Newborn
Bone Marrow Hematopoiesis in
Bone Marrow Hematopoiesis in The newborn Heights has a hemoglobin-like sea \u200b\u200blevel
Erythrocytosis physiological (normal hemoglobin increased by hypoxia) in the native high results in a higher percentage of hematocrit and hemoglobin levels increased compared to the values \u200b\u200bof sea level. And this is greater the higher the level of altitude due to hypoxia (see in this blog: FITNESS FOR HEIGHT AND HEMOGLOBIN ). Erythrocytosis physiological
This is not observed at all ages. Most studies have been done in adults.
The newborn at high altitude is a different case because it presents a similar hemoglobin and hematocrit in the newborn sea level. Rosario
Peñaloza et de La Paz in Bolivia, studied the hemoglobin of the venous blood of 300 normal pregnant women height during labor and umbilical cord venous blood of 300 newborns and showed that erythropoiesis (formation red blood cells) of newborns in height to 3.600 meters. is independent of maternal factors and hypoxic environment, probably in the protective function of the placenta.
hemoglobin levels in normal pregnant women at term, studied at 3600 m compared with similar population at sea level are statistically different, as a result of physiological adaptation to altitude.
physiological adaptation makes the baby of the height is "a newcomer to the task."
Instead hematological values newborns at high altitude compared to sea level, are statistically similar. These data suggest that fetal erythropoiesis and newborns are independent of maternal factors and hypoxic environment present at 3600 meters. This erythropoiesis independent of maternal factors and hypoxic environment could be due to the protective barrier which holds the placenta on the newborn (Gerardi, Venezuela).
Other hematologic data and the mean corpuscular volume, reticulocytes and erythroblasts were also statistically similar. Also other authors indicate that the newborns in the high offers pO 2 values \u200b\u200bsimilar to arterial sea level due to maternal and placental adaptations to make the oxygen tension and blood values \u200b\u200bof fetal tissues remain within physiological ranges (Alcazar, UPCH, Lima). However
other studies in infants height and Loret de Mola in Morococha in 1955 (4500 m) found Hb of 18.3 g / dl and Hum in 1976, Cerro de Pasco (4330m) 19.3 g / dl. Although not used the same methodology R. Peñaloza the values \u200b\u200bfound are higher than perhaps it could also be a finding in high-rise levels that need to be confirmed. Doris Maldonado
Auza Cerro de Pasco (4330 m) in 1985 found a reduction of hemoglobin of infants from the first day until the seventh day in peripheral blood as shown below.
This reduction could be due to postpartum hemoconcentration to be compensated in the first days of life to achieve normal hemoglobin level in the newborn it has not found evidence of increased bone marrow erythropoiesis in the newborn height (Reynafarge).
Erythropoiesis begins in the embryo from the third week after conception. In the first 2 months of age is established in the liver, about six months gradually migrated to the marrow spaces, and at birth the majority of blood formation occurs normally in the bone marrow with normal erythropoiesis.
The infant in height, as we have seen, has a normal erythropoiesis and can not determine when life begins it increased leading to high physiological erythrocytosis.
SUMMARY The erythropoiesis of the Newborns at high altitude is independent of the maternal factors and of the high altitude hypoxia at 3600m above sea level, probably due to the protective function of the placenta.
The hematological values of the healthy pregnant women at high altitude (3600m above sea level) compared with pregnant women who live at sea level are statistically different; however, the hematological values of newborns at high altitude compared with the values of newborns at sea level are statistically similar.
Eritropoiesis begins in the embryo three weeks after conception. In the first 2 months of life is established in the liver, near six months it gradually migrates to the marrow spaces and at birth the majority of blood formation is normally produced in the bone marrow.
The infant erithropoiesis at high altitude is normal and we CAN NOT determine at age Which Begins Physiological erithrocytosis high altitude.
Erythrocytosis physiological (normal hemoglobin increased by hypoxia) in the native high results in a higher percentage of hematocrit and hemoglobin levels increased compared to the values \u200b\u200bof sea level. And this is greater the higher the level of altitude due to hypoxia (see in this blog: FITNESS FOR HEIGHT AND HEMOGLOBIN ). Erythrocytosis physiological
This is not observed at all ages. Most studies have been done in adults.
The newborn at high altitude is a different case because it presents a similar hemoglobin and hematocrit in the newborn sea level. Rosario
Peñaloza et de La Paz in Bolivia, studied the hemoglobin of the venous blood of 300 normal pregnant women height during labor and umbilical cord venous blood of 300 newborns and showed that erythropoiesis (formation red blood cells) of newborns in height to 3.600 meters. is independent of maternal factors and hypoxic environment, probably in the protective function of the placenta.
hemoglobin levels in normal pregnant women at term, studied at 3600 m compared with similar population at sea level are statistically different, as a result of physiological adaptation to altitude.
hemoglobin in pregnant women and sea level height
physiological adaptation makes the baby of the height is "a newcomer to the task."
Instead hematological values newborns at high altitude compared to sea level, are statistically similar. These data suggest that fetal erythropoiesis and newborns are independent of maternal factors and hypoxic environment present at 3600 meters. This erythropoiesis independent of maternal factors and hypoxic environment could be due to the protective barrier which holds the placenta on the newborn (Gerardi, Venezuela).
Newborn Hemoglobin in height and Sea Level
Other hematologic data and the mean corpuscular volume, reticulocytes and erythroblasts were also statistically similar. Also other authors indicate that the newborns in the high offers pO 2 values \u200b\u200bsimilar to arterial sea level due to maternal and placental adaptations to make the oxygen tension and blood values \u200b\u200bof fetal tissues remain within physiological ranges (Alcazar, UPCH, Lima). However
other studies in infants height and Loret de Mola in Morococha in 1955 (4500 m) found Hb of 18.3 g / dl and Hum in 1976, Cerro de Pasco (4330m) 19.3 g / dl. Although not used the same methodology R. Peñaloza the values \u200b\u200bfound are higher than perhaps it could also be a finding in high-rise levels that need to be confirmed. Doris Maldonado
Auza Cerro de Pasco (4330 m) in 1985 found a reduction of hemoglobin of infants from the first day until the seventh day in peripheral blood as shown below.
Hemoglobin in infants in Cerro de Pasco
This reduction could be due to postpartum hemoconcentration to be compensated in the first days of life to achieve normal hemoglobin level in the newborn it has not found evidence of increased bone marrow erythropoiesis in the newborn height (Reynafarge).
Erythropoiesis begins in the embryo from the third week after conception. In the first 2 months of age is established in the liver, about six months gradually migrated to the marrow spaces, and at birth the majority of blood formation occurs normally in the bone marrow with normal erythropoiesis.
The infant in height, as we have seen, has a normal erythropoiesis and can not determine when life begins it increased leading to high physiological erythrocytosis.
SUMMARY The erythropoiesis of the Newborns at high altitude is independent of the maternal factors and of the high altitude hypoxia at 3600m above sea level, probably due to the protective function of the placenta.
The hematological values of the healthy pregnant women at high altitude (3600m above sea level) compared with pregnant women who live at sea level are statistically different; however, the hematological values of newborns at high altitude compared with the values of newborns at sea level are statistically similar.
Eritropoiesis begins in the embryo three weeks after conception. In the first 2 months of life is established in the liver, near six months it gradually migrates to the marrow spaces and at birth the majority of blood formation is normally produced in the bone marrow.
The infant erithropoiesis at high altitude is normal and we CAN NOT determine at age Which Begins Physiological erithrocytosis high altitude.
Dr. Achilles Monroy
