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P wave

P wave

Q wave

Q wave

R wave

S wave

T wave

What is the peak of P wave called?

Atrial depolarization

What is the spike of the R wave called?

Ventricular depolarization

What is slightly passed the peak of the T wave?

Ventricular repolarization

Where does the PR interval occur?

Right before the P wave and ends right before drop to Q

Where does the QRS occur?

Right before Q and ends right after S

Where does QT interval occur?

Right before Q and ends right after T

Heart rate formula

60/R-R interval

R-R interval reflects what?

Heart rate

What do pulmonary veins do?

Bring back blood to the left atrium

Normal Sinus Rhythm

Complex normal, evenly space. Rate 60-100 bpm

Arrhythmia

All complex normal, irregular rythm

Bradycardia

Complex normal, evenly spaced, Rate < 60 bpm

Tachycardia

Complex normal, evenly spaced. Rate > 100 bpm

Atrial Fibrillation

Baseline irregular. Ventricular response irregular (small squiggles and then big (repeat))

Ventricular fibrillation

Rapid, wide irregular ventricular complexes (badly drawn sin wave)