Correctly selecting a liquid-filled nasogastric infant feeding catheter to measure intraesophageal pressure

Pediatric Pulmonology
C G HartfordM J Turner

Abstract

Polyvinyl chloride (PVC) nasogastric feeding catheters are used clinically to measure intraesophageal pressure as an estimate of pleural pressure for calculating lung compliance in infants. The accuracy of pressure measurement of 4 French gauge (FG) catheter sizes and three brands of liquid-filled catheter manometer systems (CMS) was evaluated by determining their resonance-frequency amplitude and phase properties. All CMS were underdamped and resonated. No CMS exhibited a uniform mean frequency response above 11 Hz. The maximum respiratory rate (Frr) within which CMS could potentially measure dynamic intraesophageal pressure within a 5% error limit was determined (Frr): the highest mean Frr recorded reliably in large-diameter catheters was 82 breaths/min. Significant CMS differences in accuracy existed between catheter FG sizes and between catheters of similar diameters but differing brands. Correlation (r2) between catheter inner diameter and CMS Frr was 0.66 across brands. In conclusion, intraesophageal PVC liquid-filled feeding catheters are suitable for estimating pleural pressures in subjects mechanically ventilated without sharp inspiratory waveforms or high respiratory rates. Quantitative frequency response characteriza...Continue Reading

References

Jul 1, 1977·Medical & Biological Engineering & Computing·K J MaxtedT H Macdonald
Jan 1, 1991·Pediatric Pulmonology·A L Coates, J Stocks
Dec 1, 1990·Journal of Cardiothoracic Anesthesia·D J Doyle
Dec 1, 1989·Anesthesiology·S F HipkinsW B Runciman
Aug 1, 1989·Journal of Applied Physiology·A L CoatesE W Outerbridge
Sep 1, 1987·Journal of Applied Physiology·D A ChartrandH K Chang
Mar 1, 1987·Critical Care Medicine·A J RuttenW B Runciman
Aug 1, 1970·American Heart Journal·G G Shapiro, L J Krovetz
Aug 1, 1983·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·P N LeSouëfA C Bryan
Nov 1, 1983·Clinical Physics and Physiological Measurement : an Official Journal of the Hospital Physicists' Association, Deutsche Gesellschaft Für Medizinische Physik and the European Federation of Organisations for Medical Physics·C W Yeomanson, D H Evans
Feb 1, 1982·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·M I AsherJ Milic-Emili
Oct 1, 1980·Journal of Applied Physiology: Respiratory, Environmental and Exercise Physiology·C S BeardsmoreM Silverman
Mar 1, 1964·Journal of Applied Physiology·J MILIC-EMILIE M GLAUSER

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