5 large boxes - 1 second
15 large boxes - 3 seconds
30 large boxes - 6 seconds
absolute refractory period - The minimum length of time after an action potential during
which another action potential cannot begin
-toilet theory
-problem when QT interval increases
Accelerated Idioventricular Rhythm - Regular Rhythm
Rate is 50-100
irregular P waves
Agonal -
Agonal - slow irregular rhythm with wide QRS that vary in morphology
-nearing death
Asystole - patient is dead
atrial depolarization - P wave
Atrial Fibrillation - NO DISTINGUISHED P
-electricity is going like a pinball then transmits to ventricle
-rhythm is irregular
-if >than 150bpm then a-fib RVR
Atrial Flutter - USUALLY REGULAR
atrial rate i.e. 3:1
P wave is flutter/sawtooth
Atrial or Supraventricular Tachycardia - umbrella term
rate >150
SVT if >150 and regular
A-fib with RVR if >150 and irregular
AV node intrinsic rate - 40-60
best lead for atrial rhythms - lead II
best lead for ventricular rhythms - V1