Sinus tachycardia
Palpitations That Keep Returning
A 32-year-old woman has repeated visits for palpitations. A recent rash is reported, without fever.
Look for
- Sinus P-wave activity before the QRS complexes.
- Adult heart rate above 100/min.
Where to look. Look for P waves in II and aVF, then compare aVR. Count QRS complexes over a known duration.
The sinus node speeds up while maintaining the P–QRS sequence. The ECG identifies the rhythm; it cannot by itself prove infection or another cause.
The authors report a lupus flare; this case does not document an infectious setting.
References & provenance
The ECG Made Easy, 9e, ch. 4, PDF 91–93; Lilly, 6e, ch. 12, p. 293.
Anas A. Ashour; Shafik Mansour; Mohamad Talal Basrak; Mohammad Altermanini; Bisher Sawaf; Mohamed A. Atta; Mhd Baraa Habib. Case report: Severe sinus tachycardia as a leading manifestation of systemic lupus erythematosus flare. 2023. doi:10.3389/fmed.2023.1277285. Figure 1. CC BY 4.0. CC BY 4.0
Adaptation: cropping and removal of headers/annotations outside the tracing where applicable; metadata removed. Waveforms have not been redrawn.
Compared with the published source; no independent clinical validation is claimed.
Original annotations & limitations
Tachycardie sinusale
Femme de 32 ans; consultations répétées pour palpitations; rash récent, sans fièvre rapportée; poussée de lupus retenue par les auteurs.
Ne pas associer ce cas au contexte infectieux de l’objectif; apprentissage du rythme seulement.