Advanced – Dysrhythmias Practice Exam Questions 2025 |100% Correct|

Advanced – Dysrhythmias Practice Exam Questions 2025 |100% Correct| -Antidysrhythmic Drugs (slow ventricular conduction or to convert the AF to NSR) - calcium channel blockers, beta-blockers, digoxin -Anticoagulants (benefits of preventing stroke v. risk of bleeding) -heparin, warfarin, lovenox (prevent strokes associated with AF) -Percutaneous radio frequency catheter ablation *Ans*What does treatment look like for atrial fibrillation? -anxiety, pain, stress, fever, anemia, hypoxemia, hyperthyroidism. -drugs such as epinephrine, atropine, caffeine, alcohol, nicotine, cocaine, aminophylline, and thyroid medications may increase HR. -a compensatory response to decreased CO or BP as occurs in dehydration, hypovolemic shock, myocardial infarction, infection, and heart failure. *Ans*What are possible causes for sinus tachycardia? -assess vital signs at least every 4 hours and as needed. -monitor for cardiac dysrhythmias -evaluate and document the patient's response to dysrhythmias. -encourage patient to notify the RN when chest pain occurs. -assess chest pain (ex: location, intensity, duration, radiation, and precipitating and alleviating factors) -provide antidysrhthmic therapy according to unit policy (ex: anti-dysrhythmic medication, cardioversion, or defibrillation) as appropriate. -monitor and document patient's response to antidysrhythmic medications or interventions. -monitor appropriate lab values (ex: cardiac enzymes, electrolyte levels) -monitor patient's activity tolerance and schedule exercise/rest periods to avoid fatigue -observe for respiratory difficulty (ex: shortness of breath, rapid breathing, labored respirations) -promote stress reduction -offer spiritual support to the patient and/or family, as appropriate. *Ans*What does care for a patient with dysrhythmias look like? -chest discomfort, pressure, or pain which may radiate to the jaw, the back ,or the arm. -restlessness, anxiety, nervousness, confusion -dizziness, syncope -palpitations (tachy) -change in pulse strength, rate, and rhythm -pulse deficit -shortness of breath, dyspnea -tachypnea -pulmonary crackles -orthopnea -S3 or S4 heart sounds -jugular venous distention -weakness, fatigue -pale, cool, skin; diaphoresis -N/V -decreased urine output -delayed capillary refill -hypotension *Ans*What are key features of sustained tachydysrhythmias and bradydysrhythmias? 1 *Ans*Class ___________ antidysrhythmics are membrane-stabilizing agents used to decrease automaticity. Three subclassifications which include type 1A drugs which moderately slow conduction and prolong depolarization, prolonging the QT interval. Type 1B shorten depolarization. Type 1C slow conduction and widen the QRS complex. 1A *Ans*Type _________ anti-dysrhythmic drugs moderately slow conduction and prolong depolarization, prolonging the QT interval. Used to treat supraventricular and ventricular premature beats and tachydysrhythmia. Ex: procainamide hydrochloride (pronestyl) 1B *Ans*Type _______ anti-dysrhythmic drugs shorten depolarization. These are used to treat or prevent ventricular premature beats, ventricular tachycardia (VT), and ventricular fibrillation (VF). Ex: lidocaine and mexiletine hydrochloride. 1C *Ans*Type ________ anti-dysrhythmic drugs slow conduction and widen the QRS complex. These are used primarily to treat or prevent recurrent, life-threatening ventricular premature beats, VT, and VF. Ex: flecainide acetate (Tambocor) and propafenone hydrochloride (Rythmol). 2 *Ans*Class _________ antidysrhythmics control dysrhythmias with excessive beta-adrenergic stimulation by competing for receptor sites and thereby decreasing heart rate and conduction velocity. Ex: beta-adrenergic blocking agents such as propranolol (inderal) and esmolol hydrochloride (Brevibloc). Treat or prevent supra ventricular and ventricular premature beats and tachydysrhythmias. 3 *Ans*Class ________ antidysrhythmics lengthen the absolute refractory period and prolong depolarization and the action potential duration of ischemic cells. Ex: amiodarone (Cordarone) and ibutilide (Corvert). Used to treat or prevent ventricular premature beats, ventricular tachycardia, and ventricular fibrillation. 4 *Ans*Class _________ antidysrhythmics slow the flow of calcium into the cell during depolarization, thereby depressing the automaticity of the SA and AV nodes, decreasing the heart rate, and prolonging the AV nodal refractory period and conduction. Ex: calcium channel blockers verapamil HCl. Used to treat supra ventricular tachycardia (SVT) and atrial fibrillation, atrial flutter. 48 *Ans*If a patient with VT is taking digoxin, the drug is withheld for up to _______ hours before an elective cardioversion because it increases ventricular irritability and puts the patient at risk for VF after the countershock. 60-100, normal, one, 0.12-0.20, .04-.10 *Ans*Normal Sinus Rhythm is the rhythm originating from the SA node that meets these ECG criteria: Rate: _______________ bpm Rhythm: atrial and ventricular rhythms _________________. P waves: present, consistent configuration, ___________ P-wave before each QRS complex. PR Interval: ______________ second and constant. QRS Interval: ____________ second and constant