What does it mean to have a wide QRS?
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Lucas Clark
Works at the International Organization for Migration, Lives in Geneva, Switzerland.
Hello, I'm an expert in cardiology with a focus on electrophysiology. When we talk about a wide QRS complex, we're referring to a specific feature seen on an electrocardiogram (ECG), which is a test that records the electrical activity of the heart.
A normal QRS complex, which represents the ventricular depolarization phase during a heartbeat, is typically less than 120 milliseconds in duration. When the QRS complex is wider than this, it's considered "wide." A wide QRS can be a sign of various conditions, including:
1. Bundle branch block: This is a common cause of a wide QRS and occurs when there's a delay in the electrical conduction through the heart's ventricles.
2. Ventricular hypertrophy: Enlargement of the heart's ventricles can also lead to a wide QRS.
3. Myocardial infarction (heart attack): Damage to the heart muscle can alter the electrical conduction pathways, resulting in a wide QRS.
4. Certain medications: Some drugs can affect the heart's electrical activity and cause a wide QRS.
5. Hyperkalemia: High levels of potassium in the blood can also lead to a wide QRS.
It's important to note that a wide QRS complex itself is not a diagnosis but rather a finding that requires further investigation to determine the underlying cause.
A normal QRS complex, which represents the ventricular depolarization phase during a heartbeat, is typically less than 120 milliseconds in duration. When the QRS complex is wider than this, it's considered "wide." A wide QRS can be a sign of various conditions, including:
1. Bundle branch block: This is a common cause of a wide QRS and occurs when there's a delay in the electrical conduction through the heart's ventricles.
2. Ventricular hypertrophy: Enlargement of the heart's ventricles can also lead to a wide QRS.
3. Myocardial infarction (heart attack): Damage to the heart muscle can alter the electrical conduction pathways, resulting in a wide QRS.
4. Certain medications: Some drugs can affect the heart's electrical activity and cause a wide QRS.
5. Hyperkalemia: High levels of potassium in the blood can also lead to a wide QRS.
It's important to note that a wide QRS complex itself is not a diagnosis but rather a finding that requires further investigation to determine the underlying cause.
Works at the International Civil Aviation Organization, Lives in Montreal, Canada.
Wide, bizarre QRS complexes of supraventricular origin are often the result of intraventricular conduction defect which usually occurs due to right or left bundle branch block. ? Wide QRS complexes may be seen in aberrant conduction, ventricular preexcitation and with a cardiac pacemaker.
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Ava Wilson
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Wide, bizarre QRS complexes of supraventricular origin are often the result of intraventricular conduction defect which usually occurs due to right or left bundle branch block. ? Wide QRS complexes may be seen in aberrant conduction, ventricular preexcitation and with a cardiac pacemaker.
