These preliminary results demonstrate that ICRT after coronary intervention is feasible and is associated with an acceptable degree of complications and lower rates of angiographic restenosis indexes.

The accuracy of determining left ventricular function from echocardiography was assessed in 26 children (group I) with cineangiographically-determined normal left ventricular volume (LVV) and 28 children (group II) with large left ventricular volumes. Conventional LV echo dimensions were compared to the cineangiographic LV anterior-posterior minor axis (LVmA) and LVV. Very good correlations were found in group I between LV end-diastolic echo dimensions (LVEDD) and cine LVmA (r = 0.91) and between LVEDD and LV end-diastolic volume (LVEDV) by cine in group I (r = 0.86). In group II correlations were less accurate between LVEDD and diastolic LVmA and between LVEDD and LVEDV. There was poor correlation between the cine and echo percent of shortening (r = 0.41) and velocity of circumferential fiber shortening (VCF) (r = 0.51). This study demonstrates that M-mode echocardiography is a very useful method for determining LV dimensions in children with normal LV volume, but is less accurate in children with left ventricular volume overload or with abnormal septal orientation or postoperative status after ventriculotomy.

No abstract

SUMMARY The effect of pressure or volume overload on the geometry of the left ventricle (LV) was determined in order to examine the feasibility and accuracy of LV volume determinations from one minor axis or two dimensions (one minor axis and the longest length). The longest length (LL) and minor axis (MA) in both the anteroposterior (AP) view and lateral (LAT) view were determined from the LV cine silhouette in patients with normal LV volume and pressure (group 1), LV pressure (LVP) overload group (LVP > 140 mm Hg, group 2), and LV volume overload group (LV end-diastolic volume > 124% of normal, group 3). The ratio of the MA to the LL, LEFT VENTRICULAR (LV) VOLUME DETER-MINATION in children with congenital heart disease (CHD) is useful in evaluating LV function,' intracardiac and extracardiac shunts2 ' and is the most reliable method for quantitating pulmonary blood flow in patients with transposition of the great vessels (TGV).44 In adult patients, LV volume can be determined from either biplane cineangiocardiogram (cine)7' or single plane cine.9-11 In children, however, LV volumes have been quantitated only from biplane cine but not single plane cine. More recently the anterior-posterior LV dimension obtained from single crystal echocardiography has been utilized to determine LV volume and function. Left ventricular cross-sectional area can be obtained using more recent echocardiographic equipment.12 For these reasons it is important to delineate the effect of LV pressure or volume overload on the geometry of the left ventricle, and evaluate the accuracy of determining LV volume and function from one or two ventricular dimensions. Method Patient PopulationSeventy-seven patients who underwent diagnostic cardiac catheterization were divided according to LV pressure and end-diastolic volume into three groups:Group 1 was composed of 25 patients with normal left ventricular end-diastolic volume (LVEDV). Normal LVEDV was defined as being in the range of the normal volume ± 2 SD (LVEDV = 74% to 124% of the predicted From the

No abstract