Telemetry Certification Flashcards
PR interval
0.12-0.20 seconds
Represents electrical depolarization of the atria or the time it takes for the electrical impulse to travel from atria to ventricles
QRS complex
less than 0.10-0.12 seconds
Represents ventricular depolarization
QT interval
0.44 seconds
Reflects both ventricular depolarization and repolarization
one small box
.04 seconds and 1mm
one large box
0.2 seconds and 5mm
15 large boxes
3 seconds
30 large boxes
6 seconds
7 steps method to interpreting cardiac rhythm
- is the rhythm regular or irregular. measure the p:p and the r:r
- calculate the atrial rate and calculate the ventricular rate
- is there a p wave for every QRS?
- measure the QRS complexes (normal 0.10-0.12)
- measure the PR intervals (normal: <0.20) if > 0.20 you have a block
- interpretation of rhythm
- intervention
bradycardia intervention
atropine
focal atrial tachycardia intervention
adenosine
ventricular fibrillation intervention
defibrillation and cpr
torsades de pointes intervention
check for pulse
unsynchronized defibrillation
P wave
Represents electrical depolarization of the atria
T wave
Represents ventricular repolarization
ST segment
Represents ventricular repolarization
Normal Sinus Rhythm
- Rhythm: Regular
- Rate: Atrial 60-100 ; Ventricular: 60-100
- P wave: yes
- QRS complex: 0.10-0.12
- PR interval: 0.12-0.20
- Interpretation of Rhythm: Normal Sinus Rhythm
- Intervention: Continue to Monitor Patient
Sinus Bradycardia
- Rhythm: Regular
- RATE: Atrial <60 ; Ventricular <60
- P wave: yes
- QRS complex: 0.10-0.12
- PR interval: 0.12-0.20
- Interpretation of Rhythm: Sinus Bradycardia
- Intervention: Continue to monitor and call physician if new onset
SLOW RATE
Sinus Tachycardia
- Rhythm: Regular
- RATE: Atrial 100-160 ; Ventricular 100-160
- P wave: yes
- QRS complex: 0.10-0.12
- PR interval: 0.12-0.20
- Interpretation of Rhythm: Sinus Tachycardia
- Intervention: continue to monitor patient and call physician if new onset
FAST RATE
Sinus Arrhythmia
- RHYTHM: Irregular
- Rate: Atrial: 60-100 ; Ventricular: 60-100
- P wave: yes
- QRS complex: 0.10-0.12
- PR interval: 0.12-0.20
- Interpretation of Rhythm: Sinus Arrhythmia
- Intervention: Continue to monitor patient
IRREGULAR RHYTHM
Sinus Arrest/Pause
- RHYTHM: Irregular; need to find underlying rhythm
- Rate: Atrial: 60-100 ; Ventricular: 60-100
- P wave: yes
- QRS complex: 0.10-0.12
- PR interval: 0.12-0.20
- Interpretation of Rhythm: Sinus Arrest with second pause
- Intervention: call physician
IRREGULAR RHYTHM & PAUSE
arrest: more than 2 p-p
pause: less than 2 p-p
Premature Atrial Complex (PAC)
- Rhythm: underlying rhythm is regular, individual PAC is irregular
- Rate: Atrial: 60-100 ; Ventricular: 60-100
- P wave: yes, p wave conducted with PAC will have different shape
- QRS complex: 0.10-0.12
- PR interval: <0.20
- Interpretation of Rhythm: Need to identify underlying rhythm and label accordingly
- Intervention: call MD
IRREGULAR RANDOM SHAPED P WAVE
Atrial Tachycardia (SVT)
- Rhythm: Regular
- Rate: Atrial: 100-250 ; Ventricular: 100-250
- P wave: often indiscernible, can be buried in T wave. If you have P wave will be different shape
- QRS complex: 0.10-0.12
- PR interval: UTA
- Interpretation of Rhythm: Atrial Tachycardia
- Intervention: Call MD
FAST P WAVE IN T WAVE