Cahiers d'anesthésiologie
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The physiological basis of neurostimulation is recalled and its use for the placement of needles for neural blockade described. After an account of available equipment, the author gives his reasons for preferring some of it. ⋯ The indication for the use of neurostimulation in the practice of infiltration anaesthesia are enumerated and its advantages stressed. Finally its limitations and complications are presented.
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Cahiers d'anesthésiologie · Jan 1992
Randomized Controlled Trial Comparative Study Clinical Trial[A comparative study of the cost of open-circuit as opposed to closed-circuit ventilation].
The authors compared two open randomized groups of patients undergoing surgery through general anaesthesia. Group 1 consisted of 54 patients ventilated by a Siemens 900 B ventilator in open circuit, and group 2, 56 patients ventilated by an ELSA de Gambro ventilator in a closed circuit. Comparative hour cost for nitrous oxide (N2O), oxygen (O2) and halogen gas, Enflurane, Isoflurane, was noted. ⋯ In order to improve the effective cost of close circuit, the authors proposed: the use of closed circuit ventilation for more than 3 hours surgery, gas saturation in closed circuit after denitrogenation--which demands the use of halogen infjectors, and lime in containers cheaper than disposable cartridges. Respecting the above criteria, the total hour cost in close circuit fell to 4.90 FF, gain of 63% against open circuit. For O2 et N2O, the hour cost goes from 1.34 FF in close circuit to 13.28 FF in open circuit, 90% economy.(ABSTRACT TRUNCATED AT 250 WORDS)
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The laryngeal mask (LM) is a new concept developed by Brain. Easily inserted, the LM allows appropriate ventilation without the disadvantages of either the facial mask or the endotracheal intubation with its own complications. The limits of its use concern all the cases of reduction of thoracopulmonary compliance and full stomach. ⋯ Moreover, the LM is widely used for ENT and ophthalmic surgeries, in paediatric and adult procedures. Many cases of foreseeable or unforeseeable difficult intubation have been resolved by the insertion of a LM, allowing secondary intubation through the mask. Further investigations are required in order to evaluate the real limits and indications for its extended use.
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Five children with cancer pain were given continuous intrathecal morphine or fentanyl infusion associated with bupivacaine 0.25% without epinephrine. The morphine daily dose varied from 0.1 mg.kg-1 to 1 mg.kg-1, the maximum daily dose of fentanyl was 0.1 mg.kg-1 associated with the same dose of intravenous fentanyl, and the maximum daily dose of bupivacaine was 1 mg.kg-1. Intrathecal treatment was started after oral and epidural morphine treatment had failed. ⋯ A satisfactory analgesia was achieved until demise occurred. In all children, urinary retention was the only side effect of the therapy. Therefore, intrathecal opioid and bupivacaine may be indicated after oral morphine therapy has failed in children with advanced cancer refractory pain.