Interpreting Strips
What is a ventricular rate?
The ventricular rate is when the ventricles are contracting and pumping blood which is represented by the R wave.
If there is an irregular rhythm how would you calculate the heart rate?
Take the smallest number over 1500, then the largest number over 1500, then you add the two answers and divide it by two.
How do the QRS look in ventricular rhythm?
they look wide and funny
What must be done immediately when pt is in ventricular fib.
Defibrillation
In a Holter Monitor how many electrodes are attached to the pt's body?
5 or more electrodes
What are the three methods for calculating a heart rate?
6 second strip, memory, and Little blocks.
How do you determine an irregular rhythm?
R-R interval vary by more than 2 small blocks
Which rhythm sends out a vertical spike?
pacemaker rhythm
Which rhythm is the result of a severely impaired heart which only manages an occasional beat
Agonal rhythm
When you do a Holter Monitor, how long do you wear the electrodes?
24 hours usually
When determining if a heart rhythm is regular the R-R must be than less ____ little blocks in difference.
EX: the first R-R is 17 is the Second R-R which is 20 considered regular?
1-2 little blocks
What do you a rhythm interrupted with a premature beat?
Regular but Interrupted
What are some causes of having a PVC?
heart disease, hypoxia and hypokalemia
Which rhythm is the result of massive cardiac damage & the higher pacemakers have failed
idioventrical rhythm
How do you calculate a target heart rate?
220-(your age) =____ then you take 85% of that and there is your answer
When determining a heart rhythm what are the 5 things you need to look at?
Regularity, Rate, P Wave, PRI, and QRS
What represents the atrial rate?
P wave
Whats the regularly and rate of an agonal rhythm?
irregular and <20 usually
which rhythm gives a "twisting" appearance?
torsades de pointes
With the holter moniter how do you continue with your day
regulary
If the heart rate of a person is 75 (and everything else like the P waves and etc are normal) and then all of a sudden there isn't a beat, what is this called?
A regular rhythm but interrupted with a pause
In some dysrhythmias which two things can vary?
Atrial and Ventricular rates
Which rhythm is the same as IVR, but the rate is 40-60?
accelerated idioventricular rhythm (AIVR)
what can pacemaker rythyms be used for
can be used to pace the atria, ventricles or both
What is the single most important piece of equipment in performing a stress test?
a 12 lead EKG machine