The document discusses several types of cardiac arrhythmias including:
1. Extra-systoles which can be supraventricular or ventricular.
2. Atrial flutter and fibrillation.
3. Bradycardias, blocks, and tachycardias which have specific classifications and characteristics.
The mechanisms of arrhythmias are described as being either due to reentry of electrical impulses, abnormal automaticity, or conduction abnormalities. Specific conditions must be met for the reentry mechanism, and abnormal automaticity can arise from reduced membrane potentials self-propagating electrical activity.
Aula Eletrocardiograma Gabriel Dotta[2009]Gabriel Dotta
Aula de para a Disciplina de Cardiologia da Universidade Federal de Santa Maria.
Autor: Gabriel Dotta
Bibliografia: The Only ECG Book You'll Ever Need. Thaler, MS.
Aula Eletrocardiograma Gabriel Dotta[2009]Gabriel Dotta
Aula de para a Disciplina de Cardiologia da Universidade Federal de Santa Maria.
Autor: Gabriel Dotta
Bibliografia: The Only ECG Book You'll Ever Need. Thaler, MS.
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17. BRADICARDIAS SINUSAIS
- RÍTMO SINUSAL, FC < 50.
- TEM IMPORTÂNCIA QUANDO PERSISTENTE E
SINTOMÁTICA. NEM SEMPRE É PATOLÓGICA.
HOLTER É BEM INDICADO: CORRELAÇÃO ECG –
SINTOMAS.
- TESTES AUTONÔMICOS: ATROPINA,
ISOPROTERENOL, MASSAGEM DO SEIO
CAROTÍDEO.
18. BLOQUEIO ÁTRIO-VENTRICULAR 1 GRAU
- É O MAIS COMUM: 0,5-1,5% DA POP > 30 ANOS.
- EM CORAÇÕES NORMAIS NÃO ACARRETA MAIORES
COMPLICAÇÕES E NÃO PROGRIDE.
- PROLONGAMENTO DO PR ACIMA DE 0,20s.
- NÃO REQUER TRATAMNTO ESPECÍFICO
19. BLOQUEIO ÁTRIO-VENTRICULAR 2 GRAU -
MOBITZ TIPO 1
- PROLONGAMENTO PROGRESSIVO DO PR ATÉ QUE
UMA ONDA P NÃO É SEGUIDA DE UM QRS.
- NÃO REQUER TRATAMENTO QUANDO A FC É
SATISFATÓRIA E O QRS É ESTREITO.
20. BLOQUEIO ÁTRIO-VENTRICULAR 2 GRAU -
MOBITZ TIPO 2
- MENOS FREQUENTE, SEM PRE INDICATIVO DE
DEGENERAÇÃO DO SISTEMA DE CONDUÇÃO INFRA
NODAL.
- RELAÇÃO DA CONDUÇÃO AV VARIÁVEL OU FIXA. PR
FIXO
- MARCAPASSO DEFINITIVO ESTÁ INDICADO.