Biomaterial Database

Changes in respiratory pattern resulting from the use of a facemask to record respiration in newborn infants. 1982

P J Fleming, and M R Levine, and A Goncalves

Investigation of respiratory control requires an accurate measuring system which does not itself alter the pattern of respiration. We have used a transthoracic impedance pneumograph to investigate the effects of application of a face mask plus pneumotachograph or the face mask rim alone on tidal volume and respiratory frequency in 10 sleeping term infants aged 1-4 days. Application of the face mask rim led to a small but significant fall in respiratory frequency, 12% in quiet sleep (QS) and 17% in rapid eye movement (REM); with the application of the complete face mask plus pneumotachograph, changes were 10% and 14% in QS and REM, respectively. These changes were accompanied by rises in tidal volume of similar magnitude (15%, 11% in QS and 21%, 17% in REM, respectively). These results suggest that the change in respiratory pattern is due mainly to trigeminal stimulation rather than respiratory loading; thus, recordings obtained by methods utilising face masks cannot be considered to represent undisturbed respiration, for at least the first 15 min of recording.

UI	MeSH Term	Description	Entries
D007231	Infant, Newborn	An infant during the first 28 days after birth.	Neonate,Newborns,Infants, Newborn,Neonates,Newborn,Newborn Infant,Newborn Infants
D008397	Masks	Devices that cover the nose and mouth to maintain aseptic conditions often for the prevention of the spread of infections (e.g. COVID19) or to administer inhaled anesthetics or other gases.	Mask
D010992	Plethysmography, Impedance	Recording changes in electrical impedance between electrodes placed on opposite sides of a part of the body, as a measure of volume changes in the path of the current. (Stedman, 25th ed)	Rheography,Impedance Plethysmography,Impedance Plethysmographies,Plethysmographies, Impedance,Rheographies
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D012894	Sleep Stages	Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; they formerly included Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep. In 2007, sleep stages were redefined by The American Academy of Sleep Medicine (AASM) as: N1-N2 (sleep onset - light sleep), N3 (SLOW-WAVE SLEEP), and REM SLEEP.	N1-Sleep,N2-Sleep,NREM Stage 1,NREM Stage 2,N1 Sleep,N2 Sleep,Sleep Stage,Stage, Sleep,Stages, Sleep
D013990	Tidal Volume	The volume of air inspired or expired during each normal, quiet respiratory cycle. Common abbreviations are TV or V with subscript T.	Tidal Volumes,Volume, Tidal,Volumes, Tidal