PMC10374266_01
- Eletrocardiograma inicial, QRS 240 ms.
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Transthoracic echocardiogram (TTE), August/2020, showed LVEF (Simpson) of 26%, left atrial volume, 37 ml/m2, LV end-diastolic diameter, 62 mm, asynchronous septal movement, diffuse hypokinesia, inferior and inferolateral predominance, and laterobasal aneurysm; ECG showed ventricular stimulus simulating LBBB, QRS 240 ms and -60  QRS axis (Figure 1).
- Eletrodo em septo IV profundo (OAE 35 ).
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The end position was confirmed after infusion of iodinated contrast (Figures 2 and 3).
- Radiografia final pos-procedimento.
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The end position was confirmed after infusion of iodinated contrast (Figures 2 and 3).
- Eletrocardiograma pos-estimulacao septal profunda. Observa-se reducao do QRS.
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Final ECG: Pacemaker pacing, atrioventricular stimulation, generating QRS 125 ms, -10  axis (Figure 4).
- Ecocardiograma mostrando ponta de eletrodo septal (seta).
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In the first postoperative month, TTE showed LVEF (38%), left atrial volume, 30 ml/m2, LV diastolic diameter, 60 mm, systolic, 41 mm, IV septum, 8 mm, and posterior wall, 7mm, dyssynchrony reduction, maintaining alterations in contractility secondary to CCM (figure 5).