|Week 2 Scholarly Questions and Analytical Thinking
Make sure you can explain what is happening during the electrical conduction through the heart and what is showing on the EKG tracing.
What causes the delay in conduction at the AV node?
What is different from the right bundle branch and the left bundle branch (fascicles--what are they)?
Practice identifying the Q, R, and S on EKG tracings in your text.
What does the Q represent electrically in the heart? (Yes, the Depolarization of ventricular septum)
Each view of the heart is an EKG lead. How many views do we typically use? (12 is correct)
There are 6 limb leads divided into two categories. What are they?
Which LIMB leads are bipolar and which are unipolar?
Be able to draw and label Einthovens triangle with the correct charges.
Be able to draw and label all of the augmented and standard leads.
What are the precordial leads? How many are there? What EKG pioneer discovered the precordial leads?
Which leads are in the horizontal plane and which leads are in the frontal plane?
Class remember, we VIEW the leads in the heart from their positive electrode, and then state whether the depolarization is going toward the electrode or away from it.
Be able to draw and label the hexaxial reference system with correct degrees, negative and positive charges, and where the limb leads are located. Add the six limb leads to this drawing and show their positive charge only.
What does precordial mean? (Yes, in front of the heart)
Make sure you can identify and classify the 'R' wave transition? For classification of the 'R' wave transtion, what are the THREE possible classifications?
What are the triplets? Make sure you can write and state them? The triplet heart rate method can only be used with what type of rhythm: Regular or Irregular?
EKG rhythms are either what or what? (Yes, Regular or Irregular)
How many seconds are there in one small box.?
How many large boxes in 6 seconds? (Yes, 30 large boxes in 6 seconds). How many large boxes in 3 seconds?
Lets keep Reviewing: What leads are in the frontal plane? What leads are in the horizontal plane?
What did Frank Norman Wilson first identify on the EKG?
What is R wave transition. How do you determine this on an EKG strip. What is a biphasic lead? If you have several biphasic leads, how do you know which is the R wave transition lead (remember, you must count small boxes above and below baseline to determine)? What are the different classifications for R wave transition. How do you state the R wave transition? (Yes, state the transition lead and then state whether it is Normal, Early or Late)