RADT1001 Exam Set Questions
With Reviewed Correct
Detailed Answers
New Update!!
1. Regarding the electrocardiographic tracing, all of the following are true EXCEPT:
a. repolarization of atrial muscle cells is represented by the P wave.
b. the QRS-complex represents depolarization of ventricular muscle cells
c. the S portion of the QRS complex represents a return to the baseline (isoelectric
point).
d. the U wave is theorized to represent repolarization of the papillary muscles and
Purkinje fibers. - ANSWER A
2. When multiplying heart rate times stroke volume, the produce is:
a. systolic pressure
b. diastolic pressure
c. cardiac cycle
d. cardiac output - ANSWER D
3. Depending on the cause and severity of an arrhythmia, treatment may include
which of the following?
a. cardiac pacemakers or ICD devices
b. ablation therapy
, c. cardioversion external shock therapy
d. all of the above might be useful in treating an arrhythmia - ANSWER D
4. Systolic pressures greater than _______ mm Hg generally ensure adequate
perfusion of tissues.
a. 80
b. 90
c. 100
d. 120 - ANSWER B
5. Rhythmic contraction and relaxation of the chambers of the heart are
controlled by principal cell types to include which of the following?
1. working cardiac cells
2. specialized neural conductive cells
3. striated muscle cells
a. 1, 2
b. 1, 3
c. 2, 3
d. 1, 2, and 3 - ANSWER A
6. All of the following are true of atrial fibrillation EXCEPT:
a. it is always fatal
b. it is caused by additional ectopic pacemaker firings in the atria that exceed SA
node firings.
c. the atria syncytium quivers instead of fully contracting.
With Reviewed Correct
Detailed Answers
New Update!!
1. Regarding the electrocardiographic tracing, all of the following are true EXCEPT:
a. repolarization of atrial muscle cells is represented by the P wave.
b. the QRS-complex represents depolarization of ventricular muscle cells
c. the S portion of the QRS complex represents a return to the baseline (isoelectric
point).
d. the U wave is theorized to represent repolarization of the papillary muscles and
Purkinje fibers. - ANSWER A
2. When multiplying heart rate times stroke volume, the produce is:
a. systolic pressure
b. diastolic pressure
c. cardiac cycle
d. cardiac output - ANSWER D
3. Depending on the cause and severity of an arrhythmia, treatment may include
which of the following?
a. cardiac pacemakers or ICD devices
b. ablation therapy
, c. cardioversion external shock therapy
d. all of the above might be useful in treating an arrhythmia - ANSWER D
4. Systolic pressures greater than _______ mm Hg generally ensure adequate
perfusion of tissues.
a. 80
b. 90
c. 100
d. 120 - ANSWER B
5. Rhythmic contraction and relaxation of the chambers of the heart are
controlled by principal cell types to include which of the following?
1. working cardiac cells
2. specialized neural conductive cells
3. striated muscle cells
a. 1, 2
b. 1, 3
c. 2, 3
d. 1, 2, and 3 - ANSWER A
6. All of the following are true of atrial fibrillation EXCEPT:
a. it is always fatal
b. it is caused by additional ectopic pacemaker firings in the atria that exceed SA
node firings.
c. the atria syncytium quivers instead of fully contracting.
