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Patient
47-year-old woman, native of Maghreb, hospitalized for cardiac decompensation;
Trace
Sinus rhythm; "mitral" P wave: wide, biphasic in leads I, II, V5, V6 with wide negative component in V1; right bundle branch block with extreme-right axis deflection (negative in leads I and aVF); cardiac ultrasound showed the presence of a severe mitral stenosis with pulmonary arterial hypertension and right ventricular hypertrophy;
Patient
41-year-old woman with post-rheumatic mitral stenosis hospitalized for shock associated with an atrial fibrillation episode;
Trace
Atrial fibrillation (anarchic atrial activity with large voltages); right axis deviation;