Anesthesia, essays and researches
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Intravenous dexmedetomidine is used as adjuvant during general anesthesia due to its sedative and analgesic effects. The present study was aimed to evaluate the effects of intravenous dexmedetomidine on sensory and motor block characteristics, hemodynamic parameters and sedation during subarachnoid block. ⋯ Intravenous dexmedetomidine in dosage of 0.5 μg/kg, administered after 20 min of subarachnoid block prolonged the duration of sensory and motor blockade with arousable sedation.
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It is known that, unilateral thoracic paravertebral block (TPVB) applications performed with general anesthesia provide satisfactory conditions for open cholecystectomy increase the quality of post-operative analgesia and patient comfort and decrease the frequency of post-operative nausea and vomiting. In this case report, the TPVB was presented which was performed for two patients with high risk of anesthesia who have been planned to undergo open cholecystectomy.
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To observe the various pressor responses to laryngoscopy and intubation in normotensive patient undergoing elective surgery under general anesthesia and use of three different attenuating doses (400, 800, 1200 mcg) of intranasal nitroglycerine administered five minutes before laryngoscopy and intubation, to observe the efficacy and safety. ⋯ Best results of attenuation of pressor response were seen with 400 and 800 micrograms of intranasal nitroglycerine. One thousand and two hundred micrograms dose caused maximum increase in heart rate and caused maximum fall in blood pressure, hence it is advisable to use increased dose with caution in attenuation of pressor response to laryngoscopy and intubation.
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Unanticipated difficult intubations on the operation table have often tested all the anesthetists' intubation skill. The understanding of the causative factor and accordingly using the correct instrument from the difficult intubation kit requires experience and thorough knowledge on the part of the anesthetist. We describe a case of difficult intubation due to scar contracture of anterior tonsillar pillar formed after a previous surgery.
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Pregabalin and clonidine have anti-nociceptive properties. This study assesses their efficacy in prolonging the analgesic effect of spinal anesthesia and post-operative analgesic requirement in patients undergoing vaginal hysterectomy. ⋯ Oral pregabalin (150 mg) prolongs the post-operative pain relief after spinal anesthesia but produces less sedation compared with oral clonidine (150 μg).