MDAST 325 FINAL STUDY GUIDE
WITH COMPLETE SOLUTIONS
What statement is true? - Correct Answers -The gel on the electrodes helps pick up the
electrical impulses.
A record or recording of electrical impulses of the heart produced by an
electrocardiograph. - Correct Answers -ECG and EKG
What is the default chart speed? - Correct Answers -25 mm/s
The state where the cardiac cells are resting. - Correct Answers -Polarized state
The PR interval represents _________________________. - Correct Answers -atrial
depolarization
Sensitivity testing is used to determine: - Correct Answers -a pathogen's susceptibility to
a particular antibiotic.
An organism that is flexible as far as its oxygen requirements are concerned is called
a(n): - Correct Answers -facultative anaerobe.
Which medical term is the study of fungi and the diseases they cause? - Correct
Answers -Mycology
Upward movement away from the baseline in an ECG tracing. - Correct Answers -
Positive deflection
The pacemaker of the heart is the: - Correct Answers -The pacemaker of the heart is
the:
What chest electrode is placed on the fifth intercostal space on the mid-clavicular line? -
Correct Answers -V4
Which part of the electrocardiogram represents atrial contraction? - Correct Answers -P
wave
The P wave: - Correct Answers -is the first wave in the tracing.
, is the first wave in the tracing. - Correct Answers -Right leg
When performing an electrocardiogram, there is an erratic movement on the reading.
What is this movement called? - Correct Answers -Artifact
The patient talks during the ECG. What artifact could occur? - Correct Answers -
Somatic tremor
When calculating the heart rate from an electrocardiogram strip, how many boxes are
equal to or represent one second of time? - Correct Answers -5 large boxes
Where should the precordial lead V4 be placed for an electrocardiogram? - Correct
Answers -Fifth intercostal space left of the midclavicular line
A resting 12 lead ECG: - Correct Answers -uses 10 electrodes and lead wires.
The contractive phase of the heartbeat is: - Correct Answers -systole.
The valve between the left upper and lower chambers of the heart is the: - Correct
Answers -mitral valve.
________ artifact appears as jagged peaks with irregular height and spacing. - Correct
Answers -Somatic tremor
What occurs during the QRS complex? - Correct Answers -Atrial repolarization and
ventricular depolarization
Which of the following urine tests is performed using a chemical test strip? - Correct
Answers -Presence of nitrites
Which of the following terms describes the study of tissues? - Correct Answers -
Histology
Safety Data Sheets provide information about chemical safety and hazardous
information related to - Correct Answers -all of these
Which of the following is not a CLIA-waived test? - Correct Answers -Gram's staining
Which lab result has a negative or positive value? - Correct Answers -Qualitative
Which of the following is not a responsibility of the medical assistant in the clinical
laboratory? - Correct Answers -Interpreting abnormal results and providing patients with
diagnoses
Decreased hemoglobin levels are seen in which of the following illnesses? - Correct
Answers -All are correct
WITH COMPLETE SOLUTIONS
What statement is true? - Correct Answers -The gel on the electrodes helps pick up the
electrical impulses.
A record or recording of electrical impulses of the heart produced by an
electrocardiograph. - Correct Answers -ECG and EKG
What is the default chart speed? - Correct Answers -25 mm/s
The state where the cardiac cells are resting. - Correct Answers -Polarized state
The PR interval represents _________________________. - Correct Answers -atrial
depolarization
Sensitivity testing is used to determine: - Correct Answers -a pathogen's susceptibility to
a particular antibiotic.
An organism that is flexible as far as its oxygen requirements are concerned is called
a(n): - Correct Answers -facultative anaerobe.
Which medical term is the study of fungi and the diseases they cause? - Correct
Answers -Mycology
Upward movement away from the baseline in an ECG tracing. - Correct Answers -
Positive deflection
The pacemaker of the heart is the: - Correct Answers -The pacemaker of the heart is
the:
What chest electrode is placed on the fifth intercostal space on the mid-clavicular line? -
Correct Answers -V4
Which part of the electrocardiogram represents atrial contraction? - Correct Answers -P
wave
The P wave: - Correct Answers -is the first wave in the tracing.
, is the first wave in the tracing. - Correct Answers -Right leg
When performing an electrocardiogram, there is an erratic movement on the reading.
What is this movement called? - Correct Answers -Artifact
The patient talks during the ECG. What artifact could occur? - Correct Answers -
Somatic tremor
When calculating the heart rate from an electrocardiogram strip, how many boxes are
equal to or represent one second of time? - Correct Answers -5 large boxes
Where should the precordial lead V4 be placed for an electrocardiogram? - Correct
Answers -Fifth intercostal space left of the midclavicular line
A resting 12 lead ECG: - Correct Answers -uses 10 electrodes and lead wires.
The contractive phase of the heartbeat is: - Correct Answers -systole.
The valve between the left upper and lower chambers of the heart is the: - Correct
Answers -mitral valve.
________ artifact appears as jagged peaks with irregular height and spacing. - Correct
Answers -Somatic tremor
What occurs during the QRS complex? - Correct Answers -Atrial repolarization and
ventricular depolarization
Which of the following urine tests is performed using a chemical test strip? - Correct
Answers -Presence of nitrites
Which of the following terms describes the study of tissues? - Correct Answers -
Histology
Safety Data Sheets provide information about chemical safety and hazardous
information related to - Correct Answers -all of these
Which of the following is not a CLIA-waived test? - Correct Answers -Gram's staining
Which lab result has a negative or positive value? - Correct Answers -Qualitative
Which of the following is not a responsibility of the medical assistant in the clinical
laboratory? - Correct Answers -Interpreting abnormal results and providing patients with
diagnoses
Decreased hemoglobin levels are seen in which of the following illnesses? - Correct
Answers -All are correct
