Skip to content
View in the app

A better way to browse. Learn more.
allnurses

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.
Discussion

Lead Placement for 12 Lead

I am looking at a picture in my book for the placement of electrodes for a 12 lead ekg and it only shows 10 leads! But it specifically says 12 lead ecg, which I always assumed meant 12 electrodes. There is 1 on each wrist, 1 on each ankle, 5 on the left side of the chest, and 1 on the right side of the chest. It only adds up to 10, where do the other 2 leads go? Thank you

  • Quote

    • Featured Replies

    • Guides

    Google composite leads ;)

    Remember you have three limb leads, three composite leads, and six precordial leads.

    It's not the number of electrodes, it's the polarity of the electrodes.

  • Quote

    Look at a print out of a 12 lead: Leads I, II, III, aVL, aVF, aVR, plus V1 - V6. That adds up to 12.

  • Quote

    The three "augmented" leads are "generated" by using the existing leads. There are additional electrodes that go on the body for those leads. Using a standard 3 lead monitor, I can approximate 9 of the 12 leads. As long as you put the electrodes and leads (wires) in the right places, the machine can electrically "create" those three other leads. I've heard of EKG technology that can generate multiple leads from 5 precisely placed electrodes... Such technology is likely expensive and may not yet be on the market in any large numbers. but it's very cool stuff because you can "see" any lead you desire.

    It's OK to wonder about such things. I did at first until it was explained to me about how the machine works to create the augmented leads.

  • Quote
    • Experts

    There are only 10 "wires" to be connected. The 12 lead is on paper looking at different "view" or axis of the heart.

    1401879330_01167.jpg

  • Quote

    • Join the conversation

    You can post now and register later. If you have an account, sign in now to post with your account.

    Guest
    Add a Comment
    Go to topic listing

    Currently Reading 0

    • No registered users viewing this page.

    Account

    Navigation

    Search

    Search

    Configure browser push notifications
    Chrome (Android)
    1. Tap the lock icon next to the address bar.
    2. Tap Permissions → Notifications.
    3. Adjust your preference.
    Chrome (Desktop)
    1. Click the padlock icon in the address bar.
    2. Select Site settings.
    3. Find Notifications and adjust your preference.