EKG: Abnormal Interpretations Flashcards
The P Wave is associated with the activation of what area of the heart?
Activation of the Atria
The QRS Complex is associated with the activation of what area of the heart?
Activation of the Ventricles?
The T Wave is associated with the activation of what wave of the heart beat?
The Recovery Wave
How much time is equivalent to one square on an ECG readout?
1 square = 0.04 sec (40 m/s)
What is a normal HR for an ECG analysis?
60-100 bpm.
What is a normal PR Interval for an ECG analysis?
0.12 - 0.20 sec (about small 3 boxes)
What is a normal QRS Interval for an ECG analysis?
< 0.12 sec
How do you calculate rate on an ECG?
Count the number of large boxes between consecutive R waves and divide 300 by this number.
What is Paroxysmal Supraventricular Tachycardias (PSVT)?
Sudden run of >3 premature beats (both sustained for up to hours or longer + brief & non-sustained: 3 beats up to 30 sec)
What are some characteristics of Atrial Flutter’s?
Atrial rate is constant, Ventricular rate depends on AV junction, Variable Rhythm (regular or irregular), and No Observable P Waves.
In Atrial Fibrillations Atrial Rates are _____ and Ventricular Rates are ______ ?
Atrial: Chaotic | Ventricular: Irregular
How would you describe the Rhythm of Atrial Fibrillation?
Irregular, with no specific pattern. No stable relationship between fibrillary atrial waves and the QRS complex’s.
How would you describe the P waves of Atrial Fibrillation?
No identifiable P waves, only fibrillary (f) waves, irregular movements of baseline.
Is the PR Interval measurable in Atrial Fibrillation?
Not measurable.
What triggers an Atrial Fibrillation?
Rapid electrical activity starting in the pulmonary vein and spreading to the atrium.
What is AV (Atrio-Ventricular) heart block?
Conduction disturbances, impaired transmission from atria to ventricles. (AV node dysfunction)
What is the primary measure of AV Heart Blocks?
PR Interval