Table 4.
Myocardial mechanical and hemodynamic characteristics in 16 patients with pulsus alternans
| Parameters | LVOT-VTI (strong beat) (cm) | LVOT-VTI (weak beat) (cm) | ∆LVOT-VTI (%) | GLS (%) | PSD (ms) | Bilateral carotid artery alternans | Right ventricular alternans |
|---|---|---|---|---|---|---|---|
| Case 1 | 19.5 | 9.5 | 51 | −9.6 | 95.0 | Yes | None |
| Case 2 | 23.1 | 12.5 | 46 | −8.2 | 57.0 | NA | None |
| Case 3 | 27.3 | 22.1 | 19 | −6.6 | 73.0 | NA | None |
| Case 4 | 11.3 | 6.8 | 40 | −1.2 | 81.0 | Yes | None |
| Case 5 | 24.8 | 16.7 | 33 | −7.0 | 79.8 | NA | None |
| Case 6 | 15.8 | 10.0 | 37 | −6.6 | 64.8 | Yes | None |
| Case 7 | 14.0 | 8.4 | 40 | −4.1 | 117.5 | Yes | None |
| Case 8 | 14.2 | 10.2 | 28 | −5.2 | 47.0 | Yes | None |
| Case 9 | 12.8 | 9.5 | 26 | −3.4 | 90.4 | Yes | Yes |
| Case 10 | 15.1 | 10.7 | 29 | −6.7 | 68.1 | Yes | None |
| Case 11 | 29.2 | 14.1 | 52 | −8.1 | 100.5 | Yes | Yes |
| Case 12 | 24.6 | 17.3 | 30 | −8.1 | 76.3 | Yes | None |
| Case 13 | 26.4 | 14.5 | 45 | −10.4 | 48.0 | NA | None |
| Case 14 | 15.7 | 8.7 | 45 | NA | NA | Yes | None |
| Case 15 | 15.4 | 11.6 | 25 | NA | NA | Yes | None |
| Case 16 | 11.7 | 8.6 | 27 | −3.8 | 71.5 | Yes | Yes |
LVOT-VTI left ventricular outflow velocity-time integral, ∆LVOT-VTI variation rate between strong and weak beats of LVOT-VTI, GLS global longitudinal strain, PSD peak time standard deviation, NA not available