Author + information
- Dala Zakaria,
- Sean Lang,
- Elijah Bolin,
- Jeffrey Gossett,
- Mallikarjuna Rao Rettiganti and
- Thomas Collins
Background: Right ventricular (RV) end-diastolic volume measured by cardiovascular magnetic resonance imaging (CMR) is a criterion for pulmonary valve replacement in patients with tetralogy of Fallot (TOF). We sought to assess the ability of the ratio of echocardiographic, short-axis right and left ventricular end-diastolic area in predicting RV volume on CMR.
Methods: We retrospectively reviewed the echocardiograms of all patients with TOF who underwent CMR at our institution from 2011-2015 and also had an echocardiogram within 6 months of the CMR. The short-axis RV and left ventricular (LV) end-diastolic areas (EDA) were measured and the ratio of the two was calculated. Results were compared with CMR RV end-diastolic volume index (RVEDVi) and RV/LV end-diastolic volume ratio. The sensitivity and specificity values predicting RV volumes >150 ml/m2 were calculated.
Results: Sixty-six patients met inclusion criteria. There were 54 patients with RVEDVi <150 ml/m2 and 12 with RVEDVi >150 ml/m2. RV: LV EDA and CMR RV: LV end-diastolic volume ratio correlated strongly (r= 0.76, p<0.0001). An RV: LV EDA ≥1.88 had an 81% specificity to detect RV volume index >150 ml/m2. An RV: LV EDA ≥1.57 had 90% sensitivity to predict RVEDVi >150 ml/m2 (area under the curve=0.74, confidence interval, 1.5-27.9; p=0.012).
Conclusions: Short-axis RV: LV EDA correlates well with RV volume as measured by CMR. This new measure can be used to predict optimal timing for CMR in anticipation of surgical repair.
Poster Hall, Hall C
Saturday, March 18, 2017, 3:45 p.m.-4:30 p.m.
Session Title: Congenital Heart Disease: New Diagnostic Approaches in Congenital Heart Disease
Abstract Category: 10. Congenital Heart Disease: Pediatric
Presentation Number: 1231-018
- 2017 American College of Cardiology Foundation