European journal of anaesthesiology
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Randomized Controlled Trial Multicenter Study
Emergence times and airway reactions during general anaesthesia with remifentanil and a laryngeal mask airway: A multicentre randomised controlled trial.
What did they do?
Kowark and friends randomised 343 patients across four German hospitals to receive desflurane, sevoflurane or propofol for maintenance anesthesia using a laryngeal airway for surgery expected to be up to 2 hours.
And they found?
There was no difference in airway reactions among the three groups, and the desflurane patients emerged (statistically) significantly faster.
Hang on...
But the difference in emergence times was, i) at most only 2 minutes, and ii) was a surrogate marker for what actually matters – when a patient leaves the PACU or hospital – which wasn't reported.
Additionally, the study protocol very prescriptively defined when volatiles were decreased (50% at 5 min before expected surgical finish) and ceased – the same for both Des and Sevo. Yet it is common practice to begin weaning Sevo earlier than Des if trying to achieve comparable emergence.
Could this even be applied to my patients?
Probably not. Unless you are in the habit of using remifentanil infusions (0.15 mcg/kg/min) for surgery that almost certainly does not justify its use and have access to uniquely European analgesics piritramide and metamizole.
The elephant in the room...
Why do we persist in trying to find new justifications for desflurane, given its expense and high environmental costs? (And for that matter, remifentanil?!).
This study demonstrates the well known faster pharmacokinetics of desflurane during an unnecessarily complex laryngeal mask anesthetic, and yet adds little to meaningful clinical outcomes.
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Randomized Controlled Trial Comparative Study
Comparison of the laryngeal mask airway supreme and the i-gel in paralysed elderly patients: A randomised controlled trial.
The laryngeal mask airway supreme (LMA-S) and i-gel are both popular second-generation supraglottic airway devices that have been widely studied in surgical patients, but their differences in clinical performance in the elderly are not clear. ⋯ Both the LMA-S and i-gel were used successfully and safely in elderly patients. However, the i-gel demonstrated better airway sealing than the LMA-S at insertion and during maintenance of anaesthesia.
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Randomized Controlled Trial
Lung recruitment prevents collapse during laparoscopy in children: A randomised controlled trial.
Capnoperitoneum and anaesthesia impair lung aeration during laparoscopy in children. These changes can be detected and monitored at the bedside by lung ultrasound (LUS). ⋯ The majority of children undergoing laparoscopy have anaesthesia-induced atelectasis. In most cases, lung collapse due to capnoperitoneum could have been prevented by recruitment manoeuvres followed by positive-end expiratory pressure.