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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 ...
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.
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 ...
A long PR interval (of over 200 ms) indicates a slowing of conduction between the atria and ventricles, usually due to slow conduction through the atrioventricular node (AV node). [1] This is known as first degree heart block. [1] Prolongation can be associated with fibrosis of the AV node, high vagal tone, medications that slow the AV node ...
Right axis deviation. The electrical axis of the heart is the net direction in which the wave of depolarization travels. It is measured using an electrocardiogram (ECG). Normally, this begins at the sinoatrial node (SA node); from here the wave of depolarisation travels down to the apex of the heart. The hexaxial reference system can be used to ...
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 ...
Sgarbossa's criteria are a set of electrocardiographic findings generally used to identify myocardial infarction (also called acute myocardial infarction or a "heart attack") in the presence of a left bundle branch block (LBBB) or a ventricular paced rhythm. [ 1] Myocardial infarction (MI) is often difficult to detect when LBBB is present on ECG.
Junctional rhythm. Junctional rhythm also called nodal rhythm[ 2] describes an abnormal heart rhythm resulting from impulses coming from a locus of tissue in the area of the atrioventricular node (AV node), [ 3] the "junction" between atria and ventricles. Under normal conditions, the heart's sinoatrial node (SA node) determines the rate by ...
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