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Exam Review

Key Facts: IAED EMD Exam

80%

Passing Score

IAED Certification Policies

24 hrs

Required Course Length

IAED EMD Course Standard

2 yrs

Certification Validity

IAED Recertification Policy

24 hrs

CDE per Cycle

IAED Continuing Dispatch Education

34

MPDS Chief Complaint Protocols

Medical Priority Dispatch System

6

Determinant Levels (Omega-Echo)

MPDS Determinant Structure

~3%

ACE Random QA Sampling

IAED ACE 20 Points

IAED EMD is the certification for MPDS-based emergency medical dispatch. Candidates complete a 24-hour IAED-approved course and pass a closed-book multiple-choice exam with a score of at least 80 percent. Certification is valid for 2 years; recertification requires 24 hours of Continuing Dispatch Education (CDE) and an open-protocol exam, again at 80 percent. Content covers the four-part MPDS call flow (Case Entry, Key Questions, DLS, Case Exit), the 36 chief complaint protocols, determinant codes from OMEGA to ECHO, scripted PAIs/PDIs (Telephone CPR, choking, childbirth, naloxone, AED, bleeding control, hazmat), and QA fundamentals (AQUA, EMD-Q, ACE 20 Points).

Sample IAED EMD Practice Questions

Try these sample questions to review concepts for the IAED EMD exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 140+ question experience with AI tutoring.

1Which professional body administers the Emergency Medical Dispatcher (EMD) certification and maintains the Medical Priority Dispatch System (MPDS)?
A.International Academies of Emergency Dispatch (IAED)
B.National Emergency Number Association (NENA)
C.Association of Public-Safety Communications Officials (APCO)
D.National Highway Traffic Safety Administration (NHTSA)
Explanation: The IAED is the standard-setting body for EMD, EFD, EPD, and ETC certifications and is the steward of the MPDS protocols. Priority Dispatch Corp. publishes the materials and ProQA software, but certification is granted by IAED.
2Who originally developed the Medical Priority Dispatch System used by IAED-certified EMDs?
A.Dr. Jeff Clawson
B.Dr. Eugene Nagel
C.Dr. Norman McSwain
D.Dr. Peter Safar
Explanation: Dr. Jeff Clawson worked as an EMT and dispatcher in Salt Lake City before becoming an emergency physician and fire department medical director there. In the late 1970s he wrote the first priority dispatch protocol cards, which went into use in 1979 and evolved into the structured caller-interrogation and pre-arrival instruction system now published as MPDS. He later founded what is now the IAED.
3An EMD candidate completes the required 24-hour EMD course. What minimum score must be achieved on the IAED certification exam to pass?
A.80 percent
B.70 percent
C.75 percent
D.90 percent
Explanation: IAED requires at least 80 percent on the certification exam that follows the 24-hour EMD course. The exam is a 50-question written test, so 40 correct answers are needed. A candidate who misses the cutoff may retest online for a 30 USD fee.
4How often must an IAED-certified EMD recertify, and what amount of Continuing Dispatch Education (CDE) is required during that cycle?
A.Every 2 years with 24 hours of CDE
B.Every year with 12 hours of CDE
C.Every 3 years with 36 hours of CDE
D.Every 2 years with 48 hours of CDE
Explanation: EMDs recertify every two years by completing 24 hours of approved Continuing Dispatch Education, holding a current CPR credential, and passing an open-protocol recertification exam at 80 percent or higher.
5In MPDS, what is the correct sequence followed on every medical call?
A.Case Entry, Key Questions, Dispatch Life Support, Case Exit
B.Dispatch, Key Questions, Case Entry, Post-Dispatch Instructions, Case Exit
C.Key Questions, Pre-Arrival Instructions, Case Entry, Dispatch
D.Case Entry, Dispatch, Key Questions, Pre-Arrival Instructions
Explanation: MPDS structures every call as Case Entry, Key Questions, Dispatch Life Support, and Case Exit. Dispatch Life Support carries both the Pre-Arrival and the Post-Dispatch Instructions. Responders are sent as soon as a Chief Complaint and a verified location exist, in parallel with continued interrogation.
6Which items does the MPDS Case Entry Protocol capture on every medical call before the EMD moves to a Chief Complaint Protocol?
A.Location, callback number, what happened, plus age, consciousness, and breathing
B.Location, caller's name, the patient's current medications, and whether police are needed
C.Callback number, weather conditions, location, and the patient's full medical history
D.Patient's name, social security number, location, and the insurance carrier on file
Explanation: Case Entry verifies the location and the callback number, asks the caller to say exactly what happened, then establishes the patient's approximate age, whether the patient is awake, and whether the patient is breathing. Those last answers drive the Fast Track to Dispatch CPR.
7An MPDS determinant code reads 10-D-4. What does the letter 'D' represent?
A.The determinant level, DELTA
B.The dispatch agency code assigned by the CAD system
C.The certification level held by the answering dispatcher
D.A district code identifying the geographic response zone
Explanation: In a Determinant Code the letter is the determinant level. The six levels run OMEGA, ALPHA, BRAVO, CHARLIE, DELTA, ECHO from lowest to highest acuity, so D is DELTA, a life-threatening category that agencies normally configure for an advanced-life-support response.
8Within an MPDS determinant code such as 9-E-1, which level is reserved for the highest priority — typically requiring closest-unit response, including BLS first-responder activation?
A.ECHO
B.DELTA
C.CHARLIE
D.ALPHA
Explanation: ECHO is the highest of the six MPDS determinant levels and is used when the patient is in, or is about to be in, extremis. Agencies normally configure ECHO to launch the closest available unit, including BLS first responders, alongside the transporting ambulance.
9Which determinant level in MPDS is used for incidents that are referable or that warrant a non-emergency or alternate-care response with no lights and siren?
A.OMEGA
B.BRAVO
C.CHARLIE
D.DELTA
Explanation: OMEGA is the lowest of the six determinant levels and covers incidents that can be referred to nurse triage, alternate care, or a non-emergency response. Protocol 9 carries 9-Omega-1, EXPECTED DEATH unquestionable, as an example of an OMEGA code.
10An MPDS chief complaint protocol number identifies which of the following?
A.The clinical problem category being interrogated
B.The type and number of units that will respond
C.The age band used to select pediatric instructions
D.The county dispatch zone the address falls in
Explanation: Each MPDS Chief Complaint Protocol is numbered, and the number defines which interrogation set the EMD works through. Protocol 6 is Breathing Problems, 9 is Cardiac or Respiratory Arrest/Death, 10 is Chest Pain, 11 is Choking, and 26 is Sick Person.

About the IAED EMD Exam

The IAED Emergency Medical Dispatcher (EMD) certification is the recognized credential for 9-1-1 medical telecommunicators using the Medical Priority Dispatch System (MPDS). Candidates complete an IAED-approved 24-hour EMD course covering Case Entry, Key Questions, determinant codes, Pre-Arrival and Post-Dispatch Instructions, and Dispatch Life Support, then pass a closed-book multiple-choice exam at 80 percent or higher.

Exam sponsor: International Academies of Emergency Dispatch (IAED). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Questions

50 questions

Time Limit

Set by the certifying course provider (IAED publishes no time limit)

Passing Score

80 percent

Exam / Certification Fees

IAED application fee $50 plus $30 per retest; course tuition varies by training center

Exam sponsor website

Reported exam pass rate: Not published. IAED does not publish first-time EMD certification pass-rate percentages. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

Foundational

MPDS Protocol Structure

Case Entry, Key Questions, Dispatch Life Support, Case Exit, parallel processing, and Fast Track for cardiac arrest.

Heavy

Chief Complaint Protocols (1-36)

Selection logic for cardiac, respiratory, trauma, obstetric, behavioral, environmental, and hazmat chief complaints.

Heavy

Determinant Codes

Number-letter-number coding, ECHO/DELTA/CHARLIE/BRAVO/ALPHA/OMEGA levels, suffixes, and response configurations.

Heavy

Dispatch Life Support (PAIs/PDIs)

Telephone CPR, choking, childbirth, naloxone, AED, tourniquet/bleeding control, hazmat evacuation, and eye irrigation.

Moderate

Quality Assurance and ACE

AQUA case review, EMD-Q deviation scoring, ACE 20 Points, NENA-STA-020 (the NENA Standard for 9-1-1 Call Processing), and ASTM F1258 expectations.

Moderate

Legal, Ethical, and Caller Management

Duty to act, abandonment, HIPAA, FCC priority, call recording, Persistence/Hysterical Threshold, and CISM.

