Conduction
Anatomy
ECG
How do EKGs work
Wave Forms
100
What is the pacemaker of the heart?
What is SA Node
100
About the size of a human fist.
What is the size of a human heart.
100
What is the HR for NSR?
60-100
100
What small sticky pads are used to detect the heart's electrical signal?
What are electrodes
100
Point to the P wave
Correct
200
What is the backup pacemaker of the heart?
The Av node.
200
How many chambers of the heart are there?
Four
200
What is the HR for Sinus tachycardia?
greater than 100
200
What two things are leads connected to?
What is the patient and the EKG device
200
What comes after the p wave but before the QRS?
PR interval
300
What is the intrinsic rate of the AV node?
40-60 BMP
300
What muscular wall of the heart called?
What is myocardium
300
Your r-r is irregular, and there are no defined P waves. What arrhythmia is it?
Afib
300
What is a cardiac cycle?
The cardiac cycle is the sequence of events that occur during one complete heartbeat.
300
Represents ventricular recovery or repolarization.
What is t-wave
400
What is located after the AV node before the left and right bundle branches?
What is the Bundle of His.
400
What are the four valves of the heart?
Tricuspid Valve
Pulmonary Valve
Mitral Valve
Aortic Valve
400
What are the twp arrhythmias not compatible with life?
Asytole and VFIB
400
The two measurements on a grid paper are _____ and _____. (fill in the blank)
what is voltage and time,
400
Represents the end of ventricular conduction and the beginning of recovery; a change may indicate MI
What is ST segment
500
Can you describe a normal heart conduction pathway?
SA node, nodal pathways, AV node, buddle of his, L/R buddle branches to the Purkinje fibers
500
Can you describe how blood flow through the heart?
Right atrium: Deoxygenated blood in.
Right ventricle: Pumps to lungs.
Lungs: Oxygen in, carbon dioxide out.
Left atrium: Oxygenated blood in.
Left ventricle: Pumps to body.
Body: Uses oxygen, returns deoxygenated blood to star
500
May be seen with excessive moving; the baseline appears wavy, bumpy and tremulous.
What is artifact
500
How does an EKG work?
The EKG machine amplifies the electrical signals to make them more visible on the EKG strip or monitor and records them in real-time.
500
What does the QRS wave represent
Ventricular depolarization