oxygen_saturation_index: Instantaneous Oxygen Saturation Index (OSI).

In jcasse/icueval: Analysis for icu data

Description

oxygen_saturation_index returns the instantaneous oxygen saturation index, for each encounter.

Usage

oxygen_saturation_index(interventions, vitals)

Arguments

interventions	data frame: provides interventions events chr: patient_id_encounter chr: Variable.Name num: Value POSIXct: Start.Time
vitals	data frame: provides vitals events chr: patient_id_encounter chr: Variable.Name num: Value POSIXct: End.Time

Details

As per Nelson Sanchez-Pinto, OSI = 100 * Mean Airway Pressure * FiO2 / Pulse Oximetry, where Meand Ariway Pressure and FiO2 are taken to be the most recent within the last hour preceding Pulse Oximetry. Therefore, each returned OSI will have the time correpsonding to the Pulse Oximetry measurement.

Value

data_frame:

• chr: patient_id_encounter

• num: oxygen_saturation_index

• POSIXct: time

jcasse/icueval documentation built on May 18, 2019, 9:20 p.m.