quiz #5 cardiac and GI inflammation Flashcards
(16 cards)
what is the most common irreg irreg rhythm
Afib
what does the PR interval represent and how long should it be
represents atrial depolarization and should be 0.12-0.20 seconds
how long should the QRS complex be
less than 0.1 seconds
what is the natural pacemaker of the heart
the SA node
what is a normal P to QRS ration
One to one
how could you tell if it is sinus bradycardia on an ECG strip
if everything is normal except the contractions per minute is low
What meds would be used to fix sinus bradycardia
-Atropine (anticholinergic)
-Epinephrine
-Dopamine
what is the main course of action when trying to treat someone with sinus tachycardia
trying to determine why their heart is beating fast and then treat that cause (since usually something is causing it)
what are the 4 most common atrial arrhythmias
-Afib
-Atrial flutter
-premature atrial contractions
-Supraventricular tachycardia
what are the 6 characteristics of afib
very fast atria rate
irregular irregular rhythm
no identifiable P waves
QRS complex can be narrow or wide
how much cardiac output do you loose because of AFib
15-30%
what are the main ways a fib is managed
ABCD
Anticoagulant
Beta blocker
Cardioversion
Digoxin
what is the PR segment
from the beginning of the P wave to the beginning of the QRS complex right as it starts to go down
What length of time is one big box on an ECG
0.2 seconds
what lenght of time does one small box represent on an ECG
0.04 seconds
how could you determine ventricular rate
count the number of big boxes between R waves and then divide that into 300 or count the number of small boxes and divide by 1500
