A 69-year-old woman is being brought in by EMS for palpitations and dizziness. She is found to be markedly tachycardic, but is alert with a normal blood pressure. The following…
Key Points Basic Distinction: SVTs typically have narrow QRS complexes (<120 ms) but may present with wide complexes if aberrantly conducted (e.g., with existing bundle branch block). Clinical Importance: Differentiating…