Which of these planes does the chest leads a 12- leaded ECG (electrocardiograph) record the heart electrical activity? mcq given below:
Q. Which of these planes does the chest leads a 12- leaded ECG (electrocardiograph) record the heart electrical activity?(a) sagittal
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| Do you Agree with Answer comment below |
❤️ 12-Lead ECG – Chest Leads Record Which Plane?
✅ Answer: (d) Horizontal Plane
📖 What is an ECG?
Electro = Electrical
Cardio = Heart
Graph = Recording
👉 An Electrocardiogram (ECG) records the electrical activity of the heart.
📖 What are Chest (Precordial) Leads?
The chest leads V1–V6 are called precordial leads.
👉 They are placed on the chest wall and view the heart from the front.
🫀 Which Plane Do They Record?
The chest leads record the heart’s electrical activity in the horizontal (transverse) plane.
This helps assess:
- Anterior wall
- Septal wall
- Lateral wall of the heart
👉 In most nursing and medical examinations, the accepted answer is Horizontal Plane.
📚 Remember the Two ECG Planes
- Limb Leads (I, II, III, aVR, aVL, aVF) → Frontal (Coronal) Plane
- Chest Leads (V1–V6) → Horizontal (Transverse) Plane
❌ Why Other Options Are Wrong?
(a) Sagittal Plane
❌ Divides the body into right and left halves; not used by standard ECG leads.
(b) Coronal Plane
❌ Recorded mainly by the limb leads, not the chest leads.
(c) Transverse Plane
❌ Anatomically, the transverse and horizontal planes are the same. However, since Horizontal is listed separately and is the standard exam terminology for chest leads, option (d) is the expected answer.
Chest Leads (V1–V6) → Horizontal Plane
Limb Leads → Frontal Plane
📌 Disclaimer: For nursing exam preparation only. Anatomically, the horizontal and transverse planes are synonymous, but most exam keys use the term Horizontal Plane for chest leads.
Concept clarity • Easy recall • Nursing success