What does RA stand for ECG?

Each of the 12 leads represents a particular orientation in space, as indicated below (RA = right arm; LA = left arm, LL = left foot):

What is aVR aVL and aVF in ECG?

aVR means augmented Vector Right; the positive electrode is on the right shoulder. aVL means augmented Vector Left; the positive electrode is on the left shoulder. aVF means augmented Vector Foot; the positive electrode is on the foot.

Where do you place V1?

The six chest electrodes:

1. V1 – placed in the 4th intercostal space, right of the sternum.
2. V2 – placed in the 4th intercostal space, left of the sternum.
3. V3 – placed between V2 and V4.
4. V4 – placed 5th intercostal space in the nipple line.
5. V5 – placed between V4 and V6.

Where is Ra electrode lead placement?

The recommended 3-wire ECG lead placement is as follows. Place RA (white) electrode under right clavicle, mid-clavicular line within the rib cage frame. Place LA (black) electrode under left clavicle, mid-clavicular line within the rib cage frame.

What are the 5 lethal rhythms?

You will learn about Premature Ventricular Contractions, Ventricular Tachycardia, Ventricular Fibrillation, Pulseless Electrical Activity, Agonal Rhythms, and Asystole. You will learn how to detect the warning signs of these rhythms, how to quickly interpret the rhythm, and to prioritize your nursing interventions.

What happens if aVR is positive?

A positive QRS complex in lead aVR indicates that the origin of the impulse is close to the apex of the left ventricle with depolarization progressing toward the base.

What is the normal ECG report?

Normal range 120 – 200 ms (3 – 5 small squares on ECG paper). QRS duration (measured from first deflection of QRS complex to end of QRS complex at isoelectric line). Normal range up to 120 ms (3 small squares on ECG paper).

Why is V1 and V2 negative in ECG?

In right chest leads V1 and V2, the QRS complexes are predominantly negative with small R waves and relatively deep S waves because the more muscular left ventricle produces depolarization current flowing away from these leads.

What can mess up a EKG?

7 weird things that can mess with your heartbeat

• Panic attacks. If you feel as if your heart is racing like it’s going to beat out of your chest, it could be a panic attack, Doshi says.
• Caffeine. So your heart’s beating faster than normal.
• Decongestants.
• Dehydration.
• Prescription meds.
• Anemia.
• Heavy metals.

What does the P wave stand for?

electrical depolarization
The P wave represents the electrical depolarization of the atria. In a healthy person, this originates at the sinoatrial node (SA node) and disperses into both left and right atria.