Table 2 Feasibility and results (overall and for individual coronary artery territories) for segmental wall assessment with convention and advanced echocardiography as well as myocardial contrast perfusion echocardiography
Parameter | Feasibility Patients n (%) | Feasibility n/total segments (%) | Value | No coronary artery disease | Significant coronary artery disease | p value | ||
|---|---|---|---|---|---|---|---|---|
2D segmental thickening assessment (wall motion score index) | LAD | 36 (90%) | 329/360 (91%) | 2 (1.5–2.5) | 2 (1.4–2.6) | 1.9 (1.5–2.6) | 0.75 | |
LCx | 34 (85%) | 142/160 (89%) | 2 (1–2) | 2 (1–2) | 2 (1–2.5) | 0.75 | ||
RCA | 40 (100%) | 233/240 (97%) | 2 (1–2) | 2 (1–2) | 2 (1–2.1) | 0.98 | ||
Longitudinal strain analysis by speckle tracking echocardiography (%) | LAD | 25 (63%) | 263/360 (73%) | − 6.25% (− 10 to – 2) | − 5.4% (− 10 to − 1) | − 7% (− 18 to − 5) | 0.29 | |
LCx | 34 (85%) | 137/160 (86%) | − 8.1% (6) | − 7.9% (6) | − 9.3 (5) | 0.59 | ||
RCA | 36 (90%) | 210/240 (88%) | − 9.2% (5) | −9% (− 11 to − 6) | − 7.5% (− 16 to − 7) | 0.9 | ||
Myocardial contrast perfusion echocardiography | Subjective assessment (n) | Overall | – | 400/640 (62.5%) | 4 | 1 | 3 | 0.01 |
LAD | 21 (53%) | 260/360 (72%) | 4 | 1 | 3 | 0.01 | ||
LCx | 8 (20%) | 58/160 (36%) | 2 | 0 | 2 | 0.02 | ||
RCA | 21 (53%) | 142/240 (59%) | 2 | 0 | 2 | 0.02 | ||
Quantitative assessment (dB/s) | Overall | – | 423/640 (66%) | 3.2 (3–4) | 3.3 (3–4) | 2.6 (1–3) | 0.03 | |
LAD | 26 (65%) | 268/360 (74%) | 3.3 (3–4) | 3.3 (3–4) | 2.5 (1.4–3) | 0.04 | ||
LCx | 13 (33%) | 72/160 (45%) | 2.9 (1) | 3.1 (3–4) | 1.6 (1–3) | 0.02 | ||
RCA | 23 (58%) | 154/240 (64%) | 3.0 (1) | 3.1 (1) | 2.5 (1) | 0.28 | ||