Hare, JL and Brown, JK and Leano, R and Jenkins, C and Woodward, N and Marwick, TH, Use of myocardial deformation imaging to detect preclinical myocardial dysfunction before conventional measures in patients undergoing breast cancer treatment with trastuzumab, American Heart Journal, 158, (2) pp. 294-301. ISSN 0002-8703 (2009) [Refereed Article]
Copyright 2009 Mosby Inc.
Methods Sequential echocardiograms (n = 152) were performed in 35 female patients (51 ± 8 years) undergoing trastuzumab therapy for human epidermal growth factor receptor type 2–positive breast cancer. Left ventricular EF was measured by 2- and 3-dimensional (2D and 3D) echocardiography, and myocardial deformation was assessed using tissue Doppler imaging and 2D-based (speckle-tracking) strain and SR. Change over time was compared every 3 months between baseline and 12 months.
Results There was no overall change in 3D-EF, 2D-EF, myocardial E-velocity, or strain. However, there were significant reductions seen in tissue Doppler imaging SR (P < .05), 2D-SR (P < .001), and 2D radial SR (P < .001). A drop ≥1 SD in 2D longitudinal SR was seen in 18 (51%) patients; 13 (37%) had a similar drop in radial SR. Of the 18 patients with reduced longitudinal SR, 3 had a concurrent reduction in EF ≥10%, and another 2 showed a reduction over 20 months follow-up.
Conclusions Myocardial deformation identifies preclinical myocardial dysfunction earlier than conventional measures in women undergoing treatment with trastuzumab for breast cancer.
|Item Type:||Refereed Article|
|Research Division:||Medical and Health Sciences|
|Research Group:||Cardiorespiratory Medicine and Haematology|
|Research Field:||Cardiology (incl. Cardiovascular Diseases)|
|Objective Group:||Clinical Health (Organs, Diseases and Abnormal Conditions)|
|Objective Field:||Cardiovascular System and Diseases|
|Author:||Marwick, TH (Professor Tom Marwick)|
|Web of Science® Times Cited:||129|
|Deposited By:||Menzies Institute for Medical Research|
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