Oxygen management in mechanically ventilated patients: A multicenter prospective observational study.

Purpose: To observe arterial oxygen in relation to fraction of inspired oxygen (FO) during mechanical ventilation (MV).

Materials And Methods: In this multicenter prospective observational study, we included adult patients required MV for >48h during the period from March to May 2015. We obtained FO, PaO and SaO from commencement of MV until the 7th day of MV in the ICU.

Inspiratory Tube Condensation During High-Flow Nasal Cannula Therapy: A Bench Study.

Background: High-flow nasal cannula (HFNC) therapy provides better humidification than conventional oxygen therapy. To allay loss of vapor as condensation, a servo-controlled heating wire is incorporated in the inspiratory tube, but condensation is not completely avoidable. We investigated factors that might affect condensation: thermal characteristics of the inspiratory tube, HFNC flow, and ambient temperature.

Performance of ventilators compatible with magnetic resonance imaging: a bench study.

Background: Magnetic resonance imaging (MRI) is indispensable for diagnosing brain and spinal cord abnormalities. Magnetic components cannot be used during MRI procedures; therefore, patient support equipment must use MRI-compatible materials. However, little is known of the performance of MRI-compatible ventilators.

Hyperoxemia in mechanically ventilated, critically ill subjects: incidence and related factors.

Background: Excessive supplemental oxygen causes injurious hyperoxemia. Before establishing the best P(aO2) targets for mechanically ventilated patients, it is important to understand the incidence of hyperoxemia and related factors. We investigated oxygenation in mechanically ventilated subjects in our ICU and evaluated factors related to hyperoxemia (P(aO2) > 120 mm Hg) at 48 h after initiation of mechanical ventilation.

Humidification performance of two high-flow nasal cannula devices: a bench study.

Introduction: Delivering heated and humidified medical gas at 20-60 L/min, high-flow nasal cannula (HFNC) creates low levels of PEEP and ameliorates respiratory mechanics. It has become a common therapy for patients with respiratory failure. However, independent measurement of heat and humidity during HFNC and comparison of HFNC devices are lacking.

Correction: Temperature of gas delivered from ventilators.

[This corrects the article on p. 6 in vol. 1, PMID: 25705400.