Module 7 - ECG Flashcards
(29 cards)
What are the two types of ECG monitoring systems?
Continuous ECG monitoring and ambulatory monitoring.
What is telemetry monitoring?
Remote ECG monitoring typically used for inpatients.
What is a Holter monitor?
A portable ECG monitor worn by outpatients for 24 hours to a week.
What is the function of the oscilloscope in ECG monitoring?
Displays the ECG waveform in real time.
What triggers an alarm on the heart rate meter?
When the heart rate goes above or below set limits.
What does the standby switch on an ECG monitor do?
Temporarily suspends monitoring while retaining data.
What lead system is most commonly used for ECG monitoring?
Lead II.
What do the colors white, black, and red represent in a 3-lead ECG setup?
White = right arm, Black = left arm, Red = left leg.
What is the P wave?
Atrial depolarization.
What is the PR interval?
Time from beginning of P wave to beginning of QRS complex.
What does the QRS complex represent?
Ventricular depolarization.
What is the T wave?
Ventricular repolarization.
What does a normal sinus rhythm look like?
HR 60–100 bpm, regular rhythm, upright P wave, normal PR and QRS.
What heart rate defines sinus tachycardia?
100–180 bpm.
What heart rate defines sinus bradycardia?
Less than 60 bpm.
What rhythm shows a wavy baseline and irregular QRS?
Atrial fibrillation.
What is a premature ventricular complex (PVC)?
An early, wide, and bizarre-looking QRS without a preceding P wave.
What is ventricular tachycardia (V Tach)?
Rapid ventricular rhythm with HR 100–250 bpm and wide QRS.
What is ventricular fibrillation (V Fib)?
Chaotic, unorganized electrical activity with no pulse.
What is asystole?
Flatline; no cardiac electrical activity.
What should you do before initiating a code for a flatline?
Check the patient and electrode connections.
How do you maintain ECG lead integrity?
Ensure electrodes are secure and replace loose or detached patches.
Why should electrode patches be left in place during imaging?
To allow quick reconnection and reduce cost.
What is the purpose of a crash cart?
To provide emergency resuscitation supplies during cardiac arrest.
