Ecg basics 3 pdf
- 1. ECG BASICS 3 DISTURBANCES OF RATE
- 2. WHAT IS NORMAL THE NORMAL ADULT HEART RATE IS BETWEEN 60-80 BPM IN A RESTING ADULT HEART WELL CONDITIONED ATHLETES MAY HAVE A RESTING HEART RATE BELOW THIS THERE ARE TWO WAYS TO DETERMINE THE HEART RATE ON AN ECG
- 3. BUT FIRST NOTE WE HAVE THIN AND THICK LINES, AND BLOCKS EACH SMALL LINE REPRESENTS 0.04 SECS AND THE DISTANCE BETWEEN EACH BLOCK IS 0.2 SECS
- 4. COUNT THE NUMBER OF BIG BLOCKS BETWEEN R- WAVES, CHOOSE AN R THAT FALLS ON A THICK LINE DIVIDE 300 BY THIS NUMBER, IN THIS CASE ALMOST 4 BLOCKS, 300/4 = 75
- 5. ALTERNATIVELY YOU CAN JUST REMEMBER THE SEQUENCE 300 150 100 75 60 50 42 37 300 150 100 60 42 33 75 50 37
- 6. GOT IT?! IF YOU CANT REMEMBER JUST LOOK AT THE TOP OF YOUR ECG PRINTOUT. MOST MACHINES WORK OUT THE RATE FOR YOU!
- 7. REMEMBER YOU STILL NEED TO CHECK YOUR AXIS AND RHYTHM IN ALL ECGS
- 9. CHECK THE RHYTHM THEN THE RATE OR VICE VERSA CAN YOU MAKE A DIAGNOSIS?
- 10. A SINUS TACHYCARDIA NOTICE THE CONSISTENT P-WAVES BEFORE EACH QRS
- 11. RHYTHM THEN RATE CAN YOU MAKE THE DIAGNOSIS
- 12. A SINUS BRADYCARDIA AGAIN NOTE THE CONSISTENT P-WAVES
- 13. ALSO NOTE THE WIDTH OF THE COMPLEXES CAN YOU MAKE THE DIAGNOSIS
- 14. A SUPRAVENTRICULAR TACHYCARDIA NOTE THE ABSENCE OF P-WAVES AND THE NARROW COMPLEXES
- 15. THIS IS A JUNCTIONAL BRADYCARDIA NOTE THE ABSENCE OF P-WAVES, THIS MEANS THE RHYTHM IS GENERATED BY THE VENTRICLES ONLY
- 16. THIS IS AN OBVIOUS TACHYCARDIA WHAT TYPE IS IT?
- 17. THIS IS A VENTRICULAR TACHYCARDIA NOTE THE WIDE QRS COMPLEXES
- 18. AS A GENERAL RULE THIN COMPLEXES MEAN THE ELECTRICAL ACTIVITY ORIGINATES IN THE ATRIA THICK COMPLEXES IMPLY THE STIMULUS OR PACEMAKER IS THE AV NODE OR LOWER
- 19. ANOTHER BRADYCARDIA CAN YOU MAKE THE DIAGNOSIS? THINK BACK TO OUR PREVIOUS LECTURE
- 20. THIS IS A 3RD DEGREE HEART BLOCK NOTE THE WIDE COMPLEXES, AND THAT THERE IS NO CONNECTION BETWEEN THE P-WAVES AND QRS COMPLEXES NOTE THAT THE P-WAVES ARE OCCURRING AT A REGULAR RATE, AS ARE THE QRS COMPLEXES, BUT IT IS OCCURRING INDEPENDENTLY
- 21. A TACHYCARDIA IT DOES LOOK STRANGE, CAN YOU MAKE THE DIAGNOSIS?
- 22. THIS IS ATRIAL FLUTTER ITS DIFFICULT BECAUSE THE T-WAVES ARE BURIED
- 23. THIS IS A MORE TYPICAL EXAMPLE AGAIN NOTE THE ABSENCE OF THE T-WAVES
- 24. ANOTHER TACHY NOTE THE IRREGULARITY, CAN YOU MAKE THE DIAGNOSIS?
- 25. THIS IS ATRIAL FIBRILLATION NOTE THE IRREGULARITY AND ABSENCE OF P-WAVES AS COMPARED TO SVT WHICH OCCURS WITH MILITARY PRECISION BETWEEN THE QRS COMPLEXES
- 27. ONE FINAL ONE DR OF THE WEEK TO WHOEVER MAKES THE DIAGNOSIS
- 28. AN ACCELERATED JUNCTIONAL RHYTHM NOTE THE ABSENCE OF P-WAVES BUT ITS NOT AS FAST AS AN SVT
- 29. I HOPE THIS WILL PROMPT YOU TO GO AND LEARN MORE ABOUT RATE ABNORMALITIES ONCE YOU ARE COMFORTABLE RECOGNISING THE DIFFERENT RHYTHMS AND TACHY/BRADYS, WE WILL LEARN ABOUR TREATMENT THANK YOU