MEDCA EKG Study Guide Questions with Correct Answers
4 views 0 purchase
Course
MEDCA EKG
Institution
MEDCA EKG
MEDCA EKG Study Guide Questions with Correct Answers
The arteries that branch off from the aorta and feed oxygen-rich blood to the heart muscle are the - Answer-coronary arteries
Patient psychology can be more important in obtaining a diagnostically pure EKG than the mechanics of administering ...
MEDCA EKG Study Guide Questions
with Correct Answers
The arteries that branch off from the aorta and feed oxygen-rich blood to the heart
muscle are the - Answer-coronary arteries
Patient psychology can be more important in obtaining a diagnostically pure EKG than
the mechanics of administering the EKG - Answer-TRUE
EKG can be used to evaluate the function of the artificial pacemakers - Answer-TRUE
Muscular wall that separates the heart into a right and left side - Answer-septum
______ regulate the flow of blood into and out of the proper chambers - Answer-valves
is the color code for the lead wire to the right leg - Answer-GREEN
The blood exchanges carbon dioxide (CO2) for oxygen in the - Answer-lungs
ATP (adenosine triphosphate) is a substance that causes the muscle of the heart to -
Answer-contract momentarily
The electrocardiograph can be used to determine blood pressure - Answer-FALSE
The time normally required for one cardiac impulse & recharging of cells is - Answer-0.5
seconds
The EKG records the actual image of the heart - Answer-FALSE
The right leg electrode is called the ground, _______ electrode - Answer-reference
The three limb leads that form a triangle are called - Answer-Einthoven's triangle
Lead 1,2,3 are electrically ________ from the heart electrical activity - Answer-
equidistant
The negative pole is always on the - Answer-right leg
The __________ electrode is positive in lead 1 and negative in lead 3 - Answer-left arm
, Lead 1 records difference in electrical potential between the left arm & - Answer-the
right arm
Lead 2 records difference in electrical potential between the left leg & the - Answer-right
arm
The 3 additional leads that record frontal place activity are called - Answer-augmented
leads
Augmented leads are designated by a VR, a VL and a VF, "aV" stands for - Answer-
augmented voltage
The chest leads are numbered V1 to V6 and move in successive steps from patient's -
Answer-right to left
The function of the ____________ is to record the 3rd dimension of the heart, from front
to rear - Answer-chest leads
The EKG is a recording of the electrical impluses associated with cardiac contraction
and - Answer-relaxation
The EKG is a method of recording the heart's strength - Answer-FALSE
The EKG records the amount of voltage generated by the heart and the _____ required
for that voltage to travel - Answer-time
Polarized activity simply refers to the heart - Answer-resting
The activity of the heart during the impluses that causes contraction, but not the
contraction itself, is known as - Answer-depolarization
The electrical recovery of the heart as the cells recharge themselves is known as -
Answer-repolarization
The P wave represents ______ depolarization - Answer-atrial
The average heart ___________ times every day - Answer-beats 100,000
The average heart ____________ times every day - Answer-pumps 2,000
The human heart weighs approximately - Answer-11 ounces
The human heart is about the size of a - Answer-clenched fist
The heart is made up of specialized muscle tissue called - Answer-myocardium
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Scholarsstudyguide. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.49. You're not tied to anything after your purchase.
