Circulation, Vol 58, 1072-1083, Copyright © 1978 by American Heart Association
DJ Sahn, A DeMaria, J Kisslo and A Weyman
Four hundred M-mode echocardiographic surveys were distributed to determine
interobserver variability in M-mode echocardiographic measurements. This
was done with a view toward examining the need and determining the criteria
for standardization of measurement. Each survey consisted of five M-mode
echocardiograms with a calibration marker, measured by the survey
participants anonymously. The echoes were judged of adequate quality for
measurement of structures. Seventy- six of the 400 (19%) were returned,
allowing comparison of interobserver variability as well as examination of
the measurement criteria which were used. Mean measurements and percent
uncertainty were derived for each structure for each criterion of
measurement. For example, for the aorta, 33% of examiners measured the
aorta as an outer/inner or leading edge dimension, and 20% measured it as
an outer/outer dimension. The percent uncertainty for the measurement (1.97
SD divided by the mean) showed a mean of 13.8% for the 25 packets of five
echoes measured using the former criteria and 24.2% using the latter
criteria. For ventricular chamber and cavity measurements, almost one-half
of the examiners used the peak of the QRS and one-half of the examiners
used the onset of the QRS for determining end- diastole. Estimates of the
percent of measurement uncertainty for the septum, posterior wall and left
ventricular cavity dimension in this study were 10--25%. They were much
higher (40--70%) for the right ventricular cavity and right ventricular
anterior wall. The survey shows significant interobserver and
interlaboratory variation in measurement when examining the same echoes and
indicates a need for ongoing education, quality control and standardization
of measurement criteria. Recommendations for new criteria for measurement
of M-mode echocardiograms are offered.
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Recommendations regarding quantitation in M-mode echocardiography: results of a survey of echocardiographic measurements
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E. Ingelsson, M. J. Pencina, D. Levy, J. Aragam, G. F. Mitchell, E. J. Benjamin, and R. S. Vasan Aortic Root Diameter and Longitudinal Blood Pressure Tracking Hypertension, September 1, 2008; 52(3): 473 - 477. [Abstract] [Full Text] [PDF]
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M. B. Kronborg, P. T. Mortensen, R. E. Kirkfeldt, and J. C. Nielsen Very long term follow-up of cardiac resynchronization therapy: Clinical outcome and predictors of mortality Eur J Heart Fail, August 1, 2008; 10(8): 796 - 801. [Abstract] [Full Text] [PDF]
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R. W.W. Biederman, M. Doyle, A. A. Young, R. B. Devereux, E. Kortright, G. Perry, J. N. Bella, S. Oparil, D. Calhoun, G. M. Pohost, et al. Marked Regional Left Ventricular Heterogeneity in Hypertensive Left Ventricular Hypertrophy Patients: A Losartan Intervention for Endpoint Reduction in Hypertension (LIFE) Cardiovascular Magnetic Resonance and Echocardiographic Substudy Hypertension, August 1, 2008; 52(2): 279 - 286. [Abstract] [Full Text] [PDF]
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S. Camposilvan, O. Milanesi, G. Stellin, A. Pettenazzo, L. Zancan, and L. D'Antiga Liver and Cardiac Function in the Long Term After Fontan Operation Ann. Thorac. Surg., July 1, 2008; 86(1): 177 - 182. [Abstract] [Full Text] [PDF]
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A. Colao, R. Pivonello, M. Galderisi, P. Cappabianca, R. S. Auriemma, M. Galdiero, L. M. Cavallo, F. Esposito, and G. Lombardi Impact of Treating Acromegaly First with Surgery or Somatostatin Analogs on Cardiomyopathy J. Clin. Endocrinol. Metab., July 1, 2008; 93(7): 2639 - 2646. [Abstract] [Full Text] [PDF]
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S Sookoian, T F Gianotti, and C J Pirola Role of the C-344T aldosterone synthase gene variant in left ventricular mass and left ventricular structure-related phenotypes Heart, July 1, 2008; 94(7): 903 - 910. [Abstract] [Full Text] [PDF]
