What does 5 large boxes represent on ECG paper?
The ECG paper speed is ordinarily 25 mm/sec. As a result, each 1 mm (small) horizontal box corresponds to 0.04 sec (40 ms), with heavier lines forming larger boxes that include five small boxes and hence represent 0.20 sec (200 ms) intervals.
What is V5 V6 in ECG?
V5, V6 = L side of the heart. Lead I = L side of the heart. Lead II = inferior territory. Lead III = inferior territory. aVF = inferior territory (remember ‘F’ for ‘feet’)
What does a 5-Lead measure?
What is 5-Lead ECG? ECG measures the electrical activity of the heart from several leads (viewpoints) in order to construct a three-dimensional picture of the patient’s cardiac function using vertical and horizontal planes (HEARTe 2017; Cables and Sensors 2016).
What time period is represented by small block?
Two large blocks equal 1 millivolt (mV). Each small block equals 0.1 mV. Within the large blocks are 5 small blocks, each representing 0.04 seconds.
What does the small block on ECG paper represent when measuring the block horizontally?
ECG paper is a grid where time is measured along the horizontal axis. Each small square is 1 mm in length and represents 0.04 seconds. Each larger square is 5 mm in length and represents 0.2 seconds.
Where do you place a 5 lead?
Five-lead system Place the right arm (RA) electrode near the right shoulder, close to the junction of the right arm and torso. Place the left arm (LA) electrode near the left shoulder, close to the junction of the left arm and torso.
Which lead do you normally read a patient’s ECG in?
Nurses are usually the first ones to read that “hot off the press” EKG tracing. A 12-lead EKG is considered the gold standard; however, a 4 lead EKG can also diagnose different heart conditions….Leads and Heart View.
| Lead | View |
|---|---|
| Lateral | I, AVL, V5, V6 |
| Anterior | V2, V3, V4 |
| Right atrium and cavity of left ventricle | V1 and AVR |
Where does V5 lead go?
V5 is placed directly between V4 and V6. V6 is placed over the fifth intercostal space at the mid-axillary line (as if drawing a line down from the armpit). V4-V6 should line up horizontally along the fifth intercostal space.
Where is V5 lead placed?
Follow the 5th intercostal space to the left until your fingers are immediately below the beginning of the axilla, or under-arm area. This is the position for V5. Follow this line of the 5th intercostal space a little further until you are immediately below the centre point of the axilla, (mid-axilla).
What do spikes on ECG mean?
The spikes should appear in regular clusters, each of represents one whole heartbeat. The distance between these spikes shows your heart rate. If the distances are too short, too long, or irregular, it can be a sign of a problem.