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The Relationship Between Blood Glucose Level And Qtc Duration In The Critically Ill, Ellen Burkett, Gerben Keijzers, James Lind
The Relationship Between Blood Glucose Level And Qtc Duration In The Critically Ill, Ellen Burkett, Gerben Keijzers, James Lind
Gerben Keijzers
Objective: To determine whether hyperglycaemia is associated with prolongation of the corrected QT (QTc) interval on the electrocardiogram (ECG) in critically ill patients. Design: Single- centre, prospective observational study. Participants and setting: 197 consecutive patients admitted to the adult intensive care unit of a 570- bed teaching hospital over 10 weeks from November 2004. Main outcome measures: Correlation between QT interval (on standard 12-lead ECG taken on ICU admission, corrected with Bazett's formula) and serum glucose level (BGL) in blood collected at time of ECG; comparison of variables, including BGL, by QTc category (< or = 0.44 s or > 0.44 s); explained variance (R(2)) of …