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