This ECG is taken from an 82-year-old man who called 911 because of chest pain. He has an unspecified “cardiac” history, but we do not know the specifics.
This ECG Challenge is taken from a 95-year-old man. We do not know his clinical information, except that he called 911 for assistance. We also do not have information on his past medical history. The QRS complexes are wide, and there are P waves present. What do you think the etiology of this rhythm is?
This strip shows the onset of atrial fibrillation. A fib can be "paroxysmal," meaning that it has a sudden onset, but then stops spontaneously, usually within 24 hours to a week. A fib can also be classified as "persistent", meaninging that the a fib lasts more than a week. It can stop spontaneously, or be halted with medical treatment. "Permanent" a fib is a fib that is resistent to treatment.
This ECG is presented as an example of INCORRECT MACHINE INTERPRETATION. While there are many abnormalities in this ECG, it does not represent a paced rhythm. While there are exceptions, most paced rhythms represent either AV sequential pacing, right ventricular pacing, or bi-ventricular pacing.
RECOGNITION OF A PACED RHYTHM
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