Abstract
ABSTRACT: To determine day-to-day variability in respiratory pattern, we obtained 188 comparisons of pneumograms performed during two successive 24-h intervals. The respiratory pattern values calculated were total duration of brief apnea (apnea density), periodic breathing episodes, longest apnea, number of apneas >11 s, and number of apneas >15 s. For day 1 values for apnea density, periodic breathing, and longest apnea which were within the 90th percentile for normal infants at age 1 month, day 2 values fell outside that range in 4.3, 3.5, and 18% of comparisons, respectively. There was a systematic tendency for the day 2 values to be less than the day 1 values. For each parameter, the day 2 range was lower, the slope of the day 2 versus day 1 regression line was significantly less than 1 (p < 0.01) and the y-intercept was significantly greater than zero (p 0.01). Knowledge of day-to-day pneumogram variability should be helpful in interpreting individual pneumogram results and in assessing the clinical usefulness of pneumogram recordings.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Hunt, C., Brouillette, R., Liu, K. et al. Day-to-Day Pneumogram Variability. Pediatr Res 19, 174–177 (1985). https://doi.org/10.1203/00006450-198502000-00005
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1203/00006450-198502000-00005
This article is cited by
-
Deterministic properties of apnoeas in an abdominal breathing signal
Medical & Biological Engineering & Computing (1999)
-
The relationship of breathing pattern to central chemoreceptor activity in infantile apnea
The Indian Journal of Pediatrics (1990)
-
Does caffeine prevent hypoxaemic episodes in premature infants?
European Journal of Pediatrics (1988)