Respiratory mechanics data acquisition and analysis method and system based on esophageal pressure monitoring

Abstract

The invention relates to a respiratory mechanics data acquisition and analysis method and system, and the system comprises a flow velocity pressure sensor, an esophagus pressure sensor and a data analysis terminal. The data analysis terminal comprises at least one of the following modules: an esophageal pressure positioning module, a respiratory mechanics data analysis module, a cross-lung pressure calculation module, an airway pressure-volume ring calculation module, a WOB calculation module, an airway blocking module, a respiratory system compliance calculation module, a chest wall compliance calculation module, a lung compliance calculation module and an endogenous PEEP detection module. According to the technical scheme, the flow velocity, airway pressure and esophageal pressure data acquisition and analysis equipment provided by the invention synchronously acquires related data of respiratory mechanics with high resolution, and performs real-time or offline analysis on the data.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to a method and system for collecting and analyzing respiratory mechanics data based on esophageal pressure monitoring. Background technique [0002] Esophageal pressure monitoring provides a near non-invasive assessment of intrathoracic pressure, thereby obtaining parameters of respiratory mechanics that differentiate the lungs from the chest wall. In more than 50 years of application, esophageal pressure monitoring has been proven to be useful in the measurement of transpulmonary pressure, the assessment of respiratory work, the measurement of intrinsic positive end expiratory pressure (PEEPi), the identification of human-machine disorders, etc. It has good application value and provides rich information for the treatment of mechanically ventilated patients. In patients with acute lung injury (ALI) or acute respiratory distress syndrome (ARDS), positive end expiratory pressure (P...

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Problems solved by technology

[0003] However, esophageal pressure monitoring is not widely used clinically at present. An international multi-center large-scale cross-sectional study found that esophageal pressure monitoring is used in less than 1% of ARDS patients.

The relatively invasiveness of esophageal pressure monitoring is of course the main concern that restricts clinicians from using esophageal pressure monitoring in mild patients. However, in severe patients, a large proportion of clinicians still do not implement esophageal pressure monitoring due to lack of esophageal pressure monitoring methods

In the process of using esophageal pressure to guide the setting of mechanical ventilation parameters, some parameters such as respiratory muscle pressure (respiratory muscle pressure, Pmus) and work of breathing (work of breath, WOB) are complex to calculate and difficult to obtain at the bedside, resulting in clinicians even if Without esophageal pressure monitoring, it is difficult to obtain relevant results in time to guide clinical practice, which is also an important reason for limiting the promotion of esophageal pressure monitoring

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