Pain Clinical Trial
Official title:
Ethyl Chloride Vapocoolant as Anesthesia for Arterial Punctures: A Randomized Clinical Trial
Ethyl chloride vapocoolant sprays provide transient skin anesthesia within seconds of
application. The current investigation aim is to compare the effect of ethyl chloride based
vapocoolant spray to placebo in reducing pain associated with arterial puncture for gasometry
determinations.
The investigators will conduce a double-blind randomized placebo-controlled trial at
Emergency Department.
We will enroll patients who come to Emergency Department who need an arterial gasometry
determination. Patients will be randomized to intervention-group (ethyl chloride vapocoolant
sprays will be usad before arterial puncture) or to placebo-group (alcohol spray as placebo
will be used before arterial puncture.) and after the puncture they will rate their pain
using a 10 points visual analogue scale.
Single-blind, randomized placebo-controlled trial in an emergency department of Hospital de Basurto in Bilbao, Spain. Patients for whom arterial blood gas analysis had been ordered will be included. They will be randomly assigned to receive application of the experimental ethyl chloride spray or a placebo aerosol spray of a solution of alcohol in water. The assigned spray will be applied just before arterial puncture. The main outcome variable is pain intensity reported on an 11-point numeric rating scale. ;
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