Little Effect of Gestation at 3,100 m on Fetal Fat Accretion or the Fetal Circulation

Schwartz, Joel; Cioffi-Ragan, Darleen; Wilson, Megan J.; Julian, Colleen G.; Beatty, Brenda Ruth; Moore, Lorna G.; Galan, Henry L.

doi:10.1002/ajhb.22407

Cited by 6 publications

(6 citation statements)

References 36 publications

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“…However, it is consistent with previous reports from other parts of the world (Ballew & Haas 1986), but inconsistent with other investigators who reported either reduced fatness at high altitude (Galan et al, 2001) or no significant difference (Schwartz et al, 2013). The discrepancies may be the result of variation in altitudinal levels and ethnicity of the mother as well as technical problems associated with indirect methods that have been used to evaluate body fat in newborns.…”

Section: Discussionsupporting

confidence: 64%

The Relationship of Birth Weight, Body Shape and Body Composition at Birth to Altitude in Saudi Arabia

et al. 2016

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SUMMARY:The objective of this work was to study the effect of high altitude on full term birth weight, body shape and body composition of newborn infants. Twenty five healthy pregnant Saudi women and their healthy newborns from high altitude (2850-3150 m) and equal numbers from low altitude (500 m). For each pregnant woman haemoglobin concentration, haematocrit value and blood pressures were measured and recorded immediately after admission to hospital for delivery. Fetal haemoglobin concentration and haematocrit value were determined immediately after delivery. Determination of the newborn's body shape and composition were made from anthropometric measurements which were performed two hours after delivery. Placental weight was determined immediately after its delivery. Placentae were then examined histologically. Compared with their respectives from lowland, the pregnant women from high altitude and their placentae showed haemotogical and histological changes suggestive of maternal and placental hypoxia respectively. There was no haematological evidence suggesting that the high altitude fetuses experienced a greater degree of hypoxia in utero than did the low altitude fetuses. Compared with lowland newborns highland newborns were significantly lighter but fatter and have significantly greater head circumference: birth weight ratios and abdominal circumferences. These differences in body physique between high and lowland neoborns appeared to be mainly secondary to placental hypoxia resulting from maternal hypoxia which in turn was caused by high altitude hypoxia. The altered body physique at birth due to high altitude hypoxia appeared to be not mediated by fetal hypoxia, but possibly by other mechanisms induced by placental hypoxia.

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Section: Discussionsupporting

confidence: 64%

The Relationship of Birth Weight, Body Shape and Body Composition at Birth to Altitude in Saudi Arabia

et al. 2016

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“…Doppler waveform analysis measured indices of vascular function in the fetal umbilical arteries, umbilical vein, middle cerebral artery, and ductus venosus. No significant differences between altitudes were found (except lower weight) (Schwartz et al, 2013).…”

Section: Sightingsmentioning

confidence: 82%

Sightingsedited by John W. Severinghaus

2013

High Altitude Medicine & Biology

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“…The literature shows a total of 70 studies 2 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 , …”

Section: Resultsunclassified

Cause of fetal growth restriction during high-altitude pregnancy

Brown,

Giussani

2024

iScience

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Little Effect of Gestation at 3,100 m on Fetal Fat Accretion or the Fetal Circulation

Abstract: The hypoxia of residence at high compared to moderate altitude lowered birth weight but did not significantly alter MUA or mid-thigh fetal subcutaneous tissue mass or Doppler indices of vascular function.

Cited by 6 publications

References 36 publications

The Relationship of Birth Weight, Body Shape and Body Composition at Birth to Altitude in Saudi Arabia

The Relationship of Birth Weight, Body Shape and Body Composition at Birth to Altitude in Saudi Arabia

Sightingsedited by John W. Severinghaus

Cause of fetal growth restriction during high-altitude pregnancy

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