Exercise-induced intra-ventricular gradients as a frequent potential cause of myocardial ischemia in cardiac syndrome X patients

Cardiovascular Ultrasound
Carlos CotrimManuel Carrageta

Abstract

The development of intra-ventricular gradients (IVG) during dobutamine or exercise stress is not infrequent, and can be associated to symptoms during stress. The purpose of this study was to assess the occurrence of IVG during exercise stress echocardiography in cardiac syndrome X patients. We prospectively evaluated 91 patients (pts) mean aged 51 +/- 12 years (age ranged 20 to 75 years old), 44 of whom were women. All pts had angina, positive exercise ECG treadmill testing, normal rest echocardiogram and no coronary artery disease on coronary angiogram (cardiac X syndrome). After complete Doppler echocardiographic evaluation with determination of left ventricular outflow tract index (LVOTi), relative left ventricular wall thickness (RLVWT) and left ventricular end-diastolic volume index (LVDVi), all patients underwent stress echocardiography with two-dimensional and Doppler echographic evaluation during and after treadmill exercise. For analysis purpose patients were divided in 2 groups, according to the development of IVG. Doppler evidence of IVG was found in 33 (36%) of the patients (Group A), with mean age 47 +/- 14 years old (age ranged 20 to 72 years) and with a mean end-systolic peak gradient of 86 +/- 34 mmHg (ranging f...Continue Reading

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Nov 21, 2007·Cardiovascular Ultrasound·Carlos CotrimManuel Carrageta
Mar 29, 2013·Journal of the American Society of Echocardiography : Official Publication of the American Society of Echocardiography·Eyad K AlhajMark V Sherrid

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Citations

Apr 22, 2010·Clinical Research in Cardiology : Official Journal of the German Cardiac Society·I A C VermeltfoortG J J Teule
Jun 12, 2012·Revista Portuguesa De Cardiologia : Orgão Oficial Da Sociedade Portuguesa De Cardiologia = Portuguese Journal of Cardiology : an Official Journal of the Portuguese Society of Cardiology·Nuno CardimJosé Roquette

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