Table 4.
HR | BP | Scan | Regional and global function | ||
---|---|---|---|---|---|
Normal response | Ischemic response | ||||
Dobutamine | Increase | Increase systolic/diastolic BP | Difficult | Increase function and velocity of contraction compared with rest and usually with low dose; Greater decrease in ESV, marked increase in EF | Decrease function and velocity of contraction compared with low dose; may be less compared with rest; Often same as normal response, rarely, ischemia produces decreased EF; cavity dilatation rarely occurs |
Vasodilator: Dipyridamole/Adenosine | Reduction | Decrease systolic/diastolic BP | Easier | Increase function compared with rest; Decrease in ESV, increase in EF | Decreased function compared with rest; Often same as normal response; occasionally, ischemia produces decreased EF; cavity dilatation rarely occours. |