EDIUG YDUTS · AMCC
NHA
National Healthcareer Association
NHA Certified Clinical Medical Assistant (CCMA)
★ ★
EST. 1989
EMPOWERING PEOPLE TO ACCESS BETTER CARE
NHA CCMA — Certification Study Guide
CO M P R E H E N S I V E C L I N I C A L M E D I C A L A SS I STA N T R E V I E W | 2 0 0 Q U E ST I O N S
INSTITUTION National Healthcareer Association PROGRAM Certified Clinical Medical Assistant
(NHA) (CCMA)
EXAM CCMA National Certification ACADEMIC YEAR
Examination
STUDY GUIDE Complete Review With Verified TOTAL QUESTIONS 200 Questions (1–100 of 200)
Answers
CONTENT AREAS EKG, Phlebotomy, Urinalysis, FORMAT Multiple Choice — Select the
Safety, Legal & Clinical Single Best Answer
STUDY GUIDE INSTRUCTIONS
▸ Select the single best answer for each question. Review rationales thoroughly.
▸ Topics: EKG waveforms, blood composition, hemostasis, venipuncture, phlebotomy tubes, urinalysis,
lab departments, legal/ethics, vital signs, patient positions, OSHA, infection control, medical
abbreviations, cardiac anatomy, stress testing, holter monitoring.
▸ All content aligns with the NHA CCMA certification examination blueprint.
▸ Correct answers and detailed rationales appear below each question.
▸ Abbreviations, normal ranges, and procedural steps are emphasized per exam requirements.
, SECTION I — EKG, PHLEBOTOMY, URINALYSIS, SAFETY &
Questions 1 – 100
CLINICAL KNOWLEDGE
1. In medical documentation, what abbreviation represents the patient's primary reason for
seeking care?
A. HPI
B. ROS
C. CC
D. PFSH
CORRECT ANSWER C — CC
RATIONALE CC is the standard medical abbreviation for Chief Complaint — the primary reason
the patient came to see the physician. It is typically documented in the patient's
own words. HPI stands for History of Present Illness, ROS for Review of Systems,
and PFSH for Past, Family and Social History. Accurate CC documentation is a
fundamental medical assistant responsibility.
2. On an EKG rhythm strip, what is the definition of a segment?
A. Several waveforms combined together
B. A waveform plus a segment
C. The line between two wave forms
D. Movement away from the isoelectric line either positive or negative
CORRECT ANSWER C — The line between two wave forms
RATIONALE A segment is the line between two waveforms on an EKG tracing. An interval is a
waveform plus a segment (e.g., PR interval). A complex is several waveforms
combined (e.g., QRS complex). A waveform is movement away from the
isoelectric line, either positive or negative. These definitions are fundamental to
accurate EKG interpretation and are tested on the CCMA exam.
,3. What does the P-wave represent on an EKG tracing?
A. Ventricular depolarization
B. Ventricular repolarization
C. Atrial depolarization
D. Atrial repolarization
CORRECT ANSWER C — Atrial depolarization
RATIONALE The P-wave represents atrial depolarization — the electrical activation of the atria
that precedes atrial contraction. The QRS complex represents ventricular
depolarization, and the T-wave represents ventricular repolarization. Atrial
repolarization is typically obscured by the larger QRS complex on a normal
tracing. The normal P-wave does not exceed 0.11 seconds in duration or 2.5 mm
in height.
4. How many 1mm boxes are contained in a 6-second EKG rhythm strip?
A. 15 one millimeter boxes
B. 30 one millimeter boxes
C. 60 one millimeter boxes
D. 150 one millimeter boxes
CORRECT ANSWER B — 30 one millimeter boxes
RATIONALE A 6-second rhythm strip contains 30 one-millimeter boxes (large boxes). At the
standard EKG paper speed of 25 mm/second, there are 5 large boxes (each 5 mm)
per second. Over 6 seconds: 5 large boxes × 6 = 30 large boxes. Each large box
contains 5 small (1 mm) boxes, so there are 150 small boxes total. The 6-second
strip is commonly used for quick heart rate calculation.
, 5. The SA node's electrical activity is represented by which waveform on the EKG?
A. The QRS complex
B. Only the P-wave
C. The T-wave
D. The U-wave
CORRECT ANSWER B — Only the P-wave
RATIONALE The SA node represents only the P-wave on the EKG. The sinoatrial node is the
heart's primary pacemaker, firing at 60–100 bpm and initiating atrial
depolarization. The electrical impulse then travels through the internodal
pathways to the AV node, bundle of His, bundle branches, and Purkinje fibers,
which produce the remainder of the EKG tracing.
6. What measurement can be determined from the R-R interval on an EKG tracing?
A. Atrial pulse
B. Ventricular pulse
C. Respiratory rate
D. Oxygen saturation
CORRECT ANSWER B — Ventricular pulse
RATIONALE The R-R interval measures the ventricular pulse (ventricular rate). Each R wave
represents ventricular depolarization, so the time between consecutive R waves
indicates the ventricular rate. The P-P interval measures the atrial rate. Both are
used to assess rhythm regularity and calculate heart rate from the EKG tracing.
