Fig. 1

Top line: data from a patient after adrenal tumor surgery with a history of hypertension (SBP > 180 mmHg) for more than 2 years. Bottom line: data from a patient with coronary heart disease. Coronary angiography demonstrated stenosis in the middle left circumflex branch (80%) and in the proximal right coronary artery (70%). (A, B in the top line) The patient's GLS value was -14% with SBP of 140 mmHg at the time of the study. The GWI was 1,603 mmHg%. (A, B in the bottom line) This patient exhibited a higher GLS value of -19% and a lower GWI (1,346 mmHg%) at the same SBP level than the previously mentioned subject. Figure Cs and Ds explained these results. (C, D in the top line) The peak LS value of the middle segment of the lateral wall was -15% and the MWI of the segment was 1,846 mmHg%. (C, D in the bottom line) Considerably lower MWI was noted in the basal segment of the lateral wall (853 mmHg%) at the same peak LS and at the same SBP level. (C in the bottom line) It demonstrated that the strain curve with apparent transient hypokinisis, akinesis and even paradoxical movement in mid-systole (white oval) led to much lower MWI. However, this information could not be reflected by the LS value. SBP, systolic blood pressure; GLS, global longitudinal strain; GWI, global work index; LS, longitudinal strain; MWI, myocardial work index