Lesson 21 — Cardiology Assisting

Half B · HLT420B·Kinn's Ch 25·NHA: EKG & Cardiovascular Testing 4%

Source

This lesson has no MedCerts Storyline skill modules — the source is the HLT420B syllabus topic outline plus Kinn's Chapter 25 reading and the Body Spectrum Circulatory System interactive. Procedural content for ECG appears under Lesson 22; this page provides the topic map and links forward. No clinical facts have been added beyond what the syllabus lists; cardiac specifics (e.g., MI presentation, BP cutoffs for hypertensive heart disease) belong in Kinn's Ch 25.

Lesson Note · Content Gap

Per data/lessons.json: "No Storyline skill modules — content is video + Kinn's Ch 25 + Body Spectrum Circulatory System interactive + quiz. Cross-links to L22 for ECG procedures."

Treat this page as a study scaffold: walk Kinn's Ch 25 with the topic list below as your outline, run the AI Drill with L22 selected for ECG-adjacent practice, and use the cross-link below to drop into the procedural ECG content.

Learning Objectives — verbatim from HLT420B syllabus

Discuss cardiovascular diseases and disorders
List common cardiac diagnostic procedures and treatment
Describe pacemakers and implantable defibrillators
Summarize cardiac patient education and the medical assistant's role

Topic outline

Verbatim from the HLT420B syllabus. Use this as your study spine when reading Kinn's Ch 25.

L21 lesson topics

Introduction and Objectives
Cardiovascular Diseases and Disorders
- Structure and Function of the Heart
- Coronary Artery Disease
- Myocardial Infarction
- Hypertensive Heart Disease
- Congestive Heart Failure
- Vascular and Arterial Disorders
Cardiac Diagnostic Procedures and Treatment
- Electrocardiography (detailed in L22)
- Holter Monitor (detailed in L22-03)
- Doppler Studies
- Angiography
- Cardiac Catheterization and Angioplasty
- Treatment for Varicose Veins
- Pacemakers and Implantable Defibrillators
Role of the Medical Assistant in Cardiology
- Telephone Screening for Cardiac Pain
- Patient education for cardiovascular conditions

Cross-links to procedural content

Lesson 21 is conceptual. The actual do this with the patient procedures live in Lesson 22. Open it directly:

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Lesson 22 — Electrocardiography Kinn's Ch 11 · ECG Documentation (L22-01) and Holter Monitor (L22-03) procedural skills · L22-02 flagged as broken on source

Reading + study workflow

Suggested study order

Read Kinn's Ch 25 end-to-end with the topic outline above as your TOC.
Step through the Body Spectrum Circulatory System interactive (in your MedCerts course portal — not embeddable here).
Walk Lesson 22 for the ECG procedural mechanics that get cross-tested with L21 concepts.
Run an AI Drill in Blueprint Mock mode with L22 selected — questions tagged to ekg-cardiovascular subdomain pull L21 concepts indirectly via the L22 source content.

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NHA exam framing: the EKG & Cardiovascular Testing subdomain is 4% of the exam (~6 items of 150 scored). High-yield: knowing which lead corresponds to which heart wall, recognizing artifact vs. true rhythm, and the MA's role in stress-test patient prep. All three of those are covered procedurally in L22.

Reference

The right-edge Reference tab has a quick card for Vital sign normal ranges (sourced from L04-04 BP staging) and ABO/Rh blood compatibility (sourced from Kinn's Ch 33) — both relevant to cardiovascular assessment.