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This study was aimed to compare pain levels from arterial blood gas (ABG) sampling performed with vapocoolant spray in comparison to placebo.
Previous studies of vapocoolant sprays for reducing pain were mainly on venopuncture with inconsistent results. There was only one prospective open labeled controlled study on arterial blood gas sampling with ethyl chloride which did not show effectiveness. This study will assess the efficacy and tolerability of a topical alkane vapocoolant spray for arterial puncture in adults in comparison to control spray.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Vapocoolant spray | Experimental | Vapocoolant is administered in 20 centimeters distance for 20 seconds to the patients as anesthetic before ABG. |
|
| Water spray | Placebo Comparator | The Patients in this arm will receive water spray as anesthetic before ABG. |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Vapocoolant spray | Drug | The Vapocoolant spray containing alkane is applied for 20 seconds. |
|
| Measure | Description | Time Frame |
|---|---|---|
| puncture pain | 30 seconds after ABG was performed, the patients would be asked about the puncture pain in verbal numerical pain scale. | 30 seconds after ABG |
| Measure | Description | Time Frame |
|---|---|---|
| Vapocoolant application pain | 30 seconds after ABG was performed, the patients would be asked about the spray application pain in verbal numerical pain scale. | 30 seconds affter procedure completion |
| number of puncture attempts |
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Inclusion Criteria:
Exclusion Criteria:
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| Name | Affiliation | Role |
|---|---|---|
| Shervin Farahmand, M.D. | Tehran University of Medical Sciences | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Imam Khomeini hospital complex | Tehran | Tehran Province | Iran |
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| Water spray | Drug | This spray is covered so the patient and the investigator can not find the spray type out. |
|
The number of ABG sampling attempts is recorded 30 seconds after procedure.
| 30 seconds after procedure |