Effect of apparatus dead space on breathing parameters in newborns: "flow-through" versus conventional techniques

Commercial devices for tidal breathing measurements in newborns allow only short-term measurements, due to the high apparatus dead space of the face mask and pneumotachometer. The flow-through technique (FTT) minimizes the dead space by a background flow, thereby allowing long-term measurements. The...

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Veröffentlicht in:	The European respiratory journal 2001-01, Vol.17 (1), p.108-114
Hauptverfasser:	Schmalisch, G, Foitzik, B, Wauer, R.R, Stocks, J
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Humans Infant Infant, Newborn - physiology Investigative techniques of respiratory function Investigative techniques, diagnostic techniques (general aspects) Medical sciences Peak Expiratory Flow Rate Pulmonary Ventilation - physiology Reference Values Respiratory Dead Space - physiology Respiratory Function Tests - instrumentation Respiratory Function Tests - methods Tidal Volume - physiology
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Zusammenfassung:	Commercial devices for tidal breathing measurements in newborns allow only short-term measurements, due to the high apparatus dead space of the face mask and pneumotachometer. The flow-through technique (FTT) minimizes the dead space by a background flow, thereby allowing long-term measurements. The aim of this study was to investigate the comparability of tidal breathing parameters using both techniques. Paired measurements of tidal breathing were performed in 86 sleeping infants (median (range) body weight 2.8 kg (1.9-5.3 kg), age 65 days (3-150 days)), using the FTT and SensorMedics 2600 (SM 2600). There was a significant bias (p
ISSN:	0903-1936 1399-3003
DOI:	10.1183/09031936.01.17101080