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.
|Translated title of the contribution||Electrocardiographic changes in the first six weeks of life of children born in Mexico City. Physiological implication|
|Number of pages||8|
|Journal||Archivos del Instituto de Cardiología de México|
|State||Published - 1976|