1) What is a normal sinus rhythm? a) Irregular heart rhythm b) Constant rhythm of 60-100 beats per minute with P waves present. c) Rhythm without visible P waves d) Rhythm with wide QRS complexes 2) What are the characteristics of sinus bradycardia? a) Faster than normal heart rate. b) Absence of P waves c) Rhythm with irregular QRS complexes d) Steady rhythm with less than 60 beats per minute 3) What identifies supraventricular tachycardia (SVT)? a) Rhythm of more than 150 beats per minute with visible P waves. b) Irregular rhythm with atrial fibrillation c) Regular rhythm with rate greater than 150 bpm and concealed P-waves d) Wide QRS complexes and visible P waves 4) What is the main characteristic of a first-degree AV block? a) Constant lengthening of the PR interval b) Absent QRS c) Irregular heart rhythm d) P waves dissociated from the QRS 5) What rhythm is characterized by disorganized electrical activity without a pulse? a) Asystole b) Pulseless electrical activity (PEA) c) Ventricular fibrillation d) Ventricular tachycardia 6) How is ventricular fibrillation recognized on an ECG? a) Regular P waves with wide QRS complexes b) Prolonged PR interval with irregular rhythm c) Chaotic activity with no discernible QRS complexes d) Constant rate of 60 bpm 7) Which rhythm requires immediate chest compressions and defibrillation? a) Ventricular fibrillation b) Asystole c) Third degree AV block d) Idioventricular rhythm 8) What defines a third-degree AV block? a) Heart rate greater than 100 bpm b) Irregular rhythm with inverted T waves c) Completely dissociated P waves and QRS d) Constantly lengthened PR interval 9) What does an asystole rhythm indicate on an ECG? a) Wide QRS complexes without P waves b) Regular rhythm with narrow QRS c) Inverted T waves with sinus activity d) Flat line without electrical activity 10) What rhythm requires the immediate use of atropine? a) Atrial fibrillation b) Idioventricular rhythm c) Symptomatic sinus bradycardia d) Ventricular tachycardia 11) What is the initial management of a second-degree AV block Mobitz II? a) Transcutaneous pacemaker b) Carotid massage c) Synchronized Cardioversion d) Epinephrine administration 12) What rhythm can quickly progress to ventricular fibrillation? a) Third-degree AV block b) Polymorphic Ventricular Tachycardia c) Asystole d) Sinus bradycardia 13) What is a common cause of pulseless electrical activity (PEA)? a) Hypoxemia b) Hyperglycemia 14) What characterizes a second-degree AV block Mobitz I (Wenckebach)?A. Hipoxemia a) Progressive lengthening of the PR interval until a QRS is skipped. b) Completely irregular rhythm and P waves unrelated to QRS 15) What does a wide QRS complex with a regular rhythm indicate? a) Supraventricular tachycardia b) Ventricular tachycardia 16) What is ventricular fibrillation (VF)? a) A condition where the heart's ventricles quiver instead of pumping blood effectively. b) A type of tachycardia caused by blocked coronary arteries. 17) How is atrioventricular block identified on an ECG? a) A flatline in all leads. b) Prolonged PR intervals or non-conducted P waves. 18) What rhythm is characterized by narrow QRS complexes and a rate above 150 bpm? a) Supraventricular tachycardia (SVT). b) Ventricular tachycardia (VT). 19) What is the initial treatment for ventricular tachycardia with a pulse? a) Immediate defibrillation b) Synchronized cardioversion c) Atropine administration d) Carotid massage 20) What does a first-degree AV block mean? a) A complete interruption of conduction between the atria and ventricles. b) A consistent delay in AV node conduction. 21) What rhythm is characterized by narrow QRS complexes and a rate above 150 bpm?ean? a) Atrial fibrillation b) Supraventricular tachycardia c) Second degree AV block d) Asystole 22) What name corresponds to the image? a) Ventricular fibrillation b) Ventricular Tachycardia 23) What type of atrial involvement is it? a) Atrial Fibrillation b) Atrial Flutter 24) Which heart block does the image belong to? a) Mobitz Type II heart block b) Mobitz Type I heart block c) Complete heart block d) First-Degree Heart Block 25) What title would you give to the image? a) Sinus Bradycardia b) Sinus Tachycardia c) Sinus Rhythm

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