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The electrical conduction of the heart refers to the system that coordinates the heartbeat through electrical impulses. It begins at the sinoatrial (SA) node, which acts as the natural pacemaker, generating impulses that spread through the atria, causing them to contract. The impulses then travel to the atrioventricular (AV) node and down the bundle of His, branching into the right and left bundle branches, leading to the contraction of the ventricles. This organized conduction ensures effective blood pumping and rhythmic heartbeats.
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What is the medical term meaning interruption of the electrical impulses in the heart's conduction system?
Heart block is the term meaning interruption of electrical impulses in the heart's conduction system.
Is the term for a delay or interruption in conduction of the electrical impulse in the myocardium?
The term for a delay or interruption in conduction of the electrical impulse in the myocardium is "heart block." Heart blocks can range from first-degree (mildest) to third-degree (most severe) based on the extent of conduction disruption in the heart's electrical system.
What is an aberrant conduction?
An aberrant conduction is a heart condition where the electrical stimulus travels via an abnormal pathway.
Does the ECG record the electrical stimulation of cardiac muscle by conduction system?
Yes, an ECG records the electrical activity produced by the heart as it contracts and relaxes. This includes the electrical stimulation of the cardiac muscle by the conduction system, such as the SA node, AV node, and Purkinje fibers.
What is Nonspecific Intraventricular conduction delay?
It is a condition in which there is slowed electrical conduction through a ventricle of the heart; usually secondary to cardiomegaly or cardiac failure
What is the function of the intrinsic conduction system of the heart?
The intrinsic conduction system of the heart is responsible for initiating and coordinating the electrical impulses that regulate the heart's contractions. It includes specialized cardiac muscle cells that generate and conduct electrical signals to ensure the synchronized contraction of the heart muscle, allowing for efficient blood pumping.
Which section of the electrical conduction system of the heart is located just after the AV node?
Just after the AV node, the electrical conduction system of the heart continues with the bundle of His, also known as the atrioventricular bundle. This structure transmits electrical impulses from the AV node to the right and left bundle branches, which then conduct the impulses to the ventricles, initiating their contraction.
Which of the following is not part of the conduction system of the heart?
The tricuspid valve is not part of the conduction system of the heart. The conduction system consists of the sinoatrial (SA) node, atrioventricular (AV) node, bundle of His, and Purkinje fibers, which coordinate the electrical impulses that regulate the heartbeat.
What is borderline AV conduction Delay?
Borderline atrioventricular (AV) conduction delay refers to a slight prolongation in the time it takes for the electrical signal to travel from the atria to the ventricles of the heart. While it may not meet the criteria for a definitive diagnosis of AV conduction delay, it can be an indicator of potential heart conduction issues that may require monitoring.
What is dromotropic effect?
Dromotropic effect is the effect on conduction of current. It could be positive or negative depending on the final outcome. A negative dromotropic effect would mean decrease in conduction activity of current while positive would mean increase in conduction activity of current.
What irregularity on a ECG would be considered the most severe?
Asystole, AKA "flat line" indicating no electrical conduction within the heart which means the heart if no longer beating.
When does athletic heart syndrome occur?
the consequence of a normal adaptation by the heart to increased physical activity. The changes in the electrical conduction system of the heart may be pronounced and diagnostic, but should not cause problems
