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Study aim
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Using the results and information of this study to control the patient's pain after removing the chest tube
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Design
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Randomized, superiority, parallel group trial with double blinded outcome assessment. Randomization is analyzed with SPSS software. there will be 50 smaples from patients that refer to goletan or imam hospital of ahvaz.
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Settings and conduct
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The study will be conducted on the patients who visited the ICU center of Golestan and Imam Ahvaz hospitals in 2011-02. During the study, the anesthesia resident prepares the medicine and the fellowship doctor injects the pain medicine to the patients. The responsible student completes the relevant questionnaire. Patients, anesthesiology resident, pain fellowship doctor and student do not know which drug is injected into which patient.
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Participants/Inclusion and exclusion criteria
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Admission: age 18 to 60 years, physical condition, body mass index less than 40 kg/m2, no history of drug or alcohol abuse, no pregnancy or breastfeeding, no history of coagulopathy or use of anticoagulants, mutation fraction above 30%, no history of block cardiac conduction, consciousness level above 14, no hepatitis, no history of psychiatric disease
No need for complementary renal treatment, no neuropathy
Failure to enter: sensitivity to the study drugs and unwillingness of patients to cooperate
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Intervention groups
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In both groups, ropivacaine is stable at 0.4 cc/kg of 0.2% solution. In group D1, 0.5 micrograms/kg of dexmedetomidine of body weight and in group D2, 1 microgram/kg of dexmedetomidine of body weight was added to the ropivacaine solution and injected according to the mentioned method.
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Main outcome variables
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groups of study,pain score, heart rate, systolic blood pressure, diastolic blood pressure, amount of narcotic drug use, oxygen saturation, duration of walking, duration of stay in ICU, time