NWCA EXAM QUESTIONS AND ANSWERS

NWCA EXAM QUESTIONS AND
ANSWERS

the heart is located in the - Correct Answers -mediastinum

the valves of the heart are made up of - Correct Answers -endocardium

why is cardiac tissue unique - Correct Answers -bc it is all fused together, so it acts as
one

where is the AV bundle located - Correct Answers -at the top of the septum

or

on the wall between the right atrium and the right ventricle

what can happen when the heart beats too slowly - Correct Answers -syncope

electrocardiogram - Correct Answers -a recording or tracing of an EKG

cardiac cycle - Correct Answers -the beginning of a beat until the beginning of the next
beat

= PQRST

when does a U wave occur - Correct Answers -when a patient has very low K+

what does the standard check - Correct Answers -the voltage that the instrument is
using

what is a heart murmur - Correct Answers -the sound of faulty action when the valves
close

one of the major causes of heart failure is - Correct Answers -untreated high BP

when measuring the height of peaks in an EKG, what number does each large square
represent - Correct Answers -5mm x 5mm

lead - Correct Answers -a picture of the heart

normal standard - Correct Answers -10 mm/mV