One, two and three-dimensional ultrasound measurements of carotid atherosclerosis before and after cardiac rehabilitation: preliminary results of a randomized controlled trial

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dc.contributor.authorLindenmaier, Tamas J
dc.contributor.authorBuchanan, Daniel N
dc.contributor.authorPike, Damien
dc.contributor.authorHartley, Tim
dc.contributor.authorReid, Robert D
dc.contributor.authorSpence, J D
dc.contributor.authorChan, Richard
dc.contributor.authorSharma, Michael
dc.contributor.authorPrior, Peter L
dc.contributor.authorSuskin, Neville
dc.contributor.authorParraga, Grace
dc.date.accessioned2015-12-18T10:54:45Z
dc.date.available2015-12-18T10:54:45Z
dc.date.issued2013-11-06
dc.identifier.citationCardiovascular Ultrasound. 2013 Nov 06;11(1):39
dc.identifier.urihttp://dx.doi.org/10.1186/1476-7120-11-39
dc.identifier.urihttp://hdl.handle.net/10393/33674
dc.description.abstractAbstract Background It is still not known how patients who are post-transient ischemic attack (TIA) or post-stroke might benefit from prospectively planned comprehensive cardiac rehabilitation (CCR). In this pilot evaluation of a larger ongoing randomized-controlled-trial, we evaluated ultrasound (US) measurements of carotid atherosclerosis in subjects following TIA or mild non-disabling stroke and their relationship with risk factors before and after 6-months of CCR. Methods Carotid ultrasound (US) measurements of one-dimensional intima-media-thickness (IMT), two-dimensional total-plaque-area (TPA), three-dimensional total-plaque-volume (TPV) and vessel-wall-volume (VWV) were acquired before and after 6-months CCR for 39 subjects who had previously experienced a TIA and provided written informed consent to participate in this randomized controlled trial. We maintained blinding for this ongoing study by representing treatment and control groups as A or B, although we did not identify which of A or B was treatment or control. Carotid IMT, TPA, TPV and VWV were measured before and after CCR as were changes in body mass index (BMI), total cholesterol (TC), high-density lipoprotein (HDL), low-density lipoprotein (LDL), triglycerides (TG), systolic blood pressure (SBP) and diastolic blood pressure (DBP). Results There were no significant differences in US measurements or risk factors between groups A and B. There was no significant change in carotid ultrasound measurements for group A (IMT, p = .728; TPA, p = .629; TPV, p = .674; VWV, p = .507) or B (IMT, p = .054; TPA, p = .567; TPV, p = .773; VWV, p = .431) at the end of CCR. There were significant but weak-to-moderate correlations between IMT and VWV (r = 0.25, p = .01), IMT and TPV (r = 0.21, p = .01), TPV and TPA (r = 0.60, p < .0001) and VWV and TPV (r = 0.22, p = .02). Subjects with improved TC/HDL ratios showed improved carotid VWV although, this was not statistically significant. Conclusion In this preliminary evaluation, there were no significant differences in carotid US measurements in the control or CCR group; a larger sample size and/or longer duration is required to detect significant changes in US or other risk factor measurements.
dc.titleOne, two and three-dimensional ultrasound measurements of carotid atherosclerosis before and after cardiac rehabilitation: preliminary results of a randomized controlled trial
dc.typeJournal Article
dc.date.updated2015-12-18T10:54:45Z
dc.language.rfc3066en
dc.rights.holderLindenmaier et al.; licensee BioMed Central Ltd.
CollectionLibre accès - Publications // Open Access - Publications

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