Pressure sensor plethysmography: a method for assessment of respiratory motion in children

Abstract

P Pr re es ss su ur re e s se en ns so or r p pl le et th hy ys sm mo og gr ra ap ph hy y: : a a m me et th ho od d f fo or r a as ss se es ss sm me en nt t o of f r re es sp pi ir ra at to or ry y m mo ot ti io on n i in n c ch hi il ld dr re en n P. Banovcin*, J. Seidenberg**, H. von der Hardt** For this purpose, we used two pressure sensors attached to the skin above the umbilicus and in the right medioclavicular line at the fourth intercostal space: "pressure sensor plethysmography". We tested the ability of this method to assess thoracoabdominal asynchrony and TPEF/TE by comparison with respiratory inductance plethysmographic and pneumotachographic measurements in 30 children, aged 1-12 yrs, with airway obstruction.The mean difference (95% confidence interval (95% CI)) between phase angles obtained by respiratory inductance plethysmography and pressure sensor plethysmography was only -5.8°(range -18.0 to +6.4°). Similarly, all methods used to measure TPEF/TE agreed well: mean differences (95% CI) between pneumotachographic and respiratory inductance plethysmographic, pneumotachographic and pressure sensor plethysmographic, and respiratory inductance plethysmographic and pressure sensor plethysmographic measurements of TPEF/TE were +0.01 (range -0.05 to +0.06), -0.03 (-0.09 to +0.03) and -0.03 (-0.10 to +0.04), respectively.We conclude that pressure sensor plethysmography is a simple and noninvasive method, and suitable to measure thoracoabdominal asynchrony and TPEF/ TE ratios as well as respiratory inductance plethysmography and pneumotachography.

Early experience with remote pressure sensor respiratory plethysmography monitoring sedation in the MR scanner

“…We refer to this technique as remote pressure sensor respiratory plethysmography (RPSRP). A similar technique has recently been shown by Banovcin and colleagues [9] to deliver results in agreement with the well-established respiratory impedance plethysmography (RIP).…”

Oxidative Stress and Bronchial Asthma in Children—Causes or Consequences?

“…The interplay between immune and non-immune cells leads to inflammation, which is characterized by various levels of clinical expression and symptoms. During the pre-exacerbation, the acceleration of the inflammatory cascades results in the asthma exacerbation of different severities (7). The persistent and intermittently exacerbated inflammation is accompanied by overproduction of reactive oxygen species (ROS) and reactive nitrogen species (RNS), which can also contribute to the promotion and persistence of the airway inflammation (8).…”

Nasal airflow and thoracoabdominal motion in children using infrared thermographic video processing

“…In two children who rejected the nasal catheter, a pressure sensor plethysmograph was instead set around the periumbilical region. This system is known to determine thoracoabdominal asynchrony as well as inductance plethysmography 23…”

“…This system is known to determine thoracoabdominal asynchrony as well as inductance plethysmography. 23 The thermographic video and the CO were simultaneously recorded on the same computer for time synchronization. Simultaneous video and CO arbitrary epochs that were free from gross body motion artifacts were used for off-line processing.…”