Hydrofluoric Acid Burn Management – Case Presentation

Background: Hydrofluoric acid (HF) is an extremely dangerous weak inorganic acid, which can produce extensive burn lesions, depending especially on the solution concentration and exposure time, systemic toxicity occurring in patients with large burn areas, high concentration of acid or an extensive time of exposure. The subcutaneous infiltration and intravenous administration of calcium gluconate is essential for preventing dyselectrolytemia and severe pain appearance. Case summary: A 26-year-old man patient presented to our hospital after a hydrofluoric burn, secondary to an occupational accident. At the scene, the wound was irrigated with fresh water and topical calcium gluconate was applied. In the Emergency Department, we started the intravenous calcium gluconate administration, and in the Burn Unit it was injected subcutaneously and the pain was thus diminished. A prolonged QT interval was identified upon admission that has been corrected over the next few days. Particularly, the serum pseudocholinesterase levels were within normal range. The local treatment involved repeated copious lavage with sterile water and Betadine solution, the evolution being rapidly favorable with the burn lesions completely healed in the next week. Conclusion: HF burns are a very special type of chemical burn taking into account that exposure to a small quantity of solution can be life threatening and that the immediate treatment is mandatory in order to maximize the outcome. It is of vital importance that any medical facility had a chemical burn protocol

Post-anaesthesia pulmonary complications after use of muscle relaxants (POPULAR): a multicentre, prospective observational study

Background Results from retrospective studies suggest that use of neuromuscular blocking agents during general anaesthesia might be linked to postoperative pulmonary complications. We therefore aimed to assess whether the use of neuromuscular blocking agents is associated with postoperative pulmonary complications. Methods We did a multicentre, prospective observational cohort study. Patients were recruited from 211 hospitals in 28 European countries. We included patients (aged ≥18 years) who received general anaesthesia for any in-hospital procedure except cardiac surgery. Patient characteristics, surgical and anaesthetic details, and chart review at discharge were prospectively collected over 2 weeks. Additionally, each patient underwent postoperative physical examination within 3 days of surgery to check for adverse pulmonary events. The study outcome was the incidence of postoperative pulmonary complications from the end of surgery up to postoperative day 28. Logistic regression analyses were adjusted for surgical factors and patients’ preoperative physical status, providing adjusted odds ratios (ORadj) and adjusted absolute risk reduction (ARRadj). This study is registered with ClinicalTrials.gov, number NCT01865513. Findings Between June 16, 2014, and April 29, 2015, data from 22803 patients were collected. The use of neuromuscular blocking agents was associated with an increased incidence of postoperative pulmonary complications in patients who had undergone general anaesthesia (1658 [7·6%] of 21694); ORadj 1·86, 95% CI 1·53–2·26; ARRadj –4·4%, 95% CI –5·5 to –3·2). Only 2·3% of high-risk surgical patients and those with adverse respiratory profiles were anaesthetised without neuromuscular blocking agents. The use of neuromuscular monitoring (ORadj 1·31, 95% CI 1·15–1·49; ARRadj –2·6%, 95% CI –3·9 to –1·4) and the administration of reversal agents (1·23, 1·07–1·41; –1·9%, –3·2 to –0·7) were not associated with a decreased risk of postoperative pulmonary complications. Neither the choice of sugammadex instead of neostigmine for reversal (ORadj 1·03, 95% CI 0·85–1·25; ARRadj –0·3%, 95% CI –2·4 to 1·5) nor extubation at a train-of-four ratio of 0·9 or more (1·03, 0·82–1·31; –0·4%, –3·5 to 2·2) was associated with better pulmonary outcomes. Interpretation We showed that the use of neuromuscular blocking drugs in general anaesthesia is associated with an increased risk of postoperative pulmonary complications. Anaesthetists must balance the potential benefits of neuromuscular blockade against the increased risk of postoperative pulmonary complications