Dysrhythmias (Part 2) Questions With Complete Solutions
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Course
Dysrhythmias
Institution
Dysrhythmias
Dysrhythmia correct answer: 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 correc...
Dysrhythmias (Part 2) Questions With Complete Solutions
Dysrhythmia correct answer: 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 answer: -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 answer: -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 answer: -Heart rate <60
-Rate too slow to provide adequate cardiac output. (Doesn't give body what it needs fast enough)
Premature complexes correct answer: -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 answer: -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 answer: -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 answer: refer to notes for helpful chart
Sinus bradycardia correct answer: -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) -Causes:
Vagal stimulation (cough/strain w/ BM) temporary
Beta Blockers
Antianxiety meds
Conditioned athlete
-Treat ONLY if the patient is symptomatic
Atropine (anticholinergic - Increases HR by working on the nervous system)
Sinus tachycardia correct answer: -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
-Treat ONLY if patient is symptomatic
-Treat the CAUSE! (ie. anxiety=antianxiety med, pain=pain meds)
Keep assessing b/c something is going on even if you don't see it
yet
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