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.
The electrodes will be connected to an EKG (electrocardiogram) machine. This machine records your heart's electrical activity. It shows how fast your heart is beating and the heart's rhythm (steady or irregular). An EKG also records the strength and timing of electrical signals as they pass through your heart. The nurse will put a blood pressure cuff on your arm to check your blood pressure during the stress test.