lOMoAR cPSD| 57629747
Nur455 exam 5 guide summer
, lOMoAR cPSD| 57629747
NUR 455 EXAM 5 GUIDE Sp26
**You are expected to complete all chapter readings. Some questions may not fit a proper category or fall under
multiple categories.
Chapter 22: Management of Patients with Arrhythmias and Conduction Problems
o ECG o Rhythm strip analysis- what is represented with:
P wave: Atrial depolarization or Atrial Contraction. Starts in SA Node and spreads through atria
to AV Node.
QRS complex: Ventricular Depolarization or Ventricular Contraction (Normal time interval is .06-
.1 seconds or 1-3 grid boxes on ECG strip)
T wave: Ventricular muscle repolarization (resting)
U wave: Repolarization of the Purkinji fibers. Only seen sometimes on the EKG.
PR interval: Time between SA Node and AV Node stimulation (atrial to ventricular
depolarization). Normal time interval is .12-.2 seconds or 3-5 grid boxes on ECG.
ST segment: Early ventricular repolarization (resting state). ST Elevation is where you will see
cardiac ischemia from MI or cardiac tamponade.
Prolonged QT Interval can turn into Torsades de Pointes
o Rhythm strip interpretation
o
, lOMoAR cPSD| 57629747
o Maze procedure o What is it?
Surgical procedure used to treat A-Fib. The surgeon creates a pattern (or maze) of scar tissue in the
atria using a scalpel or a device that delivers heat or cold to redirect the electrical impulses. This
is in contrast to an ablation which destroys the tissue causing the dysrhythmia.
o Patient education
Scar tissue formation is good and redirects the conduction that was causing the dysrhythmia so
the heart can resume its normal rhythm.
Nur455 exam 5 guide summer
, lOMoAR cPSD| 57629747
NUR 455 EXAM 5 GUIDE Sp26
**You are expected to complete all chapter readings. Some questions may not fit a proper category or fall under
multiple categories.
Chapter 22: Management of Patients with Arrhythmias and Conduction Problems
o ECG o Rhythm strip analysis- what is represented with:
P wave: Atrial depolarization or Atrial Contraction. Starts in SA Node and spreads through atria
to AV Node.
QRS complex: Ventricular Depolarization or Ventricular Contraction (Normal time interval is .06-
.1 seconds or 1-3 grid boxes on ECG strip)
T wave: Ventricular muscle repolarization (resting)
U wave: Repolarization of the Purkinji fibers. Only seen sometimes on the EKG.
PR interval: Time between SA Node and AV Node stimulation (atrial to ventricular
depolarization). Normal time interval is .12-.2 seconds or 3-5 grid boxes on ECG.
ST segment: Early ventricular repolarization (resting state). ST Elevation is where you will see
cardiac ischemia from MI or cardiac tamponade.
Prolonged QT Interval can turn into Torsades de Pointes
o Rhythm strip interpretation
o
, lOMoAR cPSD| 57629747
o Maze procedure o What is it?
Surgical procedure used to treat A-Fib. The surgeon creates a pattern (or maze) of scar tissue in the
atria using a scalpel or a device that delivers heat or cold to redirect the electrical impulses. This
is in contrast to an ablation which destroys the tissue causing the dysrhythmia.
o Patient education
Scar tissue formation is good and redirects the conduction that was causing the dysrhythmia so
the heart can resume its normal rhythm.
