Q:  What are the causes of slurring at the base of the R wave?

 Today's expert is Dr. Jerry W. Jones, MD

                                         Dr Jones is known for his Master Classes in Advanced ECG Interpretation, through his company, Medicus of Houston, as well as his published texts, Getting Acquainted With Wide Complex Tachycardias, Getting Acquainted With Laddergrams, and Getting Acquainted With Ischemia and Infarction. His books are available on Amazon.com and on BarnesAndNoble.com. Dr. Jones provides a wealth of free, high-quality ECG instruction on his webpage, and offers tutoring via Zoom. He is a sought-after instructor who is well-known for his celebrated ability to explain complex concepts so that they become understandable and manageable.

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