Table 4.

Dialysis sessions with hypotension (n = 22)a

ParameterStart-20 min-10 minHypotension+10 min
aData are presented as mean ± SEM. Data are synchronized to the time of hypotension, which occurred on average 147 ± 29 min after the start of dialysis. Start, start of dialysis; t½, halfway between start of dialysis and hypotension; -20, -10, and +10, 20 and 10 min before and 10 min after hypotension occurred; LF/HF ratio, ratio of low-frequency and high-frequency power of heart rate variability.
bP < 0.002 versus baseline.
cP < 0.002 versus -10 min.
dP < 0.02 versus baseline.
Systolic BP (mmHg)147 ± 6148 ± 6134 ± 6126 ± 775 ± 3b,c108 ± 6
Diastolic BP (mmHg)71 ± 373 ± 370 ± 267 ± 246 ± 2b,c58 ± 4
Pulse pressure (mmHg)76 ± 574 ± 564 ± 559 ± 529 ± 3b,c50 ± 4
Heart rate (bpm)78 ± 280 ± 284 ± 290 ± 2d69 ± 3b,c76 ± 3
Stroke volume (ml)55 ± 350 ± 247 ± 246 ± 2d48 ± 2b,c49 ± 2
Cardiac output (L/min)4.2 ± 0.24.0 ± 0.13.9 ± 0.14.0 ± 0.23.5 ± 0.2b,c3.7 ± 0.2
Forearm resistance (ml/min per 100 ml)23.9 ± 1.929.4 ± 2.628.6 ± 2.931.9 ± 4.519.2 ± 1.8c25.1 ± 1.9
LF/HF ratio0.99 ± 0.21.64 ± 0.31.39 ± 0.32.93 ± 0.5d0.73 ± 0.1b,c2.36 ± 0.6