Updated Dysrhythmia Exam Questions and Answers, Exams of Cardiology

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Updated Dysrhythmia Exam

Questions and Answers 100%

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David Mungai [Date] [Course title]

Updated Dysrhythmia Exam Questions

and Answers 100% Pass | Graded A+

What is the flow of conduction in the heart? - Answer>> SA Node --> AV Node --> Bundle of His --> Purkinje fibers Identify the parts of the conduction system - Answer>> Left side: SA node, AV node, Right bundle branch Right side: Bundle of His, Left bundle branch, Left anterior division, Left posterior division In which AV block should we use Atropine with caution? - Answer>> 2nd degree TYPE 2 What is the special quality of the heart in relation to other muscles in the body? - Answer>> The heart generates its own electrical impulses What is the normal HR when the SINUS node is in charge of heart conduction? - Answer>> 60-100 bpm What is the normal HR when the AV node is in charge of heart conduction? - Answer>> 40-60 bpm What is the normal HR when the Purkinje Fibers is in charge of heart conduction? - Answer>> 20-40 bpm What does the P-wave represent? - Answer>> Atrial depolarization What does the QRS complex represent? - Answer>> Ventricular depolarization

RRT and PCP or Code 12-lead EKG Cardiac enzymes Patent IV Initial Interventions for ST elevation - Answer>> M: morphine O: oxygen N: nitroglycerin A: aspirin

• prepare for Cath lab 6 Basic Steps for Rhythm Interpretation - Answer>> HR Rhythm P-wave P-R interval QRS width Other findings Effects of Dysrhythmias on CO - Answer>> CO=HR X SV Dysrhythmias decrease CO Atrial Kick comprises 30% of CO ST Segment - Answer>> Elevation: myocardial infarction/injury Depression: myocardial ischemia Normal Sinus Rhythm - Answer>> Regular 60-100 bpm P-waves normal PR: normal QRS: normal Sinus Bradycardia - Answer>> Regular

Less than 60 bpm P-waves normal PR: normal QRS: normal Causes: may be normal; meds; vagal stimulation Symptomatic: RRT, apply pacer pads, atropine Asymptomatic: notify MD, monitor, review meds Sinus Tachycardia - Answer>> Regular Greater than 100 bpm P-waves normal PR: normal QRS: normal Causes: pain, fever, anxiety, dehydration, exercise, caffeine Treat the cause Sinus Arrhythmia - Answer>> Like NSR but irregular rhythm Irregular 60-100 bpm P-waves normal PR: normal QRS: normal Causes: sleeping (inspiration increases HR; expiration decreases HR) No interventions

Symptomatic: RRT, 12-lead EKG, crash cart, pads and leads, O2, patent IV Asymptomatic: notify MD, new/historical, 12-lead EKG if rhythm change, controlled/uncontrolled Treatment: A, B, 3C, D

• Anticoagulants, beta blockers, calcium channel blockers, cordarone, cardio version, digoxin Atrial Flutter - Answer>> Regular OR irregular Rate: atrial (over 250); ventricular controlled (under 100); ventricular uncontrolled (over 100) P-waves: sawtooth or flutter waves PR interval: N/A QRS: normal Symptomatic: RRT, 12-lead EKG, crash cart, pads and leads, O2, patent IV Asymptomatic: notify MD, new/historical, 12-lead EKG if rhythm change, controlled/uncontrolled Treatment: A, B, 3C, D
• Anticoagulants, beta blockers, calcium channel blockers, cordarone, cardio version, digoxin Premature Atrial Contractions - Answer>> NOT RHYTHM, IT'S A FINDING Regular except for PAC Rate usually normal P-waves look different PR interval: normal QRS interval: normal

Causes: can occur in normal hearts, irritability, electrolyte imbalance, hypoxia, stress, stimulants Interventions: check labs (electrolytes); vital signs (O2 stats), identify and treat cause Can be a precursor to a more critical rhythm Supraventricular Tachycardia - Answer>> Regular Over 100 bpm P-waves hidden and merged with T-waves PR interval: cannot measure QRS: normal Causes: digoxin toxicity, stimulants, caffeine, alcohol, anxiety, hyperthyroidism, mitral valve disease, COPD, albuterol Unstable: cardioversion; electrical and synchronized or adenosine Stable: vasovagal maneuvers; adenosine, beta blockers, calcium channel blockers, digoxin Atrial Tachycardia - Answer>> Regular 140-250 bpm P-waves ectopic PR interval: if measurable, short QRS: normal Causes: digoxin toxicity, stimulants, caffeine, alcohol, anxiety, hyperthyroidism, mitral valve disease, COPD, albuterol Unstable: cardioversion; electrical and synchronized or adenosine

Intrinsic Pacemakers - Answer>> Indications for Cardiac Pacing - Answer>> Types of Pacemakers - Answer>> Right Atrial Pacing - Answer>> Right Ventricular Pacing - Answer>> Atrial and Ventricular Pacing - Answer>> Atrial, RV, and LV (Bi-ventricular) Pacing - Answer>> Pacemaker Connection - Answer>> Pacemaker Output - Answer>> Pacemaker Capture - Answer>> Pacemaker Sensitivity - Answer>> Pacemaker Problems - Answer>> How to analyze a paced strip - Answer>>