Cardiac Output & Perfusion
This formula is used to calculate cardiac output.
CO = HR × SV
This structure is the primary pacemaker of the heart and normally fires at 60–100 bpm.
SA node
What is your very first nursing action that must occur before treating any rhythm seen on the telemetry monitor.
assess the patient, confirm if artifact??
what wave does afib not have
P wave
This medication class blocks sympathetic stimulation and is used to control sinus tachycardia.
beta blockers
what is stroke volume?
volume of blood ejected by LV per contraction
This part of the conduction system acts as a backup pacemaker with a rate of 40–60 bpm.
AV node
To calculate heart rate on a 6-second rhythm strip, count R waves and multiply by this number.
10
Anticoagulants are prescribed in atrial fibrillation to prevent this complication.
stroke and/or embolism
what symptomatic heart rhythm is atropine given for. And what are the next steps if it does not work.
Symptomatic Sinus Bradycardia
Zoll vest temporary and then permanent pacemaker placed
what is cardiac output
volume of blood the heart pumps out per minute
These fibers wrap around the ventricles and can act as a pacemaker at 20–40 bpm if higher pacemakers fail.
Purkinje fibers
what is a normal QRS complex timeframe?
less than 0.12 seconds
This diagnostic test is performed prior to cardioversion to assess for atrial clots.
TEE
This IV medication must be pushed fast and followed immediately by a saline flush when treating SVT.
adenosine
what are the two functions of the heart? (___ +___ =)
electrical (conduction) and mechanical (pump)
what does a P wave indicate on an EKG reading
atrial depolarization
what is a normal P interval and T interval time frame?
P interval: 0.12 - 0.20 seconds
T interval: 0.36 - 0.44 seconds
what is the ABCDE treatment for afib
anticoagulants
beta blockers
calcium channel blockers
digoxin
electrocardioversion
Cardioversion delivers a synchronized shock on this part of the ECG.
R wave
what S&S of decreased cardiac output do you need to intervene quickly for.
hypotension, SOB, syncope, chest pain, lightheaded-dizzy, palpitations, diaphoresis
Electrical activity of the heart is translated into these 3 waveforms seen on telemetry or EKG.
P waves, QRS complexes, T waves
how many seconds is one box on a 6 second telemetry strip
0.04 seconds
what is the acronym for afib s&s and what does it stand for
"COLLAPSED"
Chest pain
Oxygen lower
Low BP
Lethargy
Anxiety
Palpitations, racing heart
SOB
Elevated HR
Dizziness, syncope
Digoxin must be held prior to cardioversion because it increases the risk of this lethal rhythm.
VFib