Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove Ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


Sinotrial Node Inherent Rate 60-100 BPM
Atrioventricular Junction Inherent Rate 40-60 BPM
Purkinje Fibers Inherent Rate 20-40 BPM
Lead I Placements Left arm = +, Right arm = -
Lead II Placement Left foot = +, Right arm = -
Lead III Placement Left foot = +, Left arm = -
P Wave Atrial Depolarization
PR Interval Spread of impulse through AV node, bundle of His, right and left bundle branches, and Purkinje fibers
QRS complex Spread of electrical impulse through the ventricles (Ventricle depolarization)
T Wave Ventricle repolarization
QT Interval Total ventricular activity, from ventricular depolarization to repolarization
Normal P Wave Characteristics Smooth and rounded, no more than 2.5mm in height, no more than 0.11 sec in duration, positive leads I, II, aVF, and V2 through V6
Normal PRI Characteristics 0.12 to 0.20 sec, Shortens as heart rate increases, Lengthens as HR decreases
QRS complex Normal Duration 0.06-0.10 sec
Wide QRS Complex may indicate incomplete or complete bundle branch block
ST Segment is elevated if it is more than 1 mm in a limb lead, more than 2 mm in a chest lead
Normal T Wave Characteristics slightly asymmetric, 5mm or less in height in limb lead or 10mm in chest lead, 0.5 mm or more in height in leads I and II
Peaked T Wave may be a sign of Hyperkalemia
Created by: adalmadge