Junctional Tachycardia on ECG: The Inverted P Wave You Can’t Ignore!

Junctional Tachycardia on ECG: The Inverted P Wave You Can’t Ignore!

If you’re a nursing student or registered nurse (RN) looking to sharpen your ECG interpretation skills, this video is for you! We dive into the essentials of identifying junctional tachycardia, how it differs from sinus tachycardia, and what clues—like the inverted P wave and short PR interval—can help you tell them apart. Understanding junctional tachycardia vs SVT or junctional tachycardia vs sinus tachycardia is critical when assessing patients with tachycardia types that impact cardiac output.

Whether you're preparing for the NCLEX cardiac rhythms section or brushing up on nursing ECG skills, Nurseminder breaks down junctional rhythm ECG made easy so you can spot the difference confidently. We’ll also cover causes like digoxin toxicity, management strategies, and how to apply this knowledge in real nursing life. Build your nurse skills and grow with Nurseminder—where we simplify complex nursing skills for students and professionals alike.
Junctional tachycardia occurs when the AV node beats at rates over 100 beats per minute, leading to heart rates greater than 100. The key distinguishing feature is the inverted P wave before the QRS complex, indicating atrial contraction before ventricular contraction. This is different from sinus tachycardia, which lacks the inverted P wave. Junctional tachycardia can be mistaken for sinus tachycardia but is marked by a short PR interval and a compromised atrial kick, leading to reduced cardiac output. Treatment options include stopping digoxin, vagal maneuvers, Verapamil, electrolyte replacement, and practice for better recognition and management.

Some of the Resources:

Merck Manual
Essentials of Pathophysiology, Tommie Norris, 5th ed
Quick Reference for Critical Care, Diepenbrock, 3rd ed

Nursing students, nurses, and other health care professionals benefit from learning these signs and symptoms as they are the frontline eyes of the healthcare system.

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