1) Ventricular fibrillation (VF) occurs when there are uncoordinated contractions within the ventricles of the heart. a) Verdadero  b) Falso 2) The primary cause of VF is________to the heart muscle, which causes hyperirritability in the cardiac______tissue. a) contractions - ventricles b) hypoxia - muscle c) hypoxia - ventricles 3) The rhythm___________________ is identified by the rate is usually greater than 180 beats per minute, and the rhythm generally has a very wide QRS complex. a) Ventricular Fibrillation  b) Supraventricular Tachycardia c) Fibrillation Atrial d) Pulseless Ventricular Tachycardia 4) The Pulseless Ventricular Tachycardia rhythm the patient will be pulseless and originates in the ventricles because are not effectively moving blood out of the heart, therefore, no cardiac output. a) Verdadero b) Falso 5) The lengthening of the PR interval is caused by a _______ in the electrical impulse from the atria to the ventricles through the __________. a) Block - AV node b) Block - Atria  c) Delay - AV node d) Delay - QRS Complex  6) The First-Degree Heart Block is also called________________is a disease of the electrical conduction system of the heart in which the _________ is lengthened beyond 0.20 seconds. a) Mobitz 1 or Wenckebach - QT interval b) First-degree AV block - PR interval c) Mobitz I or Wenckebach - QT interval d) First-degre AV bloock - PR interval 7) Second degree heart block which is also called _________ or Wenckebach is a disease of the electrical conduction system of the heart in which the has progressive prolongation until finally the atrial impulse is completely blocked and does not produce a _____________________. a) Mobitz 1 - QRS electrical impulse b) First-degree AV block - QT interval c) Wenckebach - QT interval d) First-degree AV block - QRS electrical impulse 8) One of the main identifying characteristics of second-degree AV block (Type 1) is that the atrial rhythm will be regular. a) Verdadero b) Falso 9) Second-degree AV block (Type 2) is a disease of the distal conduction system located in the ventricular portion of the _____________. a) Injury - myocardium b) Disease - heart c) Injury - heart d) Disease - myocardium 10) Select the types of bradyarrhythmia rhythms: a) Firts-Degree AV Block b) Second-Degree AV block Type I and II c) Third-Degree AV block d) First-Degree AV Block e) Third-Degre AV blockFirst-Degree AV Block f) Second-Degre AV block Type I and II 11) These symptoms occur more frequently with a heart rate >150 beats per minute: a) Shortness of air  b) Palpitation feeling in chest  c) nausea d) Dizziness  e) Loss of consciousness  f) Rapid breathing  12) Select the types of tachyarrhythmia rhythms: a) Atrial Fibrillation b) Ventricular Fibrillation c) Supraventricular Tachycardia d) Other tachycardias e) Atrial Flutter 13) _________ will usually present with atrial rates between ___________ per minute. a) Atrial Fibrillation - 200-300 beats b) Atrial Flutter - 240-350 beats c) Supraventricular Tachycardia - 240-350 beats d) Ventricular Fibrillation - 200-300 beats 14) The complicaion of atrial flutter rhythm is: Ineffective atrial contractions can lead to thrombus formation in the atria and rapid ventricular rates can cause decompensation and heart failure. a) Verdadero b) Falso 15) Select the most common symptoms the Atrial Fibrillation a) Palpitations or chest discomfort b) Loss of consciousness c) hypotension, light-headedness and possibly loss of consciousness d) shortness of air and possibly respiratory distress e) peripheral edema, jugular vein distention, and possibly pulmonary edema f) Rapid breathing 16) For the patient with unstable tachycardia due to a tachyarrhythmia, immediate cardioversion is recommended. Drugs are not used to manage unstable tachycardia. The appropriate voltage for cardioverting unstable atrial fibrillation is 120-200 J. a) Falso b) Verdadero 17) The monomorphic ventricular tachycardia and polymorphic ventricular tachycardia both of which are wide-complex __________tachycardias. a) QRS of < 0.12 second b) QRS of ≥ 0.12 second c) QRS of > 0.12 second 18) One commonly seen type of polymorphic ventricular tachycardia is ______________. a) wide complex b) PR interval c) Torsades de pointes d) QT interval 19) Select the causes of first-degree AV block: a) Myocardial infarction b) Hypoxemia (see more in infants and children) c) Cardiac surgery d) Medications that inhibit AV node conduction (amiodarone, beta-blockers, calcium channel blockers, digoxin) e) Myocarditis caused by infections 20) Identify which rhythm is shown in the image a) Second-Degree AV Block (Type 1) b) First-Degree Heart Block c) Atrial Fibrillation d) Second-Degree (AV) Heart Block (Type 2) e) Pulseless Ventricular Tachycardia

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