ECGs Flashcards
What does the P wave represent?
P-waves represent atrial depolarisation
In sinus rhythm, where is the P wave?
In sinus rhythm, there should be a P-wave preceding each QRS complex
What is the PR interval?
It represents the time taken for electrical activity to move between the atria and ventricles
Where is the PR interval?
PR-interval is from the start of the P-wave to the start of the Q wave
What does the QRS complex represent?
The QRS-complex represents depolarisation of the ventricles
What does the ST segment represent?
It represents ventricular repolarisation
Where is the ST segment?
The ST-segment starts at the end of the S-wave & finishes at the start of the T-wave
What does the T wave represent?
The T-wave represents ventricular re-polarisation
What does the RR interval represent?
It represents the time between two QRS complexes
What does the QT interval represent?
It represents the time taken for the ventricles to depolarise & then repolarise
