Difference Between Mobitz 1 and Mobitz 2
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Characteristics |
MOBITZ 1 |
MOBITZ 2 |
|---|---|---|
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Definition |
A form of second-degree AV block known as Mobitz 1, refers to an irregular heartbeat (arrhythmia) where the length of the PR interval gradually lengthens until an impulse is totally blocked before reaching the ventricles. |
A form of second-degree AV block known as Mobitz type II refers to an abnormal cardiac rhythm where the length of the PR interval is prolonged and the duration is constant, and occasionally an impulse is lost before reaching its target. |
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Heart Block |
There is little chance of developing a total heart block. |
The chances of developing a total heart block are high. |
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Causes |
Medications such as digoxin, beta-adrenergic blockers, calcium-channel blockers, and amiodarone, as well as increased parasympathetic activation of the nervous system, can all result in a reversible conduction block that causes Mobitz type I block. |
People without underlying structural cardiac problems hardly ever have Mobitz type II block. The most frequent causes are myocardial infarction or a heart attack, and conditions that affect the heart muscle walls, like cardiomyopathies. |
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Symptoms |
Most patients continue to have no symptoms. |
Compared to those who have Mobitz 1, people with Mobitz 2 are more likely to experience symptoms. Syncope and dizziness are the typical symptoms |
|
Treatment |
A temporary or permanent cardiac pacemaker may be implanted to help people with persistent symptoms. |
A permanent pacemaker is necessary for the treatment of Mobitz type II block.
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| Prognosis | Mobitz 1 is a benign rhythm that commonly indicates an AV node obstruction and has favorable progress. | Mobitz 2 has a worse prognosis since it frequently manifests a block after the AV node, either at the bundle of His or its branches, and is more likely to progress to a third-degree block. |
Difference Between Mobitz 1 and Mobitz 2
Difference Between Mobitz 1 and Mobitz 2: Mobitz 1 and Mobitz 2 are the two primary types of second-degree heart block. The Atria and ventricles of the heart may have abnormally delayed or even blocked impulse conduction. According to the severity of the blocks, these conditions are classified as Atrioventricular Blocks. An electrocardiogram (ECG) can be used to diagnose AV blocks of the first, second, and third degrees. The length of the PR interval in an ECG is prolonged by a delay in the conduction of impulses into the ventricles through the AV node. Some action potentials decline away without continuing to the ventricles when there is a PR interval with a duration of 0.25 to 0.45 seconds. In such cases, there will be a P wave without a QRS-T wave in its wake. A Second-Degree Heart Block is the medical term used for this situation.