Related Experiment Video
Updated: Oct 20, 2026

Preoxygenation Techniques for Tracheal Intubation in Critically Ill Adults Utilizing Oxygen Mask and Noninvasive Ventilation
Published on: December 5, 2025
[Different approaches to long-term O2 therapy (LTOT) in patients using intermittent positive pressure ventilation]
Background:
Until now there is no conclusion about a distinguished long-term O2 therapy in patients using IPPV.
Patients And Methods:
24 patients (6 women, 18 men, mean age 60 years, mean length of IPPV 15.6 months, mean length of long-term O2 therapy 16.7 months) with IPPV and long-term O2 therapy were studied by the topical and the past dose and the length of long-term O2 therapy.
Results:
1. Thirteen patients had the highest need for oxygen under strain with same need under IPPV and daytime. 2. The distribution among the others was different, 3 patients showed an elevated need for oxygen from IPPV to day-time to activity, 3 needed oxygen only under strain. 3. Changing the length was necessary in 4 patients. 4. The individual dose was changed in the course in 18 patients, reduced in 4, raised in 6 and both in 8 patients.
Conclusion:
1. A distinguished long-term O2 therapy with testing the need in rest, under IPPV and in activity is convenient. 2. Regular controls are necessary because of the individual changings.
Related Concept Videos
Mechanical Ventilation III: Noninvasive Ventilation
Noninvasive Positive-Pressure Ventilation (NIPPV)
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue, improving...
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Mechanical Ventilation II: Invasive Ventilation
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...
Ventilatory Modes
There are three ventilatory modes: full support, partial support, and spontaneous. These are described below.
Full Support Modes
Full support modes include controlled mechanical ventilation, continuous mandatory...
Mechanical Ventilation I: Indication and Settings