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In most cases, you would not need to treat this. It does not mean anything significant the vast majority of times.
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∙ 14y ago
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Can someone help you decipher your EKG report It says sinus tachycardia borderline AV conduction delay and probable left atrial abnormality.?
sinus tachycardia = rapid heartbeat borderline av conduction delay = a slight delay in the conduction of electrical impulse from the atria, at the top of the heart, to the ventricles, at the base of the heart. The ventricles are the chambers that do the pumping of blood to the lungs and to the body. The atria are the two "collecting" chambers for the blood returning to the heart from the lungs and from the body. The electrical impulse of a heartbeat starts in the right atrium, travels across to the left atrium and down to the top of the ventricles. This causes the atria to contract and push blood through heart valves into the chambers of the heart called Ventricles. The contraction then has a slight pause as the impulse "stimulates" the atrioventricular node to pass the impulse down to the base of the right and left ventricles. When the impulse passes the AV node, the ventricles contract and push the blood out to the lungs to be oxygenated and to the body. A slight delay in the conduction of the impulse is normal but it is only a fraction of a second. Any delay in the conduction which is longer than the "normal" fraction of a second is considered an abnormal av conduction delay. Probable Left Atrial abnormality = some kind of abnormal size, shape, structure, or electrical conduction in the chamber at the top of the left side of the heart. Remember that the atria are chambers for collecting blood returning to the heart. The left atrium is the chamber for collecting blood which is returning from the lungs. This is freshly oxygenated blood. The blood travels from the lungs to the left atrium. When the atria contract, the blood is pushed from the left atrium into the left ventricle. When the ventricles contract, the blood is then pumped from the left ventricle out into the aorta (the largest artery in your body) and then on to the furthest reaches of your body.
Is the AV node the slowest conducting tissue in the cardiac conduction and contraction?
Yes. The AV node is the slowest conducting tissue of the heart. You can reason that the delay in the AV node exists to allow for maximal ventricle filling before contraction. After the AV node completes depolarization, the Perkinje fibers lay claim to the quickest conduction to best reach the ventricle muscle in one large burst providing maximal contraction. I hope this is helpful.
What is AV nodal delay?
AV node is responsible for the delayin transmission of impulse generated in the SA node.This delay of impulse transmissions is called AV nodal delay. It is about 0.09 sec.Causes of AV nodal delayi. Junctional fibres of the AV node are very small in size.ii. Prolonged refractory periodof AV node.
What are AV nodes?
AV node is biologically an inhibitor of the conduction across the atrium to ventricles. The conduction of impulse is delayed across the AV node. This buys time for the atria to contract, to be fallowed by ventricles.
What are AV nodes biologically?
AV node is biologically an inhibitor of the conduction across the atrium to ventricles. The conduction of impulse is delayed across the AV node. This buys time for the atria to contract, to be fallowed by ventricles.
What is the significance of the delay in transmission at the AV node in the heart?
The transmission delay at the AV node in the heart allows both ventricles to relax and be refilled by the contracting atria. After the AV node delay, the ventricles contract and force blood into the aorta (systemic circulation).
What areas of the cardiac conduction system make up the AV junction?
AV node and bundle of His
What is meant by AV delay and what purpose does the delay serve?
The term AV delay refers to Atrioventricular Node delay. It is an important function in the human body as it makes sure that the atria have gotten all of their blood transported to the ventricles before they contract.
Which part of the heart has the longest action potential?
The AV (atrioventricular node). Electrical conduction is slowed down at this node, and half the time of each action potential is spent on getting the signal through the AV node. This delay is to allow the ventricles to fill completely with blood before they get the signal to contract.
Which of the following is not part of the conduction system of the heart?
The AV ValveAV Valve
What is slowest conduction velocity?
Referring to cardiac pathways it is found in the AV node.
What is the point in the intrinsic conduction system where the impulse is temporarily delayed?
Av node
