EKGDX is the only software in the world capable of generating any twelve-lead EKG with a format identical to the real ones. It is considered the best EKG simulator ever. The educational part of the platform is focused on interactive learning, combined with graphic explanations and clinical-anatomical correlation. It is a superb addition to the library of every medical student, nurse, intern, resident, physicians in practice, cardiology fellows that are interested in improving their interpretation of EKGs and preparing for board examinations.

How much does EKGDX cost?

EKGDX contains Volume I and II. Volume I is $9.99/month (subscription) and Volume II is $59.99 for 6 months access.

What the EKG DX name means?

The initial idea was to develop an artificial intelligence (still in development) that diagnoses any type of EKG. That is why we decided the name EKGDX. EKG stands for electrocardiogram and DX stands for diagnosis. The decision of the "K" in the word EKG, is in honor of Wilhelm Einthoven.

How does EKGDX differ from other books?

Currently, most physicians, nurses and students experience problems when performing an adequate interpretation of an EKG, and this is due to several factors. To solve this GLOBAL problem, we created an interactive and didactic tool that facilitates the learning process in a different way.

The QRS patterns

Name: EKGDX
Brand: EKGDX
Rating: 5 (13 reviews)

Created by team@ekgdx.com on Dec. 23, 2022

Let’s talk about Q wave and QRS complex.

Q wave

A Q wave is any negative deflection that precedes an R wave. It represents the initial phase of ventricular depolarization.

An isolated Q wave in lead III may be a normal variant.

Abnormal Q waves causes include: MI, Heart infiltrative diseases, myocarditis, hypertrophic cardiomyopathy, myocardial tumors, hyperkalemia, pneumothorax, others.

Let’s continue with the QRS complex.

The QRS complex is the major positive deflection on the EKG and represents the ventricular depolarization.

✅ Normal axis: -30° to +90°.
✅ Normal duration: 0.06 to <0.10 sec.
✅ Marked prolongation: >0.12 sec.

Transition

✅ Normal transition occurs around V3-V4.
✅ Early R/S transition: R/S ratio >1 in V1 or V2.

Nomenclature

✅ Q wave: Any initial negative deflection.
✅ R wave: Any positive deflection.
✅ S wave: Any negative deflection after an R wave.

Under normal circumstances R wave height will increase from V1-V5 then decrease in V6.

Poor R wave progression is considered when:

✅ The R wave in V3 <3mm.

Consider low voltage if:

✅ R+S<5 mm in limb leads.
✅ R+S<10 mm in precordial leads.

In regards to fragmented QRS (fQRS):

fQRS can be defined as the presence of additional R′ waves or a notch in the nadir of the R or S wave (fragmentation) in two contiguous leads corresponding to a coronary territory in a routine 12-lead EKG. Fragmented wide QRS (f-wQRS) is defined as two or more notches in the R or S wave, in two contiguous leads corresponding to a coronary territory (anterior, lateral or inferior). The notches should be separated by at least 40 msec. This myocardial conduction abnormality has been associated with myocardial scar.

Now I'm going to show you various types of QRS patterns.

qRs

qrS

qRS

rSr'

rSR'

Do you want to practice with complex EKGs?

If you are a cardiology fellow who needs to practice for the ABIM cardiology board or you are someone who wants to practice with complex 12-lead EKGs, our Volume II is what you need.

Do you want to improve your EKG skills?

With our unique, revolutionary and innovative educational platform, you will learn EKG easier than ever. Download the App here and get started. I hope you enjoy our interactive way of learning EKG.

References

Related articles

Read more

All the articles

Thanks for joining us.

Dr. Roig

QRS patterns