Is Protocolised Weaning that Includes Early Extubation Onto Non-Invasive Ventilation More Cost Effective Than Protocolised Weaning Without Non-Invasive Ventilation? Findings from the Breathe Study

Iftekhar Khan (), Mandy Maredza, Melina Dritsaki, Dipesh Mistry, Ranjit Lall, Sarah E. Lamb, Keith Couper, Simon Gates, Gavin D. Perkins and Stavros Petrou ()
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Iftekhar Khan: University of Warwick
Mandy Maredza: University of Warwick
Melina Dritsaki: University of Oxford
Dipesh Mistry: University of Warwick
Ranjit Lall: University of Warwick
Sarah E. Lamb: University of Warwick
Keith Couper: University of Warwick
Simon Gates: University of Warwick
Gavin D. Perkins: University of Warwick
Stavros Petrou: University of Warwick

PharmacoEconomics - Open, 2020, vol. 4, issue 4, No 15, 697-710

Abstract: Abstract Background Optimising techniques to wean patients from invasive mechanical ventilation (IMV) remains a key goal of intensive care practice. The use of non-invasive ventilation (NIV) as a weaning strategy (transitioning patients who are difficult to wean to early NIV) may reduce mortality, ventilator-associated pneumonia and intensive care unit (ICU) length of stay. Objectives Our objectives were to determine the cost effectiveness of protocolised weaning, including early extubation onto NIV, compared with weaning without NIV in a UK National Health Service setting. Methods We conducted an economic evaluation alongside a multicentre randomised controlled trial. Patients were randomised to either protocol-directed weaning from mechanical ventilation or ongoing IMV with daily spontaneous breathing trials. The primary efficacy outcome was time to liberation from ventilation. Bivariate regression of costs and quality-adjusted life-years (QALYs) provided estimates of the incremental cost per QALY and incremental net monetary benefit (INMB) overall and for subgroups [presence/absence of chronic obstructive pulmonary disease (COPD) and operative status]. Long-term cost effectiveness was determined through extrapolation of survival curves using flexible parametric modelling. Results NIV was associated with a mean INMB of £620 ($US885) (cost-effectiveness threshold of £20,000 per QALY) with a corresponding probability of 58% that NIV is cost effective. The probability that NIV is cost effective was higher for those with COPD (84%). NIV was cost effective over 5 years, with an estimated incremental cost-effectiveness ratio of £4618 ($US6594 per QALY gained). Conclusions The probability of NIV being cost effective relative to weaning without NIV ranged between 57 and 59% overall and between 82 and 87% for the COPD subgroup.

Date: 2020
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DOI: 10.1007/s41669-020-00210-1

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