Which of the following is false about ECG

Options

A. P.wave `to` Atrial depolarization
B. T-wave `to` Ventricular depolarization
C. T-wave `to` Ventricular repolarization
D. ST depression indicates infraction

Explanation

To determine which statement about the ECG (electrocardiogram) is false, we will analyze each option provided in the question step by step.

### Step 1: Understand the Components of ECG
The ECG records the electrical activity of the heart and consists of several waves and intervals that represent different phases of the cardiac cycle.

### Step 2: Analyze Each Option
1. **P wave atrial depolarization**:
- The P wave represents the depolarization of the atria. This statement is true.

2. **T wave ventricular depolarization**:
- The T wave actually represents the repolarization of the ventricles, not depolarization. This statement is false.

3. **T wave ventricular repolarization**:
- This statement is true as the T wave does represent ventricular repolarization.

4. **ST depression indicates infarction**:
- ST segment depression can indicate myocardial ischemia or infarction. This statement is also true.

### Step 3: Identify the False Statement
From the analysis:
- The false statement is **"T wave ventricular depolarization"** because the T wave represents ventricular repolarization, not depolarization.

### Conclusion
The answer to the question is that the false statement about ECG is **"T wave ventricular depolarization."**

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