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.

Sinus Arrhythmia

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

Created by team@ekgdx.com on Jan. 22, 2023

Let’s talk about sinus arrhythmia.

Sinus arrhythmia is the presence of changing sinus rhythm with varying P-P intervals and constant PR interval.

Criteria

Normal sinus P waves.
Varying P-P intervals.
The longest and shortest P-P intervals vary by ≥0.16 sec or ≥10%.
PR interval remains constant.

There are three types of sinus arrhythmia:

Respiratory-Phasic: Sinus rate increases with inspiration and decreases with expiration.
Nonrespiratory: Sinus rate varies unrelated to respiratory cycle.
Ventriculophasic: Commonly seen in patients with second degree or third degree AV block when the P-P interval containing the QRS complex is relatively shorter compared to the P-P interval without the QRS complex.

Possible causes:

Respiratory-Phasic: May be a normal finding in young individuals or with increased vagal tone.
Nonrespiratory: Can be seen in a traumatic intracerebral hemorrhage with associated vasospasm, hypoxia or increased intracranial pressure.
Ventriculophasic: Can be seen in a second degree or third degree AV block.

The proposed mechanisms for ventriculophasic sinus arrhythmia are:

Reflex baroreceptor-mediated phasic changes in vagal tone.
Mechanical effect of pressure changes caused by ventricular systole.
Increased ventricular filling during the long sinus cycle with increased blood flow to the sinus node during ventricular systole.

respiratory sinus arrhythmia - EKGDX

Respiratory sinus arrhythmia

ventriculophasic sinus arrhythmia - EKGDX

Ventriculophasic sinus arrhythmia: Note that the PP interval containing the QRS is shorter than the PP interval without the QRS, in the setting of 2:1 AV block.

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.

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Dr. Roig

Sinus Arrhythmia