A woman in her 60s with melanoma metastatic to the mediastinum presented with intermittent palpitations and light-headedness. On physical examination, the patient was anxious and tachycardic. A 12-lead electrocardiogram (ECG) was performed (Figure, A).
Questions: Is this wide complex tachycardia ventricular tachycardia (VT) or supraventricular tachycardia (SVT) with aberrant conduction? What features on the ECG can be used to distinguish these causes?
Identify all potential conflicts of interest that might be relevant to your comment.
Conflicts of interest comprise financial interests, activities, and relationships within the past 3 years including but not limited to employment, affiliation, grants or funding, consultancies, honoraria or payment, speaker's bureaus, stock ownership or options, expert testimony, royalties, donation of medical equipment, or patents planned, pending, or issued.
Err on the side of full disclosure.
If you have no conflicts of interest, check "No potential conflicts of interest" in the box below. The information will be posted with your response.
Not all submitted comments are published. Please see our commenting policy for details.
Cerantola M, Arkles J, Frankel DS. Diagnostic Approach to Wide Complex Tachycardia. JAMA Intern Med. Published online July 19, 2021. doi:10.1001/jamainternmed.2021.3189
Coronavirus Resource Center
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: