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DHA EKG Technician (DHA-EKG) Resources
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Understanding the exact breakdown of the DHA EKG Technician test will help you know what to expect and how to most effectively prepare. The DHA EKG Technician has multiple-choice questions . The exam will be broken down into the sections below:
| DHA EKG Technician Exam Blueprint | ||
|---|---|---|
| Domain Name | % | Number of Questions |
| Medical Terminology | 32% | 22 |
| Anatomy and Physiology | 26% | 18 |
| Rhythm | 24% | 17 |
| Basic Interpretations | 18% | 13 |
DHA EKG Technician Study Tips by Domain
- Differentiate directional terms and planes used in ECG reporting (anterior vs posterior, inferior vs lateral, frontal vs horizontal plane) — red flag: swapping “inferior” and “anterior” commonly leads to incorrect lead-group conclusions.
- Know ECG-specific abbreviations (HR, PR, QRS, QT/QTc, ST, PVC, PAC, AV, SA) and when to spell out for documentation — common trap: writing “PT” instead of “PR” can be read as prothrombin time, not PR interval.
- Use correct terms for conduction blocks and fascicular blocks (1°/2°/3° AV block, RBBB/LBBB, LAFB/LPFB) — priority rule: confirm whether the term describes rate/interval criteria vs a rhythm label before charting.
- Apply ischemia/injury/infarction terminology precisely (ST depression, ST elevation, T-wave inversion, pathologic Q waves) — red flag: calling any ST elevation “STEMI” without clinical correlation is inappropriate for technician documentation.
- Recognize medication and electrolyte terms commonly tied to ECG changes (digoxin effect, beta-blocker, calcium channel blocker, hypokalemia, hyperkalemia, hypomagnesemia) — contraindication cue: QT-prolonging drug terminology should prompt heightened attention to QT/QTc documentation.
- Document symptoms and clinical context with standard terms (syncope, palpitations, dyspnea, chest pain, diaphoresis) while separating subjective report from objective findings — common trap: charting “rule out MI” or making a diagnosis instead of recording the patient’s stated complaint and ECG measurements.
- Trace cardiac blood flow (SVC/IVC → RA → RV → pulmonary arteries → lungs → pulmonary veins → LA → LV → aorta)—common trap: mixing up which side is pulmonary vs systemic circulation.
- Know the conduction pathway (SA node → AV node → His bundle → bundle branches → Purkinje)—priority rule: AV node is the normal gatekeeper; AV nodal dysfunction is a red flag for dropped beats.
- Relate ECG waves to physiology (P = atrial depolarization, QRS = ventricular depolarization, T = ventricular repolarization)—common trap: assuming the ECG directly shows mechanical contraction rather than electrical activity.
- Identify coronary artery basics (RCA, LAD, LCx) and typical territories—red flag: inferior wall ischemia often points to RCA involvement, which can also affect SA/AV nodal perfusion.
- Understand cardiac cycle timing (diastole = filling/coronary perfusion; systole = ejection)—priority rule: tachycardia shortens diastole first, so chest pain with fast rates is a clinical warning sign.
- Link lead viewpoints to anatomy (limb leads vs precordial V1–V6 across septal/anterior/lateral regions)—common trap: misplacing V1/V2 too high; incorrect intercostal space placement can mimic pathologic ST/T changes.
- Confirm rhythm regularity by comparing R–R intervals across the strip; red flag: a rhythm that “looks regular” over 2 beats may be irregular when you scan the full 6 seconds.
- Determine atrial activity first (P waves present? consistent shape? one P per QRS?); common trap: mislabeling atrial flutter as sinus tachycardia because flutter waves are hidden in T waves.
- Check AV relationship and PR behavior (constant vs progressively lengthening vs variable); priority rule: identify blocks by PR pattern before naming the escape rhythm (e.g., Mobitz I vs Mobitz II).
- Differentiate narrow vs wide QRS to localize origin; red flag: treat any wide-complex tachycardia as ventricular tachycardia until proven otherwise (safer default for DHA-style safety questions).
- Recognize lethal rhythms promptly—ventricular fibrillation, pulseless VT, asystole; contraindication cue: don’t call asystole until you confirm leads/cables, gain, and two leads (rule out loose electrode artifact).
- Identify common artifacts that mimic arrhythmia (muscle tremor, wandering baseline, 60-cycle interference); common trap: diagnosing afib without confirming true absence of organized P waves and consistent fibrillatory baseline across the strip.
- Confirm standard calibration before interpreting: 25 mm/s and 10 mm/mV; red flag if calibration mark is not 10 mm high because all interval and voltage judgments become unreliable.
- Determine heart rate using the 300–150–100–75–60–50 method for regular rhythms, or count QRS complexes in a 6-second strip ×10 for irregular; common trap is using the 6-second method on a perfectly regular rhythm and reporting an imprecise rate.
- Assess rhythm regularity by comparing R–R intervals and check for a consistent P before every QRS; red flag if QRS complexes are irregularly irregular with no distinct P waves (think atrial fibrillation).
- Measure intervals precisely: PR 0.12–0.20 s, QRS <0.12 s, and QTc roughly <440 ms (men) or <460 ms (women); priority rule is to report PR >0.20 s (1st-degree AV block) and QRS ≥0.12 s (bundle branch block or ventricular origin).
- Evaluate ST segments and T waves for ischemia/injury patterns: ST elevation or depression of ≥1 mm in contiguous leads is a critical cue; common trap is mistaking early repolarization or baseline wander for true ST change without checking a stable baseline.
- Use lead groups to localize changes: inferior (II, III, aVF), lateral (I, aVL, V5–V6), anterior/septal (V1–V4); red flag is reciprocal ST depression in opposing leads, which strengthens concern for acute MI and should be escalated promptly per facility protocol.
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These DHA EKG Technician practice exams are designed to simulate the real testing experience by matching question types, timing, and difficulty level. This approach helps you get comfortable not just with the exam content, but also with the testing environment, so you walk into your exam day focused and confident.
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DHA EKG Technician Aliases Test Name
Here is a list of alternative names used for this exam.
- DHA EKG Technician
- DHA EKG Technician test
- DHA EKG Technician Certification Test
- DHA
- DHA DHA-EKG
- DHA-EKG test
- DHA EKG Technician (DHA-EKG)
- EKG Technician certification
