Table 2.
Electrocardiogram characteristics of the patients at admission, after Ca-gluconate treatment and after normalization of potassium
| ECG characteristics (n=111 ECG) | Number of ECG pathologies | ||
|---|---|---|---|
|
| |||
| At admission | After Ca-gluconate | After normalization of K+ | |
| First-degree AV block, n (%) | 35 (32) | 33 (30) | 4 (4) |
| Second-degree AV block, n (%) | 3 (3) | 3 (3) | 0 |
| Third-degree AV block, n (%) | 4 (4) | 3 (3) | 0 |
| Sinus bradycardia, n (%) | 5 (5) | 5 (5) | 1 (1) |
| Slow atrial fibrilation, n (%) | 6 (5) | 6 (5) | 2 (2) |
| Sine-wave appearance, n (%) | 3 (3) | 2 (2) | 0 |
| Ventricular tachycardia, n (%) | 2 (2) | 1 (1) | 0 |
| Escape beats, n (%) | 21 (19) | 18 (16) | 3 (3) |
| Right bundle block, n (%) | 20 (18) | 19 (17) | 17 (15) |
| Left bundle block, n (%) | 23 (21) | 23 (21) | 18 (16) |
| LAFB, n (%) | 12 (11) | 12 (11) | 10 (9) |
| LPFB, n (%) | 9 (8) | 9 (8) | 9 (8) |
| Decreased P wave amplitude, n (%) | 58 (52%) | 58 (52%) | 0 (0%) |
| P wave-amplitude (mm), mean±SD | 1.2±0.5 | 1.2±0.5 | |
| Flattened P wave, n (%) | 6 (5) | 5 (5) | 0 |
| Widened P wave, n (%) | 37 (33) | 36 (32) | 4 (4) |
| P wave-duration (msn), mean±SD | 132±15 | 132±15 | |
| Prolonged QRS interval, n (%) | 57 (51) | 57 (51) | 48 (43) |
| QRS interval- duration (msn), mean±SD | 148±35 | 147±35 | |
| Shortened QTc interval, n (%) | 9 (8) | 9 (8) | 1 (1) |
| QTc interval-duration (msn), mean±SD | 350±15 | 350±15 | |
| Peaked T wave, n (%) | 43 (39) | 41 (37) | 2 (2) |
| T wave-amplitude (mm), mean±SD | 16±9 | 16±8.7 | |
| ST segment elevation, n (%) | 29 (26) | 29 (26) | 20 (18) |
| ST elevation-amplitude (mm), mean±SD | 3.3±1.5 | 3.2±1.5 | |
| Total (n) | 382 | 369 | 139 |
AV: Atrioventricular, LAFB: Left anterior fascicular block, LPFB: Left posterior fascicular block, SD: Standard deviation, ECG: Electrocardiogram