Articles: nerve-block.
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Randomized Controlled Trial Comparative Study Clinical Trial
Periprostatic administration of local anesthesia during transrectal ultrasound-guided biopsy of the prostate: a randomized, double-blind, placebo-controlled study.
To evaluate the effect of periprostatic infiltration with local anesthesia on the level of discomfort associated with transrectal ultrasound-guided needle biopsy of the prostate. Transrectal ultrasound-guided needle biopsy of the prostate is the standard procedure to diagnose prostate cancer. ⋯ Periprostatic injection of lidocaine represents a simple and safe procedure that significantly reduces discomfort during probe manipulation and biopsy. We recommend this procedure in men undergoing transrectal ultrasound-guided prostate biopsy.
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Reg Anesth Pain Med · Mar 2003
Case Reports Clinical TrialContinuous lumbar plexus block: Use of radiography to determine catheter tip location.
The purpose of this article is to document where a lumbar plexus catheter introduced by the posterior approach will track and to evaluate the benefit of using systematic radiographic verification of catheter placement. ⋯ Epidural spread of local anesthetic during lumbar plexus block should be expected to be relatively common. It can be easily identified clinically with fractionated doses of local anesthetic. The catheter tip was identified in the epidural space by radiographic verification in only 1.8% of cases. This expensive procedure is therefore unnecessary except when an unusual location is suspected, but not necessary to confirm a catheter assumed to be correctly positioned.
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Anesthesiol Clin North America · Mar 2003
ReviewMechanisms and management of an incomplete epidural block for cesarean section.
Epidural blockade is an important option for anesthesia in parturients undergoing abdominal delivery. Despite the multiple benefits of this method, there is at least one significant downside--a relatively high occurrence of unsatisfactory anesthesia that requires intervention. Depending on the presumed mechanism of epidural block failure and other clinically relevant factors (e.g., timing of diagnosis, urgency of the procedure, and so forth), certain effective measures are recommended to successfully manage this demanding situation. ⋯ When inadequate epidural block becomes apparent during surgery there are limited alternatives. Depending on the origin and the pattern of inadequate anesthesia, options may include psychological support, supplementation with a variety of inhalational and intravenous agents, and local anesthetic infiltration. Induction of general anesthesia is typically left as a backup option, but must be strongly considered if the patient continues to have pain/discomfort.
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Reg Anesth Pain Med · Mar 2003
Case ReportsCentral nervous system toxicity following the administration of levobupivacaine for lumbar plexus block: A report of two cases.
Central nervous system and cardiac toxicity following the administration of local anesthetics is a recognized complication of regional anesthesia. Levobupivacaine, the pure S(-) enantiomer of bupivacaine, was developed to improve the cardiac safety profile of bupivacaine. We describe 2 cases of grand mal seizures following accidental intravascular injection of levobupivacaine. ⋯ Although levobupivacaine may have a safer cardiac toxicity profile than racemic bupivacaine, if adequate amounts of levobupivacaine reach the circulation, it will result in convulsions. Plasma concentrations sufficient to result in central nervous system toxicity did not produce manifestations of cardiac toxicity in these 2 patients.