Preparing for the IAED EMD Exam

What You Need to Know

  • Passing score: 80 percent
  • Exam length: 50 questions
  • Time limit: Set by the certifying course provider (IAED publishes no time limit)
  • Exam / certification fees: IAED application fee $50 plus $30 per retest; course tuition varies by training center Official sources

Using Our Practice Resources

  • Work through all 140 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

IAED EMD: Suggested Study Strategy

1Read the MPDS Principles of Emergency Medical Dispatch text or your course manual once cover to cover before timed practice — understanding the philosophy of structured interrogation makes the protocols easier to memorize.
2Build a 'protocol tree' flashcard set: chief complaint number, primary indications, top Key Questions, and characteristic determinants for each of the 34 protocols.
3Memorize the determinant level hierarchy (OMEGA, ALPHA, BRAVO, CHARLIE, DELTA, ECHO) and the chief complaints that have ECHO levels — those are the highest-acuity dispatches you must recognize fast.
4Practice scripted PAIs out loud: Telephone CPR (compressions only), Heimlich for conscious choking adults, childbirth, prolapsed cord knee-chest, naloxone administration, tourniquet placement, and eye irrigation.
5Drill the difference between PAIs and PDIs by listing two examples from each on the same protocol (e.g., Protocol 9 PAI = compressions; PDI = unlock the door).
6For QA questions, learn the AQUA deviation categories (minor/moderate/major), the ACE 20 Points headline standards, the ~3 percent random review threshold, and the difference between IAED ACE standards and NENA-STA-020.
7Practice Calltaker techniques — Persistence, Repetitive Persistence, and Hysterical Threshold management — using sample hostile-caller scripts; the exam tests recognition of these.
8Use a 90-day study plan: course weeks 1-3, protocol drilling weeks 4-6, PAIs and QA weeks 7-8, mixed timed practice weeks 9-12.

Frequently Asked Questions

What is the IAED EMD certification?

The Emergency Medical Dispatcher (EMD) certification, issued by the International Academies of Emergency Dispatch, is the credential for 9-1-1 medical telecommunicators using the Medical Priority Dispatch System (MPDS). It is earned by completing a 24-hour IAED-approved course and passing a closed-book multiple-choice exam at 80 percent or higher.

Who administers the EMD exam and the MPDS protocols?

The IAED is the certifying body and the protocol steward. Priority Dispatch Corp. publishes the MPDS materials and the ProQA software many centers use to deliver the protocol on the console.

What score do I need to pass the IAED EMD exam?

Candidates must score at least 80 percent on the multiple-choice EMD certification exam. The recertification exam (open-protocol) also requires 80 percent.

How long is the IAED EMD course?

The IAED-approved EMD course is 24 hours of instruction, which can be delivered in classroom, blended, or virtual formats depending on the provider.

How often must EMDs recertify?

EMDs recertify every 2 years by completing 24 hours of Continuing Dispatch Education (CDE) and passing the open-protocol recertification exam at 80 percent or higher.

What is the MPDS call flow?

MPDS organizes every medical call into Case Entry, Key Questions, Dispatch Life Support (which includes Pre-Arrival and Post-Dispatch Instructions), and Case Exit. Responders are dispatched as soon as the chief complaint and verified address are known.

What is a determinant code like 10-D-4?

The first number (10) is the chief complaint protocol (Chest Pain), the letter (D) is the determinant level (DELTA — life-threatening), and the second number (4) identifies the specific descriptor within that level. Suffixes can be appended to capture condition modifiers.

What is the difference between PAIs and PDIs?

Pre-Arrival Instructions (PAIs) are scripted, time-critical hands-on interventions like Telephone CPR, choking maneuvers, childbirth coaching, and naloxone administration. Post-Dispatch Instructions (PDIs) are non-critical safety/comfort directives such as unlocking the door, securing pets, and gathering medications.

What is ACE accreditation?

The IAED Accredited Center of Excellence (ACE) program recognizes communication centers that meet 20 specific standards of MPDS compliance, QA sampling, EMD-Q certification, training, and Medical Director oversight.

What is the role of an EMD-Q?

An EMD-Q is an IAED-certified quality-assurance reviewer who scores randomly sampled calls in AQUA software against MPDS compliance, classifying deviations as minor, moderate, or major and trending performance over time.