Abstract
Home sleep studies are potentially a cost-effective way of diagnosing paediatric sleep disordered breathing (SDB). The majority however, do not include CO2 measurement.
We hypothesized that CO2 data does not change management in healthy children with SDB, unlike in those with comorbid conditions, when added to cardio-respiratory polygraphy.
Retrospective analysis of two years data on children who underwent a first CRPoly and transcutaneous CO2 study. Age, gender, underlying disease and SDB symptoms were recorded. Management recommendations were first made blinded to CO2 data, then after considering transcutaneous CO2. Mean CO2 was abnormal if>6.5kPa.
There were 513 patients, 311 (61%) male, median age 4.5 years (IQR 2.3-7.9). 13/513 were on overnight oxygen (O2), 1/513 on Continuous Positive Pressure (CPAP) and O2, 1/513 on non-invasive ventilation (NIV). 130/513 were healthy with obstructive sleep apnoea (OSA) symptoms. 383/513 had co-morbidities (138 upper-airway, 79 lower-airway, 48 heart disease, 112 neurological syndromes, 6 obesity), 189/383 had OSA symptoms.
107/130 otherwise healthy patients had SDB; CO2 data did not change management. Conversely, either high mean levels (17/20) or raised CO2 in REM sleep (3/20), changed management in 20/383 (5%) patients with co-morbidities; in 16/20, CPAP or NIV was started.
Overnight CO2 monitoring is not necessary for the diagnosis of SDB in healthy children, but is crucial in those with co-morbidities.
Footnotes
Cite this article as: European Respiratory Journal 2018 52: Suppl. 62, OA3592.
This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only).
- Copyright ©the authors 2018