Cardiac magnetic resonance parameters in CFS compared with matched controls
| Controls | CFS | p Value | |
|---|---|---|---|
| N | 47 | 47 | |
| Age (years) | 47 (13) | 46 (12) | NS |
| Females (n) | 34 (72%) | 34 (72%) | NS |
| Heart rate (/min) | 64 (12) | 67 (12) | NS |
| Systolic blood pressure (mm Hg) | 124 (25) | 109 (18) | 0.002 |
| Diastolic blood pressure (mm Hg) | 76 (10) | 70 (12) | 0.02 |
| Height (cm) | 166 (26) | 166 (10) | NS |
| Weight (kg) | 73 (16) | 74 (17) | NS |
| Ejection fraction (%) | 61 (6.6) | 63 (5.7) | NS |
| Stroke volume (mL) | 73 (16.2) | 57 (12.7) | 0.0002 |
| ED volume (mL) | 121 (30.7) | 91 (21.4) | <0.0001 |
| ES phase (ms) | 334 (44) | 320 (47) | NS |
| ES volume (mL) | 48 (18) | 34 (11) | 0.0006 |
| ED wall mass (g) | 95 (28) | 70 (20) | <0.0001 |
| ED wall+Pap mass (g) | 102 (28) | 77 (22) | <0.0001 |
Values expressed as mean (SD) normalised for body surface area unless stated.
Values in bold typeface statistically significant.
CFS, chronic fatigue syndrome; ED, end diastolic; ES, end systolic; NS, not significant.