Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Nov 1998
Randomized Controlled Trial Comparative Study Clinical TrialSubarachnoid and intravenous PCA versus bolus administration for postoperative pain relief in orthopaedic patients.
Patient-controlled analgesia (PCA) with intravenous piritramide and subarachnoid bupivacaine was studied during postoperative pain management in comparison with nurse-administered bolus injections. ⋯ PCA with CSA was more effective than nurse-administered bolus-administration of bupivacaine, while the present study failed to show superiority of i.v. PCA over i.v. bolus-administration of piritramide. PCA using the subarachnoid route is a promising concept for treatment of postoperative pain in orthopaedic patients, while the PCA piritramide regime of this study warrants improvement.
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Acta Anaesthesiol Scand · Nov 1998
Randomized Controlled Trial Comparative Study Clinical TrialPuncture technique and postural postdural puncture headache. A randomised, double-blind study comparing transverse and parallel puncture.
This clinical study was conducted in order to investigate the effect of two different orientations of the bevel during dural puncture on development of postural postdural puncture headache (PPDPH). ⋯ Dural puncture with the bevel of the needle transverse to the longitudinal axis of the dural cylinder gave significantly more cases of PPDPH than puncture with the bevel parallel to this axis even when using a 27-g Quincke needle. When using Quincke bevelled needles care must be taken to assure that the orientation of the bevel is parallel to the longitudinal axis of the dural sac.
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Acta Anaesthesiol Scand · Nov 1998
Randomized Controlled Trial Clinical TrialIs the recovery profile of mivacurium independent of the rate of decay of its plasma concentration in patients with normal plasma cholinesterase activity?
The duration of action of muscle relaxants is poorly correlated to the rate of decay of their plasma concentration. The plasma concentration of mivacurium may rapidly decrease below its active concentration because of the extensive hydrolysis of mivacurium. By inflating a tourniquet on one upper limb for 3 min after the administration of atracurium, mivacurium or vecuronium, we studied the influence of the initial decline of their plasma concentration on their effect. ⋯ The results suggest that the rate of decline of the plasma concentration of mivacurium is so rapid, that a very low and almost clinically ineffective concentration is present as soon as 3 min after its administration. The results also indicate that the recovery from a mivacurium-induced neuromuscular blockade is not influenced by the rate of decay of its plasma concentration in patients with genotypically normal plasma cholinesterase.
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Acta Anaesthesiol Scand · Nov 1998
Use of the laryngeal mask airway during ophthalmic surgery results in stable circulation and few complications: a prospective audit.
This study was performed to investigate airway complications related to Laryngeal Mask Airway (LMA) use in a selected group of paediatric patients undergoing ophthalmic surgery. ⋯ LMA can be regarded as a safe product for airway maintenance during ophthalmic surgery with a stable circulation and few complications.
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Acta Anaesthesiol Scand · Nov 1998
1 MAC-incision sevoflurane prevents explicit awareness during surgical skin incision and tracheal intubation.
This study tested the hypothesis that 1 MAC-incision anesthesia secures unconsciousness during surgical skin incision and tracheal intubation. ⋯ It is concluded that 1MAC-incision sevoflurane secures unconsciousness during surgical skin incision and tracheal intubation.