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Tracheal Carinal Angle and Left Atrial Size

Tracheal Carinal Angle and Left Atrial Size Abstract Left atrial enlargement is a significant finding, usually indicating elevated left ventricular end-diastolic pressure. An increased tracheal carinal angle has been reported as one indicator on chest radiography of left atrial enlargement. This study retrospectively compared echocardiographically determined left atrial size with carinal angle on plain films. Enlarged left atria and paired, age-matched normal left atria by echocardiography were selected. The carinal angle was measured on roentgenogram (standard and portable films) by goniometer. The left atrium could be accurately predicted to be larger than 5.0 cm in diameter if the carinal angle was 100° or greater. A carinal angle greater than 100° is an easy, inexpensive, reliable method of predicting left atrial enlargement. (Arch Intern Med. 1991;151:307-308) References 1. Steele JM. Compression and displacement of the bronchi in mitral stenosis . Am Heart J. 1928;4:53-58.Crossref 2. Weens SH, Gay BB. The chest roentgenogram . In: Hurst JW, Logue RB, Schlant RC, Wenger NK, eds. The Heart . New York, NY: McGraw-Hill International Book Co; 1978:312-318. 3. Lane EJ, Walen JP. A new sign of left atrial enlargement: posterior displacement of the left bronchial tree . Radiology. 1969;93:279-284.Crossref 4. Steele JM, Paterson R. Distortion of the bronchi by left auricular enlargement . Am Heart J. 1929;4:692-708.Crossref 5. Turner AF. Chest radiograph: a systematic approach to interpretation for the internist . Curr Probl Cardiol. 1978;3:43-45. 6. Haskin PH, Goodman LR. Normal tracheal bifurcation angle: a reassessment . AJR Am J Roentgenol. 1982;139:879-882.Crossref 7. Manucheki A, Keats TE, O'Brien WM. Angle of tracheal bifurcation: its normal mensuration . Am J Radiol. 1970;180:546-549. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Internal Medicine American Medical Association

Tracheal Carinal Angle and Left Atrial Size

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Publisher
American Medical Association
Copyright
Copyright © 1991 American Medical Association. All Rights Reserved.
ISSN
0003-9926
eISSN
1538-3679
DOI
10.1001/archinte.1991.00400020065014
Publisher site
See Article on Publisher Site

Abstract

Abstract Left atrial enlargement is a significant finding, usually indicating elevated left ventricular end-diastolic pressure. An increased tracheal carinal angle has been reported as one indicator on chest radiography of left atrial enlargement. This study retrospectively compared echocardiographically determined left atrial size with carinal angle on plain films. Enlarged left atria and paired, age-matched normal left atria by echocardiography were selected. The carinal angle was measured on roentgenogram (standard and portable films) by goniometer. The left atrium could be accurately predicted to be larger than 5.0 cm in diameter if the carinal angle was 100° or greater. A carinal angle greater than 100° is an easy, inexpensive, reliable method of predicting left atrial enlargement. (Arch Intern Med. 1991;151:307-308) References 1. Steele JM. Compression and displacement of the bronchi in mitral stenosis . Am Heart J. 1928;4:53-58.Crossref 2. Weens SH, Gay BB. The chest roentgenogram . In: Hurst JW, Logue RB, Schlant RC, Wenger NK, eds. The Heart . New York, NY: McGraw-Hill International Book Co; 1978:312-318. 3. Lane EJ, Walen JP. A new sign of left atrial enlargement: posterior displacement of the left bronchial tree . Radiology. 1969;93:279-284.Crossref 4. Steele JM, Paterson R. Distortion of the bronchi by left auricular enlargement . Am Heart J. 1929;4:692-708.Crossref 5. Turner AF. Chest radiograph: a systematic approach to interpretation for the internist . Curr Probl Cardiol. 1978;3:43-45. 6. Haskin PH, Goodman LR. Normal tracheal bifurcation angle: a reassessment . AJR Am J Roentgenol. 1982;139:879-882.Crossref 7. Manucheki A, Keats TE, O'Brien WM. Angle of tracheal bifurcation: its normal mensuration . Am J Radiol. 1970;180:546-549.

Journal

Archives of Internal MedicineAmerican Medical Association

Published: Feb 1, 1991

References