EKG Rhythm Interpretation Packet 2024 UPDATE
GRADED A+
property of myocardial cells that allows them to fire without the nervous system
telling it to - ANSWER: automaticity
property of myocardial cells in which these cells fire at regular intervals - ANSWER:
rhythmicity
help ensure that the atria contract together as a unit and the ventricles contract
together as a unit - ANSWER: intercalated discs
from the SA node, the electrical impulse travels over to the left atrium through ____
____ - ANSWER: bachman's bundle
what is the purpose of the momentary pause at the AV junction? - ANSWER: - allows
for complete ventricular filling
- allows atria and ventricles to contract at different times
what is happening mechanically during diastole? - ANSWER: ventricular filling
what is happening electrically during diastole? - ANSWER: nothing
what is happening electrically during systole? - ANSWER: impulse is released from
the AV node throughout the ventricles
what is the difference between hard-wired and telemetry monitoring? - ANSWER: -
hard-wired means they are tied to wall
- telemetry is wireless/portable
bipolar limb leads - ANSWER: I, II, and III
unipolar limb leads - ANSWER: aVR, aVL, aVF
the limb leads use _____ electrodes to get _____ different views in the _____ plane -
ANSWER: - 4
-6
- frontal
where are the electrodes for Lead II placed? - ANSWER: - positive is placed on left
lower abdominal quadrant
- negative is placed on right shoulder
where are the electrodes for aVR placed? - ANSWER: - positive is on the right
shoulder
- negative is on the left lower abdominal quadrant
, EKG chest leads record activity in the _____ plane - ANSWER: horizontal
What are the 6 chest leads? These are are _____ leads - ANSWER: - V1, 2, 3, 4, 5, 6
- Unipolar
Leads I, aVL, V5, and V6 give you a/an _____ view of the heart - ANSWER: lateral
Leads II, III, and aVF give you a/an _____ view of the heart - ANSWER: inferior
Leads V1, V2, V3, and V4 give you a/an _____ view of the heart - ANSWER: anterior
taking a 3-lead system to mimic a chest lead - ANSWER: MCL1 lead
commonly used for monitoring along with lead II, V1, and V5 - ANSWER: MCL1 lead
MCL1 lead:
- _____ electrode placed over the 4th intercostal space just to the right of the
sternum - ANSWER: positive
MCL1 lead:
- _____ electrode placed on the 2nd intercostal space at mid-clavicular line on the
upper left chest or outer third of clavicle - ANSWER: negative
4 possible sites of origin for rhythms: - ANSWER: - sinus
- atrial
- junctional
- ventricular
beats that originate from locations other than the sinus node - ANSWER: ectopic
what does HISDEBS stand for? - ANSWER: - Hypoxia
- Ischemia or irritability
- Sympathetic stimulation
- Drugs
- Electrolyte disturbances
- Bradycardias
- Stretch
what is the paper speed of an EKG strip? - ANSWER: 25 mm/s
what is the duration of one small square on EKG paper? - ANSWER: .04s
what is the duration of one large square on EKG paper? - ANSWER: 0.20s
what are the 5 steps to naming a rhythm? - ANSWER: - rhythm
- rate
GRADED A+
property of myocardial cells that allows them to fire without the nervous system
telling it to - ANSWER: automaticity
property of myocardial cells in which these cells fire at regular intervals - ANSWER:
rhythmicity
help ensure that the atria contract together as a unit and the ventricles contract
together as a unit - ANSWER: intercalated discs
from the SA node, the electrical impulse travels over to the left atrium through ____
____ - ANSWER: bachman's bundle
what is the purpose of the momentary pause at the AV junction? - ANSWER: - allows
for complete ventricular filling
- allows atria and ventricles to contract at different times
what is happening mechanically during diastole? - ANSWER: ventricular filling
what is happening electrically during diastole? - ANSWER: nothing
what is happening electrically during systole? - ANSWER: impulse is released from
the AV node throughout the ventricles
what is the difference between hard-wired and telemetry monitoring? - ANSWER: -
hard-wired means they are tied to wall
- telemetry is wireless/portable
bipolar limb leads - ANSWER: I, II, and III
unipolar limb leads - ANSWER: aVR, aVL, aVF
the limb leads use _____ electrodes to get _____ different views in the _____ plane -
ANSWER: - 4
-6
- frontal
where are the electrodes for Lead II placed? - ANSWER: - positive is placed on left
lower abdominal quadrant
- negative is placed on right shoulder
where are the electrodes for aVR placed? - ANSWER: - positive is on the right
shoulder
- negative is on the left lower abdominal quadrant
, EKG chest leads record activity in the _____ plane - ANSWER: horizontal
What are the 6 chest leads? These are are _____ leads - ANSWER: - V1, 2, 3, 4, 5, 6
- Unipolar
Leads I, aVL, V5, and V6 give you a/an _____ view of the heart - ANSWER: lateral
Leads II, III, and aVF give you a/an _____ view of the heart - ANSWER: inferior
Leads V1, V2, V3, and V4 give you a/an _____ view of the heart - ANSWER: anterior
taking a 3-lead system to mimic a chest lead - ANSWER: MCL1 lead
commonly used for monitoring along with lead II, V1, and V5 - ANSWER: MCL1 lead
MCL1 lead:
- _____ electrode placed over the 4th intercostal space just to the right of the
sternum - ANSWER: positive
MCL1 lead:
- _____ electrode placed on the 2nd intercostal space at mid-clavicular line on the
upper left chest or outer third of clavicle - ANSWER: negative
4 possible sites of origin for rhythms: - ANSWER: - sinus
- atrial
- junctional
- ventricular
beats that originate from locations other than the sinus node - ANSWER: ectopic
what does HISDEBS stand for? - ANSWER: - Hypoxia
- Ischemia or irritability
- Sympathetic stimulation
- Drugs
- Electrolyte disturbances
- Bradycardias
- Stretch
what is the paper speed of an EKG strip? - ANSWER: 25 mm/s
what is the duration of one small square on EKG paper? - ANSWER: .04s
what is the duration of one large square on EKG paper? - ANSWER: 0.20s
what are the 5 steps to naming a rhythm? - ANSWER: - rhythm
- rate
