Health Care > EXAM > NUR 105 Basic ECG Interpretation (All)

NUR 105 Basic ECG Interpretation

Document Content and Description Below

What is an ECG? • An ECG is a simple, noninvasive procedure. Electrodes are placed on the skin of the chest and limbs then connected in a specific order to a machine that, when turned on, measur... es electrical activity all over the heart. Output usually appears on a long scroll of paper that displays a printed graph of activity on a computer screen. 12 Lead ECG • The standard 12-lead electrocardiogram is a representation of the heart's electrical activity recorded from electrodes on the body surface. • The spikes and dips in the tracings are called waves. 12-lead ECG • 12-lead ECG – 10 electrodes required to produce 12-lead ECG. • Electrodes on all 4 limbs (RA, LL, LA, RL) • Electrodes on precordium (V1–6) – Monitors 12 leads (V1–6), (I, II, III) and (aVR, aVF, aVL) – Allows interpretation of specific areas of the heart • Inferior (II, III, aVF) • Lateral (I, aVL, V5, V6) • Anterior (V1–4) 3 & 5 Lead Cardiac Monitoring • Monitor cardiac functioning • Controlled from central monitor room at most acute facilities • Printable or electronic strips are available and place in chart at desired times during 24 hour period 3-Electrode System • 3-electrode system – Uses 3 electrodes (RA, LA and LL). – Monitor displays the bipolar leads (I, II and III) – To get best results – Place electrodes on the chest wall equidistant from the heart (rather than the specific limbs) 5-electrode system • 5-electrode system – Uses 5 electrodes (RA, RL, LA, LL and Chest) – Monitor displays the bipolar leads (I, II and III) – AND a single unipolar lead (depending on position of the brown chest lead (positions V1–6)) Understanding the ECG Grid • ECG tracings are recorded on grid paper. The horizontal axis of the EKG paper records time, with black marks at the top indicating 3 second intervals. • Each second is marked by 5 large grid blocks. Thus each large block equals 0.2 second. The vertical axis records EKG amplitude (voltage). 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. [Show More]

Last updated: 1 year ago

Preview 1 out of 84 pages

Add to cart

Instant download


Buy this document to get the full access instantly

Instant Download Access after purchase

Add to cart

Instant download

Reviews( 0 )


Add to cart

Instant download

Can't find what you want? Try our AI powered Search



Document information

Connected school, study & course

About the document

Uploaded On

Aug 12, 2022

Number of pages


Written in



Member since 1 year

60 Documents Sold

Additional information

This document has been written for:


Aug 12, 2022





Document Keyword Tags

Recommended For You

Get more on EXAM »

What is Browsegrades

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We are here to help

We're available through e-mail, Twitter, Facebook, and live chat.
 Questions? Leave a message!

Follow us on

Copyright © Browsegrades · High quality services·