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Table 3 Hemodynamic parameters of the study population as a whole, group (dIVC <18%) and group (dIVC ≥18%)

From: The gray zone of the qualitative assessment of respiratory changes in inferior vena cava diameter in ICU patients

  All patients (n= 97) dIVC <18% (n= 71) dIVC ≥18% (n= 26) P value
SBP (mm Hg) 120 ± 23 123 ± 23 114 ± 20 0.1
MBP (mm Hg) 82 ± 16 84 ± 17 77 ± 12 0.04
DBP (mmHg) 63 ± 15 65 ± 16 57 ± 12 0.03
HR (per min) 80 ± 16 81 ± 16 77 ± 18 0.4
Max IVC diameter (cm) 1.8 ± 0.4 1.9 ± 0.4 1.60 ± 0.4 <0.01
Min IVC diameter (cm) 1.6 ± 0.4 1.8 ± 0.4 1.2 ± 0.4 <0.01
PPvariation (%) 13 ± 7 (n = 82) 11 ± 5 (n = 61) 18 ± 9 (n = 21) <0.01
  1. dIVC, inferior vena cava distensibility index; SBP, systolic blood pressure; DBP. diastolic blood pressure; MAP, mean arterial pressure; HR, heart rate; PPvariation, respiratory variation of pulse pressure.