Basic Dysrhythmias questions,with correct
answers,11
EKG paper is divided into small squares and larger squares - verified answers; Large squares
are defined by a dark line. They are 5 squares high and 5 squares long (0.20 seconds)
Small squares may be lines or may be dots within the dark lines. They are 0.04 seconds
every mark below EKG grid is 3sec
Artifact - verified answers; EKG waveforms from sources outside the heart
Interference seen on a monitor or EKG strip
4 causes
Patient movement (i.e. pt. with tremors)
Loose or defective electrodes (fuzzy baseline)
Improper grounding (60 cycle interference)
Faulty EKG apparatus
Normal PR and QRS interval lengths - verified answers; PR Interval: .12-.20 seconds
QRS Interval: < .12 seconds
Origin of Rhythms - verified answers; They are named for the structure of the heart where the
foci (a cell sending off an electrical impulse) is located that is producing the abnormal rhythm
Sinus (Sinus node)
Junctional (Area between the atria & ventricles)
, Ventricular (any cell in the ventricles)
Atrial (any cell in the atria)
AV Blocks (AV node blocking some or all of the passage of electricity through it)
Sinus Arrhythmia (SA) - verified answers; Normal except irregular
The difference between the fastest two heart beats (from 1 QRS to the next QRS) and the
slowest two heart beats is greater than .12 sec
Asystole - verified answers; No electrical activity
CODE BLUE
but it does arise from the SA node??
Pulseless Electrical Activity (PEA) - verified answers; Normal rhythm, but...No Pulse*
Electrical activity is present but there is no pulse, so the heart is not beating! Something has
happened to prevent the muscular tissue from responding to the electrical activity
(i.e. ↓↑ K+, hypothermia, Pneumothorax, cardiac tampanode, hypovolemia, drug overdose,
pulmonary or coronary thrombosis)
Rhythms arising from the SA Node - verified answers; Sinus Rhythm
Sinus Tachycardia
Sinus Bradycardia
Sinus Arrhythmia
Asystole
Pulseless Electrical Activity
Junctional rhythm - verified answers; Initiates somewhere between atria and ventricle.
PR interval will be less than normal or there will be no P wave
answers,11
EKG paper is divided into small squares and larger squares - verified answers; Large squares
are defined by a dark line. They are 5 squares high and 5 squares long (0.20 seconds)
Small squares may be lines or may be dots within the dark lines. They are 0.04 seconds
every mark below EKG grid is 3sec
Artifact - verified answers; EKG waveforms from sources outside the heart
Interference seen on a monitor or EKG strip
4 causes
Patient movement (i.e. pt. with tremors)
Loose or defective electrodes (fuzzy baseline)
Improper grounding (60 cycle interference)
Faulty EKG apparatus
Normal PR and QRS interval lengths - verified answers; PR Interval: .12-.20 seconds
QRS Interval: < .12 seconds
Origin of Rhythms - verified answers; They are named for the structure of the heart where the
foci (a cell sending off an electrical impulse) is located that is producing the abnormal rhythm
Sinus (Sinus node)
Junctional (Area between the atria & ventricles)
, Ventricular (any cell in the ventricles)
Atrial (any cell in the atria)
AV Blocks (AV node blocking some or all of the passage of electricity through it)
Sinus Arrhythmia (SA) - verified answers; Normal except irregular
The difference between the fastest two heart beats (from 1 QRS to the next QRS) and the
slowest two heart beats is greater than .12 sec
Asystole - verified answers; No electrical activity
CODE BLUE
but it does arise from the SA node??
Pulseless Electrical Activity (PEA) - verified answers; Normal rhythm, but...No Pulse*
Electrical activity is present but there is no pulse, so the heart is not beating! Something has
happened to prevent the muscular tissue from responding to the electrical activity
(i.e. ↓↑ K+, hypothermia, Pneumothorax, cardiac tampanode, hypovolemia, drug overdose,
pulmonary or coronary thrombosis)
Rhythms arising from the SA Node - verified answers; Sinus Rhythm
Sinus Tachycardia
Sinus Bradycardia
Sinus Arrhythmia
Asystole
Pulseless Electrical Activity
Junctional rhythm - verified answers; Initiates somewhere between atria and ventricle.
PR interval will be less than normal or there will be no P wave
