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 |

Value of Subject Height in Predicting Lower Esophageal Sphincter Location

Annamaria Staiano, MD; Ray E. Clouse, MD
Am J Dis Child. 1991;145(12):1424-1427. doi:10.1001/archpedi.1991.02160120092025.
Text Size: A A A
Published online


• Subject height and lower esophageal sphincter location were determined in 213 children and adults to determine whether the anthropometric variable could be used to accurately predict sphincter location across all age ranges. The upper margin of the lower esophageal sphincter was determined with a nasally placed manometry catheter. Height was highly predictive of lower esophageal sphincter location across all subject groups (r2 =.96) and in the youngest subset of subjects (≤2 years of age, r2 =.88). The predictive ability of height remained significant but progressively decreased in the four older subject groups (>2 and ≤10 years of age, r2 =.74; >10 and ≤20 years of age, r2 =.66; >20 and ≤40 years, r2 =.58; and >40 years, r2 =.49). The regression equation that described subjects 2 years of age or younger (L=0.22[H]+4.92, where L is the location in centimeters from the nares and H is the height in centimeters) correctly predicted lower esophageal sphincter location within 1.0 cm in 90% of these subjects. In the older subject groups, predicted lower esophageal sphincter location was in error by greater than 2 cm in 25% to 35% of the subjects, even when age group—specific regression equations were used. Decreased predictive ability related to both increasing age and increasing height. We conclude that lower esophageal sphincter location can be predicted from height in subjects up to 2 years of age. The prediction is sufficiently accurate in this age group to allow placement of pH probes without manometric measurements.

(AJDC. 1991;145:1424-1427)


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.