Duration of Mechanical Ventilation

Duration of Mechanical Ventilation is the average number of days being spent by ICU patients on mechanical ventilation.

Indicators
Indicator:	Duration of Mechanical Ventilation
Created/Raw:	Created
Program:	Critical Care
Start Date:	Jan 1 2013
End Date:
Reports:	Critical Care Program Quality Indicator Report

• Cargo

• SMW:

• Categories

• Default form:

This concept seems to be a base unit used by other indicators such as Ventilated patient flow ,Critical Care Ventilator Associated Pneumonia Rate, Critical Care Ventilator Utilization Ratio. If the definition used by all of those is the same then maybe we should only define it once and then link to it. The same would be true for actually calculating it. Ttenbergen 10:47, 2022 January 11 (CST) Mechanical ventilation has different concept with Ventilated patient flow ,Critical Care Ventilator Associated Pneumonia Rate, Critical Care Ventilator Utilization Ratio. Mechanical vent includes both invasive and noninvasive vent while the last three only involve invasive vent. --JMojica 13:09, 2022 January 11 (CST)

• SMW

• Cargo

• Categories

QI domain

• Effective
• Efficient

Reported as

Days (mean)

Significance

Ventilation duration can be considered a surrogate marker of interrelated factors such as : ICU patients characteristics (acuity, comorbidity, premorbid functional status), structural and process-related aspects of ICU care (staffing ratios, staff expertise, processes for effective ventilator).

Sampling Plan / Procedure

Inclusion Criteria

100% sampling for all patients on mechanical ventilation. Mechanical ventilation includes:

• Invasive Mechanical Ventilation via ET Tube or tracheostomy
• Non-invasive CPAP or BIPAP

Exclusion Criteria

Patients who are not on mechanical ventilation

Frequency

• Daily recording of dates a patient being on mechanical ventilation
• Total number of ICU patients and ICU days being on mechanical ventilation are calculated and reported on a monthly, quarterly or yearly basis based on the daily data.
• Time Reference for month, quarter or year can be based on ICU admission dates or ICU discharge dates. For the Director reports, the discharge dates are used as the time of reference.

Definition and Derivation

Numerator

Num = Total Mechanical Vent Days in a given period

Denominator

Denom =Number of ventilated patients on the same period as the numerator

Formula

Duration of Mechanical Ventilation in days = Num / Denom

Example

• Time Reference: Discharge Dates from Jan 1, 2017 to March 31, 2017
• Number of patients who have discharge dates from Jan 1, 2017 to March 31, 2017 and who were on mechanical ventilation at HSC MICU = 158
• Total Days these patients are on mechanical ventilation (invasive and/or non-invasive) = 981
  • (if a patient had both Invasive and non-invasive Mechanical ventilation in a day, this is counted as one day only.)
• Duration of Mechanical Ventilation in days = 981 / 158 = 6.2 days

Data Sources

Daily data for Invasive and non invasive mechanical ventilation are taken from the following TISS28 elements

• T18 - Invasive Mechanical Ventilation (TISS Item)
• T21 - Non-invasive CPAP or BIPAP (TISS Item)

The TISS form is being marked daily by ICU bed side nurses and quality checked by the Database Data Collectors.

Starting Oct 1, 2020, the above TISS28 elements are collected as part of the CCI Collection, before this they were part of TISS28 Data.mdb.

SAS Program

Part of X:\Julie\SAS_CFE\CC_reports\ChartReport\prepCCChart.sas

Report Users

• Critical Care Directors and Site Managers
• Critical Care Quality Improvement Team (QIT)

Duration of Mechanical Ventilation

Related articles

Related articles:

Ventilated patient flow (← links) Acuity (← links) User:JMojica (← links)