Understanding EKGs - Ch 6 Questions and Answers 100% Correct

What is key to learning, understanding, and interpreting dyrhythmias? - ANSWER-A systematic approach, which must be used each and every time a strip is analyzed. What are the general rules for correctly identifying heart rhythms? - ANSWER-1.Look at your patient! 2.Read EVERY strip from left to right 3.Apply 5-step systematic approach 4.Avoid shortcuts and assumptions 5.Ask and answer each question in the 5-step approach. 6.Master accepted limits for each dysrhythmia, apply 5-steps What is the 5-Step approach? - ANSWER-Step 1: Heart rate Step 2: Heart rhythm Step 3: P wave Step 4: PR interval Step 5: QRS complex What is a heart rate? - ANSWER-The number of electrical impulses conducted through the myocardium in 60 seconds. What is a parameter? - ANSWER-Normal boundaries for the heart rate or beats per minute When calculating heart rate, which chambers are measured? - ANSWER-Atria and Ventricles What is bradycardia? - ANSWER-Heart rate less than 60 beats per minute What is tachycardia? - ANSWER-Heart rate more than 100 beats per minute How is the atrial heart rate calculated? - ANSWER-By counting the number of P waves How is the ventrical heart rate calculated? - ANSWER-By counting the number of QRS complexes What should you do when the atrial and ventricular heart rates are dissimilar? - ANSWER-Calculate both What is a "normal" heart rate? - ANSWER-60 - 100 beats per minute When assessing a patient, what should be asked? - ANSWER-"How is the rhythm significant to the patient's clinical picture?" What are the two methods commonly used to determine heart rate by visual examination of an EKG strip? - ANSWER-1. 6-second method 2. R-R interval method