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Updated: Feb 28, 2026

A Novel Rescue Technique for Difficult Intubation and Difficult Ventilation
Published on: January 17, 2011
Transnasal Humidified Rapid-Insufflation Ventilatory Exchange for Preoxygenation Before Cesarean Delivery Under
Maryse Hengen1, Rosalie Willemain, Alain Meyer
1From the *Service d'Anesthésie-Réanimation Chirurgicale and †Service de Gynécologie-Obstétrique, Hôpitaux Universitaires, Strasbourg, France; and ‡Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas.
Abstract:
Transnasal humidified rapid-insufflation ventilatory exchange has been shown to improve oxygenation and increase apnea time in difficult airway cases. It may also be beneficial in patients vulnerable to rapid desaturation due to limited pulmonary reserve. We report the use of transnasal humidified rapid-insufflation ventilatory exchange for preoxygenation before a cesarean delivery under general anesthesia in a patient with respiratory distress because of pneumonia and heart failure from severe mitral stenosis. To our knowledge, the use of this technique has not been previously reported in pregnant patients.
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