We're unable to sign you in at this time. Please try again in a few minutes.
We were able to sign you in, but your subscription(s) could not be found. Please try again in a few minutes.
There may be a problem with your account. Please contact the AMA Service Center to resolve this issue.
Contact the AMA Service Center:
Telephone: 1 (800) 262-2350 or 1 (312) 670-7827  *   Email: subscriptions@jamanetwork.com
Error Message ......
Article |


Edward L. King, M.D.; Isadore Dyer, M.D.; John A. King, M.D.; Milton J. Hoffman, M.D.
JAMA. 1959;170(10):1165-1169. doi:10.1001/jama.1959.03010100027009.
Text Size: A A A
Published online


The advisability of routine roentgenographic measurements of the fetal head and maternal pelvis in obstetrics needs to be reconsidered because of the known hazards of ionizing radiation. In the years 1946-1947, among 702 patients, antenatal x-ray pelvimetry was used in 38.8%, while in the years 1956-1957, antenatal pelvimetry was restricted to 7.4% of the 597 patients. In the 1946-1947 series, 2 % of the term babies were lost from conditions not related to the delivery, such as erythroblastosis and toxemia, while in the 1956-1957 series the term fetal loss was 0.8% from conditions not related to delivery. The decreased resort to x-ray pelvimetry did not increase the fetal risk. A series of 1,200 cases was analyzed in order to determine how helpful x-ray pelvimetry was in determining the need for cesarean section, and the evidence indicated that careful clinical study of the pelvis gave sufficient information in 70 to 80% of obstetric patients. Antenatal x-ray pelvimetry is therefore to be deprecated as a routine procedure, but it should not be witheld in critical situations.


Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?




Also Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
Please click the checkbox indicating that you have read the full article in order to submit your answers.
Your answers have been saved for later.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.


Some tools below are only available to our subscribers or users with an online account.

0 Citations

Sign in

Purchase Options

• Buy this article
• Subscribe to the journal
• Rent this article ?

Related Content

Customize your page view by dragging & repositioning the boxes below.