Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Oct 1983
Differential lung ventilation with unilateral PEEP following unilateral hydrochloric acid aspiration in the dog.
Differential lung ventilation with positive end expiratory pressure (PEEP) improves pulmonary gas exchange when used in the supportive care of patients with severe unilateral or asymmetrical lung disease. Once the provision of selective PEEP to the two lungs is accomplished, the best method of partitioning the tidal volume between the two lungs is unknown. Twelve mongrel dogs were given a unilateral hydrochloric acid (HCl) aspiration injury. ⋯ In all three groups considered simultaneously, unilateral PEEP improved PaO2 and venous admixture. The equal tidal volume distribution was the only group to show a significant improvement in PaO2 at both PEEP increments (0 to 1.36 kPa and 2.72 kPa). There was a significant difference in tidal volume allocation between the three groups with the equal end-tidal and equal pause pressure groups only minimally ventilating the injured lung.(ABSTRACT TRUNCATED AT 250 WORDS)
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Acta Anaesthesiol Scand · Oct 1983
Case ReportsSubdural haematoma. A rare but life-threatening complication after spinal anaesthesia.
A 70-year-old patient developed severe headache after spinal anaesthesia. He was treated with an epidural autologous blood patch with only temporary relief. Three weeks after the spinal anaesthesia, the headache became more intense and was accompanied by nausea and vomiting. ⋯ The patient became unconscious and an acute CT scan revealed a large subdural haematoma. This was immediately evacuated and the patient made a good recovery. This case demonstrates that subdural haematoma should be considered as a possible aetiology in severe postspinal headache.
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Acta Anaesthesiol Scand · Oct 1983
Comparative StudyMeasurement of cardiac stroke volume during cesarean section: a comparison between impedance cardiography and the dye dilution technique.
Simultaneous determination of cardiac stroke volume by impedance cardiography and the dye dilution technique was compared in ten women undergoing elective cesarean section performed under general or epidural anesthesia. The influence of delivery and the anesthetic procedures used on stroke volume determination by the two methods was evaluated and compared. The correlation coefficients for measurements performed before and during anesthesia showed little variation and were largely unchanged after delivery of the child (r = 0.90-0.97). ⋯ However, there was no significant difference between the mean change in stroke volume determined by the two techniques during serial measurements. Impedance cardiography was found to be a safe, reliable, non-invasive technique for the measurement of changes in stroke volume during cesarean section. The ability of the impedance method to determine changes in stroke volume was unaffected by the anesthetic procedures employed or by delivery of the child.