Table 1

Summary of longitudinal deformation characteristics at rest and during dobutamine stress for each ischaemic substrate

 RestDobutamine stress
Low dosePeak dose
PSSRSSPSSPSSRSSPSSPSSRSSPSS
ControlNN0*↗↗0↗↗/↘0
Acute ischaemia↓↓↑↘↘↗↘↘↘↘↗↗
Stunning↓↓↑↗↗↘↗↗/↘0
Chronic ischaemia/hibernation↓↓↑↗↗↗↘↘↗↗
Non-transmural infarction↓↓↓↓↑↘↘↗↘↘↘↘↗↗
Transmural infarction000→→→→→→

  • Adapted from Bijnens et al.7

  • *May be present in up to two-fifths of the normal population at rest but if present is of low magnitude.

  • 0 Absent; ↓ Reduced; ↑ Increased; ↗ Increased vs rest; ↘ Decreased vs rest;/↘ Initial increase followed by decrease; ↗↗ Further increasing; ↘↘ Further decreasing.

  • PSS, post-systolic shortening; PSSR, peak systolic strain rate, SS, systolic strain.