TY - JOUR T1 - The authors’ reply to the letter from Kerkhof <em>et al</em> entitled ‘The importance of (measuring) the end-systolic volume index in predicting survival’ JF - Heart JO - Heart SP - 1 LP - 1 DO - 10.1136/heartjnl-2017-312346 VL - 104 IS - 2 AU - David L Prior AU - Susanna R Stevens AU - Hussain R Al-Khalidi AU - Thomas A Holly AU - Daniel S Berman A2 - , Y1 - 2018/01/01 UR - http://heart.bmj.com/content/104/2/1.2.abstract N2 - We thank Kerkhof et al 1 for their interest in our paper2 and are pleased they agree with our conclusion that accurate determination of end-systolic volume index (ESVI) is important in patients with reduced LVEF. Table 3 and figure 2 show the entire range of ESVI values. The scatter plot of the individual data points (figure 2) and summary statistics presented in table 3 reveal the data are highly skewed to the right such that most values fall at the lower end of … ER -