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Pericardial thickness measured with transesophageal echocardiography: feasibility and potential clinical usefulness.

Abstract：

OBJECTIVES:This study assessed the reliability of transesophageal echocardiographic measurements of pericardial thickness and the potential diagnostic usefulness of this technique. BACKGROUND:Transthoracic echocardiography cannot reliably detect thickened pericardium. The superior resolution achieved with transesophageal echocardiography should allow better pericardial definition. METHODS:Pericardial thickness measured at 26 locations in 11 patients with constrictive pericarditis who underwent intraoperative transesophageal echocardiography was compared with pericardial thickness measured with electron beam computed tomography. Intraobserver and interobserver variabilities were determined. Pericardial thickness was then measured in 21 normal subjects. With these values as a guide, two observers reviewed 37 transesophageal echocardiographic studies to determine whether echocardiographic measurement of pericardial thickness could be used to distinguish diseased from normal pericardium. RESULTS:The correlation between echocardiographic and computed tomographic measurements (r > or = 0.95, SE < or = 0.06 mm, p < 0.0001) was excellent. The +/-2 SD limits of agreement were +/-1.0 mm or less for pericardial thickness < 5.5 mm and +/-2.0 mm or less for the entire range of thicknesses. Intraobserver and interobserver agreements were good. Mean normal pericardial thickness was 1.2 +/- 0.8 mm (+/-2 SD) and did not exceed 2.5 mm. Pericardial thickness > or = 3 mm on transesophageal echocardiography was 95% sensitive and 86% specific for the detection of thickened pericardium. CONCLUSIONS:Measurement of pericardial thickness with transesophageal echocardiography is reproducible and should be a valuable adjunct in assessing constrictive pericarditis.

journal_name

J Am Coll Cardiol

journal_title

Journal of the American College of Cardiology

authors

Ling LH,Oh JK,Tei C,Click RL,Breen JF,Seward JB,Tajik AJ

doi

10.1016/s0735-1097(97)82756-8

subject

Has Abstract

pub_date

1997-05-01 00:00:00

pages

1317-23

issue

6

eissn

0735-1097

issn

1558-3597

pii

S0735109797827568

journal_volume

29

pub_type

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