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Understanding the value of patient spirometry
Patient spirometry measures airway pressures, flow, volumes, compliance and airway resistance breath-by-breath at the patient’s airway. The dynamic interrelationships of pressure and volume or flow and volume are displayed as graphical loops. In addition, the inspired and expired gas concentrations (CO2, O2 and anesthetic agents) are measured.
All parameters are measured through a single, lightweight flow sensor and gas sampler placed at the patient’s airway. The close-to-the-patient measurement is a sensitive and continuous reflector of patient’s ventilatory status, obtained independently of the ventilator used.
This guide explains how the D-lite™ pressure and flow sensor is used to calculate essential parameters including total positive end expiratory pressure, compliance and airway resistance. By showing sample of graphical loops, the guide shows how spirometry can help clinicians:
- Detect leaks and obstructions in the airway
- Monitoring changes during laparoscopy.
- Detect initiation of spontaneous breathing
Patient Spirometry is an excellent tool for managing the patient’s ventilation during anesthesia and critical care. Measurement at the airway delivers real patient values not influenced by hoses or other breathing system components. Saved reference loops allow fast visual detection of changes, help in adjusting optimal ventilator settings, and help in comparing actual and previous ventilatory status.
The system’s modular flexibility enables its use with a variety of ventilators and enables flexible change of modules between patients. Ventilatory and hemodynamic information display on a single screen to give a complete picture of patient status. Graphical and numerical trends are provided to help evaluate patients’ histories.
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