💔 What is PVC on EKG? ⚡ a heartbeat... that the nurse needs to see!

PVC (Premature Ventricular Contraction)

= ventricular "early beating"

Caused by abnormal electricity in the Ventricles, releasing a "normal rhythm insertion" → heart squeeze ahead of time.

✅ 5 observation points on the EKG (Must Know!)

📌 See these 5 = Catch PVC immediately

• ⚡ come early (Premature) → QRS pop before normal rhythm

• 🧱 Wide & Strange (Wide & Bizarre) → QRS > 0.12 sec (> 3 small channels)

• 🚫 No P wave → because it doesn't start with SA node.

• 🔄 T wave garden → QRS up → T down (Discordant)

• ⏸️ have a break (Compensatory pause) → long stop after PVC

📊 common pattern (Patterns)

Remember = See often in the ward!

• 🔁 Bigeminy → Regular 1: PVC 1

• 🔁 Trigeminy → Regular 2: PVC 1

• ⚡ Couplet → 2 PVC Attached

• ⚠️ Multifocal → Multi-shape = More dangerous

⚠️ Red Flags (Must Hurry, Doctor Report!)

🚨 If you find it like this, "Don't be still!"

• 💥 R-on-T phenomenon → High VT / VF risk

• 🔀 Multifocal PVCs → Multiple Point Turbulent Electricity

• 🧨 Runs of VT → ≥ 3 consecutive

• 📈 Frequent PVCs → > 10 times / min

🧠 Birth mechanism (Pathophysiology)

PVC does not come randomly, but there are 3 main mechanisms:

• ⚡ Enhanced Automaticity → Fire Release Cell Too Fast

• 🔄 Reentry → Electric loop running (i.e. after MI)

• 💣 Triggered Activity → From Abnormal Drugs / Minerals

💊 Cause & Activator (Triggers)

📌 See you often in real clinics!

• 🧪 Electrolyte imbalance → K Low / Mg Low

• ❤️ Ischemia → Ischemic heart

• ☕ Stimulators → Caffeine / Cigarette / Alcohol

• 😵‍💫 Stress + Not enough sleep

👩‍⚕️ Nursing Care

Focus "Assess + Prevent + Surveillance"

• 🫀 Assess Pulse deficit → Listen heart vs palpation pulse

• 📉 Monitor hemodynamic → BP, dizzy, palpitating

• 🧪 Check Lab (K, Mg) → Prepare to fix it immediately

• 🛌 Bed rest → Reduce heart workload

• 📚 Education → Abstain from tea, coffee, cigarettes

🧠 Short summary (remember precisely!)

👉 PVC = QRS. Wide. Come on. No P.

👉 if it comes often / multiple forms = VT / VF risk

👉 Don't forget to check K, Mg = the most common miss point!

📚 Sources

• American Heart Association (AHA)

• Rapid Interpretation of EKG's - Dale Dubin

• Braunwald's Heart Disease

# Nurse Addicted Series # ekg # Emergency # Nursing students # Nurse