Download Telemetry Exam: Understanding Cardiac Rhythms and Dysrhythmias and more Exams Nursing in PDF only on Docsity! Telemetry (EXAM 1) 31 Questions with Verified Answers What do the SA & AV nodes contract? - CORRECT ANSWER SA-->AV=atrial contraction AV-->bundle of HIS-->purkinje fibers=ventricular contraction Normal intervals - CORRECT ANSWER *memorize these* PR: .12-.2 QRS: .04-.12 QT: .34-.43 BPM when different nodes are in control - CORRECT ANSWER SA: 60-100 AV: 40-60 HIS-Purkinje: 20-40 How many seconds are the squares worth on ECG paper? - CORRECT ANSWER small square: .04 large square: .20 5 large squares: 1.0 1 strip: 6.0 Questions to ask when reading ECG - CORRECT ANSWER 1. is there a P for every QRS? 2. does it walk out? 3. what are the intervals? 4. what is the rate/rhythm? How do you treat dysrhythmias? - CORRECT ANSWER based upon symptoms no symptoms=no treatment Sinus Bradycardia - CORRECT ANSWER <60bpm -walks out -SA node in control -causes: hypoxia, hypothermia, sleep, athletes, meds -symptoms: syncope, chest pain, hypotension, SOB, diaphoresis -treatment: atropine, underlying cause Sinus Tachycardia - CORRECT ANSWER >100bpm -walks out -SA node in control -causes: fever, anemia, hypotension, pulmonary embolism, MI -symptoms: dizzy, syncope, SOB, diaphoresis, anxiety, palps -treatment: underlying cause, vagal maneuvers, meds Atrial fibrillation (AFIB) - CORRECT ANSWER -no identifiable P wave -AV node in control -does not walk out -causes: cardiomyopathy, pericarditis, HTN, CAD, cardiac surgery -symptoms: palps, fatigue, SOB, dizziness, chest pain -treatment: meds, cardioversion (eval for clots 1st), anticoagulants Atrial flutter - CORRECT ANSWER -Sawtooth pattern -AV node in control -one random cell firing -does not walk out -causes: acute MI, chest surgery, mitral valve disease, digoxin toxicity -symptoms: palps, SOB, dizziness, chest pain/discomfort -treatment: meds, cardioversion, anticoagulants Supraventricular tachycardia (SVT) - CORRECT ANSWER -AV node in control -one cell firing rapidly -QRS can be narrow or wide -can look similar to sinus tach -causes: infection/fever, hypovolemia, hypoxia, ischemia, drug toxicity -symptoms: dizziness, syncope, SOB, diaphoresis, palps -treatment: adenosine, underlying cause Junctional rhythm - CORRECT ANSWER -AV node in control (40-60bpm) -inverted/no P wave -walks out -causes:
