Key Points Definition: Narrow complex regular tachycardia refers to a rhythm with a QRS duration <120 ms and a regular rhythm. Key rhythms include Sinus Tachycardia, Supraventricular Tachycardia (SVT), and…
A 67-year-old woman is brought to the ED by EMS for palpitations. She is found to have a heart rate ~168. Vital signs are otherwise within normal limits aside from…