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Table 5 Intra- and inter-observer measurement variability of the echocardiographic variables

From: Influence of heart rate on right ventricular function assessed by right heart catheterization and echocardiography in healthy anesthetized dogs

Variables Intra-observer Inter-observer
CV ICC CV ICC
RVEDA index 2.2 0.97* 6.1 0.91*
RVESA index 4.4 0.95* 7.4 0.83*
RV FACn 5.0 0.91* 9.1 0.85*
TAPSEn 1.8 0.99* 3.5 0.99*
RV s' 1.3 0.99* 2.2 0.99*
RV-SL3seg 4.1 0.93* 7.2 0.88*
RV-SrL3seg 5.9 0.89* 9.5 0.91*
RV-SL6seg 5.2 0.98* 7.6 0.96*
RV-SrL6seg 5.7 0.93* 6.9 0.87*
  1. 3seg right ventricular free wall analysis, 6seg right ventricular global analysis, CV coefficient of variation, ICC inter- or intra-class correlation coefficients, RV FACn right ventricular fractional area change normalized by body weight, RV s' peak systolic myocardial velocity of the lateral tricuspid annulus, RVEDA index end-diastolic right ventricular area normalized by body weight, RVESA index end-systolic right ventricular area normalized by body weight, RV-SL right ventricular strain, RV-SrL systolic right ventricular strain rate, TAPSEn tricuspid annular plane systolic excursion normalized by body weight
  2. * Within a row, ICC values were considered significant (p < 0.050)