Journal of anesthesia
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Journal of anesthesia · Dec 2018
Heated humidified high-flow nasal oxygen prevents intraoperative body temperature decrease in non-intubated thoracoscopy.
In patients receiving non-intubated video-assisted thoracic surgery (NIVATS), transnasal humidified rapid-insufflation ventilatory exchange (THRIVE) has been applied instead of oxygen mask for better oxygenation. However, the THRIVE effects on intraoperative temperature decrease have not been investigated. ⋯ THRIVE effectively prevents intraoperative temperature decrease during NIVATS, especially in old patients.
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Journal of anesthesia · Dec 2018
The relationship between seizure in electroconvulsive therapy and pupillary response using an automated pupilometer.
Seizure duration and morphology, postictal suppression, and sympathetic nervous system activation are all recommended as assessments of adequate seizure in electroconvulsive therapy (ECT). However, blood pressure and heart rate are not typically assessed as part of sympathetic nervous system activation because of the administration of anesthetic or cardiovascular agents during ECT. Although the pupils are known to reflect to the activity of autonomic nervous system and the degree of brain damage, previous studies have not examined the relationship between seizure of electroconvulsive therapy and pupillary response. ⋯ The current findings suggest that pupillary constriction immediately after ECT could provide a helpful method for assessing the efficacy of ECT.
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Journal of anesthesia · Dec 2018
The effect of the volume of supra-inguinal injected solution on the spread of the injectate under the fascia iliaca: a preliminary study.
The fascia iliaca compartment is the compartment confined by the fascia iliaca (FI) and a muscular layer formed by the iliac- and psoas muscle. This compartment creates a virtual tunnel that contains the femoral nerve (FN), the obturator nerve (ON), and the lateral femoral cutaneous nerve (LFCN) of the lumbar plexus. In this pilot study, we aimed to determine the suggested volume needed to reach the three target nerves of the lumbar plexus (FN, ON, and LFCN) with a single-injection ultrasound-guided supra-inguinal fascia iliaca compartment (S-FICB). ⋯ In total, seven pelvic areas of four cadavers were evaluated on CT scan and dissected. Distribution of dye underneath the FI in relation to the FN, ON, and the LFCN was recorded in all dissected cadavers. Combining CT and dissection findings, the suggested volume to reach the FN, ON, and LFCN with an S-FICB was 40 mL.
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Journal of anesthesia · Dec 2018
A new rocuronium formulation not causing vascular pain in a flexor reflex model of anesthetized rats.
Intravenous administration of the brand formulation of rocuronium bromide, currently used as a muscle relaxant, has been associated with vascular pain accompanied by withdrawal movements of the arm and wrist. The purpose of this study was to identify the cause of vascular pain induced by the brand formulation and to develop a new rocuronium formulation, not causing vascular pain, using a vascular pain-evoked flexor reflex response model of anesthetized rats. ⋯ Our findings suggest that the high acid concentration in the brand formulation buffer solution is the cause of vascular pain. The rocuronium formulation developed using a low-acid-concentration buffer solution might help eliminate vascular pain in the clinic.
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Journal of anesthesia · Dec 2018
Suppressed descending pain modulatory and enhanced sensorimotor networks in patients with chronic low back pain.
Although cerebral structural and functional changes were uncovered by neuroimaging in patients with chronic low back pain (CLBP), their associations remain to be clarified. We co-analyzed anatomical and functional magnetic resonance imaging data in those patients and tested whether cortical gray matter volume changes are associated with altered pain modulatory networks underlying chronification of pain. ⋯ Patients showed a decreased volume of cortical center for descending pain modulation and an increased volume of sensorimotor network, in association with suppressed descending pain modulatory and cerebellum-limbic networks and enhanced sensorimotor network during pain. Such structural and functional alterations might be part of cerebral pathophysiology of CLBP.