Journal of clinical anesthesia
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To investigate changes in stroke volume variation (SVV) by both induced hypertension (pressor test) and hypotension (depressor test), and also by induced hypotensive anesthesia in patients with good cardiac function. ⋯ SVV does not misinterpret preload dependency assessment of patients receiving medications to increase or to lower blood pressure.
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To determine the exact mechanism underlying spinal anesthesia-induced hypotension in the elderly patient. ⋯ A decrease in SVR, not CO, is the main mechanism of hypotension seen during spinal anesthesia in elderly patients.
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A case of temporary quadriplegia following a continuous thoracic paravertebral block in an adult patient scheduled for video-assisted thoracoscopy is presented. An 18-gauge Tuohy needle was inserted under direct vision by the surgeon but the tip of the catheter was not localized. Postoperatively, the patient developed temporary quadriplegia 90 minutes after the start of a continuous infusion of ropivacaine 0.2%. Imaging studies showed that the catheter was localized in the intrathecal space.
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To determine the incidence and contributing factors of complications for patients receiving regional ophthalmic anesthesia. ⋯ Peribulbar block complications were rare. In this series, experience of caregivers and axial and needle length were not contributing factors.