Skip to main content

Table 2 Cardiac and pressure data for the two management groups

From: Cardiac output in idiopathic normal pressure hydrocephalus: association with arterial blood pressure and intracranial pressure wave amplitudes and outcome of shunt surgery

 

Management groups

 
 

Group A (elevated MWAICP)

Group B (low MWAICP)

Significance

Duration of recording

   

   Accepted 6-s time windows

7,329 (1,022 - 12,388)

7,416 (3,370 - 9,143)

ns

Cardiac parameters

   

   CO (l/min)

5.6 (3.6 - 9.6)

5.5 (3.7 - 6.4)

ns

   SV (ml/beat)

81.1 (48.4 - 134.5)

82.1 (52.9 - 103.1)

ns

   HR (beats/min)

68.6 (58.8 - 89.7)

67.1 (62.3 - 87.9)

ns

   DO2 (ml ∙ min ∙ m2)l)

1,006 (593 - 2,104)

923 (759 - 1,097)

ns

   SVR (dyne ∙ s∙ cm5)

1,448 (508 - 2,157)

1,426 (997 - 2,144)

ns

ABP parameters

   

   Mean ABP (mmHg)

90.7 (72.5 - 112.3)

96.2 (78.0 - 108.1)

ns

   Mean ABP wave amplitude (MWAABP; mmHg)

68.6 (52.0 - 110.0)

60.9 (42.1 - 77.6)

ns

ICP parameters

   

   Mean ICP (mmHg)

6.4 (2.3 - 11.9)

4.7 (2.1 - 10.8)

ns

   Mean ICP wave amplitude (MWAICP; mmHg)

5.6 (4.0 - 10.2)

3.4 (2.8 - 4.0)

c

   Percentage mean ICP wave amplitude (MWAICP) ≥5 mmHg

68 (11 - 100)

2 (1 - 7)

c

CPP

   

   Mean CPP (mmHg)

87.2 (62.7 - 112.1)

92.9 (75.5 - 107.7)

ns

Correlation values

   

   CO/MWAABP

0.37 (0.02 - 0.80)

0.55 (0.09 - 0.87)

ns

   CO/MWAICP

-0.06 (-0.24 - 0.21)

0.07 (-0.12 - 0.39)

a

   MWAABP/MWAICP

0.05 (-0.29 - 0.32)

0.09 (-0.15 - 0.35)

ns

  1. Management groups were defined according to published criteria [11]. Significance: aP < 0.05; cP < 0.001 (one-way ANOVA).