Variable | No cardiac arrest within 72 hours (n= 882) | Cardiac arrest within 72 hours (n= 43) | P valuea | No death (n= 839) | Death (n= 86) | P valuea |
---|---|---|---|---|---|---|
Age | 61 (16) | 66 (16) | 0.047 | 61 (16) | 69 (16) | < 0.001 |
Vital signs | Â | Â | Â | Â | Â | Â |
   Glasgow Coma Scale | 15 (15 to 15) | 15 (11 to 15) | 0.002 | 15 (15 to 15) | 15 (10 to 15) | < 0.001 |
   Temperature (°C) | 37 (1) | 37 (1) | 0.118 | 37 (1) | 37 (1) | 0.280 |
   Pulse rate (beats/minute) | 96 (30) | 106 (25) | 0.026 | 96 (30) | 102 (25) | 0.055 |
   Respiratory rate (breaths/minute) | 19 (5) | 20 (5) | 0.040 | 19 (5) | 20 (5) | 0.021 |
   Systolic BP (mmHg) | 136 (38) | 125 (34) | 0.082 | 136 (37.899) | 130 (40.761) | 0.207 |
   Diastolic BP (mmHg) | 77 (22) | 75 (20) | 0.460 | 78 (21) | 73 (23) | 0.076 |
   Oxygen saturation (%) | 96 (6) | 93 (13) | < 0.001 | 96 (6) | 94 (9) | 0.001 |
   Pain score | 0 (0 to 3) | 0 (0 to 3) | 0.825 | 0 (0 to 3) | 0 (0 to 0) | 0.010 |
HRV variables | Â | Â | Â | Â | Â | Â |
   aRR (s) | 0.718 (0.177) | 0.621 (0.149) | < 0.001 | 0.721 (0.175) | 0.644 (0.176) | < 0.001 |
   STD (s) | 0.053 (0.033) | 0.057 (0.047) | 0.490 | 0.054 (0.033) | 0.051 (0.044) | 0.534 |
   avHR (beats/minute) | 89.004 (20.566) | 102.692 (22.136) | < 0.001 | 88.582 (20.317) | 99.971 (22.975) | < 0.001 |
   sdHR (beats/minute) | 6.463 (3.740) | 8.152 (5.531) | 0.005 | 6.473 (3.731) | 7.204 (4.877) | 0.094 |
   RMSSD (ms) | 0.039 (0.041) | 0.048 (0.054) | 0.272 | 0.038 (0.039) | 0.048 (0.063) | 0.184 |
   nn50 (count) | 571 (1,268) | 484 (748) | 0.655 | 547 (1,178) | 765 (1,800) | 0.123 |
   pnn50 | 7.048 (12.268) | 6.561 (9.667) | 0.797 | 6.878 (11.773) | 8.460 (15.411) | 0.251 |
   RR triangular index | 2.475 (1.000) | 2.046 (0.736) | 0.006 | 2.486 (1.000) | 2.158 (0.840) | 0.004 |
   TINN (ms) | 0.217 (0.130) | 0.189 (0.148) | 0.170 | 0.219 (0.130) | 0.184(0.142) | 0.017 |
   VLF power (ms2) | 0.131 (0.102) | 0.099 (0.084) | 0.045 | 0.133 (0.101) | 0.098 (0.097) | 0.002 |
   LF power (ms2) | 0.057 (0.042) | 0.056 (0.045) | 0.876 | 0.058 (0.043) | 0.053 (0.040) | 0.319 |
   HF power (ms2) | 0.080 (0.070) | 0.103 (0.083) | 0.032 | 0.079 (0.070) | 0.100(0.077) | 0.008 |
   Total power (ms2) | 0.268 (0.135) | 0.259 (0.131) | 0.673 | 0.269 (0.135) | 0.251 (0.137) | 0.223 |
   LF power (nu) | 45.430 (18.489) | 36.459 (15.798) | 0.002 | 45.938 (18.586) | 35.990 (14.452) | < 0.001 |
   HF power (nu) | 54.566 (18.487) | 63.541 (15.798) | 0.002 | 54.058 (18.583) | 64.010 (14.452) | < 0.001 |
   LF/HF ratio | 1.205 (1.284) | 0.802 (1.171) | 0.043 | 1.232 (1.299) | 0.742 (0.992) | 0.001 |
MEWS | 2 (1 to 4) | 4 (2 to 5) | < 0.001 | 2 (1 to 4) | 4 (2 to 5) | < 0.001 |