Heart Basics
Name the 2 upper chambers of the heart.
Right atrium and left atrium
Name the outermost layer of the heart wall.
Epicardium
The rate of sinus bradycardia.
Less than 60 bpm
Length is seconds of 1 small square.
0.04 seconds
The normal rhythm of the heart.
Sinus
Name the 2 lower chambers of the heart.
Right ventricle and left ventricle.
Name the innermost layer of the heart wall.
Endocardium
The rate of sinus tachycardia.
More than 100 bpm
Several waveforms together.
Complex
A rhythm that begins in the AV bundle.
Junctional rhythm
Name 2 semilunar valves.
Pulmonic and aortic.
Name the 2 atrioventricular valves.
Tricuspid valve and bicuspid (mitral) valve.
Normal QRS duration.
Less than 0.11 seconds
Rounded and precedes the QRS complex.
P wave
# of R waves x 10=ventricular rate
6 second method
Name the primary pacemaker of the heart.
SA node
Blood pumped into the ventricles because of atrial contraction.
Atrial kick
# of R waves x 10=ventricular rate
6 second method
Height of standard callibration.
10mm
The 3 premature beats.
PACs, PJCs, PVCs
Force exerted by blood against the arterial walls.
Blood pressure
Decreased supply of oxygenated blood.
Ischemia
Delivery of electrical current across the heart.
Defibrillation
Total absence of ventricular electrical activity.
Asystole
Rhythm beginning in the AV bundle.
Junctional rhythm