Journal of anesthesia
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Journal of anesthesia · Jan 2003
Randomized Controlled Trial Clinical TrialVital capacity induction with 8% sevoflurane and N2o causes cerebral hyperemia.
Little is known about the influence of high-dose sevoflurane on cerebral volume. We evaluated induction time and cerebral blood volume with 8% sevoflurane using the "vital capacity induction" technique. ⋯ Vital capacity inhalation of 8% sevoflurane produces a faster loss of eyelash reflex than does 5% sevoflurane or propofol, but increases cerebral blood volume.
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Journal of anesthesia · Jan 2003
Randomized Controlled Trial Comparative Study Clinical TrialTemperature and humidity of the Dräger Cato anesthetic machine circuit.
The Dräger Cato anesthetic machine (Dräger, Lübeck, Germany) effectively humidifies and warms anesthetic gases, because it has a built-in hotplate to heat the breathing system, and expired gas passes through the CO2 absorbent three times during one breath. In the present study, we measured the temperature and absolute humidity (AH) of the anesthetic circuit in the Dräger Cato machine with and without heat moisture exchangers (HME), and compared them with those in another anesthetic machine, the Aestiva/5 (Datex-Ohmeda, Helsinki, Finland). ⋯ The present study indicates that the Dräger Cato machine was more effective in warming and humidifying respiratory gas than the Aestiva/5, and that Aestiva/5 without HME does not reach the optimal temperature and humidity ranges, even if minimal flow anesthesia (0.51 x min(-1)) is performed.
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Journal of anesthesia · Jan 2003
Randomized Controlled Trial Clinical TrialComparison of adjuvant anesthetics for propofol induction.
Fentanyl was compared with nitrous oxide/sevoflurane as an adjuvant anesthesia to propofol during induction. ⋯ From the standpoints of hemodynamics and drug cost, fentanyl is preferable to N2O/sevoflurane inhalation as an adjuvant to propofol during induction, because mask ventilation for more than 3 min was required for satisfactory endotracheal intubation.
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The low-dose technique of combined spinal/epidural analgesia is to be welcomed in obstetrics. Its merits include rapid onset of analgesia, with the flexibility of an epidural technique, and high maternal satisfaction. It is a safe and effective technique. ⋯ At our institution, we do not delay spinal anesthesia for urgent cesarean section in order to administer a predetermined volume of fluid; in such cases, we simultaneously administer a fluid preload and spinal anesthesia. Recent studies regarding the use of cell savers for blood conservation in obstetrics are based on small numbers of patients. These studies show great promise, particularly with the modern emphasis on avoiding blood transfusion, which can be massive in this usually young patient population.
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Journal of anesthesia · Jan 2003
Comparative Study Clinical TrialThe effect of craniotomy location on postoperative pain and nausea.
At least one retrospective study has suggested that the need for postoperative control of pain and nausea depends on the location of the cranial surgery. This prospective study was performed to examine the hypothesis that patients who have had infratentorial craniotomy experience more severe pain and more frequent nausea than those with supratentorial procedures. ⋯ There were no significant differences in the severity of pain or the frequency of nausea based on the craniotomy site.