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  2. Second-degree atrioventricular block - Wikipedia

    en.wikipedia.org/wiki/Second-degree_atrio...

    Avoidance of AV-nodal-blocking medication, pacemaker. Second-degree atrioventricular block (AV block) is a disease of the electrical conduction system of the heart. It is a conduction block between the atria and ventricles. The presence of second-degree AV block is diagnosed when one or more (but not all) of the atrial impulses fail to conduct ...

  3. Atrioventricular block - Wikipedia

    en.wikipedia.org/wiki/Atrioventricular_block

    Atrioventricular block. Atrioventricular block ( AV block) is a type of heart block that occurs when the electrical signal traveling from the atria, or the upper chambers of the heart, to ventricles, or the lower chambers of the heart, is impaired. Normally, the sinoatrial node (SA node) produces an electrical signal to control the heart rate.

  4. Heart block - Wikipedia

    en.wikipedia.org/wiki/Heart_block

    Heart block. Heart block ( HB) [ 1] is a disorder in the heart 's rhythm due to a fault in the natural pacemaker. [ 2] This is caused by an obstruction – a block – in the electrical conduction system of the heart. Sometimes a disorder can be inherited. Despite the severe-sounding name, heart block may cause no symptoms at all in some cases ...

  5. Atrial flutter - Wikipedia

    en.wikipedia.org/wiki/Atrial_flutter

    Diagnostic method. Electrocardiography. Atrial flutter ( AFL) is a common abnormal heart rhythm that starts in the atrial chambers of the heart. [ 1] When it first occurs, it is usually associated with a fast heart rate and is classified as a type of supraventricular tachycardia. [ 2] Atrial flutter is characterized by a sudden-onset (usually ...

  6. Electrocardiography - Wikipedia

    en.wikipedia.org/wiki/Electrocardiography

    Use of real time monitoring of the heart in an intensive care unit in a German hospital (2015), the monitoring screen above the patient displaying an electrocardiogram and various values of parameters of the heart like heart rate and blood pressure. Electrocardiography is the process of producing an electrocardiogram ( ECG or EKG[ a] ), a ...

  7. Intraventricular block - Wikipedia

    en.wikipedia.org/wiki/Intraventricular_block

    ECG characteristics of an intraventricular block subtype - RBBB showing wide QRS complexes with a terminal R wave in lead V1 and a prolonged S wave in lead V6. An intraventricular block is a heart conduction disorder — heart block of the ventricles of the heart. [ 1] An example is a right bundle branch block, right fascicular block ...

  8. Left bundle branch block - Wikipedia

    en.wikipedia.org/wiki/Left_bundle_branch_block

    Cardiology, Emergency Medicine. Left bundle branch block ( LBBB) is a conduction abnormality in the heart that can be seen on an electrocardiogram (ECG). [ 1] In this condition, activation of the left ventricle of the heart is delayed, which causes the left ventricle to contract later than the right ventricle .

  9. Vectorcardiography - Wikipedia

    en.wikipedia.org/wiki/Vectorcardiography

    Vectorcardiography. Normal vectorcardiogram. ICD-9-CM. 89.53. MeSH. D014672. [ edit on Wikidata] Vectorcardiography ( VCG) is a method of recording the magnitude and direction of the electrical forces that are generated by the heart by means of a continuous series of vectors that form curving lines around a central point. [ 1]