# Bloqueio atrioventricular de 2° grau Mobitz I | Second-degree atrioventricular block Mobitz I

# Definição | Definition

<span data-sheets-root="1">Ritmo sinusal com BAV de 2o grau, observando-se fenômeno de Weckenbach com ondas P bloqueadas após prolongamento progressivo do intervalo PR.</span>

*<span data-sheets-root="1">Sinus rhythm with 2nd degree AVB, observing Weckenbach phenomenon with blocked P waves after progressive prolongation of the PR interval.</span>*

# Exemplo | Examples

- Exemplo 1 | Example 1

Paciente masculino, 24 anos, em avaliação pré-anestésica. Ao ECG, apresenta ritmo sinusal com fenômeno de Weckenbach com ondas P bloqueadas após prolongamento progressivo do intervalo PR com frequência cardíaca de 54 bpm, correspondendo a **BAV de 2º grau Mobitz I.**

*24-year-old male patient undergoing preanesthetic evaluation. On ECG, he presents sinus rhythm with Wenckebach phenomenon, with blocked P waves following progressive PR interval prolongation, with heart rate of 54 bpm, corresponding to second-degree A**V block Mobitz type I.***

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXdBDvslyROqeuc68zlFtOvO7B4lf6Itr7w4JLSDw7pkVj-5TMIiloan0rDyE4VYxYCP8Jj4Xc3QBBGaPJQmvLw9QWAL6FspKx9RYU98orA7VSUIJM5j0FSvE6sK6z_0VzyLI2dJWQMQwsyqVhCwCJMsRYdf?key=8tFxc3aNVsAdMZc3bjeYHQ)

- Exemplo 2 | Example #2

Paciente feminina, 74 anos, com queixa de dor torácica. Tem diagnósticos de hipertensão arterial sistêmica e obesidade. Ao ECG, apresenta ritmo sinusal com fenômeno de Weckenbach com ondas P bloqueadas após prolongamento progressivo do intervalo PR com frequência cardíaca de 50 bpm, compatível com **BAV de 2º grau Mobitz I.**

*74-year-old female patient presenting with chest pain. She has diagnoses of systemic arterial hypertension and obesity. On ECG, she presents sinus rhythm with Wenckebach phenomenon, with blocked P waves following progressive PR interval prolongation, with heart rate of 50 bpm, consistent with second-degree **AV block Mobitz type I.***

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXeOvl3Dq1YiBmGWwG_TXIucxhKKDoTLiY2E0q78lqxqYoYgR8Lh1MZsE3d6Qht5JPp6zPXaprQ4WUviVcNEWmYjUf1BLH8Ls5PIqqSbgD9fV5XtbUiVS9et_99MiAt-ryUUMt9R_g9xHN_7dSqrvBDSp2sX?key=8tFxc3aNVsAdMZc3bjeYHQ)