Figure 1
From: Multivariate analysis of risk factors for QT prolongation following subarachnoid hemorrhage
Correlation between serum potassium levels and corrected QT (QTc) intervals in 100 patients with subarachnoid hemorrhage (SAH). (a) There was a significant inverse correlation between serum potassium levels and QTc intervals (Pearson's correlation coefficient r = -0.439, P < 0.0001) among all SAH patients. Furthermore, we evaluated the impact of sex on the correlation between serum potassium levels and QTc interval. (c) Among female SAH patients there was a significant inverse correlation between serum potassium levels and QTc intervals (r = -0.474; P < 0.0001). (b) On the other hand, there was no significant correlation between serum potassium levels and QTc intervals among male SAH patients.