Torsades de pointes episode in a woman with high-grade fever and inflammatory activation: A case report

Figure 1 Electrocardiogram before and after Torsades de pointes. A: Electrocardiogram (ECG) exhibited frequent premature ventricular contractions (PVCs) during an attack of high fever and chills; B: ECG when the patient suddenly lost consciousness showed Torsades de pointes (TdP) after PVCs; C: ECG after TdP onset showed a sinus rhythm with a prolonged corrected QT interval of 560 ms.

Figure 2 Sequence chromatograms of KCNH2. A and B: The patient and her father had a heterozygous mutation of c.1370C>T (orange arrow); C: Her mother had no relevant genetic mutations detected (orange arrow).

Figure 3 Sequence chromatograms of AKAP9. A and B: The patient and her father had a heterozygous mutation of c.7725A>C (orange arrow); C: Her mother had no relevant genetic mutations detected (orange arrow).