Journal of anesthesia
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Journal of anesthesia · Oct 2015
Comparative StudyEffects of topical and intravenous JM-1232(-) infusion on cerebrovascular reactivity in rats.
A novel short-acting benzodiazepine receptor agonist, JM-1232(-), has been shown to have a sedative/hypnotic effect and wide safety margin. However, its effect on cerebral vessels is not well known. Therefore, we investigated the cerebrovascular reactivity to topical and intravenous JM-1232(-) and during hypotension or hypercapnia with intravenous administration of JM-1232(-). ⋯ Hypercapnia dilated pial arterioles before and after JM-1232(-) infusion. The diameters of pial arterioles did not change during hypotension before or after intravenous JM-1232(-) infusion. These results indicate that topical JM-1232(-) has a dilative effect on pial arterioles and that intravenous administration of JM-1232(-) may not affect cerebrovascular reactivity to hypotension or hypercapnia.
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Journal of anesthesia · Oct 2015
Sarpogrelate hydrochloride, a serotonin 5HT2A receptor antagonist, ameliorates the development of chronic hypoxic pulmonary hypertension in rats.
The purpose of the present study was to determine if sarpogrelate hydrochloride (SPG), a serotonin 5HT2A receptor antagonist, prevented the development of chronic hypoxia-induced pulmonary hypertension (PH) and hypertensive pulmonary vascular remodeling. ⋯ The administration of SPG ameliorated the development of chronic hypoxic PH and hypertensive pulmonary vascular changes.
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Journal of anesthesia · Oct 2015
Emergency endotracheal intubation-related adverse events in bronchial asthma exacerbation: can anesthesiologists attenuate the risk?
Airway management in severe bronchial asthma exacerbation (BAE) carries very high risk and should be performed by experienced providers. However, no objective data are available on the association between the laryngoscopist's specialty and endotracheal intubation (ETI)-related adverse events in patients with severe bronchial asthma. In this paper, we compare emergency ETI-related adverse events in patients with severe BAE between anesthesiologists and other specialists. ⋯ Anesthesiologist as first exposure was independently associated with attenuated risk of ETI-related adverse events in patients with severe BAE. The skill and knowledge of anesthesiologists should be applied to high-risk airway management whenever possible.
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Journal of anesthesia · Oct 2015
Ultrasound imaging of the musculocutaneous nerve of infants, preschool children, and school children.
The purpose of this imaging study was to investigate whether the musculocutaneous nerve could be visualized ultrasonographically in childhood and to assess how its visualization changes with age. Forty-two children participated in this prospective imaging study. ⋯ For school-aged children, distal visualization of the musculocutaneous nerve reached 100 %. The musculocutaneous nerve is detectable in childhood by use of ultrasonography; success of detection was high for all the age groups examined.
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Journal of anesthesia · Oct 2015
The effective bolus dose of remifentanil to facilitate laryngeal mask airway insertion during inhalation induction of sevoflurane in children.
The additional administration of remifentanil during inhalation induction with sevoflurane could provide better conditions for laryngeal mask airway (LMA) insertion than sevoflurane alone. This study was designed to evaluate the 50 % effective bolus dose (ED50) and 95 % effective bolus dose (ED95) of remifentanil required for LMA insertion in children during inhalation induction with sevoflurane. ⋯ The ED50 and ED95 of remifentanil for successful LMA insertion in children were estimated to be 0.176 (0.168) and 0.268 μg/kg during inhalation induction with 2.1 % sevoflurane.