At-home end-tidal carbon dioxide measurement in children with invasive home mechanical ventilation
Carolyn C Foster, Soyang Kwon, Avani V Shah, Caroline A Hodgson, Lindsey P Hird-McCorry, Angela Janus, Aneta M Jedraszko, Philip Swanson, Matthew M Davis, Denise M Goodman, Theresa A Laguna, Carolyn C Foster, Soyang Kwon, Avani V Shah, Caroline A Hodgson, Lindsey P Hird-McCorry, Angela Janus, Aneta M Jedraszko, Philip Swanson, Matthew M Davis, Denise M Goodman, Theresa A Laguna
Abstract
Background: Carbon dioxide concentration trending is used in chronic management of children with invasive home mechanical ventilation (HMV) in clinical settings, but options for end-tidal carbon dioxide (EtCO2 ) monitoring at home are limited. We hypothesized that a palm-sized, portable endotracheal capnograph (PEC) that measures EtCO2 could be adapted for in-home use in children with HMV.
Methods: We evaluated the internal consistency of the PEC by calculating an intraclass correlation coefficient of three back-to-back breaths by children (0-17 years) at baseline health in the clinic. Pearson's correlation was calculated for PEC EtCO2 values with concurrent mean values of in-clinic EtCO2 and transcutaneous CO2 (TCM) capnometers. The Bland-Altman test determined their level of agreement. Qualitative interviews and surveys assessed usability and acceptability by family-caregivers at home.
Results: CO2 values were collected in awake children in varied activity levels and positions (N = 30). The intraclass correlation coefficient for the PEC was 0.95 (p < 0.05). The correlation between the PEC and in-clinic EtCO2 device was 0.85 with a mean difference of -3.8 mmHg and precision of ±1.1 mmHg. The correlation between the PEC and the clinic TCM device was 0.92 with a mean difference of 0.2 mmHg and precision of ±1.0. Family-caregivers (N = 10) trialed the PEC at home; all were able to obtain measurements at home while children were awake and sometimes asleep.
Conclusions: A portable, noninvasive device for measuring EtCO2 was feasible and acceptable, with values that trend similarly to currently in-practice, outpatient models. These devices may facilitate monitoring of EtCO2 at home in children with invasive HMV.
Keywords: carbon dioxide; children with medical complexity; home mechanical ventilation; long-term mechanical ventilation; remote patient monitoring.
Conflict of interest statement
Dr. Foster has received compensation for medical record consultation and/or expert witness testimony. The remaining authors declare no conflict of interest.
© 2022 The Authors. Pediatric Pulmonology published by Wiley Periodicals LLC.
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Source: PubMed