The Experts below are selected from a list of 24 Experts worldwide ranked by ideXlab platform
Qingguo Yang - One of the best experts on this subject based on the ideXlab platform.
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efficacy of dexmedetomidine injected into Axillary Sheath in alleviating tourniquet pain during brachial plexus block with ropivacaine
Chinese Journal of Anesthesiology, 2013Co-Authors: Mei Jin, Ke Sun, Qingguo YangAbstract:Objective To evaluate the efficacy of dexmedetomidine injected into Axillary Sheath in alleviating the tourniquet pain during brachial plexus block with ropivacaine.Methods Sixty ASA physical status Ⅰ or Ⅱ patients,aged 18-60 yr,weighing 52-85 kg,scheduled for the replantation of amputated finger,were randomly divided into 2 equal groups (n =30 each):ropivacaine group (group R) and dexmedetomidine mixed with ropivacaine group (group DR).All patients underwent Axillary brachial plexus block guided by a nerve stimulator.When the intensity of electric stimulation ≤ 0.4 mA,flexion of fingers or wrist still existed,and the local anesthetic was injected into the Axillary Sheath.0.5％ ropivacaine 40ml was injected in group R.0.5％ ropivacaine mixed with 100μg dexmedetomidine 40ml was injected in group DR.The pressure of inflation was set at 200-250mmHg,and the stress duration was 120 min.Tourniquet pain and the level that the patients could tolerate was evaluated using visual analog scale (VAS) at 120 min of stress status.The patient' s satisfaction with anesthesia was rated and the development of adverse cadiovascular events and local and systemic adverse reactions were recorded.Excessive sedation was measured with Ramsay score in group DR.Results Compared with group R,the tourniquet pain that the patients could tolerate was significantly increased,the severity of tourniquet pain was reduced and the incidence of adverse cadiovascular events was decreased in group DR (P ＜ 0.01).No serious tourniquet-related complications were observed in both groups.No patients developed excessive sedation in group DR.Conclusion Dexmedetomidine 100μg injected into the Axillary Sheath can safely and effectively alleviate the tourniquet pain when used during brachial plexus block with ropivacaine. Key words: Dexmedetomidine; Amides; Brachial plexus; Analgesia
Mei Jin - One of the best experts on this subject based on the ideXlab platform.
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efficacy of dexmedetomidine injected into Axillary Sheath in alleviating tourniquet pain during brachial plexus block with ropivacaine
Chinese Journal of Anesthesiology, 2013Co-Authors: Mei Jin, Ke Sun, Qingguo YangAbstract:Objective To evaluate the efficacy of dexmedetomidine injected into Axillary Sheath in alleviating the tourniquet pain during brachial plexus block with ropivacaine.Methods Sixty ASA physical status Ⅰ or Ⅱ patients,aged 18-60 yr,weighing 52-85 kg,scheduled for the replantation of amputated finger,were randomly divided into 2 equal groups (n =30 each):ropivacaine group (group R) and dexmedetomidine mixed with ropivacaine group (group DR).All patients underwent Axillary brachial plexus block guided by a nerve stimulator.When the intensity of electric stimulation ≤ 0.4 mA,flexion of fingers or wrist still existed,and the local anesthetic was injected into the Axillary Sheath.0.5％ ropivacaine 40ml was injected in group R.0.5％ ropivacaine mixed with 100μg dexmedetomidine 40ml was injected in group DR.The pressure of inflation was set at 200-250mmHg,and the stress duration was 120 min.Tourniquet pain and the level that the patients could tolerate was evaluated using visual analog scale (VAS) at 120 min of stress status.The patient' s satisfaction with anesthesia was rated and the development of adverse cadiovascular events and local and systemic adverse reactions were recorded.Excessive sedation was measured with Ramsay score in group DR.Results Compared with group R,the tourniquet pain that the patients could tolerate was significantly increased,the severity of tourniquet pain was reduced and the incidence of adverse cadiovascular events was decreased in group DR (P ＜ 0.01).No serious tourniquet-related complications were observed in both groups.No patients developed excessive sedation in group DR.Conclusion Dexmedetomidine 100μg injected into the Axillary Sheath can safely and effectively alleviate the tourniquet pain when used during brachial plexus block with ropivacaine. Key words: Dexmedetomidine; Amides; Brachial plexus; Analgesia
Ke Sun - One of the best experts on this subject based on the ideXlab platform.
