Functional residual capacity and oxygen tension in apnea of prematurity

Marshall, Terry A.; Kattwinkel, John

doi:10.1016/s0022-3476(81)80729-9

Cited by 7 publications

(3 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tilting has been shown to decrease arterial carbon dioxide and to increase functional residual capacity by lower intraabdominal pressure and better diaphragm activity. 7 However, this mechanism remains hypothetic, because Thoresen et al 8 found no difference in transcutaneous Pco 2 during body tilting, and Marshall et al 15 could not demonstrate a relationship between functional residual capacity and the incidence of apnea.…”

Section: Discussionmentioning

confidence: 98%

Effect of Nursing in the Head Elevated Tilt Position (15°) on the Incidence of Bradycardic and Hypoxemic Episodes in Preterm Infants

et al. 1997

View full text Add to dashboard Cite

show abstract

Section: Discussionmentioning

confidence: 98%

Effect of Nursing in the Head Elevated Tilt Position (15°) on the Incidence of Bradycardic and Hypoxemic Episodes in Preterm Infants

et al. 1997

View full text Add to dashboard Cite

show abstract

“…Similarly, a lower FRC is observed if measured within 2 min of an apneic pause (3). However, the link between apneic events with hypoxemia and FRC remains subject to debate, since Marshall and Kattwinkel (9) did not find any relationship between the incidence of idiopathic apneic events and FRC.…”

mentioning

confidence: 98%

Relationship Between Functional Residual Capacity and Oxygen Desaturation During Short Central Apneic Events During Sleep in “Late Preterm” Infants

et al. 2008

View full text Add to dashboard Cite

Apneic episodes are frequent in the preterm neonate and particularly in active sleep (AS), when functional residual capacity (FRC) can be decreased. Furthermore, FRC may be inversely correlated with the speed of blood-O 2 -desaturation. We evaluated the potential involvement of FRC in the mechanisms responsible for blood-O 2 -desaturation during short central apneic events (Ͼ3 s) in "late-preterm" infants and analyzed the specific influence of sleep state. Apneic events were scored in 29 neonates (postmenstrual age: 36.1 Ϯ 1.2 wk) during AS and quiet sleep (QS). FRC was measured during well-established periods of regular breathing. Apneas with blood-O 2 -desaturation (drop in SpO 2 Ͼ5% from the baseline, lowest SpO 2 during apnea: 91.4 Ϯ 1.8%) were more frequent in AS than in QS, whereas no difference was seen for apneas without desaturation. The magnitude of the FRC did not depend on the sleep state. In AS only, there was a negative relationship between FRC and the proportion of apneas with desaturation. Even in late preterm infants who do not experience long-lasting apnea, blood-O 2 -desaturation during short apneic events is related (in AS but not QS) to a low baseline FRC. Sleep stage differences argue for a major role of AS-related mechanisms in the occurrence of these apneas.

show abstract

“…Previous studies have used transcutaneous oxygen monitors to measure these effects, but they have slow response times in comparison with the average duration of an apnoeic episode. 5 Pulse oximetry has been shown to be extremely accurate in a neonatal population and overcomes the problem of slow response. 6 This study was therefore designed to examie the effects of apnoeic attacks on the oxygen saturation (SaO2) of preterm infants, as measured by pulse oximetry, and see how this relationship is affected by the presence of bradycardia and treatment with methylxanthines.…”

mentioning

confidence: 99%

Apnoea, bradycardia, and oxygen saturation in preterm infants.

Upton

Milner

Stokes

1991

Archives of Disease in Childhood

View full text Add to dashboard Cite

To analyse the effects of apnoea and bradycardia on the oxygen saturation (SaO2) of preterm infants and to make recommendations for apnoea alarm limits, polygraphic recordings were made on 89 occasions of 27 preterm infants; 1029 apnoeic episodes were analysed.Reduction in SaO2 was positively correlated with duration of apnoea, but the scatter of results was such that reductions in SaO2 of up to 40% occurred with apnoeas of less than 10 seconds duration. The median initial SaO2 was significantly lower in those episodes that resulted in bradycardia (92% compared with 95%), and there was also a significantly greater reduction in median SaO2 (9%9 compared with 5%).This study illustrates the difficulty of setting alarm limits for the detection of apnoea. We suggest that rather than simply detecting apnoea it is more appropriate to monitor heart rate and SaO2 in infants with recurrent apnoea.

show abstract

Functional residual capacity and oxygen tension in apnea of prematurity

Cited by 7 publications

References 10 publications

Effect of Nursing in the Head Elevated Tilt Position (15°) on the Incidence of Bradycardic and Hypoxemic Episodes in Preterm Infants

Effect of Nursing in the Head Elevated Tilt Position (15°) on the Incidence of Bradycardic and Hypoxemic Episodes in Preterm Infants

Relationship Between Functional Residual Capacity and Oxygen Desaturation During Short Central Apneic Events During Sleep in “Late Preterm” Infants

Apnoea, bradycardia, and oxygen saturation in preterm infants.

Contact Info

Product

Resources

About