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Electrocardiography changes in newborn infants during the 1st 6 weeks of life in Mexico City. Physiological implications

Cueto García, L.; Martínez Natera, O.; Meaney, E.

Archivos del Instituto de Cardiologia de Mexico 46(5): 571-578

1976

ISSN/ISBN: 0020-3785
PMID: 1015902
Document Number: 109769
The electrocardiograms of 150 newborns who were born in Mexico City (2,240 m. above sea level) were obtained in the first 24 hours of life and six weeks later. The electrocardiographic changes were similar to those observed at sea level; AQRS shifted to the left, the T waves became negative in the right precordial leads and the R/S relation increased in the left precordial leads. Mid-altitude does not affect the pulmonary vascular maturation of the normal newborn.

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Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
Barquera, R.; Martínez-Álvarez, J.C.és.; Hernández-Zaragoza, D.I.íz.; Bravo-Acevedo, A.; Juárez-Nicolás, F.; Arriaga-Perea, A.ín.J.ó; Vega-Martínez, M.ía.D.R.; Ortega-Yáñez, A.; Benítez-Arvizu, G.; Arrieta-Bolaños, E.; Clayton, S.; Juárez-Cortés, E.D.; López-Gil, C.ón.; García-Álvarez, R.; Arrazola-García, M.ía.A.; Martínez-Bezies, V.; Juárez-Barreto, V.; Ramos-de la Cruz, F.D.R.ío.; Macías-Medrano, R.M.ía.; Méndez-Mani, P.; Escutia-González, A.; Montiel-Hernández, G.D.; Immel, A.; Pavón-Vargas, M.ía.d.L.Án.; Salgado-Galicia, N.; Novelo-Garza, B.ár.; Zúñiga, J.ín.; Yunis, E.J.; Bekker-Méndez, C.; Granados, J. 2020: Genetic diversity of HLA system in six populations from Mexico City Metropolitan Area, Mexico: Mexico City North, Mexico City South, Mexico City East, Mexico City West, Mexico City Center and rural Mexico City Human Immunology 81(9): 539-543
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