Anatomy
This chamber receives oxygen-poor blood returning to the heart
Right Atrium
Normal heart rate associated with the SA Node
60-100 BPM
Number of small boxes in one medium box
5 small boxes
Heart rhythm characterized by a rate below 60 BPM
Sinus Bradycardia
First-degree AV block characteristic
PR interval >0.20 seconds
This valve separates the left ventricle from the aorta
Aortic Valve
Wave on EKG indicating atrial depolarization
Total time duration of one medium EKG box
0.20 seconds
Rhythm identified by the absence of a clear P wave
Atrial Fibrillation
Condition where atrial and ventricular rates are independent
Third-degree AV block
These arteries carry deoxygenated blood from the right ventricle to the lungs
Pulmonary Arteries
Time duration for a normal PR interval
0.12-0.20 seconds
How do you calculate the heart rate from a 6-second strip?
Count the QRS complexes and multiply it by 10
Rhythm with a characteristic "sawtooth" pattern
Atrial Flutter
Type of second-degree block with progressive lengthening of the PR interval
Mobitz I (Wenckebach)
The largest artery in the body that receives blood from the left ventricle
Aortic Arch
Normal duration for the QRS complex
What is the total time represented by 30 medium boxes (also known as 6 rows of 5)?
6 Seconds
What has a wide QRS complex and ventricular rate greater than 100 BPM
Ventricular Tachycardia
Type of arrhythmia where the electrical signals originate in the AV node instead of the SA node
Junctional Rhythm
Valve separating the right ventricle and pulmonary artery
Pulmonary Valve
EKG wave indicating ventricular relaxation and repolarization
T Wave
Total number of medium boxes that equals one second
5 Medium Boxes
Rhythm with multiple ventricular extopic sites and a "bowtie" appearance
Arrhythmia with little to no cardiac output requiring immediate defibrillation
Ventricular Fibrillation