Table 1: Grouped analysis of the main studied parameters during changes in arterial blood pressure.

Parameter

Hypertension

(n = 33)

P value

Normotension

(n = 40)

P value

Hypotension

(n = 38)

HR

(bpm)

64

[59-72]

0.5605

67

 [60-73]

0.3977

63

[55-76]

SAP

(mmHg)

156

[149-168]

< 0.0001

114

[104-121]

< 0.0001

82

[78-86]

MAP

(mmHg)

111

[106-123]

< 0.0001

82

[78-88]

< 0.0001

61

[56-64]

DAP

(mmHg)

91

[83-100]

< 0.0001

68

[61-75]

< 0.0001

49

[44-54]

PP

(mmHg)

65

[55-76]

< 0.0001

44

[38-51]

< 0.0001

30

[27-39]

PPG amplitude

(%)

25

[24-41]

0.0001

40

[30-50]

0.0205

50

[40-63]

RI

0.79

[0.69-1.15]

0.3367

0.73

[0.69-0.81]

0.6104

0.73

[0.65-0.82]

Vm

(cm/s)

18

[10-26]

0.0043

20

[14-25]

0.0238

21

[15-26]

Temp

(ºC)

34.0

[33.8-34.9]

0.7805

34.0

[33.8-35.0]

0.8105

34.0

[33.9-34.9]

Data belong to all patients pooled. HR: Heart rate; SAP: Systolic arterial pressure; MAP: Mean arterial pressure; DAP: Diastolic arterial pressure; PP: Pulse pressure; PPG: Photoplethysmography; IR: Doppler resistive index; Vm: Doppler wave mean velocity; and Temp: Hand temperature; P value: Wilcoxon rank sum test compared with normotension. Data is presented as median and 1st-3rd quartiles.