Acta anaesthesiologica Scandinavica
-
Acta Anaesthesiol Scand · Sep 1999
Randomized Controlled Trial Comparative Study Clinical TrialRopivacaine in peribulbar block: a comparative study with bupivacaine.
Ropivacaine is a new local anesthetic with alleged lower systemic toxicity and slightly lower potency as compared with bupivacaine. The present study aimed to evaluate the efficacy of ropivacaine in peribulbar block, as compared with that of bupivacaine. ⋯ Both local anesthetics were effective in inducing peribulbar block for intraocular surgery. A tendency was noted to a faster onset of peribulbar block with ropivacaine; nevertheless, both drugs had a high degree of success for this block.
-
Acta Anaesthesiol Scand · Sep 1999
Comparative StudyPermissive hypercapnia during thoracic anaesthesia.
While permissive hypercapnia is commonly practised in critical care, it remains unclear if the comparable manoeuvres are clinically acceptable during anaesthesia. This retrospective study aimed at describing the anaesthetic implications of hypercapnia associated with deliberate hypoventilation during thoracic surgery in patients with severe emphysema. ⋯ Although there are some limitations, this preliminary study indicates that hypercapnia around 100 mmHg during anaesthesia for thoracic surgery may not be associated with serious consequences.
-
Acta Anaesthesiol Scand · Sep 1999
Pneumoperitoneum in healthy humans does not affect central blood volume or cardiac output.
This study addresses the question of whether the elevation of the mean arterial pressure and central venous pressure in response to pneumoperitoneum for laparoscopic surgery is caused by increases in central blood volume and/or cardiac output. ⋯ In healthy anaesthetized subjects, the elevation of mean arterial pressure and central venous pressure in response to pneumoperitoneum was not caused by enhancement in cardiac output or central blood volume.
-
To identify individual factors and combination of factors predictive of reversal time (defined as time from neostigmine administration to train-of-four (TOF) ratio 0.70) from atracurium-induced neuromuscular block, the present study tested the following variables as possible predictors of reversal time: 1) degree of block at the time of antagonism as quantified by first response to TOF or double-burst stimulation (DBS); 2) time from last supplemental dose of atracurium to administration of neostigmine (pre-reversal time); and 3) time from administration of initial atracurium dose to T1 (the magnitude of the first twitch in TOF) recovered to 10% (duration of action of the initial dose of atracurium). ⋯ 1) T1 is a more important predictor for reversal time from atracurium-induced neuromuscular block than D1; 2) predictors differ with the degree of block: with T1 > 15%, T1 is the only significant predictor; with 0< T1 < or =15%, the duration of action of the initial dose and T1 are predictors for reversal time; with T1=0, the duration of action of the initial dose and pre-reversal time predict reversal time.
-
Acta Anaesthesiol Scand · Sep 1999
Case ReportsDoes use of propofol in heavy alcohol drinkers tend to discolor their urine?
A case in which the urine of a patient who was a heavy drinker turned pink when propofol was used for anesthesia is reported, and a new cause of the urine discoloration is proposed.