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Nursing 312 exam 4 with precise detailed solutions

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Exam (elaborations)

Nursing 312 exam 4 with precise detailed solutions

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9 pages

2024/2025

Institution NURS 312

Course NURS 312

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Nursing 312 exam 4 with precise detailed solutions

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Nursing 312 exam 4 with !| !| !| !| !|

precise detailed solutions !| !|

atrial rhythms - Correct answer ✔-usually are rapid rhythms that usurp the
!| !| !| !| !| !| !| !| !| !| !| !|

sinus

-only occasionally will be slow
!| !| !| !|

-reflect abnormal electrical impulse formation and conduction in the atria
!| !| !| !| !| !| !| !| !|

returning to sinus rhythm or slowing heart rate to more tolerable levels -
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Correct answer ✔Treatment of atrial rhythms are aimed at (converting)
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altered automaticity (ischemia, hypocalcemia, drug toxicity)
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triggered activity (hypoxia, hypomagnesemia, myocardial ischemia)
!| !| !| !| !|

reentry (hyperkalemia, myocardial ischemia) - Correct answer ✔Atrial
!| !| !| !| !| !| !| !|

rhythms result from !| !|

-matching upright Ps with a rate of >160 at rest !| !| !| !| !| !| !| !| !|

-no Ps at all, instead wavy or sawtooth baseline
!| !| !| !| !| !| !| !|

-P waves of 3 or more different shapes
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-premature abnormal P waves - Correct answer ✔atrial rhythm criteria
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impulse can originate in one or more irritable foci - Correct answer
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✔conduction in atrial rhythms !| !| !|

, -wandering atrial pacemaker/multifocal atrial tachycardia !| !| !| !|

-premature atrial contractions !| !|

-paroxysmal atrial tachycardia !| !|

-atrial flutter !|

-atrial fibrillation !|

-supraventricular tachycardia - Correct answer ✔atrial arrhythmias !| !| !| !| !| !|

wandering atrial pacemaker (WAP)/ multifocal atrial tachycardia (MAT) -
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Correct answer ✔-pacemaker site wanders between the sinus node, the atria
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and AV junction; although each impulse originates from a different focus,
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the rate usually remans within a normal range, but it can be slower or faster
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-conduction through the ventricles is normal !| !| !| !| !|

rate:

-WAP: mean rate <100 !| !| !|

-MAT: mean rate >100 !| !| !|

regularity (rhythm): slightly irregular !| !| !|

P wave: morphology changes from one complex to the next; at least 3
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different shapes !|

PRI: less than 0.20 seconds; may vary
!| !| !| !| !| !|

QRS: less than 0.12 seconds - Correct answer ✔stats of WAP and MAT
!| !| !| !| !| !| !| !| !| !| !| !|

WAP: usually none !| !|

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Uploaded on: July 19, 2025
Number of pages: 9
Written in: 2024/2025
Type: Exam (elaborations)
Contains: Questions & answers

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