ECG Interpretation Flashcards
What is depolarization?
When the cell becomes more positively charged and causes an electrical signal, i.e a contraction
What is systole?
Contraction
What is diastole?
Relaxation
What is the P wave?
atrial depolarization
What is the PR interval?
Impulse movement from the atria to the ventricles
What is the ST interval?
Interval between ventricular depolarization and repolarization
What is repolarization?
When the cell’s ions switch sides also the membrane so that it’s negatively charged again
What is the QRS complex?
Ventricular depolarization
What is the T wave?
Ventricular repolarization
Where does the impulse begin in the heart?
SA node located in the RA
What is the QT interval?
Onset of ventricular depolarization to full repolarization
Where does the impulse end in the heart?
Ventricles, via the bundle of His and Purkinje fibers
