# Dissociação atrioventricular isorrítmica | Isorhythmic atrioventricular dissociation

# Definição | Definition

<span data-sheets-root="1">Ritmo atrial independente do ritmo ventricular, com ausência do enlace AV. Frequência atrial semelhante à ventricular.</span>

<span data-sheets-root="1">*Atrial rhythm independent of the ventricular rhythm, with absence of the AV link. Atrial rate similar to the ventricular rate.*   
</span>

# Exemplos | Examples

- Exemplo 1 | Example #1

Paciente masculino, 60 anos, assintomático. ECG realizado para avaliação pré-anestésica. Ao ECG, apresenta **dissociação atrioventricular isorrítmica**, representada por ritmo atrial independente do ritmo ventricular, com ausência de enlace AV.

*Male patient, 60 years old, asymptomatic. ECG performed for pre-anesthetic evaluation. On the ECG, there is **isorhythmic atrioventricular dissociation**, represented by an atrial rhythm independent of the ventricular rhythm, with the absence of an AV link.*

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXflqDcYC-wsavIoLkVmskgzQxET8AAJtR_LbeN9EmicZA_MDUmThaoF2k9myuX7QZA05cMUAXoitCuvGqGjCk4lLohMXmm8f3G25htuOetw9KFMAUMzoVJ-gWTD_mw0S4zajei4wMEnzAB-0HqTKe7lQ1k?key=MiTtqzqjngi6qmZo-KMfYg)

- Exemplo 2 | Example #2

Paciente feminina, 21 anos, submetida a exame após picada de escorpião. Ao ECG, apresenta **dissociação atrioventricular isorrítmica,** representada por ritmo atrial independente do ritmo ventricular, com ausência de enlace AV. Observa-se, também, presença de bloqueio de ramo esquerdo, representado por QRS alargado, com rS/qS em V1 e ondas R empastadas em V5, V6 e D1.

*Female patient, 21 years old, underwent examination after a scorpion sting. The ECG shows **isorhythmic atrioventricular dissociation**, represented by an atrial rhythm independent of the ventricular rhythm, with absence of AV link. It is also observed the presence of left bundle branch block, represented by a wide QRS, with rS/qS in V1 and jammed R waves in V5, V6 and D1.*

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXfHHBR2x3iqL1w6jVOxpI9oR_gcS9-B9YGqENWuebbBmHcEicouT-ZWLKGgDJr1QlpnHRtZ6xJLpsH_FmKMTDL9xaC5ON_ju0nLDVNK5G_jNQJav3jV8r3TuiAWLeEwwk-L4RCVguM1HR0VfbRcpPdS4VKx?key=MiTtqzqjngi6qmZo-KMfYg)

- Exemplo 3 | Example #3

Paciente masculino, 38 anos, assintomático. Ao ECG, apresenta, **dissociação atrioventricular isorrítmica**, representada por ritmo atrial independente do ritmo ventricular, com ausência de enlace AV.

*Male patient, 38 years old, asymptomatic. The ECG shows **isorhythmic atrioventricular dissociation**, represented by an atrial rhythm independent of the ventricular rhythm, with absence of AV link.*

![](https://lh7-rt.googleusercontent.com/docsz/AD_4nXcp1WRq2CYQzyxuJCMOIYK-4pFIUL_env3JSFVND-XZvfboR7q4W0w0XJp7C2KhfslxGNduFyUcyeRhOBYIXtCvncMTl8JbwmCtf6TTwpUDD3cMbrfj7pEoPnz8FmVzFN3SWxoxnnY86zw3B3SMY_rRtiLq?key=MiTtqzqjngi6qmZo-KMfYg)