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AV node rate
40-60 bpm
SA node rate
60-100 bpm
Purkinje fibers rate
20-40 bpm
PR interval is from _ to _?
beginning of P wave to beginning of Q wave
QRS interval is from _ to _?
beginning of Q to end of S
QT interval is from _ to _?
beginning of Q to end of T
PR interval normal dura&on
0.12-0.20 s
QRS normal dura&on
0.04-0.12 s
QT interval normal dura&on
0.36-0.44
Normal Sinus Rhythm (NSR)
Cause and treatment for NSR?
N/A
None
Sinus Bradycardia
, AD
Cause and treatment for sinus brady?
Normal for athletes
None if not symptoma&c; atropine if symptoma&c
Sinus tachycardia
Cause and treatment for sinus tachy?
Anxiety
Treat the anxiety (have pt calm down)
NSR with 1 PAC
Cause and treatment for PACs?
Anxiety
Monitor it
Atrial Fibrilla&on with ventricular response of 80 (Afib)
Cause and treatment of Afib?
MI
Amiodarone
Aflu9er
Cause and treatment of aflu9er?
HTN
metropolol
SVT
Rate > 150
AD
Cause and treatment of SVT?
Anxiety
Vagal s&mula&on
First Degree Heart Block
Cause and treatment of 1st degree HB?