Drug |
Air 21% via nasal cannula 2 litter per minutes |
|
| D014777 | Virus Diseases |
| D007239 | Infections |
| D008685 |
| Meteorological Concepts |
| D004778 | Environment and Public Health |