NHA
National Healthcareer Association
NHA Certified Clinical Medical Assistant (CCMA)
★ ★
EST. 1989
EMPOWERING PEOPLE TO ACCESS BETTER CARE
NHA CCMA — Certification Study Guide
CO M P R E H E N S I V E C L I N I C A L M E D I C A L A SS I STA N T R E V I E W | 2 0 0 Q U E ST I O N S
INSTITUTION National Healthcareer Association PROGRAM Certified Clinical Medical Assistant
(NHA) (CCMA)
EXAM CCMA National Certification ACADEMIC YEAR
Examination
STUDY GUIDE Complete Review With Verified TOTAL QUESTIONS 200 Questions (1–100 of 200)
Answers
CONTENT AREAS EKG, Phlebotomy, Urinalysis, FORMAT Multiple Choice — Select the
Safety, Legal & Clinical Single Best Answer
STUDY GUIDE INSTRUCTIONS
▸ Select the single best answer for each question. Review rationales thoroughly.
▸ Topics: EKG waveforms, blood composition, hemostasis, venipuncture, phlebotomy tubes, urinalysis,
lab departments, legal/ethics, vital signs, patient positions, OSHA, infection control, medical
abbreviations, cardiac anatomy, stress testing, holter monitoring.
▸ All content aligns with the NHA CCMA certification examination blueprint.
▸ Correct answers and detailed rationales appear below each question.
▸ Abbreviations, normal ranges, and procedural steps are emphasized per exam requirements.
, SECTION I — EKG, PHLEBOTOMY, URINALYSIS, SAFETY &
Questions 1 – 100
CLINICAL KNOWLEDGE
1. In medical documentation, what abbreviation represents the patient's primary reason for
seeking care?
A. HPI
B. ROS
C. CC
D. PFSH
CORRECT ANSWER C — CC
RATIONALE CC is the standard medical abbreviation for Chief Complaint — the primary reason
the patient came to see the physician. It is typically documented in the patient's
own words. HPI stands for History of Present Illness, ROS for Review of Systems,
and PFSH for Past, Family and Social History. Accurate CC documentation is a
fundamental medical assistant responsibility.
2. On an EKG rhythm strip, what is the definition of a segment?
A. Several waveforms combined together
B. A waveform plus a segment
C. The line between two wave forms
D. Movement away from the isoelectric line either positive or negative
CORRECT ANSWER C — The line between two wave forms
RATIONALE A segment is the line between two waveforms on an EKG tracing. An interval is a
waveform plus a segment (e.g., PR interval). A complex is several waveforms
combined (e.g., QRS complex). A waveform is movement away from the
isoelectric line, either positive or negative. These definitions are fundamental to
accurate EKG interpretation and are tested on the CCMA exam.
,3. What does the P-wave represent on an EKG tracing?
A. Ventricular depolarization
B. Ventricular repolarization
C. Atrial depolarization
D. Atrial repolarization
CORRECT ANSWER C — Atrial depolarization
RATIONALE The P-wave represents atrial depolarization — the electrical activation of the atria
that precedes atrial contraction. The QRS complex represents ventricular
depolarization, and the T-wave represents ventricular repolarization. Atrial
repolarization is typically obscured by the larger QRS complex on a normal
tracing. The normal P-wave does not exceed 0.11 seconds in duration or 2.5 mm
in height.
4. How many 1mm boxes are contained in a 6-second EKG rhythm strip?
A. 15 one millimeter boxes
B. 30 one millimeter boxes
C. 60 one millimeter boxes
D. 150 one millimeter boxes
CORRECT ANSWER B — 30 one millimeter boxes
RATIONALE A 6-second rhythm strip contains 30 one-millimeter boxes (large boxes). At the
standard EKG paper speed of 25 mm/second, there are 5 large boxes (each 5 mm)
per second. Over 6 seconds: 5 large boxes × 6 = 30 large boxes. Each large box
contains 5 small (1 mm) boxes, so there are 150 small boxes total. The 6-second
strip is commonly used for quick heart rate calculation.
, 5. The SA node's electrical activity is represented by which waveform on the EKG?
A. The QRS complex
B. Only the P-wave
C. The T-wave
D. The U-wave
CORRECT ANSWER B — Only the P-wave
RATIONALE The SA node represents only the P-wave on the EKG. The sinoatrial node is the
heart's primary pacemaker, firing at 60–100 bpm and initiating atrial
depolarization. The electrical impulse then travels through the internodal
pathways to the AV node, bundle of His, bundle branches, and Purkinje fibers,
which produce the remainder of the EKG tracing.
6. What measurement can be determined from the R-R interval on an EKG tracing?
A. Atrial pulse
B. Ventricular pulse
C. Respiratory rate
D. Oxygen saturation
CORRECT ANSWER B — Ventricular pulse
RATIONALE The R-R interval measures the ventricular pulse (ventricular rate). Each R wave
represents ventricular depolarization, so the time between consecutive R waves
indicates the ventricular rate. The P-P interval measures the atrial rate. Both are
used to assess rhythm regularity and calculate heart rate from the EKG tracing.
