Journal of anesthesia
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Journal of anesthesia · Jan 2008
Randomized Controlled Trial Comparative StudyThe comparative effects of sevoflurane versus isoflurane on cerebrovascular carbon dioxide reactivity in patients with previous stroke.
The use of volatile anesthetics is reportedly related to altered cerebrovascular carbon dioxide (CO2) reactivity. We examined the comparative effects of sevoflurane versus isoflurane on cerebrovascular CO2 reactivity in patients with previous stroke. ⋯ Our findings suggest that, in patients with previous stroke, cerebrovascular CO2 reactivity under sevoflurane anesthesia was lower than that under isoflurane anesthesia.
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Journal of anesthesia · Jan 2008
Randomized Controlled TrialAdding intrathecal morphine to unilateral spinal anesthesia results in better pain relief following knee arthroscopy.
Intrathecal morphine is administered to provide profound and prolonged analgesia, and to treat acute postoperative pain. We compared the effectiveness of hyperbaric bupivacaine alone and in combination with morphine for unilateral spinal anesthesia in patients undergoing knee arthroscopy. ⋯ We conclude that unilateral spinal anesthesia with hyperbaric bupivacaine plus 0.16 mg morphine is preferable to hyperbaric bupivacaine alone with respect to analgesic requirement, duration of analgesia, and VAS values.
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Journal of anesthesia · Jan 2008
Randomized Controlled Trial Comparative StudyBoth clonidine and metoprolol modify anesthetic depth indicators and reduce intraoperative propofol requirement.
Beta-blockers have been used in the past to decrease the depth of anesthesia, but the results are conflicting. However, beta-blockers are known to suppress electroencephalographic activities. This study was carried out to assess the effect of metoprolol on anesthetic depth indicators. We also compared the effect of metoprolol in reducing propofol requirements. ⋯ Our study showed that, like clonidine, metoprolol attenuated the hemodynamic response to intraoperative stimuli and also had a sparing effect on the propofol dose requirement.
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Journal of anesthesia · Jan 2008
Randomized Controlled TrialThe effects of remifentanil or acetaminophen with epidural ropivacaine on body temperature during labor.
Epidural analgesia is associated with hyperthermia during labor and presumably causes it, although no convincing mechanism has been postulated. It seems likely that fever associated with pyrogenic factors related to labor is suppressed by opioids, whereas it is expressed normally in patients given epidural analgesia. We examined this hypothesis and the possible etiology of temperature elevation in labor. ⋯ Our results are consistent with the theory that low-dose opioids inhibit fever in patients not given epidural analgesia. However, in view of the negative results, the hypothesis of epidural-induced hyperthermia may be questionable.
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Journal of anesthesia · Jan 2008
Letter Randomized Controlled Trial Comparative StudyCardiovascular responses to tracheal intubation with the Airway Scope (Pentax-AWS).