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Oral mask ventilation is more effective than face mask ventilation after nasal surgery.

Abstract：

OBJECTIVE:To evaluate and compare the face mask (FM) and oral mask (OM) ventilation techniques during anesthesia emergence regarding tidal volume, leak volume, and difficult mask ventilation (DMV) incidence. DESIGN:Prospective, randomized, crossover study. SETTING:Operating room, training and research hospital. SUBJECTS:American Society of Anesthesiologists physical status I and II adult patients scheduled for nasal surgery. INTERVENTIONS:Patients in group FM-OM received FM ventilation first, followed by OM ventilation, and patients in group OM-FM received OM ventilation first, followed by FM ventilation, with spontaneous ventilation after deep extubation. The FM ventilation was applied with the 1-handed EC-clamp technique. The OM was placed only over the mouth, and the 1-handed EC-clamp technique was used again. A child's size FM was used for the OM ventilation technique, the mask was rotated, and the inferior part of the mask was placed toward the nose. MEASUREMENTS:The leak volume (MVleak), mean airway pressure (Pmean), and expired tidal volume (TVe) were assessed with each mask technique for 3 consecutive breaths. A mask ventilation grade ≥3 was considered DMV. MAIN RESULTS:DMV occurred more frequently during FM ventilation (75% with FM vs 8% with OM). In the FM-first sequence, the mean TVe was 249±61mL with the FM and 455±35mL with the OM (P=.0001), whereas in the OM-first sequence, it was 276±81mL with the FM and 409±37mL with the OM (P=.0001). Regardless of the order used, the OM technique significantly decreased the MVleak and increased the TVe when compared to the FM technique. CONCLUSION:During anesthesia emergence after nasal surgery the OM may offer an effective ventilation method as it decreases the incidence of DMV and the gas leak around the mask and provides higher tidal volume delivery compared with FM ventilation.

journal_name

J Clin Anesth

journal_title

Journal of clinical anesthesia

authors

Yazicioğlu D,Baran I,Uzumcugil F,Ozturk I,Utebey G,Sayın MM

doi

10.1016/j.jclinane.2015.12.008

subject

Has Abstract

pub_date

2016-06-01 00:00:00

pages

64-70

eissn

0952-8180

issn

1873-4529

pii

S0952-8180(16)00029-5

journal_volume

pub_type

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Oral mask ventilation is more effective than face mask ventilation after nasal surgery.