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Table 2 Hemodynamic parameters: blood pressure (systolic (s) and diastolic (d)), pulse, arterial oxygen saturation as well as number of days of hospitalization in particular (PVB, TEA) groups during 3 days after surgery

From: Assessment of postoperative pain management and comparison of effectiveness of pain relief treatment involving paravertebral block and thoracic epidural analgesia in patients undergoing posterolateral thoracotomy

  Group Mann-Whitney U test P
PVB TEA Total
Mean N Standard deviation Mean N Standard deviation Mean N Standard deviation Minimum Maximum
a blood pressure-s- (every 4 h) 1st day 122.10 30 11.25 119.13 30 13.50 120.62 60 12.41 98.00 148.00 360.50 .186
b blood pressure-d- (every 4 h) 1st day 69.30 30 8.89 66.83 30 7.64 68.07 60 8.31 53.00 87.00 369.50 .233
a blood pressure-s- (every 4 h)
2nd day
122.37 30 13.31 120.00 30 16.43 121.18 60 14.87 88.00 156.00 386.00 .344
b blood pressure-d- (every 4 h)
2nd day
70.07 30 10.79 67.47 30 7.64 68.77 60 9.36 48.00 87.00 386.00 .344
a blood pressure-s- (every 4 h)
3rd day
129.17 24 15.96 123.91 23 12.92 126.60 47 14.64 101.00 160.00 242.00 .469
b blood pressure-d- (every 4 h)
3rd day
72.50 24 10.16 72.09 23 8.81 72.30 47 9.42 55.00 89.00 273.50 .957
pulse 1st day 81.80 30 10.53 79.93 30 10.76 80.87 60 10.59 56.00 104.00 408.00 .534
pulse 2nd day 84.07 30 8.63 84.56 30 10.07 84.31 60 9.30 64.00 105.00 443.50 .923
pulse 3rd day 84.04 24 9.93 85.09 23 9.83 84.55 47 9.79 66.00 108.00 262.00 .765
SaO2 1st day 97.62 29 1.99 97.01 30 1.62 97.31 59 1.82 92.00 100.00 328.50 .102
SaO2 2nd day 95.18 17 2.30 95.20 20 2.50 95.19 37 2.38 90.00 100.00 160.00 .758
SaO2 3nd day 95.71 7 0.95 95.13 8 2.85 95.40 15 2.13 90.00 99.00 23.50 .595
number of days of hospitalization after surgery 7.47 30 3.70 6.30 30 1.95 6.88 60 2.99 3.00 23.00 354.00 .150