Skip to main content

Advertisement

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).