Description and Validation of a Novel Method of Measuring Pharyngeal Pressure in New-born.
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Date
2016-04
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Abstract
Study background: Measurement of delivered pharyngeal pressure during continuous positive airway pressure
(CPAP) therapy is not in routine practice due to lack of a simple and affordable technique of intrapharyngeal
pressure measurement. To overcome the lack of the gold standard solid-state catheter-tip pressure
measurement technology in our set up, we improvised a novel method of pressure measurement and tested
its validity in a simulated pharynx.
Methods: A low-cost pressure transducer was improvised by attaching an orogastric tube to its one end.
The other end of the orogastric tube was sealed into an artificial pharynx - a 20 ml syringe. The pressure
transducer readings were compared with that obtained by a digital manometer attached to the tip of the
syringe. Bland-Altman statistic was used to quantify the measurement reliability of the novel method against
the digital manometer. Effect of tube length on the measurement agreement was also studied. The developed
technique was applied in new-borns.
Results & conclusion: Pressures measured by this technique were in good agreement with that obtained
using a digital manometer. This technique has the potential to be used as an alternative to catheter-tip
pressure transducers for bedside pharyngeal pressure measurement in new-born babies, especially in underresourced
setups.
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Nishanth Sampath1, Akanksha Singh1, Shridhar Gopalakrishnan2, Anu Thukral2, M. Jeeva Sankar2, Ramesh Agarwal2, Ashok Kumar Jaryal1, Ashok Deorari2 and Vinod K. Paul2. Description and Validation of a Novel Method of Measuring Pharyngeal Pressure in New-born.Indian Journal of Physiology and Pharmacology. 2016 Apr-Jun; 60(2): 200-204.