Exam (elaborations)
Cardiac Rhythms and Dysrhythmias Part 2 (1)
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Cardiac Rhythms and Dysrhythmias Part 2 (1)
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Cardiac Rhythms and Dysrhythmias Part 2Occurs when atrial impulses are completely blocked at the AV node and fail to reach the
ventricle; atria and ventricles are controlled by different and independent pacemakers -
ANS-Third Degree Heart Block
inferior or anteroseptal MI - ANS-Third Degree Heart Block Causes
dizziness, syncope, fatigue, exercise intolerance, HF - ANS-Third Degree Heart Block Clinical
Manifestations
atrial 60-100 bpm; ventricular 15-60 bpm - ANS-Third Degree Heart Block ECG Rate
no relation between P waves and QRS complexes; independent rhythms - ANS-Third Degree
Heart Block ECG P:QRS
immediate pacemaker therapy - ANS-Third Degree Heart Block Nursing Management
Extremely rapid, chaotic ventricular depolarization; heart does not pump - ANS-Ventricular
Fibrillation
death will follow within 4 minutes if the rhythm is not recognized and terminated and an effective
perfusing rhythm reestablished - ANS-Ventricular Fibrillation Death
severe myocardial ischemia or infarction; digitalis toxicity; hypothermia; hypo and hyperkalemia;
metabolic acidosis - ANS-Ventricular Fibrillation Causes
absence of a palpable or audible pulse, LOC, stop breathing - ANS-Ventricular Fibrillation
Clinical Manifestations
too rapid to count - ANS-Ventricular Fibrillation ECG Rate
pt has a pulse; treat with cardioversion - ANS-Stable Ventricular Tachycardia
pt does not have a pulse; treat with defibrillation - ANS-Unstable Ventricular Tachycardia
grossly irregular - ANS-Ventricular Fibrillation ECG Rhythm
immediate defibrillation - ANS-Ventricular Fibrillation Nursing Management
Rapid ventricular rhythm defined as three or more consecutive PVCs - ANS-Ventricular
Tachycardia
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