What does the ECG wave indicate when interpreted by a cardiologist? Arrhythmia Normal pattern Both normal pattern and arrhythmia None

The answer is **Both normal pattern and arrhythmia**. Here's why:* **Electrocardiogram (ECG):** An ECG is a test that records the electrical activity of the heart. It produces a visual representation of the heart's rhythm and electrical conduction.* **Normal Pattern:** A normal ECG shows a predictable pattern of waves, indicating that the heart is beating regularly and efficiently.* **Arrhythmia:** An arrhythmia is an irregular heartbeat. An ECG can reveal various types of arrhythmias, such as bradycardia (slow heart rate), tachycardia (fast heart rate), atrial fibrillation (irregular heartbeat), and others.**Therefore, a cardiologist interprets an ECG to identify both normal heart rhythms and any abnormalities or arrhythmias that may be present.**