Canadian journal of anaesthesia = Journal canadien d'anesthésie
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Comparative Study Clinical Trial
Phonomyographic measurements of neuromuscular blockade are similar to mechanomyography for hand muscles.
Phonomyography consists of recording low frequency sounds created during muscle contraction. In this study, phonomyography of three regions of the hand was compared to mechanomyography of the adductor pollicis. ⋯ There was good agreement between mechanomyographic measurements at the adductor pollicis muscle and phonomyographic measurements at the thenar and the first dorsal interosseus muscles. Phonomyography of those two muscles could be used interchangeably with mechanomyography of adductor pollicis for clinical purposes.
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Comparative Study
In cadavers, directly measured mucosal pressures are similar for the Unique and the Soft Seal laryngeal mask airway devices.
We compare the Soft Seal and Unique single-use, plastic laryngeal mask airway devices with respect to intracuff pressure, directly measured mucosal pressure and in vitro elastance. ⋯ Intracuff pressures and in vitro elastance are higher for the Unique than the Soft Seal, but mucosal pressures are similar suggesting that the airway morbidity will be similar.
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Case Reports
Total airway obstruction during local anesthesia in a non-sedated patient with a compromised airway.
To report a case of complete upper airway obstruction after topicalization with lidocaine in a completely conscious patient with partial upper airway obstruction. ⋯ Dynamic airflow limitation associated with local anesthesia of the upper airway may lead to complete upper airway obstruction in a compromised airway. The main cause may be the loss of upper airway muscle tone, exacerbated by deep inspiration during panic.
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Editorial Comment
Anesthesia-related medication error: time to take action.