Journal of anesthesia
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Journal of anesthesia · Oct 2015
Case ReportsDrug fever caused by propofol in the intensive care unit.
Few studies have reported that fever is caused by intravenous sedative drugs even though these agents are widely used. We present a case of propofol-induced drug fever. A 57-year-old woman underwent hepatic segmentectomy. ⋯ On day 5 after surgery, propofol infusion was discontinued and the patient was extubated. Her temperature of 37.7 °C at the discontinuation of propofol infusion, and rapidly decreased to 36.1 °C in the following 3 h. Propofol-induced drug fever must be considered in cases of fever of unknown origin when patients receive propofol and appear inappropriately well for the degree of fever that they have.
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Journal of anesthesia · Oct 2015
Randomized Controlled TrialEffect of ondansetron on post-dural puncture headache (PDPH) in parturients undergoing cesarean section: a double-blind randomized placebo-controlled study.
One of the most exhausting complications of spinal anesthesia, especially in parturients, is post-dural puncture headache (PDPH). This headache is not responsive to the usual pain killers. Ondansetron is a 5-HT3 receptor antagonist which is generally used for the prophylactic management of nausea and vomiting; however, studies have found that ondansetron might decrease the incidence of PDPH. Therefore, we aimed to evalute the effect of ondansetron on decreasing the incidence of PDPH. ⋯ Ondansetron (0.15 mg/kg) appeared to reduce the incidence of PDPH, as well as the incidence of hypotension and PONV, in parturients undergoing spinal anesthesia for cesarean section.
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Journal of anesthesia · Oct 2015
Effects of gas composition on the delivered tidal volume of the Avance Carestation.
Measurements with various flowmeters are affected by changes in gas mixture density. The Avance Carestation incorporates ventilator feedback controlled by a built-in flowmeter with a variable orifice sensor. We hypothesised that changes in the composition of delivered gas may cause changes in the delivered tidal volume by affecting the flow measurement unless appropriate corrections are made. ⋯ These results support our hypothesis and suggest that changing gas composition may alter delivered tidal volume of anesthesia machines with built-in ventilators that are feedback-controlled by uncorrected flowmeters due to changes in gas mixture density.
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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.