Vmax Logic Tree

Logic Tree software enables clients using Vmax software (which is what we use in our Lab) to custom design interpretation modules to run for each patient at the completion of their lung function test. It is comprised of two components; a software platform, and a development tool to design and edit modules.

Having participated in the ‘Inter-rater reliability in the interpretation of lung function tests’ study conducted by The Institute for Breathing and Sleep, Austin Health, Melbourne last year which was presented as a poster at the recent ANZSRS meeting in Brisbane it is clearly evident there is significant variation in interpretation of lung function tests across different labs.

In an effort to ensure our Lab is interpreting data according to ATS guidelines we have recently installed the Logic Tree module. We have now incorporated this quick and easy step into our post lung function test routine for each patient.
The flow chart attached gives an example of how the logic is used to report spirometry.

Not only has it been educational for me to be involved in the installation but now having had the time to look at the module in detail I can appreciate how it will be easy to custom design the interpretation if required.

This tool assists our physicians in reporting their patient’s pulmonary function tests which is not only useful from a resources point of view but also from a consistency perspective. Thus it standardises interpretative protocols and reporting phrases which leads to consistency in reporting especially helpful for referring doctors.

The Logic Tree ensures our Lab is interpreting data according to ATS guidelines and the Logic Tree will be an important aid in preparing our Lab for accreditation in the future.

Vanessa