Delivering continuous positive airway pressure (CPAP) with novel nasal PAP mask assembly is an effective technique for improving safety in patients receiving an interscalene block and sedation for shoulder arthroscopy, new research suggests.
Some people may be given a sedative after a regional peripheral nerve block. Desaturation commonly occurs in patients receiving moderate to deep sedation, according to researchers from Rutgers Robert Wood Johnson Medical School, in Piscataway Township, N.J. Supplemental oxygen supplied through a nasal cannula is often insufficient for maintaining adequate oxygenation.
The original technically simple and effective (TSE) mask, a 12-by-12–inch plastic sheet used to cover a patient’s nose and mouth, has been shown to increase oxygenation during upper endoscopy, providing a fraction of inspired oxygen of 40% to 60% with oxygen flows of 4 L per minute via nasal cannula (Anesthesiology 2005;102:484). The researchers presented a case study showing the efficacy of the nasal TSE-PAP mask assembly for maintaining oxygen saturation in a patient with autonomic neuropathy under regional anesthesia supplemented by sedation.