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Ever wonder: IS there a….

12 Lead
ECG Interpretation
Cheat Sheet Mnemonic?

The Answer?

Absolutely YES!

  Introducing Dr. Stanley’s HEART Mnemonic Ruler .  This 3.5″ x 9.75″ laminated pocket guide packs a powerhouse of information into a quick reference pocket-sized card.

Full color and 100% made in the USA, the HEART Mnemonic Ruler  provides a 12-lead ECG interpretation cheat sheet and covers the following ECG interpretation topics:

  • A systematic, methodical analysis for interpretation of the 12-lead ECG using Dr. Stanley’s HEART Mnemonic ™ Acronym (Hypertrophy, Extent of the ECG Intervals, ECG Axis, qRs & ST wave, T-wave)
  • Addressing Lead avR on ECG Anaylsis
  • Sgarbossa Criteria & LBBB
  •  Scalar ECG / EKG Paper 
  • STEMI & Acute MI regions of the heart: Septal, Anterior, Lateral, Right, Posterior & Inferior View
  • Left Ventricular Hypertrophy Criteria, LBBB & RBBB Criteria
  • WPW (Wolf-Parkinson-White) Criteria


 Target audience: Physicians, Nurse Practitioners, Physician Assistants, RNs, EMS, Paramedics, Monitor Technicians, Medical Students.

Cost: Only $15!

Emergency Medicine Physician | Dr Stanley's ECG Courses

Take Worry Out of the Dreaded STEMI


Does this sound familiar?  It’s 2 a.m. on a Saturday.  You are the lead medical provider in a 15-bed ER.  The computer reading on the ECG states: “Nonspecific ST Changes”, “Diffuse T-wave changes”, “Benign Normal Variant, Cannot Rule Out STEMI”  What!?!? 

We know the computer interpretation on the ECG is notoriously flawed to say the least.  In the setting of an acute STEMI (ST-elevation myocardial infarction), time is cardiac muscle.  You must recognize even subtle changes on the ECG quickly.  

In 2020, *Cardiovascular Disease (CVD) remained the leading cause of death accounting for nearly 1 Million fatalities in the USA.  Such morbidity and mortality costs around $400 Billion dollars in medical costs and lost wages (*AHA Journal). 

  • ^Nearly 1.2 million Acute MIs / Year
  • Occurrence: approximately 1 Acute MI every 26 minutes in the US
  • First symptom of CVD may be Acute MI (STEMI) or Sudden Cardiac Death (SCD)

^ref here for more information 

**STEMI (ST Elevation MI) vs NSTEMI (Non-STEMI) ECG

These terms (STEMI vs NSTEMI) generally represent 2 types of heart attacks as follows:

  • #1: In the case of a STEMI on the ECG, there is a complete blockage of the coronary artery.  
  • #2 Regarding NSTEMI on the ECG, there is a partial blockage of the artery.   (**additional references)

Ranked #1 Online ECG Course by Digital Defynd 2022 & 2023!

And read what our Providers have to say…

"Wonderful course. Helps organize sequence of (STEMI) ECG analysis. Enough examples to cover the basics well. Thank you for taking the time to create this great course online."
~ Don R.
ER Physician
"Thank you so much for all of your help; all of my staff feel that this is an excellent course to both learn and refresh."
~ Jeanette T.
Hospital CME Coordinator
"Well organized and flexible, it has been a fresh and fast review. I will look forward to…all further activities that Dr. Stanley …[has to] share with us online. Thanks very much…"
~ Paolo M.P.
Medical Doctor, UK
Front & Back of Dr. Stanley’s 12-lead ECG Interpretation HEART Mnemonic Ruler™ …
HEART Ruler REV 2020

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Dr Vernon Stanley Creator Online ECG Courses

Meet Dr Stanley


For 40 years, Dr. Vernon Stanley, MD, PhD has worked to develop quality continuing medical ECG CME education courses with a focus on interpretation of the 12-lead ECG by ALL members of the medical team. 

A veteran Emergency Physician and previous Regional Medical Director, Dr. Stanley has been a guest lecturer for physicians, medical professionals and medical students.  He has long believed that early intervention in the Acute MI and early recognition is a vital key to the best patient outcomes.  He was a pioneer of the first pre-hospital 12-lead ECG cellular-to-hospital system in West Virginia.

Want to Review All 5 of Dr Stanley's Online ECG Courses?
All courses are awarded the highest level of AMA PRA Category I CME (approved for physicians, NPs & PAs) and nursing CE!