Anaesthesia and intensive care
-
Anaesth Intensive Care · Jun 1994
Randomized Controlled Trial Comparative Study Clinical TrialRectal indomethacin for analgesia after appendicectomy in children.
A prospective randomised controlled trial comparing rectal indomethacin with placebo was performed in children. Thirty children aged seven years and over undergoing open appendicectomy were given suppositories of either indomethacin 2 mg/kg or placebo. Suppositories were given at the conclusion of surgery and again 12 and 24 hours later. ⋯ After 36 hours, children given indomethacin had used 0.51 (SD 0.34) mg/kg, and children given placebo 0.91 (SD 0.46) mg/kg (P < 0.02). Pain scores measured with a visual analogue scale, sedation scores and the incidence of vomiting were similar in both groups. Children given indomethacin suppositories used 44% less morphine than children given placebo, and at the same time obtained similar postoperative analgesia.
-
Anaesth Intensive Care · Jun 1994
Depth of central venous catheterization: an audit of practice in a cardiac surgical unit.
Central venous catheter (CVC) depth relative to the cephalic limit of the pericardial reflection (CLPR) was assessed retrospectively in 100 adult patients from chest radiographs taken after admission to the intensive care unit. A well known landmark proved to be considerably influenced by parallax; therefore we located the CLPR by a new landmark, the junction of the azygos vein and the superior vena cava, identified by the angle of the right main bronchus and the trachea. ⋯ No case of cardiac tamponade secondary to erosion by a CVC could be remembered, or identified from records of routine departmental audit meetings, for the last ten years. Nevertheless, reported incidents of this complication have often been fatal and vigilance is necessary in any patient with a CVC.
-
We have assessed the performance of the Dräger Oxylog ventilator at high altitude using a decompression chamber and a lung simulator set to mimic the normal and non-compliant lung. In the normal lung, tidal volume increased by 28% at 2040 metres and by 106% at 9120 metres. A lesser change, but in the opposite direction, occurred in respiratory rate. ⋯ At 2040 and 9144 metres minute volume increased by 13% and by 45%, and rate decreased by 10% and 30% respectively. In the abnormal lung stimulation, similar, but slightly less marked, changes occurred in all variables. These changes are of sufficient magnitude to require frequent observation of tidal volume and respiratory rate during aircraft ascent and descent.