Table 4.
Four Factors Suggestive of Wild-Type Transthyretin Cardiac Amyloidosis (ATTRwt-CA) in the 16 Patients Undergoing 99 mTc-Pyrophosphate Scintigraphy
| Patient no. |
99 mTc-PYP scintigraphy grade |
hs-cTnT ≥0.0308 ng/mL |
Low voltage in limb leads |
Pseudo-infarction pattern |
Apical sparing |
No. positive findings |
|---|---|---|---|---|---|---|
| 1 | 2 | + | − | − | − | 1 |
| 2 | 2 | + | + | + | − | 3 |
| 3 | 2 | − | − | + | + | 2 |
| 4 | 1 | − | − | + | − | 1 |
| 5 | 1 | − | − | + | + | 2 |
| 6 | 0 | + | − | − | − | 1 |
| 7 | 0 | − | − | − | − | 0 |
| 8 | 0 | − | − | − | − | 0 |
| 9 | 0 | − | − | − | − | 0 |
| 10 | 0 | − | − | − | − | 0 |
| 11 | 0 | − | − | − | − | 0 |
| 12 | 0 | + | − | − | − | 1 |
| 13 | 0 | − | − | − | − | 0 |
| 14 | 0 | NA | − | − | NA | 0 |
| 15 | 0 | + | − | − | − | 1 |
| 16 | 0 | − | − | − | − | 0 |
99 mTc-PYP, 99 mTc-labeled pyrophosphate; hs-cTnT, high sensitivity cardiac troponin T; NA, not available.