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.
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

ekg stuff

Ekg lecture

SA Node Dominant pacemaker with intrinsic rate of 60-100 bpm
AV Node Back up pacemaker. intrinsic rate of 40-60 bpm
Ventricular cells back up pacemaker with 20-45 bpm
what is normal impulse conduction? SA-AV-Bundle of His-bundle branches-purkinje fibers.
what does P wave represent? atrial depolarization
what does QRS wave rep.? Ventricular depolariztion
what does T wave rep? Ventricular repolarizaton
what is the S-T segment? atrial and ventricular repolarization, should be at baseline, -Tall or spiked waves=Hyperkalemia,MI -elevation=infarction -depression=ischemia
ECG paper boxes -Horizontally small box=.04s large box=.20s -vertically 1 large box=0.5mv
What is duration of PR interval? 0.12-0.20sec
What is duration of QRS interval? 0.06-0.10sec
What is duration of ST segment? not elevated or depressed.
normal heart rate =? 60-100bpm
bradycardia=? <60bpm
Tachycardia=? >100bpm
Flutter=? >200bpm
fibrillation=? Too fast to count
How do you estimate heart rate? count the # of R waves in a 6 sec. strip and X by 10. Or do 300 ___ # of large blocks between R waves.
http://pediatriccardiology.uchicago.edu/PP/Images/Nsr.jpg Normal sinus rhyth.
http://www.cardionetics.com/cardiology/_cardioimages/rhythms/ecg_sinus_bradycardia_1.jpg bradycardia <60bpm Tx:O2 and atropine
http://www.bannerhealth.com/NR/rdonlyres/5CFF4A7B-01B5-4B7A-BF9B-02737DF18C02/24236/tachycardia.jpg tacycardia >101-160 Tx:o2
http://www.ambulancetechnicianstudy.co.uk/images/Flutter.gif Atrial flutter 250-350bpm Tx:O2, digoxin, cardioversion, beta blockers
http://www.jewishhospital.org/myjewishhospital/images/CV-07.jpg atrial fibrillation 400-700bpm chaotic and irregular rhyth. causes: hypoxia,ischemic heart disease, MI Tx:O2 digoxin, cardioversion, beta blockers
http://www.txai.org/img/edu/PVC.jpg PVC. rate depends on underlying rhyth. P wave absent. Causes:caffeine, stress, alcohol,acidosis,MI, hypoxemia. Tx:O2, Lidocaine or Amiodorone.
http://www.cprworks.com/vt VTach. Rate 100-200bpm rhythm regular. no P waves, causes same as PVc Tx: defib. if no pulse, lidocaine or amiodorone and cardioversion if pulse present.
http://www.learnekgs.com/V-Fib%20LARGE.jpg V Fib Rate:NONE rhythm: chaotic pQRS wav: absent No cardiac output or pulse Causes: acute MI, untreated Vtach,hypothrermia, electrolyte imbalance, electric shock. Tx: Defib., CPR, O2
http://www.rnceus.com/ekg/asystole.gif Asystole Rate:none rhythm:none Confirm in 2 leads first, Causes: ischemia, infarct. hypoxia,hypothermia, drug od, acute resp. fail. Tx: CPR, epi, atropine
What is ischemia? decreased blood flow to the tissue;depressed or inverted T wave
what is meant by injury? Acute damage to the tissue often from ischemia; elevated S-T segment
what is Infarction? death of tissue; the end result of ischemia or injury.
Created by: meyoufools