Acta anaesthesiologica Scandinavica
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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.
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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.
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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.
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Acta Anaesthesiol Scand · Sep 1999
Randomized Controlled Trial Comparative Study Clinical TrialAxillary brachial plexus block with ropivacaine 7.5 mg/ml. A comparative study with bupivacaine 5 mg/ml.
Ropivacaine is less cardiotoxic than bupivacaine and may be used in higher doses in order to increase the quality of a block. The aim of this study was to compare the efficacy and safety of 40 ml ropivacaine 7.5 mg/ml (300 mg) and 40 ml bupivacaine 5 mg/ml (200 mg) for axillary plexus block. ⋯ Ropivacaine 7.5 mg/ml, 40 ml, produces axillary plexus block of similar onset and duration but better quality than 40 ml of bupivacaine 5.0 mg/ml.
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Acta Anaesthesiol Scand · Sep 1999
Vasopressin and angiotensin II in blood pressure control during isoflurane anesthesia in rats.
Hormonal systems such as vasopressin (AVP) and the renin-angiotensin-aldosterone system (RAS) have been reported to become activated during anesthesia and surgery. The purpose of this study was to examine the relative importance of AVP and angiotensin II (AII) in blood pressure control during isoflurane anesthesia in rats. ⋯ It is concluded that AVP contributes to the maintenance of blood pressure when the autonomic nervous system (ANS) and/or RAS are blocked during isoflurane anesthesia. SAR infusion leads to hypotension during anesthesia, but not in conscious rats. These findings indicate that AII is of importance for blood pressure maintenance during isoflurane anesthesia in rats, and that apparent pressor effects of AVP come into play when RAS and/or ANS are blocked.