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Data Element Detail

Episode of admitted patient care-duration of continuous ventilatory support, total hours
Identifying and Definitional Attributes
QH 041654 v1
Data Element
Derived Data Element
Draft
23-Apr-2013		Current
09-Jul-2013		Superseded
29-Jan-2018
Standard
01-Jul-2013
30-Jun-2017
The total number of hours an admitted patient has spent on continuous ventilatory support.
Duration of continuous ventilatory support, total hours
Duration of mechanical ventilation
Representational Attributes
Numeric Character
Time
hhhh
4
4
Permissible Values

Permissible_values

Total hours expressed as 0000, 0001, 0425 etc.
Supplementary Values

Supplemenary_values

-
Collection and Usage Attributes
Continuous ventilatory support or invasive ventilation refers to the application of ventilation via an invasive artificial airway. For the purposes of this data element, invasive artificial airway is that provided via an endotracheal tube or a tracheostomy tube.

An endotracheal tube can be placed orally or nasally. It is usually employed prior to a surgically placed tracheostomy tube.

With prolonged ventilation, or when prolonged ventilation is expected, a tracheostomy tube is placed surgically.
For the purposes of calculating the duration of continuous ventilatory support, begin calculation with one of the following:
- Initiation of continuous ventilatory support. For example, for patients with endotracheal intubation and subsequent initiation of continuous ventilatory support, begin counting at the time of intubation. Patients with a tracheostomy, begin counting at the point when continuous ventilatory support is begun; or
- Admission of a ventilated patient. For those patients admitted with continuous ventilatory support, begin counting the duration at the time of the admission.

End the calculation with one of the following:
- Extubation (e.g. removal of endotracheal tube);
- Cessation of continuous ventilatory support after any period of weaning. For tracheostomy patients, the tracheal tube may not be withdrawn for days after discontinuation of continuous ventilatory support. Therefore, the duration would end with the cessation of continuous ventilatory support;
- Discharge, death of transfer of a patient on continuous ventilatory support; or
- Change of episode type.

Subsequent periods of continuous ventilatory support should be added together. For example, if a patient is on continuous ventilatory support on the first day of their admission, then again on the fourth day of their admission, the hours should be added together.

If there is a period of less than 1 hour between cessation and then restarting of ventilatory support, continue counting the duration. If there is removal and immediate replacement of airway devices, continue counting the duration.

Ventilatory support which is provided to a patient during surgery is associated with anaesthesia and is considered an integral part of the surgical procedure. Duration of continuous ventilatory support should not be counted if it is part of a surgical procedure, except in the following circumstances:
- Ventilatory support was performed for respiratory support prior to surgery and then continued during surgery and post surgery; or
- Ventilatory support was initiated during surgery, continues after surgery and for more than 24 hours post surgery.

Hours of ventilatory support should be reported as completed cumulative hours. For example, if the total duration of ventilatory support was 98 hours 45 minutes, report 98 hours.
Relational Attributes
Related Metadata References

Related Metadata References_IR

  • 1 - 3
ViewRelationshipMetadata Item TypeMetadata Item SubtypeNameIdentifier & VersionApproval Status
Has been superseded byData ElementDerived Data ElementEpisode of admitted patient care-duration of continuous ventilatory support, total hoursQH 041654 Version 2Current
Is derived fromData ElementData ElementEpisode of admitted patient care-duration of continuous ventilatory support, total hours and minutesQH 041655 Version 1Superseded
Relates toData ElementData Element ConceptEpisode of admitted patient careQH 041604 Version 1Current
Implementation in Metadata Sets

Implemented

No Metadata Items
Source and Reference Attributes
Australian Institute of Health and Welfare
METeOR data element: Episode of admitted patient care-duration of continuous ventilatory support, total hours NNNN, Identifier 479010, Health standard 07/02/2013 https://meteor.aihw.gov.au/content/index.phtml/itemId/479010/meteorItemView/long
CVS; Mechanical ventilation;