Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · May 2005
Randomized Controlled Trial Comparative Study Clinical TrialEfficacy of vertical infraclavicular plexus block vs. modified axillary plexus block: a prospective, randomized, observer-blinded study.
Despite containing severe risks, infraclavicular approaches to the brachial plexus gained increasing popularity. Likewise, the vertical infraclavicular plexus block improved anesthesia compared to the standard axillary approach but contains the risk of pneumothorax. Therefore we modified the standard axillary technique by inserting a proximal directed catheter, referred to as a high axillary plexus block. We prospectively compared quality and onset of neural blockade after vertical infraclavicular plexus block (VIP) and high axillary plexus block (HAP) in two randomized groups (30 patients in each). ⋯ While both techniques provide sufficient surgical anesthesia, vertical infraclavicular plexus block demonstrated a partially higher success rate and a faster onset than high axillary plexus block.
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Acta Anaesthesiol Scand · May 2005
Randomized Controlled Trial Clinical TrialIntentional lateral epidural catheter placement for anterior cruciate ligament reconstruction.
Unilateral epidural block might constitute a clinical option in lower limb orthopedic surgery. ⋯ These results suggest that the IUEC technique is a feasible and efficient method for providing anesthesia and analgesia for ACLR and is associated with a lower consume of anesthetics, less motor block and a reduced incidence of urinary retention.
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Acta Anaesthesiol Scand · May 2005
Randomized Controlled Trial Clinical TrialEffect of hypercapnia on arterial hypotension after induction of anaesthesia.
We evaluated the effectiveness of intentional hypercapnia against hypotension after induction of anaesthesia with thiopental and isoflurane (TI) or propofol (P). For each group, 24 patients were anaesthetized with thiopental 4 mg kg(-1) (TI) or propofol 2 mg kg(-1) (P) for tracheal intubation and then lightly anaesthetized with isoflurane at 0.6% end-expiratory concentration (TI) or by 6 mg kg(-1) h(-1) infusion of propofol (P). In both anaesthesia groups, patients were randomly assigned to either normocapnia (end-tidal CO(2) = 35 mmHg) or hypercapnia (end-tidal CO(2) = 45 mmHg), which were achieved through adjusting the tidal volume. ⋯ Hypercapnia prevented the decrease in SAP in TI but not in P. No patient in the TI-hypercapnia group experienced SAP below 100 mmHg, unlike those in the other groups. In conclusion, mild hypercapnia was effective in the prevention of hypotension in patients receiving thiopental followed by 0.6% end-expiratory isoflurane, but not in patients receiving 6 mg kg(-1) h(-1) propofol.
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Acta Anaesthesiol Scand · May 2005
Randomized Controlled Trial Clinical TrialA-line autoregression index monitoring to titrate inhalational anaesthesia: effects on sevoflurane consumption, emergence time and memory.
A-line autoregression index (AAI) is a parameter derived from auditory evoked potentials proposed as depth of anaesthesia monitor. We evaluated the effects of AAI guidance on sevoflurane consumption, emergence time, explicit and implicit memory. ⋯ AAI titration of anaesthesia allows a significant reduction in sevoflurane consumption and emergence time without significant effects on the incidence of explicit and implicit memory. Nevertheless the relationship between AAI and memory requires studies in larger groups of patients.