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A. Baltabaeva, M. Marciniak, B. Bijnens, J. Moggridge, F. J. He, T. F. Antonios, G. A. MacGregor, and G. R. Sutherland Regional left ventricular deformation and geometry analysis provides insights in myocardial remodelling in mild to moderate hypertension Eur J Echocardiogr, July 1, 2008; 9(4): 501 - 508. [Abstract] [Full Text] [PDF]
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S. Basavarajaiah, A. Boraita, G. Whyte, M. Wilson, L. Carby, A. Shah, and S. Sharma Ethnic differences in left ventricular remodeling in highly-trained athletes relevance to differentiating physiologic left ventricular hypertrophy from hypertrophic cardiomyopathy. J. Am. Coll. Cardiol., June 10, 2008; 51(23): 2256 - 2262. [Abstract] [Full Text] [PDF]
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E. Lim, A. Ali, P. Theodorou, I. Sousa, H. Ashrafian, T. Chamageorgakis, A. Duncan, M. Henein, P. Diggle, and J. Pepper Longitudinal Study of the Profile and Predictors of Left Ventricular Mass Regression After Stentless Aortic Valve Replacement Ann. Thorac. Surg., June 1, 2008; 85(6): 2026 - 2029. [Abstract] [Full Text] [PDF]
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J. Du, J. Liu, H.-Z. Feng, M. M. Hossain, N. Gobara, C. Zhang, Y. Li, P.-Y. Jean-Charles, J.-P. Jin, and X.-P. Huang Impaired relaxation is the main manifestation in transgenic mice expressing a restrictive cardiomyopathy mutation, R193H, in cardiac TnI Am J Physiol Heart Circ Physiol, June 1, 2008; 294(6): H2604 - H2613. [Abstract] [Full Text] [PDF]
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H. A. Chami, R. B. Devereux, J. S. Gottdiener, R. Mehra, M. J. Roman, E. J. Benjamin, and D. J. Gottlieb Left Ventricular Morphology and Systolic Function in Sleep-Disordered Breathing: The Sleep Heart Health Study Circulation, May 20, 2008; 117(20): 2599 - 2607. [Abstract] [Full Text] [PDF]
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P. Lindqvist, G. Wikstrom, and A. Waldenstrom The use of E/Em and the time interval difference of isovolumic relaxation (TIVRT-IVRTm) in estimating left ventricular filling pressures Eur J Heart Fail, May 1, 2008; 10(5): 490 - 497. [Abstract] [Full Text] [PDF]
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L. Thomas, M. Hoy, K. Byth, and N. B. Schiller The left atrial function index: a rhythm independent marker of atrial function Eur J Echocardiogr, May 1, 2008; 9(3): 356 - 362. [Abstract] [Full Text] [PDF]
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G. Cheng, M. R. Zile, M. Takahashi, C. F. Baicu, D. D. Bonnema, F. Cabral, D. R. Menick, and G. Cooper 4th A direct test of the hypothesis that increased microtubule network density contributes to contractile dysfunction of the hypertrophied heart Am J Physiol Heart Circ Physiol, May 1, 2008; 294(5): H2231 - H2241. [Abstract] [Full Text] [PDF]
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H. M. Ippisch, T. H. Inge, S. R. Daniels, B. Wang, P. R. Khoury, S. A. Witt, B. J. Glascock, V. F. Garcia, and T. R. Kimball Reversibility of Cardiac Abnormalities in Morbidly Obese Adolescents J. Am. Coll. Cardiol., April 8, 2008; 51(14): 1342 - 1348. [Abstract] [Full Text] [PDF]
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I. Garcia-Bolao, B. Lopez, A. Macias, J. J. Gavira, P. Azcarate, and J. Diez Impact of collagen type I turnover on the long-term response to cardiac resynchronization therapy Eur. Heart J., April 1, 2008; 29(7): 898 - 906. [Abstract] [Full Text] [PDF]
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A. Macias, J.-J. Gavira, S. Castano, E. Alegria, and I. Garcia-Bolao Left ventricular pacing site in cardiac resynchronization therapy: Clinical follow-up and predictors of failed lateral implant Eur J Heart Fail, April 1, 2008; 10(4): 421 - 427. [Abstract] [Full Text] [PDF]
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B. Vasapollo, G. P. Novelli, and H. Valensise Total Vascular Resistance and Left Ventricular Morphology as Screening Tools for Complications in Pregnancy Hypertension, April 1, 2008; 51(4): 1020 - 1026. [Abstract] [Full Text] [PDF]
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