Basic Dysrhythmias Questions and Answers (Basic A Dysrhythmia)
Study online at https://quizlet.com/_h666ge
1. EKG paper is divided into small squares and Large squares are defined by a dark line.
larger squares 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
2. Artifact 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 base-
line)
Improper grounding (60 cycle interfer-
ence)
Faulty EKG apparatus
3. Normal PR and QRS interval lengths PR Interval: .12-.20 secondsQRS Interval: <
.12 seconds
4. Origin of Rhythms They are named for the structure of the
heart where the foci (a cell sending off an
electrical impulse) is located that is produc-
ing the abnormal rhythm
Sinus (Sinus node)
Junctional (Area between the atria & ventri-
cles)
Ventricular (any cell in the ventricles)
Atrial (any cell in the atria)
, Basic Dysrhythmias Questions and Answers (Basic A Dysrhythmia)
Study online at https://quizlet.com/_h666ge
AV Blocks (AV node blocking some or all of
the passage of electricity through it)
5. Sinus Arrhythmia (SA) 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
6. Asystole No electrical activity
CODE BLUE
but it does arise from the SA node??
7. Pulseless Electrical Activity (PEA) Normal rhythm, but...No Pulse*
Electrical activity is present but there is no
pulse, so the heart is not beating! Some-
thing has happened to prevent the muscu-
lar tissue from responding to the electrical
activity
(i.e. “‘K+, hypothermia, Pneumothorax, car-
diac tampanode, hypovolemia, drug over-
dose, pulmonary or coronary thrombosis)
8. Rhythms arising from the SA Node Sinus Rhythm
Sinus Tachycardia
Sinus Bradycardia
Sinus Arrhythmia
Asystole
Pulseless Electrical Activity
9. Junctional rhythm Initiates somewhere between atria and
ventricle.
Study online at https://quizlet.com/_h666ge
1. EKG paper is divided into small squares and Large squares are defined by a dark line.
larger squares 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
2. Artifact 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 base-
line)
Improper grounding (60 cycle interfer-
ence)
Faulty EKG apparatus
3. Normal PR and QRS interval lengths PR Interval: .12-.20 secondsQRS Interval: <
.12 seconds
4. Origin of Rhythms They are named for the structure of the
heart where the foci (a cell sending off an
electrical impulse) is located that is produc-
ing the abnormal rhythm
Sinus (Sinus node)
Junctional (Area between the atria & ventri-
cles)
Ventricular (any cell in the ventricles)
Atrial (any cell in the atria)
, Basic Dysrhythmias Questions and Answers (Basic A Dysrhythmia)
Study online at https://quizlet.com/_h666ge
AV Blocks (AV node blocking some or all of
the passage of electricity through it)
5. Sinus Arrhythmia (SA) 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
6. Asystole No electrical activity
CODE BLUE
but it does arise from the SA node??
7. Pulseless Electrical Activity (PEA) Normal rhythm, but...No Pulse*
Electrical activity is present but there is no
pulse, so the heart is not beating! Some-
thing has happened to prevent the muscu-
lar tissue from responding to the electrical
activity
(i.e. “‘K+, hypothermia, Pneumothorax, car-
diac tampanode, hypovolemia, drug over-
dose, pulmonary or coronary thrombosis)
8. Rhythms arising from the SA Node Sinus Rhythm
Sinus Tachycardia
Sinus Bradycardia
Sinus Arrhythmia
Asystole
Pulseless Electrical Activity
9. Junctional rhythm Initiates somewhere between atria and
ventricle.
