Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

TWIN PREGNANCY

TWIN PREGNANCY Single ovum twinning appears to be mainly a chance phenomenon. Double ovum twinning apparently is influenced by heredity, age and parity. In the first forty years of the obstetric department of Johns Hopkins Hospital, 521 cases of twinning occurred in the combined hospital and home delivery services, or about one set of twins in every eighty pregnancies, counting both viable pregnancies and the abortions. This ratio nearly agrees with that of the whole birth registration area of the United States. In a comprehensive study of this experience, Guttmacher1 has published two papers and anticipates several others. Two methods are commonly employed to differentiate single from double ovum twins: first, the study of the twins themselves; second, the study of the placental relations. The diagnosis by the first method is best made when the twins are between 2 and 4 years of age. Numerous physical criteria must be satisfied. To http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png JAMA American Medical Association

TWIN PREGNANCY

JAMA , Volume 113 (12) – Sep 16, 1939
Download PDF
1 page

TWIN PREGNANCY

Abstract


Single ovum twinning appears to be mainly a chance phenomenon. Double ovum twinning apparently is influenced by heredity, age and parity. In the first forty years of the obstetric department of Johns Hopkins Hospital, 521 cases of twinning occurred in the combined hospital and home delivery services, or about one set of twins in every eighty pregnancies, counting both viable pregnancies and the abortions. This ratio nearly agrees with that of the whole birth registration area of the...
Loading next page...
 
/lp/american-medical-association/twin-pregnancy-LmBIQo3amw

References (0)

References for this paper are not available at this time. We will be adding them shortly, thank you for your patience.

Publisher
American Medical Association
Copyright
Copyright © 1939 American Medical Association. All Rights Reserved. Applicable FARS/DFARS Restrictions Apply to Government Use.
ISSN
0098-7484
eISSN
1538-3598
DOI
10.1001/jama.1939.02800370049016
Publisher site
See Article on Publisher Site

Abstract

Single ovum twinning appears to be mainly a chance phenomenon. Double ovum twinning apparently is influenced by heredity, age and parity. In the first forty years of the obstetric department of Johns Hopkins Hospital, 521 cases of twinning occurred in the combined hospital and home delivery services, or about one set of twins in every eighty pregnancies, counting both viable pregnancies and the abortions. This ratio nearly agrees with that of the whole birth registration area of the United States. In a comprehensive study of this experience, Guttmacher1 has published two papers and anticipates several others. Two methods are commonly employed to differentiate single from double ovum twins: first, the study of the twins themselves; second, the study of the placental relations. The diagnosis by the first method is best made when the twins are between 2 and 4 years of age. Numerous physical criteria must be satisfied. To

Journal

JAMA – American Medical Association

Published: Sep 16, 1939

There are no references for this article.