PCT Exam 1

Also known as the baseline, it is best determined by drawing a line between the end of the T and beginning of the P wave.

• P wave

• isoelectric line

• SA node

• Av node

Located in the proximal intraventricular septum. It merges from the AV node to begin the conduction of the impulse from the AV node to the ventricles.

• Bundle of His

• ST segment

• T wave

• Electrode

A small rounded wave on an EKG that indicates atrial contraction.

• T wave

• AV node

• P wave

• SA node

The interval of time between the P wave and the R wave on the ECG.

• R-R interval

• P-P interval

• long QT interval

• PR interval

A QT interval longer than 0.42 secs.

• Long QT interval

• Short QT interval

• PR interval

• P-P interval

A heart rhythm initiated in the AV node in the event of SA node failure.

• Junctional rhythm

• sinus rhythm

• rhythm strip

• normal rhythm

The interval from the peak of one QRS complex to the next. It is used as an indicator of regularity when evaluating the heart's rhythm on an EKG.

• long QT interval

• R-R interval

• PR interval

• P-P interval

Portion on the EKG wave from the end of the P wave to the beginning of the QRS complex, lasting about 0.1 secs.

• PR segment

• ST segment

• R segment

• T segment

A cluster of special muscle fibers located in the right atrial wall of the heart considered to be the primary pacemaker of the heart.

• Av node

• SA node

• SV node

• AV node

EKG measurement of the time between ventricular depolarization and repolarization.

• short OT interval

• long QT interval

• P-P interval

• QT interval