2006
DOI: 10.1177/104063870601800621
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Morphological Changes in the Lungs of Meconium-Stained Piglets

Abstract: Abstract. Meconium staining of the skin is a common event associated with fetal hypoxia, stillbirths, weak-born piglets, and neonatal mortality. Aspiration of meconium leads to meconium aspiration syndrome (MAS). This study was undertaken to assess the relationship between the degree of meconium staining of the skin at birth, meconium aspiration, and pulmonary changes in porcine neonates. A total of 353 farrowing sows and 3,693 born piglets were monitored during parturition and for 15 days after delivery. Umbi… Show more

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Cited by 15 publications
(22 citation statements)
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“…One of the interesting findings in our study was that of all the biochemical assessments, only pCO2 was clearly elevated and pO2 was substantially decreased in piglets with high birth weight. These differences had already been observed in a study comparing piglets born without asphyxia to animals surviving intra partum asphyxia (Castro-Najera et al, 2006;Orozco-Gregorio et al, 2008;Mota-Rojas et al, 2011). However, in that study we found no significant differences in pO2 and pCO2 between control and asphyxiated piglets probably because of the small sample size (n=10 piglets in each group) and large variability of these parameters.…”
Section: Resultssupporting
confidence: 40%
“…One of the interesting findings in our study was that of all the biochemical assessments, only pCO2 was clearly elevated and pO2 was substantially decreased in piglets with high birth weight. These differences had already been observed in a study comparing piglets born without asphyxia to animals surviving intra partum asphyxia (Castro-Najera et al, 2006;Orozco-Gregorio et al, 2008;Mota-Rojas et al, 2011). However, in that study we found no significant differences in pO2 and pCO2 between control and asphyxiated piglets probably because of the small sample size (n=10 piglets in each group) and large variability of these parameters.…”
Section: Resultssupporting
confidence: 40%
“…During foetal asphyxia, the redistribution of blood from the intestine into the vital organs such as heart and brain causes an increase in intestinal peristalsis and relaxation of the anal sphincter, and together these two hypoxiainduced responses ultimately lead to the release of meconium into the amniotic fluid. If foetal anoxia persists, increased respiratory movements with an opened glottis result in the aspiration of amniotic fluid contaminated with meconium into the lungs Castro-Najera et al 2006;Mota-Rojas et al 2006). For these reasons, the passage of meconium into the amniotic fluid is generally regarded as a good indicator of foetal distress.…”
Section: How Do We Evaluate Umbilical Cord Morphology and Uterine Dynmentioning
confidence: 99%
“…Meconium-stained amniotic fluid is an indicator of prenatal asphyxia and postnatal viability in pigs (Castro-Najera et al 2006). Earlier reports indicate the same problem occurs in calves, lambs and foals and it is postulated that animals born with meconium-stained skin are generally weaker and more sus- ceptible to perinatal death.…”
Section: How Do We Evaluate Umbilical Cord Morphology and Uterine Dynmentioning
confidence: 99%
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“…Morphologic aspects of the UC such as adherence and rupture have usually been studied and retrospectively correlated with the perinatal outcome in piglets (Mota-Rojas et al, 2002, 2005aCastro-Nájera et al, 2006).…”
mentioning
confidence: 99%