TELEMETRY (EXAM 1) QUESTIONS AND
ANSWERS
What do the SA & AV nodes contract? - Answer-SA-->AV=atrial contraction
AV-->bundle of HIS-->purkinje fibers=ventricular contraction
Normal intervals - Answer-*memorize these*
PR: .12-.2
QRS: .04-.12
QT: .34-.43
BPM when different nodes are in control - Answer-SA: 60-100
AV: 40-60
HIS-Purkinje: 20-40
How many seconds are the squares worth on ECG paper? - Answer-small square: .04
large square: .20
5 large squares: 1.0
1 strip: 6.0
Questions to ask when reading ECG - Answer-1. is there a P for every QRS?
2. does it walk out?
3. what are the intervals?
4. what is the rate/rhythm?
How do you treat dysrhythmias? - Answer-based upon symptoms
no symptoms=no treatment
Sinus Bradycardia - Answer-<60bpm
-walks out
-SA node in control
-causes: hypoxia, hypothermia, sleep, athletes, meds
-symptoms: syncope, chest pain, hypotension, SOB, diaphoresis
-treatment: atropine, underlying cause
Sinus Tachycardia - Answer->100bpm
-walks out
-SA node in control
-causes: fever, anemia, hypotension, pulmonary embolism, MI
-symptoms: dizzy, syncope, SOB, diaphoresis, anxiety, palps
-treatment: underlying cause, vagal maneuvers, meds
Atrial fibrillation (AFIB) - Answer--no identifiable P wave
-AV node in control
ANSWERS
What do the SA & AV nodes contract? - Answer-SA-->AV=atrial contraction
AV-->bundle of HIS-->purkinje fibers=ventricular contraction
Normal intervals - Answer-*memorize these*
PR: .12-.2
QRS: .04-.12
QT: .34-.43
BPM when different nodes are in control - Answer-SA: 60-100
AV: 40-60
HIS-Purkinje: 20-40
How many seconds are the squares worth on ECG paper? - Answer-small square: .04
large square: .20
5 large squares: 1.0
1 strip: 6.0
Questions to ask when reading ECG - Answer-1. is there a P for every QRS?
2. does it walk out?
3. what are the intervals?
4. what is the rate/rhythm?
How do you treat dysrhythmias? - Answer-based upon symptoms
no symptoms=no treatment
Sinus Bradycardia - Answer-<60bpm
-walks out
-SA node in control
-causes: hypoxia, hypothermia, sleep, athletes, meds
-symptoms: syncope, chest pain, hypotension, SOB, diaphoresis
-treatment: atropine, underlying cause
Sinus Tachycardia - Answer->100bpm
-walks out
-SA node in control
-causes: fever, anemia, hypotension, pulmonary embolism, MI
-symptoms: dizzy, syncope, SOB, diaphoresis, anxiety, palps
-treatment: underlying cause, vagal maneuvers, meds
Atrial fibrillation (AFIB) - Answer--no identifiable P wave
-AV node in control
