The Effect of Different Degree of Temperature on Levobupivacaine Spinal Anesthesia

Spinal Anesthetic Toxicity

levobupivacaine,spinal anesthesia ,temperature

This study will be conducted to evaluate the effect of different temperature on the spinal anesthesia characteristics and incidence of complications

Regional anesthesia techniques are also superior to systemic opioids agents with regard the analgesic profile and adverse effects .Spinal anesthesia is the most commonly used technique due to its unmatchable reliability,simplicity and cost-effectiveness. It provides a fast and effective onset of sensory and motor block, excellent muscle relaxation and prolonged postoperative analgesia . Bupivacaine is commonly used local anesthetics because of its long duration of action and combined motor and sensory blockade. However, it has many drawbacks .It has a high propensity to cause hypotension and bradycardia. There is also cardiac toxicity.Levobupivacaine is an attractive alternative to bupivacaine because of the lower affinity for cardiac sodium channels and reducing the risk of cardiac toxicity.Moreover ,the isobaric levobupivacaine had more stability in cerebrospinal fluid and thus lead to more predictable drug spread, decreasing the incidence of hypotension and bradycardia. But its main disadvantage is the delayed onset . A number of strategies have been used to hasten the onset of local anesthesia .The addition of fentanyl mixtures of local anesthetics and alkalization of the local anesthetics all shorten the onset time of sensory block. Recently the warming of the anesthetic agents (namely, lidocaine and bupivacaine) to 37° C hastens the sensory block in various surgical settings . Up till now there is no study suggestive of any appropriate degree of temperature as adjuvant .Hence the present study will be conducted to evaluate the effect of different temperature on spinal anesthesia characteristics and the incidence its complication

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