Table 1 Univariate analysis of various factors for predicting severe corrected QT prolongation in 100 SAH-patients
From: Multivariate analysis of risk factors for QT prolongation following subarachnoid hemorrhage
QTc interval (ms) | |||
|---|---|---|---|
Patient variable | <470 (n = 60) | ≥ 470 (n = 40) | P |
Age (years) | 59.4 ± 12.1 | 58.7 ± 11.6 | NS |
Sex (male : female) | 30 : 30 | 6 : 34 | 0.0004 |
H & K grade | |||
Grade 1 | 4 | 2 | NS |
Grade 2 | 25 | 9 | |
Grade 3 | 12 | 12 | |
Grade 4 | 11 | 10 | |
Grade 5 | 8 | 7 | |
Fisher's classification | |||
Group 2 | 5 | 2 | NS |
Group 3 | 41 | 27 | |
Group 4 | 14 | 11 | |
Aneurysm site | |||
AcomA | 16 | 5 | NS |
ICA | 14 | 15 | |
MCA | 13 | 10 | |
Upper BA | 4 | 1 | |
Others | 8 | 6 | |
Unknown | 5 | 3 | |
Sodium (mmol/l) | 139.7 ± 2.9 | 140.0 ± 3.0 | NS |
Potassium (mmol/l) | 3.63 ± 0.42 | 3.21 ± 0.43 | < 0.0001 |
Normal (≥ 3.5 mmol/l; n) | 39 | 10 | < 0.0001 |
Hypokalemia (<3.5 mmol/l; n) | 21 | 30 | |
Calcium (mmol/l) | 8.52 ± 0.39 | 8.29 ± 0.52 | <0.1 |
Glucose (mg/dl) | 178 ± 49 | 207 ± 56 | < 0.02 |
Adrenaline (pg/ml) | 783 ± 923 | 747 ± 937 | NS |
Noradrenaline (pg/ml) | 1122 ± 718 | 1173 ± 548 | NS |
Dopamine (pg/ml) | 37.4 ± 35.7 | 34.2 ± 18.0 | NS |
ADH (pg/ml) | 73.9 ± 58.7 | 77.4 ± 29.4 | NS |