Jellis, CL and Jenkins, C and Leano, R and Martin, JH and Marwick, TH, Reduced end-systolic pressure-volume ratio response to exercise, Circulation: Cardiovascular Imaging, 3, (4) pp. 443-449. ISSN 1941-9651 (2010) [Refereed Article]
Copyright 2010 American Heart Association
Methods and Results—Resting and exercise echocardiography was performed in 167 apparently healthy patients with type 2 diabetes mellitus (97 men; age, 55±10 years) without ischemia, other cardiac disease, or noncardiac complications of diabetes. Standard echocardiographic and color tissue Doppler measures (early diastolic tissue velocity, strain, and strain rate) were acquired at baseline and peak stress in apical long-axis views. Calibrated integrated backscatter was calculated from a resting parasternal long-axis view. ΔSP/ESV was calculated as [(peak stress SP/ESV)(rest SP/ESV)]. The 83 subjects who demonstrated a ΔSP/ESV ≤12 mm Hg/mL/m2 after exercise were older and had lower peak heart rate, resting diastolic and stress systolic tissue velocity, stress ejection fraction, and exercise capacity than the remainder. There was no significant association between ΔSP/ESV and metabolic derangement or echocardiographic measures of deformation or backscatter. Change in Sm and stress ejection fraction were independent correlates of ΔSP/ESV.
Conclusions—ΔSP/ESV ratio is associated with established features of subclinical diabetic heart disease as well as determinants of contractile reserve (peak hemodynamic response and stress systolic function). Peak ESPVR is poorly associated with markers of myocardial dysfunction.
|Item Type:||Refereed Article|
|Keywords:||diabetes mellitus type 2, blood pressure, end-systolic volume, exercise echocardiography|
|Research Division:||Biomedical and Clinical Sciences|
|Research Group:||Cardiovascular medicine and haematology|
|Research Field:||Cardiology (incl. cardiovascular diseases)|
|Objective Group:||Clinical health|
|Objective Field:||Clinical health not elsewhere classified|
|UTAS Author:||Marwick, TH (Professor Tom Marwick)|
|Web of Science® Times Cited:||15|
|Deposited By:||Menzies Institute for Medical Research|
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