Table 3.
Autonomic parameters evaluated by spectral analysis of patients on the waiting list for lung transplant stratified by Lung Allocation Score (LAS). Comparisons between patients with LAS≤ and > than the median (a) and between patients with LAS≤ and > than the 75th percentile (b).
| (a) | (b) | |||||
|---|---|---|---|---|---|---|
| LAS ≤ Median n = 25 |
LAS > Median n = 24 |
p | LAS ≤ 75th p. n = 37 |
LAS > 75th p. n = 12 |
p | |
| Heart rate, mean (SD) bpm | 87 (± 18) | 87 (± 15) | 0.97 | 86 (± 17) | 88 (± 12) | 0.79 |
| Spectral analysis, median (IQR) | ||||||
| Total power, ms 2 | 597 (232–1091) | 331 (150–928) | 0.43 | 551 (206–1080) | 439 (164–841) | 0.72 |
| LFnu | 75 (50–85) | 55 (28–69) | 0.04 | 68 (52–85) | 41 (22–62) | 0.005 |
| HFnu | 14 (7–34) | 25 (8–37) | 0.36 | 14 (7–36) | 25 (13–46) | 0.37 |
| LF/HF | 5.98 (1.53–10.89) | 2.24 (1.09–4.29) | 0.17 | 4.13 (1.56–10.92) | 1.70 (0.63–3.47) | 0.04 |
| RR-RESP HFk 2 | 0.73 (0.35–0.89) | 0.90 (0.63–0.94) | 0.11 | 0.80 (0.41–0.92) | 0.91 (0.64–0.94) | 0.35 |
| RESP HF, Hz | 0.35 (0.25–0.44) | 0.34 (0.28–0.37) | 0.67 | 0.35 (0.25–0.40) | 0.34 (0.29–0.36) | 0.91 |
n, number; p., percentile; IQR 25–75, interquartile range; bpm, beats per minute; ms2, milliseconds2; LF, low frequency; HF, high frequency; nu, normalized; LF/HF, sympatho–vagal balance; RR, R-R interval; RESP, respiratory; K2, coherence; Hz, Hertz.