identify and label PR interval, QRS duration, QT interval, and ST segments; identify normal
conduction of the heart; interpret sinus, atrial, junctional, heart blocks, and ventricular
arrhythmias; identify initial ACLS treatment or monitor tech escalation; apply arrhythmia
interpretation to clinical practice.
SA Node - pacemaker of the heart
60-100 beats/min
PWave - 0.06-0.12 Atrial depolarization
PR Interval - 0.12-0.20 Start of atrial depolarization to start of ventricle depolarization (qrs)
Measure beginning of p wave to beginning of qrs
QRS: 0.06-0.12 Ventricle depolarization
TWave - Repolarization
QT Interval - 0.36-0.44 time required for ventricular repol and depol (contract and rest) measure
beginning of QRS to end of T wave
ST segment Early part of ventricular repol measure end of QRS to beginning of T wave
ST interval measure end of QRS to end of T wave
, Sinus Brady - Atropine 0.5mg - may repeat up to 3 mg, transcutaneous pacing if needed
A Fib - irregular, no p waves - 110-160
A Flutter - Sawtooth pattern with p waves
Heart Blocks:
1st Degree - PR interval long but regular if R is far from P you have a first degree
2nd Degree Type 1- P wave keeps getting longer then QRS is dropped
2nd Degree Type 2 - PR interval regular before QRS is dropped
3rd Degree - No relation between p and qrs = many p waves not many qrs
conduction of the heart; interpret sinus, atrial, junctional, heart blocks, and ventricular
arrhythmias; identify initial ACLS treatment or monitor tech escalation; apply arrhythmia
interpretation to clinical practice.
SA Node - pacemaker of the heart
60-100 beats/min
PWave - 0.06-0.12 Atrial depolarization
PR Interval - 0.12-0.20 Start of atrial depolarization to start of ventricle depolarization (qrs)
Measure beginning of p wave to beginning of qrs
QRS: 0.06-0.12 Ventricle depolarization
TWave - Repolarization
QT Interval - 0.36-0.44 time required for ventricular repol and depol (contract and rest) measure
beginning of QRS to end of T wave
ST segment Early part of ventricular repol measure end of QRS to beginning of T wave
ST interval measure end of QRS to end of T wave
, Sinus Brady - Atropine 0.5mg - may repeat up to 3 mg, transcutaneous pacing if needed
A Fib - irregular, no p waves - 110-160
A Flutter - Sawtooth pattern with p waves
Heart Blocks:
1st Degree - PR interval long but regular if R is far from P you have a first degree
2nd Degree Type 1- P wave keeps getting longer then QRS is dropped
2nd Degree Type 2 - PR interval regular before QRS is dropped
3rd Degree - No relation between p and qrs = many p waves not many qrs
