Transcutaneous Blood Gases and Sleep Apnea Profile in Healthy Preterm Infants During Early Infancy

Bentele, K. H. P.; Ancker, Ulrike; Albani, M.

doi:10.1007/978-1-4613-1927-6_16

Cited by 2 publications

(2 citation statements)

References 3 publications

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“…The values for the levels of Ptco2 are quite comparable to those obtained by others (6,(10)(11)(12)(13)16) During sleep, decreases in Rco2 in excess of 2.0 kPa (1 5 mm Hg) declined with age. They were observed in about one third of the youngest control infants and in less than 10% of the 3-moold infants and were absent at 6 mo.…”

Section: Discussionsupporting

confidence: 88%

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Transcutaneous Oxygen and Carbon Dioxide during the First Half Year of Life in Premature and Normal Term Infants

et al. 1992

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ABSTRACT. Repetitive polysomnograms were recorded from a total of 33 infants, 19 healthy preterm infants, and 14 term controls between 40 wk postconceptional age and 6 mo of age. These nighttime recordings lasted 2-4 h, except at 52 wk in preterm infants and at 3 mo of age in term infants when an overnight 12-h recording was per With the onset of pulmonary ventilation after birth, arterial Po, levels rapidly rise from the 2.7-4.1 kPa (20-30 torr) characteristic of the fetus to approximately 8.1-9.5 kPa (60-70 torr), but Pco, levels do not change dramatically (1). During the first weeks of life, PCO, sensitivity increases slowly and P C O~ threshold decreases with age as evidenced by a displacement of the PCO,

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Section: Discussionsupporting

confidence: 88%

“…This technique has been successfully used to measure Po2 in the fetus and newborn (6)(7)(8)(9) and in older infants (10)(11)(12)(13)(14)(15)(16)(17). Fewer studies have thus far dealt with Ptcco2 in term and preterm infants (1 0, 1 1, 18).…”

mentioning

confidence: 99%

Transcutaneous Oxygen and Carbon Dioxide during the First Half Year of Life in Premature and Normal Term Infants

et al. 1992

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Obstructive apnea, associated patterns of movement, heart rate, and oxygenation in infants at low and increased risk for SIDS

Hoppenbrouwers

Hodgman

Cabal

1993

Pediatric Pulmonology

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Repetitive polysomnograms were recorded between 40 weeks post-conceptional age and 6 months in a total of 49 infants, 19 healthy preterm infants, 14 normal term infants, and 16 subsequent siblings of infants who died of sudden infant death syndrome (SIDS). These nighttime recordings lasted 2-4 hours, except at 3 months when an overnight 12-hour recording was performed. Obstructive apneas (OA) > 3 seconds were divided into 3 categories: 1) clear obstructive, 2) mixed and 3) unclear because of movement artifacts. More than half belonged in category 3 and were excluded from further analysis unless accompanied by a transient episode of bradycardia (TEB), defined as heart rate < or = 100 beats per minute. Each OA with TEB was also examined for changes in transcutaneous oxygen tension (PtcO2). Most pauses were brief (median, 4 seconds), the longest (27 seconds) seen only once in the youngest premature infant. The majority of OA were accompanied by heart rate accelerations. The number of clear obstructive and mixed apneas was similar. The scores were combined to calculate a density (number per 100 minutes of recording). OA were not common: Their density decreased from 2 in 100 minutes at 40 weeks in the preterm to once every 300 minutes (5 hours) in the 6-month-old term infant. Ten percent of the OA were accompanied by TEB. Of these, 10% were accompanied by a PtcO2 decrease of > 10 mm Hg. OA with TEB followed a nonmonotonic curve, the highest percentage of infants showing this pattern at the age of highest risk for SIDS. Minor differences among study groups were confined to less movements with OA in subsequent siblings and an earlier peak incidence of OA with TEB in prematures, compared to normal term infants. OA were seen in all study groups, were self-limited, and apparently were devoid of pathological consequences.

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Transcutaneous Blood Gases and Sleep Apnea Profile in Healthy Preterm Infants During Early Infancy

Cited by 2 publications

References 3 publications

Transcutaneous Oxygen and Carbon Dioxide during the First Half Year of Life in Premature and Normal Term Infants

Transcutaneous Oxygen and Carbon Dioxide during the First Half Year of Life in Premature and Normal Term Infants

Obstructive apnea, associated patterns of movement, heart rate, and oxygenation in infants at low and increased risk for SIDS

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