Echocardiographic evaluation of aortic root size in cats with hypertrophic cardiomyopathy

Figures

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  Fig. 1.. Graphical illustration of the measurements of the echocardiographic aortic root. Right parasternal long-axis 5-chamber view optimized for the left ventricular outflow tract and the aortic root. The inner edge-to-inner edge (blood tissue interface-to-blood tissue interface) method was used for placement of the measurement cursor. 1, dimension of the aortic ring at the ventriculo-arterial junction. 2, dimension of the sinus of Valsalva. 3, dimension of the sinotubular junction. 4, dimension of the ascending aorta (measured at least 5−10 mm distal to the sinotubular junction). 5, dimension of the sinus height (only measured at end-diastole). LV, left ventricle.

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  Fig. 2.. Scatter plot illustrating the dimension (median, minimum, and maximum) of the ascending aorta in diastole (AscAod) in apparently healthy cats (Control; n=220) and cats with hypertrophic cardiomyopathy (HCM; n=161), cats with either HCM with hyperthyroidism (HT4) or isolated HT4 (HT4/HCM; n=21), and cats with systemic hypertension (SH; n=37). There was a statistical difference between HCM and Control (P<0.0001) and between HT4/HCM and Control (P=0.008) but not between SH and Control (P>0.05).

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  Fig. 3.. Scatter plot illustrating the dimension (median, minimum, and maximum) of the sinotubular junction in diastole (STJd) in apparently healthy cats (Control; n=220) and cats with hypertrophic cardiomyopathy (HCM; n=161), cats with either HCM with hyperthyroidism (HT4) or isolated HT4 (HT4/HCM; n=21), and cats with systemic hypertension (SH; n=37). There was a statistical difference between the SH and Control (P=0.013) and between SH and HT4/HCM (P=0.017) but not between HCM and Control (P>0.05).

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  Fig. 4.. Scatter plot illustrating the dimension (median, minimum, and maximum) of the aortic valve ring in systole (AVs) in apparently healthy cats (Control; n=220), cats with hypertrophic cardiomyopathy (HCM; n=161), cats with either HCM with hyperthyroidism (HT4) or isolated HT4 (HT4/HCM; n=21), and cats with systemic hypertension (SH; n=37). There was a statistical difference between the SH and Control (P=0.045) but not between HCM and Control (P>0.05).

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  Fig. 5.. Scatter plot illustrates the dimension (median, minimum, and maximum) of the sinotubular junction in systole (STJs) in cats with hypertrophic cardiomyopathy (HCM) without (n=64) and with (HOCM; n=97) obstruction. There was a statistical difference between groups (P=0.021).

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  Fig. 6.. Scatter plot illustrating the dimension (median, minimum, and maximum) of the sinotubular junction in diastole (STJd) in cats with hypertrophic cardiomyopathy (HCM) without (n=64) and with (HOCM; n=97) obstruction. There was no statistical difference between groups (P=0.057).