Estimation of energy expenditure
The apparatus estimates energy expenditure using ventilator measurements, eliminating the need for indirect calorimeters and reducing risks, by calculating inspiratory carbon dioxide concentration from known medical air composition and utilizing existing ventilator data, thus providing accurate and safe energy expenditure assessment for mechanically ventilated patients.
Patent Information
- Application Number
- PCT/EP2012/074523
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2011-12-06
- Filing Date
- 2012-12-05
- Publication Date
- 2013-06-13
AI Technical Summary
Existing methods for estimating energy expenditure in mechanically ventilated patients are inaccurate and risky, as they require disconnecting the patient from the ventilator for indirect calorimeter measurements, which is dangerous and undesirable.
An apparatus that estimates energy expenditure using measurements already available from the ventilator, such as gas concentration and volume, without the need for an external indirect calorimeter, by utilizing sensors to measure expiratory oxygen concentration and calculating inspiratory carbon dioxide concentration based on known medical air composition, thereby simplifying the setup and reducing the risk of perturbation.
This approach provides accurate energy expenditure estimation without the need for additional sensors or external devices, reducing the risk to the patient and improving the accuracy of nutritional planning in intensive care units.