Table 2 Table of results for all variables measured pre- and post-venesection
Measurement (units) | n | # increased following venesection | # decreased following venesection | # no change following venesection | pre-venesection mean | post-venesection mean | Average Change (95% CI) | Inverse Coefficient of Variation (1/CV) (95% CI) | Log-odds (95% CI) |
|---|---|---|---|---|---|---|---|---|---|
Heart Rate (bpm) | 40 | 7 | 31 | 2 | 77.30 | 71.47 | −5.83 (−7.72, −3.88) | − 0.92 (− 1.37, − 0.59) | − 1.39 (− 2.35, − 0.73) |
Diastolic blood pressure (mmHg) | 40 | 11 | 27 | 2 | 74.83 | 71.30 | −3.52 (− 5.85, −1.15) | − 0.46 (− 0.90, − 0.14) | − 0.85 (− 1.64, − 0.25) |
Systolic blood pressure (mmHg) | 40 | 6 | 32 | 2 | 136.25 | 125.38 | − 10.88 (− 14.57, − 7.35) | − 0.93 (− 1.28, − 0.67) | − 1.55 (− 2.51, − 0.85) |
Mean Arterial Pressure (mmHg) | 40 | 5 | 34 | 1 | 97.78 | 91.33 | −6.45 (−8.57, −4.22) | − 0.91 (− 1.50, − 0.52) | − 1.84 (− 2.94, − 1.10) |
IVCe (cm) | 29 | 4 | 25 | 0 | 1.76 | 1.49 | − 0.26 (− 0.37, − 0.16) | − 0.87 (− 1.26, − 0.57) | −1.83 (− 3.33, − 0.97) |
IVCi (cm) | 29 | 2 | 22 | 5 | 0.94 | 0.69 | − 0.25 (− 0.37, − 0.14) | −0.80 (− 1.18, − 0.57) | −1.70 (− 2.91, − 0.97) |
IVCCI % | 29 | 16 | 9 | 4 | 48 | 59 | 10 (3.9, 19) | 0.51 (0.30, 0.73) | 0.49 (−0.21, 1.24) |
Tcol (seconds) | 22 | 2 | 20 | 0 | 2.02 | 1.267 | −0.75 (−1.15, − 0.39) | −0.78 (− 1.23, − 0.47) | −2.30 (-Inf, − 1.22) |
Carotid artery blood flow (ml/min) | 39 | 21 | 18 | 0 | 720.1 | 731.8 | 11.4 (−29.6, 52.1) | 0.09 (−0.22, 0.44) | 0.15 (−0.47, 0.81) |
r-r interval (seconds) | 40 | 12 | 18 | 10 | 0.90 | 0.89 | −0.0092 (− 0.027, 0.0090) | −0.16 (− 0.49, 0.15) | −0.30 (− 0.85, 0.25) |
Flow time (seconds) | 40 | 12 | 19 | 9 | 0.31 | 0.31 | −0.0048 (− 0.011, 0.0018) | −0.22 (− 0.54, 0.09) | −0.35 (− 0.97, 0.20) |
Corrected flow time (seconds) | 40 | 18 | 21 | 1 | 0.33 | 0.33 | −0.0040 (− 0.012, 0.0037) | −0.16 (− 0.48, 0.15) | −0.15 (− 0.79, 0.46) |
ECHO VTI (cm) | 38 | 8 | 30 | 0 | 21.87 | 20.34 | −1.47 (−2.11, −0.85) | −0.73 (− 1.09, − 0.45) | −1.32 (− 2.46, − 0.65) |
ECHO CO (L/min) | 38 | 3 | 35 | 0 | 6.28 | 5.39 | − 0.86 (−1.12, − 0.61) | − 1.03 (− 1.53, − 0.74) | −2.46 (-Inf, − 1.49) |
ECHO SV (ml) | 38 | 8 | 30 | 0 | 80.00 | 74.02 | −5.24 (− 7.65, −2.88) | −0.70 (− 1.06, − 0.40) | − 1.32 (− 2.46, − 0.65) |
USCOM 1A CO (L/min) | 37 | 14 | 22 | 1 | 4.35 | 4.13 | − 0.18 (− 0.45, 0.10) | −0.21 (− 0.62, 0.11) | −0.44 (− 1.14, 0.22) |
USCOM 1A SV (ml) | 37 | 11 | 25 | 1 | 64.87 | 60.66 | −3.19 (− 6.57, 0.57) | −0.28 (− 0.74, 0.05) | −0.80 (− 1.55, − 0.16) |
LiDCOrapidv2 with CNAP™ CO (L/min) | 37 | 16 | 21 | 0 | 7.29 | 6.49 | −0.80 (− 1.41, − 0.22) | −0.42 (− 0.72, − 0.13) | −0.27 (− 0.99, 0.38) |
LiDCOrapidv2 with CNAP™ PPV % | 36 | 22 | 12 | 2 | 13.70 | 16.47 | 3.00 (0.86, 5.28) | 0.43 (0.14, 0.74) | 0.57 (−0.06, 1.34) |
LiDCOrapidv2 with CNAP™ SV (ml) | 37 | 14 | 21 | 2 | 101.22 | 90.62 | −10.59 (− 19.54, − 2.16) | −0.39 (− 0.70, − 0.09) | −0.38 (− 1.06, 0.22) |
LiDCOrapidv2 with CNAP™ SVV % | 36 | 18 | 13 | 5 | 15.95 | 17.89 | 2.08 (−0.17, 4.56) | 0.28 (−0.03, 0.57) | 0.28 (− 0.34, 0.96) |