Evaluation of the Effects of Obesity on Heart Functions Using Standard Echocardiography and Pulsed Wave Tissue Doppler Imaging

Abstract

In obese patients of older ages, there is evidence of left and right ventricular dysfunction.

Evaluation of Left Ventricular Circumferential Contraction Functions in Obese Patients

“…Moreover, literature knowledge also supports this ascertainment of ours. [7][8][9]27 On the other hand, the same result was not found when LV circumferential contraction functions were examined. It was discerned that none of the pw-TDI parameters, which evaluate LV circumferential contraction functions, were affected by obesity.…”

“…These differences practically generate two results. First result is that RV differences become more prominent compared to LV differences in obese patients 9 . Second result is that LV subendocardial layer is affected directly by these differences due to its being supplied from systemic circulation via LV cavity penetration and, therefore, LV longitudinal contraction abnormalities (LVLCA) are more often seen in obese patients.…”

“…First result is that RV differences become more prominent compared to LV differences in obese patients. 9 Second result is that LV subendocardial layer is affected directly by these differences due to its being supplied from systemic circulation via LV cavity penetration and, therefore, LV longitudinal contraction abnormalities (LVLCA) are more often seen in obese patients. How the functions of subepicardial layer responsible from LV circumferential contractions supplied from coronary arteries are affected by obesity, has not yet been known sufficiently.…”

“…Similar changes are also true for the right ventricular (RV) structure and functions 7,8 . Furthermore, RV changes in obese patients are more prominent than LV changes because preload alteration is evident compared to afterload alterations in obesity 9 . Unfortunately, in the literature, there was no finding about subepicardial functions that contribute LV circumferential contraction in obese patients.…”

“…7,8 Furthermore, RV changes in obese patients are more prominent than LV changes because preload alteration is evident compared to afterload alterations in obesity. 9 Unfortunately, in the literature, there was no finding about subepicardial functions that contribute LV circumferential contraction in obese patients. When it is taken into account that LV contractions are three different types (circumferential contraction, longitudinal contraction, and rotation), it is seen that diagnostic methods, which examine LV longitudinal contractions, are used more frequently than LV circumferential contractions.…”