Freebase(0.00 / 0 votes)Rate this definition: Sponson. Sponsons are projections from the sides of a watercraft, for protection, stability, or the mounting of equipment such as armaments or lifeboats, etc. They extend a hull dimension at or below the waterline and serve to increase flotation or add lift when underway.
ECG (electrocardiogram) and high blood pressure. 1  An electrocardiogram (ECG) is a test which measures the electrical activity of your heart to show whether or not it is working normally. 2  An ECG records the heartâs rhythm and activity on a moving strip of paper or a line on a screen.
These electrical signals are sent to the ECG machine, where they are processed, and printed out as an âECG tracing.â The electrodes are then removed. The ECG test takes less than 5 minutes to perform. What Does the ECG Tracing Look Like? The picture on this page shows a typical, normal ECG. The electrical signals generated from the ten electrodes have been processed into 12 âviewsâ of the heartâs electrical activity - the so-called 12-lead ECG.