Table 2.
Changes in Parameters During Different Exercise States in Right Heart Catherization
| Characteristic | Rest (leg raise) | Submaximal | Peak |
|---|---|---|---|
| Workload, W | 0 | 40 (35–42) | 70 (62–93) |
| Heart rate, bpm | 74 (65–80) | 106 (92–112) | 125 (110–135) |
| Systolic BP, mm Hg | 117 (104–130) | 146 (127–164) | 161 (147–182) |
| Diastolic BP, mm Hg | 67 (62–73) | 78 (71–87) | 81 (72–96) |
| Mean BP, mm Hg | 81 (76–92) | 105 (94–115) | 108 (94–125) |
| Systolic PAP, mm Hg | 36 (31–42) | 55 (48–62) | 64 (53–75) |
| Diastolic PAP, mm Hg | 13 (9–16) | 17 (13–21) | 20 (16–26) |
| Mean PAP, mm Hg | 23 (20–28) | 34 (28–40) | 40 (34–47) |
| Pulmonary artery wedge pressure, mm Hg | 10 (8–12) | 13 (10–18) | 14 (11–19) |
| VO2, mL/min | 239 (205–279) | 690 (580–851) | 974 (774–1171) |
| VCO2, mL/min | 214 (170–245) | 670 (576–826) | 1077 (952–1336) |
| VE, L/min | 8.5 (7.3–9.9) | 22.8 (19.5–28.2) | 40.7 (34.6–47.4) |
| VE/VO2 | 35.3 (32.5–40.2) | 33.8 (30.4–36.9) | 41.8 (37.6–46.5) |
| VE/VCO2 | 42.1 (37.8–45.9) | 34.5 (32.3–38.1) | 36.1 (33.1–40.6) |
| Respiratory exchange ratio | 0.85 (0.80–0.91) | 1.00 (0.96–1.06) | 1.14 (1.08–1.23) |
| CO, L/min | 6.4 (5.2–7.9) | 11.0 (9.1–13.4) | 13.0 (10.9–15.6) |
| Pulmonary vascular resistance, Wood units | 2.0 (1.3–3.3) | 1.6 (1.1–2.6) | 1.8 (1.3–2.6) |
| Arterial oxygen saturation, % | 96 (95–98) | 96 (94–97) | 95 (93–96) |
| Mixed venous oxygen saturation, % | 74 (71–78) | 58 (52–63) | 50 (44–55) |
| Arterial mixed venous oxygen content difference, mL/dL | 3.7 (3.4–4.2) | 6.7 (5.6–7.3) | 7.9 (7.0–8.6) |
| Peak VO2, mLꞏmin−1ꞏkg−1 | 18.8 (14.8–21.6) | ||
| % predicted peak VO2, % | 69 (57–78) | ||
| VE vs VCO2 slope | 32.4 (29.2–36.6) | ||
| Mean PAP‐CO slope | 2.3 (1.7–3.3) |
Data are presented as median (interquartile range). BP indicates blood pressure; CO, cardiac output; O2, oxygen; PAP, pulmonary artery pressure; VCO2, carbon dioxide output; VE, minute ventilation; and VO2, oxygen consumption.