Anaesthesia
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Letter Case Reports
A close shave: air embolism following laceration of central venous catheter.
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Randomized Controlled Trial Comparative Study Clinical Trial
The effect of tunnelling on epidural catheter migration.
A prospective, randomised study of 82 patients having postoperative epidural analgesia was performed to determine whether the tunnelling of an epidural catheter influences its migration. Tunnelling of the catheter subcutaneously for a distance of 5 cm reduced the incidence of inward migration of 1 cm or more (p < 0.01) compared to a standard method of fixation with a transparent adhesive dressing. ⋯ Sixty two percent (n = 26) of tunnelled catheters remained within 0.5 cm of their original position compared to 38% (n = 16) of non-tunnelled catheters, although this difference was not statistically significant. Outward catheter migration was not reduced by subcutaneous tunnelling.
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Randomized Controlled Trial Comparative Study Clinical Trial
Effect of intravenous fluid preload on vasoactive peptide secretion during Caesarean section under spinal anaesthesia.
The endogenous release of the vasoactive peptides atrial natriuretic peptide and endothelin-1 may modify maternal haemodynamic responses to a rapid intravenous volume load used to prevent hypotension at elective Caesarean delivery under spinal anaesthesia. Twenty-two healthy pregnant women were examined during elective Caesarean section at term pregnancy. ⋯ A slight decrease in endothelin-1 levels was found during colloid infusion. A significant increase in the release of atrial natriuretic peptide in response to volume load may decrease vascular tone and initiate diuresis, thereby attenuating the effect of volume load on blood pressure during elective Caesarean delivery.