Dysrhythmias (Part 2) Test Questions with 100% Complete Answers, A+
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Course
Dysrhythmias
Institution
Dysrhythmias
Dysrhythmia - cORRECT sOLUTION Any disorder of the heart beat or heart rhythm.
Cardiac output is impaired.
Cellular oxygenation is then also impaired
Electrical problem will definitely effect the mechanical but a mechanical problem may not effect the electrical.
Explaining dysrhythmias - cO...
Dysrhythmias (Part 2) Test Questions
with 100% Complete Answers, A+
Dysrhythmia - cORRECT sOLUTION Any disorder of the heart beat or heart
rhythm.
Cardiac output is impaired.
Cellular oxygenation is then also impaired
Electrical problem will definitely effect the mechanical but a mechanical problem
may not effect the electrical.
Explaining dysrhythmias - cORRECT sOLUTION -Classified to their site of origin
-SA node atrial tissue, AV node, junctional tissue (tissue around AV node), and
ventricular tissue
-Caused by a disturbance in impulse formation or by conduction delays or blocks
Tachydysrhythmias - cORRECT sOLUTION -HR >100
-Shorten diastolic time (filling of vent. so not enough to push out) and coronary
perfusion time.
-Increase work of heart, increase myocardial O2 demand
Bradydysrhythmias - cORRECT sOLUTION -Heart rate <60
-Rate too slow to provide adequate cardiac output. (Doesn't give body what it
needs fast enough)
,Premature complexes - cORRECT sOLUTION -Occurs when a cell OTHER
THAN THE SA NODE becomes irritable and fires an impulse before the next
sinus complex
-Can be atrial, junctional, ventricular
-If frequent can cause decrease CO
Paroxysmal - cORRECT sOLUTION -Rhythm is intermittent (self limiting and
ends on it's own - can be A.Fib)
-Initiated be a premature beat (i.e. PAC, PVC)
-Resolves without intervention (self limiting)
***Symptoms commonly seen with dysrhythmias*** - cORRECT sOLUTION -
Hypotension*
-Dizziness/Syncope
-SOB
-Chest pain
-Palpitations
-Weakness and fatigue
-Anxiety or restlessness
-Diaphoresis
-Pale, cool skin
-Delayed cap refill
-Decreased urine output
Can be very vague like just feeling tired/fatigued
A sign of decreased perfusion is a symptom of dys.
, normal sinus rhythm - cORRECT sOLUTION refer to notes for helpful chart
Sinus bradycardia - cORRECT sOLUTION -All the characteristics of NSR except
heart rate is LESS than 60BPM
(Can be normal in a conditioned athlete or long term BB/anxiety drug use)
-Treat ONLY if the patient is symptomatic
Atropine (anticholinergic - Increases HR by working on the nervous system)
Sinus tachycardia - cORRECT sOLUTION -All of the characteristics of NSR
except a heart rate GREATER than 100 bpm
-Causes:
Anxiety, fright, stress
Exercise
Pain, fever
Alcohol ingestion (even if just sitting on couch)
Hypovolemia
Hypoxemia
Meds: caffeine, catecholamines, atropine, nicotine, thyroid meds, dopamine
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