NU 310 Exam 2 ECG Interpretation Basics Questions With Correct Answers

NU 310 Exam 2 ECG Interpretation Basics
Questions With Correct Answers

Conduction |system |in |the |heart |- |CORRECT |ANSWER✔✔-SA |node, |AV |node, |Bundle |of |His, |
Purkinje |fibers



Electrical |conduction |of |the |heart: |ECG |parts |- |CORRECT |ANSWER✔✔-P, |Q, |R |= |atria

S, |T, |U |= |ventricles



Understanding |an |ECG |strip |- |CORRECT |ANSWER✔✔-• |This |is |a |6 |seconds |ECG |strip |that |is |
usually |taken |and |read |to |look |for |electric |abnormalities |in |the |heart.

• |It |is |important |to |learn |the |times |indicated |by |each |box |to |be |able |to |understand |and |
analyze |ECGs.

• |each |box |is |0.2 |seconds



A |normal |ecg |- |CORRECT |ANSWER✔✔-• |P |wave |is |the |first |upward |(positive) |deflection |
waveform.

• |It |indicates |atrial |depolarization

• |QRS |complex |follows |the |P |wave.

• |Normally, |it |begins |with |a |downward |deflection, |Q; |a |larger |upwards |deflection, |R; |and |then |
a |downwards |S |wave.

• |The |QRS |complex |represents |ventricular |depolarization |and |contraction.

| • |T |wave |is |normally |a |modest |upwards |waveform.

• |It |representing |ventricular |repolarization

| • |U |wave |indicates |the |recovery |of |the |Purkinje |conduction |fibers.