Influence of Temperature and pH Changes on Propofol Injection Pain
نویسندگان
چکیده
Methods: Two hundred patients referred to gastrointestinal or urologic surgery with general anaesthesiology were included in a prospective randomized, double-blind study. After routine monitoring, 5 mL of propofol at room temperature and 5 mL of propofol kept in the fridge was administered within 10 seconds to patients in Group 1 and Group 2, respectively. An investigator assessed pain intensity. Propofol temperature-pH were measured by another researcher.
منابع مشابه
Effect of lignocaine and pH on propofol-induced pain.
Propofol has the disadvantage of pain on injection. A higher partition of propofol in the aqueous phase of the preparation causes a higher incidence of pain on injection while addition of 1% lignocaine to propofol reduces pain. The low concentration of this local anaesthetic and the rapid pain relief observed indicates that mechanisms other than local anaesthesia are involved, that is change in...
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The purpose of this study was to examine possible peripheral mechanisms for the reduction of propofol injection pain by the addition of ketamine. We hypothesised that pH changes associated with the addition of ketamine to propofol decrease propofol-induced pain on injection. We compared the efficacy of intravenous ketamine pretreatment under tourniquet with ketamine added to the propofol. In th...
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