Propofol injection pain will be surfed by up to 70-80 percentage by the Patients who induced by propofol. Temperature of Operating room was set to a certain range in normal clinical practice, which is 22- 26 centigrade. Warm feeling will make skin vassal dilated and more blood will pass through to bring more heat out of our body. It had been reported that a bigger venous vessels will get less propofol injection pain. The investigators hypothesis that Patients who stayed in a warmer room temperature will surf less injection pain while compare to a normal setting room temperature.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
DOUBLE
Enrollment
120
Patients before general anesthesia induction will send to warmer operation Injection pain was accessed with (Visual analogous scale)VAS.
Chenzhou No.1 People's hopital
Chenzhou, Hunan, China
RECRUITINGintensity of injection pain
intensity of injection pain was reported by patient themselves before loss their awareness.
Time frame: 3 months
numbers of lidocaine rescues for severe injection pain
when unbearable injection happens,patient could ask for stop and 20mg lidocaine was injected as rescue treatments.
Time frame: 3 months
incidences of injection pain
Numeric Visual Analog Scale of injection \>2 was counted as injection pain happens,the total incidence of injection was compared in two groups.
Time frame: 3 months
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