Research Article
Safety and Feasibility Using a Fluid-Filled Wire to Avoid Hydrostatic Errors in Physiological Intracoronary Measurements
Table 2
Height measurements and correction of sensor-tipped wire measurements (n = 19).
| Vessel | Height difference ± x (cm) | Hydrostatic error (0.77 mmHg/cm) (mmHg) | Pa at rest sensor-tipped (mmHg) | Pd at rest sensor-tipped (mmHg) | Pd at rest sensor-tipped after hydro correction (mmHg) | Pa at hyperemia sensor-tipped (mmHg) | Pd at hyperemia sensor-tipped (mmHg) | Pd at hyperemia sensor-tipped after hydro correction (mmHg) |
| LAD | −12.4 | −9.5 | 95 | 89 | 98.5 | 97 | 86 | 95.5 | LAD | −5.8 | −4.5 | 98 | 89 | 93.5 | 84 | 62 | 66.5 | LAD | −5.5 | −4.2 | 83 | 76 | 80.2 | 80 | 68 | 72.2 | LAD | −5.2 | −4.0 | 124 | 111 | 115.0 | 120 | 92 | 96.0 | LAD | −4.9 | −3.8 | 87 | 73 | 76.8 | 97 | 85 | 88.8 | LAD | −4.3 | −3.3 | 90 | 86 | 89.3 | 89 | 82 | 85.3 | LAD | −4.2 | −3.2 | 85 | 79 | 82.2 | 96 | 74 | 77.2 | LAD | −4.0 | −3.1 | 99 | 93 | 96.1 | 82 | 71 | 74.1 | LAD | −4.0 | −3.1 | 76 | 71 | 74.1 | 59 | 50 | 53.1 | LAD | −3.8 | −2.9 | 83 | 70 | 72.9 | 73 | 61 | 63.9 | LAD | −3.7 | −2.8 | 100 | 94 | 96.8 | 94 | 84 | 86.8 | LAD | −3.6 | −2.8 | 86 | 80 | 82.8 | 96 | 82 | 84.8 | LAD | −2.4 | −1.8 | 89 | 83 | 84.8 | 89 | 84 | 85.8 | LAD | −1.2 | −0.9 | 73 | 70 | 70.9 | 68 | 65 | 65.9 | RCA | 2.1 | 1.6 | 113 | 105 | 103.4 | 66 | 52 | 50.4 | LCX | 2.3 | 1.8 | 82 | 82 | 80.2 | 86 | 76 | 74.2 | RCA | 3.0 | 2.3 | 85 | 78 | 75.7 | 78 | 58 | 55.7 | RCA | 3.7 | 2.8 | 86 | 87 | 84.2 | 94 | 86 | 83.2 | LCX | 3.9 | 3.0 | 86 | 83 | 80.0 | 86 | 66 | 63.0 |
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