None directly, although a study currently being undertaken by the South Tees Hospitals NHS Trust refers to the ResQPOD device1. Details can be found on the National Research Register at:
A report published in 2005 of a study by Staffordshire Ambulance Trust on the use of an impedance threshold device2 can be found on PubMed at:
1 Outcome from out-of-hospital cardiac arrest: a pilot randomised controlled trial comparing survival after standard or inspiratory impedance threshold values augmented cardiopulmonary resuscitation.
2 Use of an impedance threshold device improves short-term outcomes following out-of-hospital cardiac arrest.