Table 3.
Baroreflex sensitivity and frequency indices for responder and non-responder patients at time points T1 and T2
| Responder | Non-responder | |||||
| T1 | T2 | Delta | T1 | T2 | Delta | |
| SAP | ||||||
| LF power (a.u.) | 121.8 (90, 173.4) | 246.3 (108.5, 278.4) | 51.5 (−2.2, 133) | 114.4 (60.6, 257.3) | 105.6 (81.3, 210) | 47.9 (−68.3, 62.7) |
| TP (a.u. ) | 525.7 (509, 626) | 534.6 (507.9, 549.9) | −0.9 (−72, 16) | 531.9 (520.5, 544) | 525 (498.7, 544.9) | −2.7 (−33.5, 31.6) |
| DAP | ||||||
| LF power (a.u. ) | 148.6 (94.7, 189) | 202 (156.1, 257.1) | 57.3 (4.3, 117.4)§ | 105.7 (80.5, 229.4) | 91.9 (74.8, 104.8)* | −13.8 (−91.5, 20.2)° |
| TP (a.u. ) | 521 (509.4, 549.5) | 526.1 (513.9, 546.8) | −1.5 (−24.1, 24.2) | 538.4 (516.2, 559.8) | 510.3 (446, 557.3) | −45.8 (−70.5, −3.3) |
| MAP | ||||||
| LF power (a.u. ) | 130.3 (79, 222.6) | 243.2 (106.5, 327.5) | 44.4 (−29.9, 245.3) | 119.9 (52.3, 225.1) | 99.3 (82, 223.2) | 44.3 (−86.5, 74.7) |
| TP (a.u. ) | 522.9 (502, 578.2) | 535.6 (525, 555.7) | 7 (−65.8, 25.4) | 546.9 (501.5, 557) | 533.2 (488, 558.5) | 11.5 (−67.3, 44.1) |
| HP | ||||||
| LF power (a.u. ) | 209 (127, 297.7) | 260.8 (185.6, 370.2) | 55.3 (21.9, 147.2) | 143.5 (113, 168.1) | 188 (131.3, 309.2) | 44.6 (6.7, 102.5) |
| TP (a.u. ) | 519.6 (511, 533.4) | 528.4 (514.7, 541.6) | 8.6 (−9, 36.2) | 529.6 (510.4, 546.9) | 536.6 (500.6, 545) | 24 (−60.8, 37.8) |
| BRS | ||||||
| Feedback (ms/mmHg) | 2.2 (1.4, 3.3) | 3.2 (2.1, 7.5) | 0.9 (−0, 3) | 1.3 (0.5, 1.7) | 5.2 (2.4, 8.1) | 3.5 (1.3, 6.1)§ |
| Feedforward (mmHg/ms) | 0.1 (0.05, 0.19) | 0.08 (0.04, 0.15) | −0.05 (−0.08, 0.05) | 0.15 (0.08, 0.3) | 0.06 (0.06, 0.1) | −0.04 (−0.29, 0.03) |
Values ad reported as median (25th, 75th) percentile.
BRS, baroreflex sensitivity; DAP, diastolic arterial pressure; HP, heart period; LF, low-frequency power; MAP, mean arterial pressure; SAP, systolic arterial pressure; TP, total power.
Comparisons between R and NR: *P < 0.05 (Mann–Whitney U test).
Comparisons between T1 and T2: §P < 0.05 (Wilcoxon signed-rank test).
Comparison between delta R and delta NR: °P < 0.05 (Mann–Whitney U test).