Automatic evaluation of a filling volume of an oesophageal balloon catheter
AssigneeMaquet Critical Care AB
InventorMagnus HALLBÄCK
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Abstract
The present disclosure relates to a method for automatic evaluation of a filling volume of an oesophageal balloon catheter (26) inserted into a mechanically ventilated patient (3). The method comprises obtaining (S3-S4) samples of an airway pressure, Paw, and an oesophageal pressure, Pes, of the patient during an occlusion period in which respiration of the patient is prevented, evaluating (S5) the filling volume of the oesophageal balloon catheter by determining a ratio, ΔPes/ΔPaw, between Pes and Paw from a regression analysis of the Pes and Paw samples, and communicating (S6) a result of the evaluation to a user.
Claims16
1-15. (canceled)
A method for automatic evaluation of a filling volume of an oesophageal balloon catheter inserted into a mechanically ventilated patient, comprising:
- obtaining samples of an airway pressure, Paw, of the patient during an occlusion period in which respiration of the patient is prevented;
- obtaining samples of an oesophageal pressure, Pes, of the patient during the occlusion period;
- evaluating the filling volume of the oesophageal balloon catheter by determining a ratio, ΔPes/ΔPaw, between Pes and Paw from a regression analysis of the Pes and Paw samples;
- and
- communicating a result of the evaluation to a user.
A system for automatic evaluation of a filling volume of an oesophageal balloon catheter inserted into a mechanically ventilated patient, comprising:
- a first pressure sensor obtaining samples of an airway pressure, Paw, of the patient during an occlusion period in which respiration of the patient is prevented;
- a second pressure sensor obtaining samples of an oesophageal pressure, Pes, of the patient during the occlusion period;
- and
- a computer processing the Pes and Paw samples,
- wherein the computer is configured to
- evaluate the filling volume of the oesophageal balloon catheter by determining a ratio, ΔPes/ΔPaw, between Pes and Paw from a regression analysis of the Pes and Paw samples, and
- cause a result of the evaluation to be communicated to a user.
Dependencies are inferred from the claim text.