Yumika Koizumi

Learn More
UNLABELLED Bispectral index (BIS) integrates various electroencephalographic (EEG) parameters into a single variable. However, the exact algorithm used to synthesize the parameters to BIS values is not known. The relationship between BIS and EEG parameters was evaluated during nitrous oxide/isoflurane anesthesia. Twenty patients scheduled for elective(More)
A 38-year-old woman was brought to hospital in an unconscious condition due to hypoglycemic coma. At 23 years of age she was diagnosed as having insulin-dependent diabetes mellitus. She had been treated with insulin but the control of her blood sugar was inadequate. Emergency endotracheal intubation was performed and she began to breathe spontaneously. Two(More)
We have reported that large concentrations of intrathecal local anesthetics increase glutamate concentrations in the cerebrospinal fluid (CSF) and cause neuronal injury in rabbits. In the current study we determined whether an alpha-amino-3-hydroxy-5-methylisoxazole-4-propionic acid (AMPA) receptor antagonist, YM872, administered intrathecally, reduces(More)
We investigated the incidence of the postoperative nausea and vomiting (PONV) following cardiac surgery with cardiopulmonary bypass. We conducted a prospective study of 65 cases with direct interviews by anesthesiologists who are blind to this protocol every 6 hours during ICU stay. There were no differences in age, body mass index, dose of fentanyl,(More)
The effect of sevoflurane and nitrous oxide anesthesia on the auditory brainstem response (ABR) was studied in 70 infants and children ranging in age between 1 month and 15 years. The latencies in ABR under a non-anesthetic state are no longer in the waves originating from the central portion in younger subjects. This tendency was recognized under ketamine(More)
BACKGROUND Target controlled infusion (TCI) for propofol allows anesthesiologists to target constant blood concentrations of propofol. However, the pharmacokinetic parameters in TCI system do not take account of the patient's age, make up and gender. We evaluated the relationship between body fat percentage and the estimated effect site propofol(More)
Surgical stimulation typically results in an activation of electroencephalographic activity. In some instances, painful stimulation in the presence of inadequate anesthesia results in a suppression of the electroencephalogram. This phenomenon has been referred to as a "paradoxical arousal." In our daily practice, we have noted a marked decrease in the(More)
An 87-year-old man was scheduled for the 11th transurethral bladder tumor resection (TURBT). He had a history of non-active syphilis for 21 years, diabetes mellitus for 7 years, and severe emphysema. Preoperative physical examination of the lower extremities, revealed loss of knee-jerk reflex, and loss of vibratory and proprioceptive perception. Four years(More)
  • 1