EKG 1
the P wave represents:
atrial depolarization
the outermost layer of the heart
what is regular rate and rhythm at 100-200 bpm
ventricular tachycardia
what is the term that refers to the atria contracting at an extremely rapid rate of 300 bpm
Atrial Flutter
what is depolarization of the atria
P wave
what is depolarization of the ventricles?
QRS complex
what is dysrhythmia?
alteration in the normal heart rhythm
what is a prolonged PR interval?
anything over 0.20 seconds
what is syncope
loss of consciousness
what do you measure for ventricular rate and rhythm?
R wave to R wave
in a 2nd degree AV block with 2:1 conduction, the PR interval
lengthens
what is the mediastinum
the space between the lungs in the middle of the chest
what is the term that refers to an ectopic site in the atria stimulates a premature contraction before the SA node can act
PAC
what is the term that means a condition when the heart is unable to pump out all of the blood that is returned to it, causing a backing up of blood in the vein leading to the heart?
congestive heart failure
what are the the Atrioventricular (AV) valves?
Tricuspid and mitral valves
what is repolarization of ventricles?
T wave
what is the complete absence of ventricular electrical activity?
Asystole
what is the correct term that refers to the atrial activity as rapid and chaotic is:
Atrial Fibrillation
what are the planes that a 12 lead EKG views?
Horizontal and vertical
what do muscle cells need in order to contract?
calcium
on EKG paper what is one small box represent?
.04 sec and 1 mm
where do PVCs originate from?
Ventricles
what is the PR interval in a 1st degree heart block?
greater than 0.2 seconds
what is the term that refers to a rapid abnormal rhythm from an ectopic site in the atria with a rapid onset
PAT (Paroxysmal atrial tachycardia)
what is a chaotic electrical activity with waveforms varying in size and shape
ventricular fibrillation