Table 1 Cohort characteristics, stress procedure and scan findings in relation to elevated stress lung heart ratio (sLHR).
Normal sLHR (n = 649) | Elevated sLHR (n = 69) | P | |
|---|---|---|---|
Clinical variables | |||
Age (years) | 61 ± 11 | 59 ± 12 | >0.2 |
Sex (male) | 325 (50%) | 55 (80%) | <0.0001 |
Previous AMI | 154 (24%) | 32 (46%) | <0.0001 |
Previous revascularization | 93 (14%) | 19 (28%) | 0.004 |
Diabetes | 74 (11%) | 16 (23%) | 0.005 |
Stress Modality | |||
Exercise only | 505 (78%) | 51 (74%) | >0.2 |
Dipyridimole a | 144 (22%) | 18 (26%) | >0.2 |
Perfusion | |||
SSS | 6 ± 8 | 16 ± 12 | <0.0001 |
SRS | 2 ± 5 | 8 ± 9 | <0.0001 |
SDS | 3 ± 4 | 7 ± 5 | <0.0001 |
LV Volume | |||
Stress (ml) | 72 ± 43 | 141 ± 100 | <0.0001 |
Rest (ml) | 70 ± 40 | 133 ± 96 | <0.0001 |
TID | 1.02 ± 0.13 | 1.06 ± 0.16 | 0.02 |