Oral breathing in newborn infants.
Oral breathing in newborn infants.
复制标题
新生儿用口呼吸。
DOI:
10.1016/s0022-3476(85)80535-7
复制
发表时间:
1985
期刊:
影响因子:
--
通讯作者:
Fanaroff,AA
中科院分区:
文献类型:
--
作者:
Miller,MJ;Martin,RJ;Carlo,WA;Fouke,JM;Strohl,KP;Fanaroff,AA
Newborn infants are considered obligate nasal breathers, hence dependent on a patent nasal airway for ventilation. The conditions under which oral breathing could occur and the contribution of oral ventilation to total ventilation were studied in 30 healthy term infants (aged 1 to 3 days). Nasal and oral airflow were measured using two resistance-matched pneumotachometers, and heart rate tcPo2, et CO2, and sleep state were continuously recorded. In three of 10 infants studied in undisturbed sleep, spontaneous oronasal breathing was noted during both active and quiet sleep (mean duration 19±25 minutes), the distribution of tidal volume being 70%±12% nasal and 30%±12% oral. Episodes of oronasal breathing were also observed after crying in six infants (mean duration 21±19 seconds). In an additional 20 infants, multiple 15-second end-expiratory nasal occlusions were performed; eight (40%) of these infants initiated and sustained oral breathing in response to nasal occlusion. Respiratory rate, tidal volume, heart rate, and tcPo2did not change when oral breathing occurred in response to nasal occlusion, although minute ventilation decreased from 265 to 199 ml/min/kg (P<0.05). These results demonstrate that newborn infants may use the oral airway for ventilation, both spontaneously and in response to complete nasal occlusion.
登录
查看更多内容
DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
A. H. Parmelee;E. Stern
通讯作者:
E. Stern
DOI:
10.1152/jappl.1980.48.3.500
发表时间:
1980
期刊:
Journal of applied physiology: respiratory, environmental and exercise physiology
影响因子:
--
作者:
S. Wilson;B. Thach;R. Brouillette;Y. Abu
通讯作者:
Y. Abu
影响因子:
5.2
作者:
C. Clemente;D. Purpura;F. E. Mayer
通讯作者:
F. E. Mayer
DOI:
10.1016/s0022-3476(63)80341-8
发表时间:
1963
期刊:
The Journal of Pediatrics
影响因子:
--
作者:
M. Valdeś;M. F. Eichman;L. Ziskin
通讯作者:
L. Ziskin
影响因子:
17.3
作者:
W. James;S. Hastings
通讯作者:
S. Hastings