Measurements
What does the horizontal axis of an ecg strip represent
Time
How do you measure atrial regularity
P to P starting on the left and continuing through the strip
I am a regular rhythm, with a rate between 60-100, my PR Interval and QRS Interval are normal
What is Sinus Rhythm
The period of time in the heart when the chamber is contracting and blood is being ejected - 1/3 oft he cardiac cycle
What is Systole
This area connects the AV Node with the bundle branches
Bundle of His
What is the time measurement of 1 small baby box?
0.04 seconds
How do you measure ventricular regularity
R to R starting at the left going through the strip to the right
I am a regular rhythm, I am less than 60 beats per minute, my PR Interval and QRS Interval are normal
What is Sinus Bradycardia
The heart has how many atria and how many ventricles
2 of each
This area conducts electrical impulses from the bundle of his to the purkinje fibers
What are the Bundle Branches
What is a normal PR Interval
How many baby boxes difference can it be to still be considered ventricular regular
less than 3 baby boxes
I am a irregular rhythm, my rate is usually 60-100, my PR Interval and QRS Interval are WNL
What is Sinus Arrythmia
What side of the heart provides pulmonary circulation
the right side
The inherent pacemaker of this area is 20-40
What are the Purkinje Fibers
What is a normal QRS Interval
less than 0.10 seconds
How fast do you give atropine
less than 1 minute
I am a failure of the SA node to discharge an impulse, there is a pause, and the underlying regular rhythm does not resume on time
What is a Sinus Arrest
The percentage of blood pumped out of a ventricle with each contraction-normally 50-65%
What is the ejection fraction
This area is the primary pacemaker of the heart
the SA node
Where do you measure the PR Interval from?
From the beginning of the P wave to where the QRS complex leaves the baseline
How do you tell if your patient is symptomatic with a rhythm change
•Mental status changes
•Breath sounds changes
•Increased effort of breathing
•Skin temperature
•Skin Color
•Diaphoresis
•Urine output
•Heart Tones
•Chest pain
•Restlessness
•Hypotension
The impulse generated in the SA node is blocked as it exits and conduction does not spread through the atria. There is a pause but the underlying rhythm resumes on time.
What is Sinus Block
What nervous system increases heart rate?
The sympathetic system
This area receives the impulse from the SA node and delays it to the Bundle of His
What is the AV Node