What do the waves in an ECG mean?

The different waves that comprise the ECG represent the sequence of depolarization and repolarization of the atria and ventricles. The ECG is recorded at a speed of 25 mm/sec (5 large squares/sec), and the voltages are calibrated so that 1 mV = 10 mm (2 large squares) in the vertical direction.

What are the 3 recognizable ECG waves?

17.4B: Electrocardiogram and Correlation of ECG Waves with Systole

• The P Wave.
• The QRS Complex.
• The T Wave and ST Segment.
• Ventricular Fibrillation.

What are the waves called in an EKG?

There are three main components to an ECG: the P wave, which represents the depolarization of the atria; the QRS complex, which represents the depolarization of the ventricles; and the T wave, which represents the repolarization of the ventricles.

Why are Q and S waves negative?

As septal depolarization moves from left to right, the depolarization vector is directed towards the – electrode of lead II (RA), and therefore a negative-going deflection (Q-wave) is produced.

What are the different types of ECG waves?

The up and down lines that you see on an electrocardiogram defines different types of waves, segments and intervals. There are different types of waves observed on ECG which denote depolarization and re-polarization of muscles of ventricle and atrium. They are P wave, R wave, S wave and T wave.

What is normal ECG Wave?

Normal ECG wave: A normal ECG makes a specific pattern of three recognizable waves in a cardiac cycle. These wave are- P wave, QRS wave and T-wave, P-R interval, S-T segment. P-wave: It is a small upward wave that appears first.

Is ECG and EKG the same thing?

An ECG and an EKG are the same exact thing. It’s an electrocardiogram. Both of them are of the heart. It is different than an EEG , which is when a neurologist will check the electricity currents in the brain.

What does an EKG wave mean?

An electrocardiogram (ECG) wave, sometimes called an elektrokardiogramm (EKG) wave, is a diagnostic tool used by clinicians to analyze the electrical activity of the heart in order to determine heart health. The heart contracts to propel blood through the body and contraction is achieved through a series…