IPI chart The IPI incorporates four patient parameters (end-tidal CO2 and respiratory rate measured by capnography, as well as pulse rate and blood oxygenation SpO2 as measured by pulse oximetry) into a single<unk>  value. The IPI value on the patient monitor indicates the patient ventilatory status, where a score of 10 is normal, indicating optimal<unk>  status, and a score of 1 or 2 requires immediate intervention. The IPI algorithm was developed based on the data from a group of medical experts (anesthesiologists, nurses, respiratory therapists, and physiologists) who evaluated cases with varying parameter values and whom assigned an IPI value to a predefined patient status. A mathematical model was built using patient normal ranges for these parameters and the ratings given to various combinations of the parameters by these professionals. Fuzzy logic, a mathematical method which mimics human logical thinking, was used to develop the IPI model. Clinical validation studies indicate that the IPI value produced by the IPI algorithm accurately reflects the patient's ventilatory status. In studies on both adult and pediatric patients, in which experts’ ratings of ventilatory status were collected along with IPI data, the IPI scores were found to be highly correlated with the experts’ annotated ratings. Studies conducted to validate the<unk>  also concluded that the single numeric value of IPI along with IPI trend may be valuable for promoting early awareness to changes in patient ventilatory status and in simplifying the monitoring of patients in busy clinical environments.
Integrated pulmonary index
Vital capacity
Oxygenation index
Pulmonary wedge pressure
Alveolar gas equation
Transpulmonary pressure
Mandatory minute ventilation
Diffusing capacity for carbon monoxide