Acta anaesthesiologica Sinica
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Acta Anaesthesiol. Sin. · Dec 2002
Randomized Controlled Trial Clinical TrialThe tracheal detecting-bulb: a new device to distinguish tracheal from esophageal intubation.
The tracheal detecting-bulb (TDB) is a diagnostic tool for confirmation of tracheal intubation. Capnography is also accepted as a standard way for such confirmation. The purpose of this investigation was to determine whether the results by TDB agreed with those by capnography. ⋯ The TDB is a valuable diagnostic technique for confirming tracheal intubation as it could correctly detect esophageal or tracheal intubation of the tracheal tube in all our 400 patients. The results of using TDB agree with the results of using capnography.
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Acta Anaesthesiol. Sin. · Sep 2002
Randomized Controlled Trial Comparative Study Clinical TrialThe macroscopic changes of tracheal mucosa following tight versus loose control of tracheal tube cuff pressure.
Tracheal mucosal lesions have been reported following intubation anesthesia. This has been mostly attributed to improper cuff pressure leading to ischemic damages of the tracheal mucosa. In this study macroscopic changes of tracheal mucosa at the site of cuff inflation were evaluated endoscopically after "tight method" of cuff pressure control using a special water manometer. ⋯ Tight control of cuff pressure can minimize the incidence and severity of macroscopic lesions of tracheal mucosa at the site of cuff inflation.
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Acta Anaesthesiol. Sin. · Sep 2002
Randomized Controlled Trial Clinical TrialCardiac output measurement during cardiac surgery: esophageal Doppler versus pulmonary artery catheter.
Bolus thermodilution cardiac output (BCO) measurement has been considered as the "gold standard" for cardiac output (CO) measurement. However, it requires placement of a pulmonary artery (PA) catheter, and questions have been raised regarding the risk/benefit ratio of this invasive technique. Furthermore, great variations between measurements have been reported. Continuous thermodilution CO (CCO) measurement is reported to be a better alternative, but it still requires the placement of a PA catheter. Esophageal echo-Doppler ultrasonography (ED) provides non-invasive continuous measurement of CO (ED-CO). This study was thus designed to compare the agreement between ED-CO and both thermodilution techniques (BCO and CCO). ⋯ Esophageal echo-Doppler ultrasonography is a satisfactory alternative for cardiac output measurement because it gives a value in good agreement with CCO measurement. With significant between-measurement variations, the accuracy and precision of BCO are uncertain, and it should not be considered as the "gold standard".
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Acta Anaesthesiol. Sin. · Jun 2002
Randomized Controlled Trial Clinical TrialCan neostigmine reduce propofol injection pain?
Neostigmine has been found to cause peripheral analgesia. We used venous retention technique to evaluate whether neostigmine displayed peripheral analgesic effect in reducing propofol injection pain. ⋯ With one-minute venous retention, 0.5 mg neostigmine (1 ml) could produce peripheral analgesia to some degree in reducing propofol injection pain. However, its analgesic effect was inferior to 1 ml of 2% lidocaine.
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Acta Anaesthesiol. Sin. · Mar 2002
Randomized Controlled Trial Comparative Study Clinical TrialA comparative study of the safety and efficacy of 0.5% levobupivacaine and 0.5% bupivacaine for epidural anesthesia in subjects undergoing elective caesarean section.
Levobupivacaine is the S(-)-enantiomer of the racemic bupivacaine. Data of pharmacological studies suggest that levobupivacaine has a lower potential of toxicity for central nervous and cardiovascular systems than does bupivacaine. The present study was undertaken to compare the safety and efficacy between levobupivacaine and bupivacaine in epidural anesthesia for Cesarean delivery. ⋯ The onset and fade-out of sensory and motor blockade, quality of anesthesia, muscle relaxation and overall quality of anesthesia as assessed were comparable between two groups. No significant maternal or neonatal adverse events were found between the treatment groups. In comparison, levobupivacaine had the efficacy and safety profile equivalent to bupivacaine in epidural anesthesia for Caesarean section.