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Abstract
The pulmonary function test (PFT) induction jacket was invented to make the process of performing the forced vital capacity (FVC) manoeuvre with a computerized spirometer effortless and productive for both the patient and the medical practitioner. The jacket is composed of three layers of PVC material sealed together to form a single jacket with two chambers. The inner chamber is formed between the inner layer and the middle layer, in which cold water at a temperature of 10 °C is circulated using a connected water unit when triggered. Similarly, the outer chamber is formed between the middle layer and the outer layer, in which air is pressurized using a connected air unit. Thirty volunteers performed the FVC manoeuvre with and without wearing the jacket. There was no difference between the results in spirometry parameters in the participants without a jacket and those with a jacket. However, use of the jacket significantly reduced the number of trials the participants had to undergo to perform spirometry. The jacket automated the FVC manoeuvre by triggering a physiological inspiratory gasp using cold water and circumscribing pressurized air for expiration. Additionally, subsequent advancements in the jacket have been suggested.
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Details
1 Medical College Baroda, The Maharaja Sayajirao University of Baroda, Department of Physiology, Vadodara, India (GRID:grid.411494.d) (ISNI:0000 0001 2154 7601)
2 National Institute of Medical Sciences and Research, NIMS University, Department of Physiology, Jaipur, India (GRID:grid.464642.6) (ISNI:0000 0004 0385 5186)
3 Medical College Baroda, The Maharaja Sayajirao University of Baroda, Department of Physiology, Vadodara, India (GRID:grid.411494.d) (ISNI:0000 0001 2154 7601); Parul Institute of Medical Sciences & Research Parul Sevashram Hospital, Parul University, Department of Physiology, Vadodara, India (GRID:grid.510466.0) (ISNI:0000 0004 5998 4868)