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ISSN 0185-3252 (Print)
Revista de la Asociación Médica del Centro Médico ABC

2017, Number 3

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An Med Asoc Med Hosp ABC 2017; 62 (3)

High-flow nasal cannula versus conventional oxygen therapy for patients undergoing gastrointestinal endoscopy

Benatar PF, Galaviz ODA, Chávez RMA, Olivares MH

Language: Spanish
References: 15
Page: 187-191
PDF size: 206.64 Kb.


ABSTRACT

Background: Gastrointestinal endoscopy procedures are becoming more frequent and complex. Most are performed under sedation, using oxygen through nasal cannulas. Newer techniques such as high-flow nasal cannulas provide continuous positive airway pressure, increased flow, and an increased inspired fraction of oxygen, decreasing the likelihood of hypoxemia. Objective: The aim of this study was to demonstrate the usefulness of this new therapy in patients undergoing endoscopy under sedation, comparing the incidence of hypoxemia against conventional nasal cannulas. Material and methods: The study was performed in 108 patients assigned according to the availability of equipment for the high-flow nasal cannula (Optiflow® Fisher-Paykel, New Zealand). Vital signs were recorded at the beginning and end of the procedure, saturation of oxygen in air at the beginning and the end of the procedure, anthropometry, and presence of respiratory pathology. The statistical analysis was performed with SPSS v22. Results: Of the 108 patients, 66 (61.1%) were women and 42 (38.9%) men; their mean age was 55 ± 17.49 years. Sixty-seven patients were enrolled in the conventional technique group and 41 patients in the high-flow group. There was a significant correlation between the oxygen delivery technique with the desaturation index (27, conventional/seven, high-flow group), measured by Chi square ( χ2), with a p = 0.009. Conclusions: High-low nasal cannulas proved to be superior in the prevention of desaturation episodes and patient comfort.


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