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efficacy of dexmedetomidine injected into Axillary Sheath in alleviating tourniquet pain during brachial plexus block with ropivacaine
Chinese Journal of Anesthesiology, 2013Co-Authors: Mei Jin, Ke Sun, Qingguo YangAbstract:Objective To evaluate the efficacy of dexmedetomidine injected into Axillary Sheath in alleviating the tourniquet pain during brachial plexus block with ropivacaine.Methods Sixty ASA physical status Ⅰ or Ⅱ patients,aged 18-60 yr,weighing 52-85 kg,scheduled for the replantation of amputated finger,were randomly divided into 2 equal groups (n =30 each):ropivacaine group (group R) and dexmedetomidine mixed with ropivacaine group (group DR).All patients underwent Axillary brachial plexus block guided by a nerve stimulator.When the intensity of electric stimulation ≤ 0.4 mA,flexion of fingers or wrist still existed,and the local anesthetic was injected into the Axillary Sheath.0.5％ ropivacaine 40ml was injected in group R.0.5％ ropivacaine mixed with 100μg dexmedetomidine 40ml was injected in group DR.The pressure of inflation was set at 200-250mmHg,and the stress duration was 120 min.Tourniquet pain and the level that the patients could tolerate was evaluated using visual analog scale (VAS) at 120 min of stress status.The patient' s satisfaction with anesthesia was rated and the development of adverse cadiovascular events and local and systemic adverse reactions were recorded.Excessive sedation was measured with Ramsay score in group DR.Results Compared with group R,the tourniquet pain that the patients could tolerate was significantly increased,the severity of tourniquet pain was reduced and the incidence of adverse cadiovascular events was decreased in group DR (P ＜ 0.01).No serious tourniquet-related complications were observed in both groups.No patients developed excessive sedation in group DR.Conclusion Dexmedetomidine 100μg injected into the Axillary Sheath can safely and effectively alleviate the tourniquet pain when used during brachial plexus block with ropivacaine. Key words: Dexmedetomidine; Amides; Brachial plexus; Analgesia
F S Rucci - One of the best experts on this subject based on the ideXlab platform.
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preferential channelling of anaesthetic solution injected within the perivascular Axillary Sheath
European Journal of Anaesthesiology, 1994Co-Authors: P Pippa, F S RucciAbstract:Preferential channelling of anaesthetic solution injected into the perivascular Axillary Sheath was investigated in 40 patients undergoing elective orthopaedic upper-limb surgery. Three needles, with different approaches and inclinations, were inserted near the three main terminal branches of the brachial plexus using an Axillary approach. Separate boluses of anaesthetic solution (12 ml of a mixture of equal parts of 0.5% bupivacaine with 1:200,000 adrenaline and 2% lignocaine) were injected in random order through each needle, and back flow through the other two needles was noted. Back flow was observed, mainly in the needle nearest to the radial nerve during injection of the anaesthetic solution in the superior and inferior aspects of the brachial artery, and in the needle close to the ulnar nerve when the injection was performed posterior to the artery, near the radial nerve. These results could be related to the trapping of anaesthetic solution in unconnected compartments and to the slope of the needle injecting the anaesthetic solution which spreads preferentially along a gradient following the needle shaft direction.
P Pippa - One of the best experts on this subject based on the ideXlab platform.
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preferential channelling of anaesthetic solution injected within the perivascular Axillary Sheath
European Journal of Anaesthesiology, 1994Co-Authors: P Pippa, F S RucciAbstract:Preferential channelling of anaesthetic solution injected into the perivascular Axillary Sheath was investigated in 40 patients undergoing elective orthopaedic upper-limb surgery. Three needles, with different approaches and inclinations, were inserted near the three main terminal branches of the brachial plexus using an Axillary approach. Separate boluses of anaesthetic solution (12 ml of a mixture of equal parts of 0.5% bupivacaine with 1:200,000 adrenaline and 2% lignocaine) were injected in random order through each needle, and back flow through the other two needles was noted. Back flow was observed, mainly in the needle nearest to the radial nerve during injection of the anaesthetic solution in the superior and inferior aspects of the brachial artery, and in the needle close to the ulnar nerve when the injection was performed posterior to the artery, near the radial nerve. These results could be related to the trapping of anaesthetic solution in unconnected compartments and to the slope of the needle injecting the anaesthetic solution which spreads preferentially along a gradient following the needle shaft direction.