Transmits impulses from the SA node to the AV node through the RA & LA
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AV node
• Slows conduction (40-60 beats/min)
• Physiologic delay allows atrial kick on floor of RA near tricuspid valve
Bundle of His
Bundle of cardiac muscle fibers that conducts the electrical impulses from the AV node in the
right atrium to the septum between the ventricles and then to the left and right ventricles.
bundle branches
Right and Left (Left anterior & Left posterior fascicles)
Purkinjie Fibers
Fibers from Bundle Branches imbedded into the ventricle walls.
indication of a flat line at any time in the duration of a series of waves
indicates no electrical activity at that particular moment
Nursing Responsibilities when theres changes in ECG rhythm
Print, measure, interpret and post rhythm strips per unit standard.
Get a 12 lead ECG for any rhythm changes.
Get a set of vital signs for any rhythm changes.
Know your unit standards and when to notify the MD.
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