This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via Google Scholar Google Scholar Articles by ALIMURUNG, M. M. Articles by MASSELL, B. F. Search for Related Content PubMed PubMed Citation Articles by ALIMURUNG, M. M. Articles by MASSELL, B. F.

(Circulation. 1951;4:420.)
© 1951 American Heart Association, Inc.

---

The Unipolar Precordial and Extremity Electrocardiogram in Normal Infants and Children

MARIANO M. ALIMURUNG M.D.¹; LESTER G. JOSEPH M.D.¹; ALEXANDER S. NADAS M.D.¹; BENEDICT F. MASSELL M.D.¹

¹ From the Children's Hospital and House of the Good Samaritan, Children's Medical Center, and the Department of Pediatrics, Harvard Medical School, Boston, Mass.

Information regarding the normal unipolar electrocardiogram in the young ages is very limited. This study furnishes data obtained from 521 normal infants and children from birth to 13 years, using the V chest leads and the aV limb leads. Four age groups were noted in the evolution of the newborn pattern into the adult pattern as mainly reflected by the configuration of the QRS complex in V₁. Detailed analyses of the rest of the unipolar electrocardiogram disclosed other distinctive features both in wave patterns and voltages which differ significantly not only from adult findings but also among the various age groups noted.