Asset Details
Do you wish to reserve the book?
Left ventricular torsional dynamics post exercise for LV diastolic function assessment
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Left ventricular torsional dynamics post exercise for LV diastolic function assessment
Do you wish to request the book?
Left ventricular torsional dynamics post exercise for LV diastolic function assessment
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Left ventricular torsional dynamics post exercise for LV diastolic function assessment
2014
Overview
Aims
2D speckle tracking echocardiography allows for assessment of left ventricular (LV) torsional deformation as a composite function of the radial, longitudinal and circumferential fibres. We test the hypothesis that post-exercise LV torsional dynamics are more sensitive markers for myocardial dysfunction than resting measures, and better predictors for exercise capacity compared to post-exercise LV diastolic filling pressure (E/e’).
Methods
We studied 88 patients referred for stress echocardiogram. Treadmill exercise was performed using Bruce protocol, and echo images were acquired using GE Vivid 7. LV rotational dynamics were analysed by speckle tracking method using the GE ECHOPAC software. Tertiles were defined according to exercise capacity measured by the achieved metabolic equivalents (METS) adjusted for age and gender. Comparison was made between LV torsional dynamics and E/e’ to correlate with METS to predict exercise capacity.
Results
Mean age of the study population was 58 years, 48% females. Patients with systolic dysfunction or evidence of ischaemia were excluded from the analysis. No significant correlation was found between METS and LV torsion measures at rest. There was statistically significant correlation between METS and post-exercise LV torsion (r=0.34, p=0.001), twist velocity increase (r=0.27, p=0.01), and incremental change in torsion (r=0.22, p<0.05). In addition, a correlation was also shown between post-exercise E/e’ and METS (r=-0.33, p=0.002).
Conclusion
Post-exercise LV torsional dynamics correlate with exercise capacity and may be a useful tool for assessing LV myocardial function in subjects with normal LVEF.
Publisher
BioMed Central,Springer Nature B.V
Subject
/ Age
/ Elasticity Imaging Techniques - methods
/ Exercise
/ Female
/ Heart
/ Heart Ventricles - diagnostic imaging
/ Heart Ventricles - physiopathology
/ Humans
/ Imaging
/ Male
/ Medicine
/ NMR
/ Torsion Abnormality - diagnostic imaging
/ Torsion Abnormality - physiopathology
