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Table 3 Mean values of LVCI, RVCI, CImax and EtCO2 in separate measurements

From: Correlation between end-tidal carbon dioxide and the degree of compression of heart cavities measured by transthoracic echocardiography during cardiopulmonary resuscitation for out-of-hospital cardiac arrest

 1st measurement2nd measurement3rd measurement
Number of patients (n)181816
Time from the beginning of ALS (s ± SD)248.5 ± 85.2529.5 ± 166.7868.5 ± 232.5
EtCO2 (mmHg ± SD)22.9 ± 4.123.6 ± 5.022.4 ± 7.3
LVCI (% ± SD)21.8 ± 15.519.7 ± 13.320.3 ± 13.0
RVCI (% ± SD)33.0 ± 21.236.8 ± 21.533.4 ± 23.3
CImax (% ± SD)37.0 ± 19.640.0 ± 19.734.7 ± 22.0
  1. ALS advanced life support, EtCO2 end-tidal carbon dioxide level, LVCI left ventricular compression index, RVCI right ventricular compression index, CImax maximal compression index