What is AV nodal reentry tachycardia?

It is an alteration characterized by a heart rate that is faster than normal, above 100 beats per minute, which usually begins and ends suddenly, forcing the heart to work harder by having to pump more blood at a higher speed.

Atrioventricular nodal reentry tachycardia appears when electrical impulses from the heart move circularly and re-enter areas they have already passed through. It is the most common type of supraventricular tachycardia and occurs more frequently in young women.

It develops in the atrioventricular node, which is the connection point of the heart’s conduction system between the atria and ventricles. It slows down the cardiac impulse for a few thousandths of a second to give the atria time to contract before the ventricles do so.

Although its origin is unknown, atrioventricular nodal reentry tachycardia is caused by the presence of additional pathways in the atrioventricular node, which despite being present from birth, cause an arrhythmia after the heart has fully developed, i.e., when the person is between 20 and 30 years old.

Signs and symptoms AV nodal reentry tachycardia

Some people may not have symptoms, but the most common are:

Anxiety.
Daze.
Fainting.
Stress.
Strong pulsations in the neck.
Dizziness.
Nervousness.
Rapid and intense palpitations.
Difficulty breathing.
Feeling of discomfort in the chest.

Diagnosis and treatment AV nodal reentry tachycardia

Once the doctor analyzes your symptoms and clinical history, they will perform a physical examination and request various tests to confirm the diagnosis, including:

Electrocardiogram.
Holter monitor.
Event recorder.

People with atrioventricular tachycardia with nodal reentry generally do not require medical treatment unless they have regular or extended incidents, so they may need:

Medications to regulate heart rate or restore normal heart rhythm.
Catheter ablation.
Cardioversion, consists of applying an electrical shock to the heart to restore the normal heart rhythm.

Valsava maneuver to help stop an episode of atrioventricular nodal reentry tachycardia, either by holding your breath and straining or coughing, among others.

At the Cardiovascular Center, we offer you a wide range of prevention, diagnosis, timely treatment, and follow-up services to care for you through a comprehensive and multidisciplinary care model. Come to us, we want to hear your heart.

Related centers and departments

Cardiovascular Center
Radiology and Molecular Imaging
Clinical Laboratory

Fuentes:

heart.org
texasheart.org
nih.gov
adam.com
tmcaz.com
elsevier.es
mayoclinic.org
msdmanuals.com
medigraphic.org
Carmona PR, Chávez GE, Mirella MJ. Taquicardia por reentrada del nodo aurículo-ventricular. CorSalud. 2013;5(1):108-119.
Iturralde TP, Colín LL, Guevara VM, et al. Experiencia en 1,500 pacientes sometidos a ablación con radiofrecuencia en el tratamiento de las taquicardias. Arch Cardiol Mex. 2000;70(4):349-356.

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The dissemination of the content of this material is for informational purposes only and does not replace, under any circumstance or condition, a consultation with a specialist doctor, for which the ABC Medical Center is not responsible for the different use that may be given to it. If you require more information related to the subject, we suggest you contact the specialist doctor you trust directly.

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Comparison of COVID-19 vaccines

Pfizer-
BioNTech

Pfizer-BioNTech

What is its effectiveness and what does it refer to?

Vaccine type: mRNA
Effectiveness: 95% after the second dose in the prevention of symptomatic COVID-19.

No Does not contain egg, latex, or preservatives.

How many doses are needed?
Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary).

Who should or shouldn’t get the vaccine?
People who should receive the vaccine are those over 16 years old.
People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine such as polyethylene glycol (PEG) or polysorbate.

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, malaise, and swollen lymph nodes.

How long will it take for me to be protected and what does it protect me from?
After 14 days of having the complete scheme (after the administration of the 2nd dose), the protection period is still under study. It protects us from serious COVID-19 or requiring hospitalization.

Moderna

What is its effectiveness and what does it refer to?

Vaccine type: mRNA
Effectiveness: 94.5% after the second dose in the prevention of symptomatic COVID-19.

Does not contain egg, latex, or preservatives.

How many doses are needed?
Two doses are needed, at least 28 days apart (or up to six weeks apart, if necessary).

Who should or shouldn’t get the vaccine?
People who should receive the vaccine are those over 18 years old.
People who should not receive the vaccine are those who have a history of anaphylactic shock (severe allergy) or who are allergic to any component of this vaccine.

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, muscle pain, chills, joint pain, fever, nausea, and swollen lymph nodes in the arm in which you received the injection.

Janssen/
Johnson
& Johnson

Janssen/ Johnson & Johnson

What is its effectiveness and what does it refer to?

Vector-based vaccine.
Effectiveness: 72.0% in the prevention of symptomatic COVID-19.
85% in the prevention of severe COVID-19.

Does not contain egg, latex, or preservatives./strong>

How many doses are needed?
Only one dose in needed.

What are the possible side effects of the vaccine?
Pain where the injection was given, headache, fatigue, muscle pain, chills, fever, and nausea.

How long will it take for me to be protected and what does it protect me from?
After 28 days of having the complete scheme (the last dose applied), the protection period is still under study. It protects us from 85% serious COVID-19 or requiring hospitalization.

AstraZeneca
and
Oxford
University

AstraZeneca and Oxford University

What is its effectiveness and what does it refer to?

Adenovirus vector-based vaccine.
Effectiveness: 82% after the second dose in the prevention of symptomatic COVID-19.

How many doses are needed?
Two doses are needed, at least 56 days apart (or up to 84 days apart, if necessary).

What are the possible side effects of the vaccine?
Pain where the injection was given, fatigue, headache, myalgia, arthralgia, and fever, which were mild to moderate in intensity and disappeared within 48 hours of vaccination.

Sputnik V

What is its effectiveness and what does it refer to?

Adenovirus vector-based vaccine.
Effectiveness: 92% after the second dose in the prevention of symptomatic COVID-19.

How many doses are needed?
Two doses are needed, at least 21 days apart (or up to six weeks apart, if necessary).

What is AV nodal reentry tachycardia?

Signs and symptoms AV nodal reentry tachycardia

Diagnosis and treatment AV nodal reentry tachycardia

Related centers and departments

Fuentes:

Index

Specialist in AV nodal reentry tachycardia