Biomedical subjects

S Bénéfice

Publications and source records attributed to S Bénéfice.

3 recordsLinked to original sources

PubMed2002

[Brainstem anesthesia after peribulbar anesthesia].

We report a case of pupilloplasty under peribulbar anaesthesia complicated by a brainstem anaesthesia requiring tracheal intubation and mechanical ventilation. Immediate outcome was good. We discuss the different mechanisms of this complication. The subarachnoidal (intrathecal) injection of local anaesthesic seems to be the most probable cause. The use of short needles should theoretically decrease the risk. Despite all these precautions, peribulbar anaesthesia should not be considered as an ordinary procedure.

Aged↗

PubMed1995

[Difficult intubation: a prospective evaluation of the Mallampati and Wilson tests].

This prospective study aimed to evaluate in 849 patients the Mallampati and Wilson scores for predicting a difficult intubation. All scheduled patients were included. Induction and tracheal intubation were carried out as usual. Intubation was deemed to have been difficult if any special procedure had been required (external compression excepted); difficult laryngoscopy was defined as grade 3 or 4 on the Cormack-Lehane scale. In accordance with these criteria, less than 36% of patients with difficult intubation or laryngoscopy were detected, with a high false positive rate (more than 75%) but a good negative predictive value (more than 90%). This study was not concordant with the results of the original studies. However, data from literature show a great variability of results between studies. Many factors may contribute to this variability: differences between samples of patients, evaluation of Mallampati or Wilson scale, protocols of induction and intubation or characterization of difficult intubation. This study suggests a poor reliability of the two tests.

Humans↗

PubMed1992

[Quality of sedation and neurologic evaluation following surgery of the posterior cranial fossa: the importance of propofol].

Following cerebral posterior fossa surgery, 23 patients were admitted in Intensive Care Unit for postoperative mechanical ventilation. Mean age was 45 +/- 16 years. Mean duration of surgical procedure was 09 h 20 min +/- 04 h 45 min. Heart rate, blood pressure, coma Glasgow scale, pupil reaction, respiratory pattern were recorded throughout the study. Following recovery from anaesthesia sedation was initiated by an intravenous bolus injection of propofol 2 mg.kg-1 followed by a continuous infusion starting at 1 mg.kg-1.h-1. The infusion rate was adjusted thereafter to ensure that the patient was sedated (Glasgow coma scale less than or equal to 6), unable to react to tracheal suction, well adapted to mechanical ventilation with a cardiovascular stability. Mean duration of sedation was 27 h 45 min +/- 04 h 45 min. Mean infusion rate of 3.81 mg.kg-1.h-1 allowed good sedation in 22 patients. There were no clinical changes in arterial pressure and heart rate. Propofol infusion was stopped transiently to assess neurologic status at 18 h +/- 02 h 45, 33 h 45 +/- 08 h 15, 49 h 10 +/- 16 h 50 after sedation onset. During these interruptions, the speed of recovery was assessed and arterial blood samples taken simultaneously. When the infusion was discontinued, adequate recovery was obtained in 48 +/- 26 min for 17 patients of 23, 64 +/- 58 min for 7 of 12, 70 +/- 65 min for 3 of 3.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