Daytime QT by Routine 12-Lead ECG Is Prolonged in Patients with Severe Obstructive Sleep Apnea

Figure 3

QTc based on severity of OSA. Adjusted mean QTc values of subsequent analysis (severe OSA vs. nonsevere OSA). value = 0.03 for severe vs. nonsevere OSA in patients with HF; value = 0.06 for severe vs. nonsevere OSA in patients without HF. OSA = obstructive sleep apnea; HF = heart failure. Patients with severe OSA. Patients without severe OSA.