EKG Basics
What does EKG stand for?
Electrocardiogram
Which chamber pumps blood to the lungs?
Right ventricle
Wave for atrial depolarization?
P wave
Irregular rhythm with no P waves?
Atrial fibrillation
How many leads in a standard EKG?
12 leads
What should patients avoid before EKG?
Lotions or oils
Normal adult heart rate range?
60-100 bpm
Valve between left atrium and ventricle?
Mitral (bicuspid) valve
PR interval measures what?
Atrial depolarization to ventricular depolarization
Wide QRS rhythm from ventricles?
Wide QRS rhythm from ventricles?
Placement of V1?
4th intercostal space, right sternal border
Why is skin prep important?
Improves electrode contact
Which chamber initiates the heartbeat?
Right atrium
Which structure delays the electrical impulse in the heart?
AV node
Normal PR Interval?
0.12 -0.20 seconds
Fast regular rhythm > 100 bpm?
Tachycardia
Placement of V4?
5th intercostal space, midclavicular line
Action if the patient is shivering?
Provide warmth
Primary pacemaker of the heart?
SA node
Arteries supplying heart muscle?
Coronary arteries
Segment for early ventricular repolarization?
ST segment
Described as wide and bizarre.
Premature ventricular complexes (PVC)
Result of incorrect lead placement?
Inaccurate or false readings
Correct patient position?
Supine
What electrical event causes ventricular contraction?
QRS complex
Most important electrolyte for conduction?
Potassium
T wave represents what?
Ventricular repolarization
Chaotic, life-threatening rhythm?
Ventricular fibrillation
Lead at left midaxillary line?
V6
Action if abnormal rhythm seen?
Report immediately to the provider.