EKG, Sharp New Grad Program

EKG, Sharp New Grad Program
Study online at https://quizlet.com/_fspdsc

1. endocardium *inner* lining of the heart




2. myocardium *middle* muscular layer of the heart




3. pericardium *outer* membrane surrounding the heart




4. sinoatrial node - right upper atrium
(SA node) - pacemaker cells (60-100bpm)




5. atrioventricular - lower right upper atrium
node (AV node) - backup pacemaker (40-60bpm)






, EKG, Sharp New Grad Program
Study online at https://quizlet.com/_fspdsc

6. R-R interval - peak of R wave to peak of next R wave
- interval can be measured to show regular or irregular rhythm




7. isoelectric line baseline of the ECG




8. ECG small square 0.04 seconds




9. ECG large square 0.20 seconds




10. ECG strip length 6 seconds



11. heart rate can be either...
determined by...? - counting # of R waves in 6 sec strip and multiplying by 10
- counting # of small squares in an R interval and then (1500 / # = HR)




, EKG, Sharp New Grad Program
Study online at https://quizlet.com/_fspdsc




12. P wave - first deflection
- depolarization of the atria




13. normal P wave - smooth and rounded
- <2.5mm in height




14. abnormal P wave - tall and peaked
- >2.5mm in height


15. PR interval - P wave AND straight line that follows
- measured from beginning of P wave until beginning of QRS complex




16. normal PR inter- 0.12-0.20 seconds
val