Patient characteristics
| Cardiac (n=15) | Non-cardiac (n=36) | p Value | |
| Age (years)* | 72.6 (66.1–79.6) | 60.3 (54.0–66.5) | 0.0187 |
| Range | 44–87 | 29–84 | |
| Men (%)‡ | 8 (53%) | 20 (55%) | 0.8588 |
| Height (cm)* | 169 (164–174) | 166 (163–170) | 0.3204 |
| Weight (kg)* | 85 (70–101) | 72 (65–79) | 0.0610 |
| Vital signs* | |||
| Respiratory rate (min−1) | 23 (18–27) | 24 (22–27) | 0.6676 |
| Heart rate (min−1) | 87 (72–101) | 93 (87–99) | 0.3554 |
| Systolic BP (mm Hg) | 127 (115–139) | 125 (118–131) | 0.7457 |
| Temperature (°C) | 36.8 (36.6–37.0) | 36.8 (36.5–37.1) | 1.0 |