Phenylephrine | Angiotensin II | p value | |
---|---|---|---|
Blood pressure (mm Hg) | 110 (8) | 107 (4) | NS |
RR interval (ms) | 1364 (201) | 1019 (159) | < 0.001 |
SDNN (ms) | 79 (29) | 114 (66) | NS |
IQDNN (ms) | 138 (119) | 162 (145) | NS |
IQDSD (ms) | 153 (93) | 152 (153) | NS |
RMSSD (ms) | 89 (50) | 122 (114) | NS |
pNN50 (%) | 54 (23) | 57 (16) | NS |
Total power (ms2) | 11 674 (13 800) | 17 902 (20 511) | NS |
LF power-abs (ms2) | 685 (456) | 2326 (2229) | 0.008 |
LF power (nu) | 0.17 (0.13) | 0.23 (0.11) | NS |
HF power-abs (ms2) | 5502 (6959) | 8673 (14 167) | NS |
HF power (nu) | 0.56 (0.26) | 0.60 (0.19) | NS |
Values are mean (SD).
abs, absolute units; HF, high frequency; IQDNN, interquartile differences in frequency distributions of the total number of RR intervals; IQDSD, interquartile differences in frequency distributions of successive RR interval differences ; LF, low frequency; pNN50, percentage of successive RR interval differences exceeding 50 ms; RMSSD, root mean square of successive RR interval differences; SDNN, standard deviation of RR interval values.