Annales françaises d'anesthèsie et de rèanimation
-
Ann Fr Anesth Reanim · Jan 1995
[Effects of mechanical ventilation with PEEP on right to left intra-cardiac shunt caused by patent foramen ovale].
To assess the presence of a patent foramen ovale (PFO) using colloid contrast transoesophageal echocardiography in mechanically ventilated patient with and without PEEP and it repercussion on PaO2. ⋯ This study suggests that mechanical ventilation with PEEP enhances an intracardiac right-to-left shunt through a PFO. This condition is responsible for the lack of improvement in blood oxygenation when PEEP is added. When a PFO is present all over the respiratory cycle, or when the oxygenation is worsened with PEEP, this positive pressure ventilation should be avoided. The deleterious consequences of mechanical ventilation on venous return may be minimized by partial ventilation and weaning from ventilator.
-
Ann Fr Anesth Reanim · Jan 1995
Randomized Controlled Trial Comparative Study Clinical Trial[Endotracheal intubation under propofol with or without vecuronium].
In order to test the hypothesis that under the association propofol-alfentanil-IV lidocaine the trachea could be intubated easily without an additional muscle relaxant, this study compared the intubation conditions when this association was combined or not with vecuronium. ⋯ In young healthy adults, without anaesthetic risk (emergency, full stomach) and without foreseen difficult intubation, the endotracheal tube can be inserted in convenient conditions without a muscle relaxant, under the association propofol-alfentanil-lidocaine iv.
-
Ann Fr Anesth Reanim · Jan 1995
Comparative Study Clinical Trial Controlled Clinical Trial[Cerebrovascular reactivity to CO2 during general anesthesia maintained with either isoflurane-N2O or propofol-N2O. A comparative study by transcranial Doppler velocimetry].
To compare, using transcranial doppler velocimetry (TDV), the cerebral blood flow velocity and CO2 reactivity during general anaesthesia maintained with either isoflurane-N2O-O2(IF) or propofol-N2O-O2 (PF) in adults with a normal brain. ⋯ During anaesthesia maintained with either isoflurane-N2O-O2 or propofol-N2O-O2, a change in PetCO2 results in similar changes in VS and VD. These anaesthetic agents preserve the cerebrovascular reactivity of the normal brain. The results of this study are in accordance with those obtained with other reference techniques in healthy volunteers. Transcranial doppler velocimetry can be a useful noninvasive tool of clinical research in neuroanaesthesia.
-
Ann Fr Anesth Reanim · Jan 1995
Review[Effects of anesthesia on postoperative micturition and urinary retention].
Postoperative micturition difficulties, considered as minor complications, have a high incidence. Acute urinary retention can follow all types of anaesthetics or operations. Surgical trauma to the pelvic nerves or to the bladder, postoperative oedema around the bladder neck, and pain-induced reflex spasm of the external and internal urethral sphincters may play a role in the development of urinary retention. ⋯ They should be encouraged to seat, stand or ambulate as early as possible. The alpha 1 adrenergic receptor blocking agents have been used for treatment of organic or functional urinary retention. It is essential to make sure the bladder empties regularly in the postoperative period, especially in day-case surgery or in patients receiving opioid analgesia or after epidural anaesthesia.