Table 3.
Admission Electrocardiogram and Echocardiogram Findings of 38 Young Women Hospitalized for Anorexia Nervosa
| Finding | Mean (SD)a | Median (Range) |
|---|---|---|
| ECG data | ||
| Heart rate, beats/min | 48.6 (15.6) | 45.0 (30.0 to 100.0) |
| Bradycardia, beats/min, No. (%) | ||
| <50 | 26 (68) | NA |
| <40 | 11 (29) | NA |
| QRS axis, degrees | 72 (18) | 76 (32 to 112) |
| QRS right-axis deviation, No. (%) | 3 (8) | NA |
| Interval, s | ||
| PR | 0.14 (0.03) | 0.15 (0.08 to 0.19) |
| QT | 0.45 (0.05) | 0.45 (0.33 to 0.58) |
| QTc | 0.40 (0.03) | 0.40 (0.34 to 0.45) |
| QT dispersion | 0.04 (0.02) | 0.04 (0.01 to 0.12) |
| JT | 0.37 (0.05) | 0.37 (0.26 to 0.49) |
| JTc | 0.32 (0.03) | 0.32 (0.27 to 0.38) |
| Echocardiogram data | ||
| LV mass, g | 100.1 (23.8) | 97.2 (58.6 to 151.5) |
| LV mass Z score | −0.5 (1.1) | −0.4 (−2.3 to 2.3) |
| Z score <−1, No. (%) | 11 (31) | NA |
| Z score >+1, No. (%) | 3 (9) | NA |
| Septal thickness, cm | 0.8 (0.1) | 0.7 (0.6 to 0.9) |
| Septal thickness Z score | −0.7 (0.7) | −0.6 (−1.9 to 0.7) |
| Z score <−1, No. (%) | 12 (34) | NA |
| Z score >+1, No. (%) | 0 | NA |
| Posterior wall thickness, cm | 0.7 (0.1) | 0.7 (0.5 to 0.9) |
| Posterior wall thickness Z score | −0.6 (0.8) | −0.6 (−2.6 to 1.0) |
| Z score <−1, No. (%) | 9 (26) | NA |
| Z score >+1, No. (%) | 1 (3) | NA |
| LV ESS, g/cm2 | 37.1 (7.6) | 37.0 (14.9 to 51.2) |
| LV ESS Z score | −1.5 (1.0) | −1.5 (−4.3 to 0.3) |
| Z score <−1, No. (%) | 23 (70) | NA |
| Z score >+1, No. (%) | 0 | NA |
| VCFc, count/s | 1.2 (0.2) | 1.2 (0.9 to 1.7) |
| VCFc Z score | 1.8 (2.0) | 1.8 (−2.9 to 6.5) |
| Z score <−1, No. (%) | 3 (9) | NA |
| Z score >+1, No. (%) | 25 (71) | NA |
| Fractional shortening, % | 37.7 (5.1) | 37.2 (27.6 to 55.3) |
| Fractional shortening Z score | 0.6 (1.4) | 0.6 (−2.4 to 4.6) |
| Z score <−1, No. (%) | 4 (11) | NA |
| Z score >+1, No. (%) | 13 (37) | NA |
| Ejection fraction | 0.66 (0.05) | 0.67 (0.56 to 0.77) |
| Ejection fraction Z score | 0.8 (1.2) | 0.9 (−1.5 to 3.2) |
| Z score <−1, No. (%) | 3 (9) | NA |
| Z score >+1, No. (%) | 16 (47) | NA |
Abbreviations: ECG, electrocardiogram; ESS, end-systolic stress; LV, left ventricle; NA, not applicable; VCFc, velocity of circumferential fractional contraction.
a
Values are expressed as mean (SD) unless indicated otherwise.