AVNRT for two

AVNRT is typically paroxysmal and may occur spontaneously in patients or upon provocation with exertion, coffee, tea or alcohol. It is more common in women than men (~75% of cases occurring in women) and may occur in young and healthy patients as well as those suffering chronic heart disease. Patients will typically complain of the sudden onset of rapid, regular palpitations. The patient may experience a brief fall in blood pressure causing presyncope or occasionally syncope.

Atrioventricular Nodal Reentrant Tachycardia

AVNRT is also referred to as paroxysmal supraventricular tachycardia (PSVT) or simply supraventricular tachycardia (SVT). However, it is important to understand that SVT is an umbrella term that refers to all tachydysrhythmias that originate above the ventricles including atrial fibrillation and atrial flutter, for example. When describing a supraventricular tachycardia that is due to a re-entrant circuit in the AV node specifically, it is better to use the term AVNRT as opposed to SVT in order to avoid confusion.

Atrioventricular Nodal Reentrant Tachycardia

Atrioventricular nodal reentrant tachycardia (AVNRT) represents the most common regular supraventricular arrhythmia in humans. The precise anatomic site and nature of the pathways involved have not yet been established, and several attempts to provide a reasonable hypothesis based on anatomic or anisotropic models have been made

Atrioventricular Nodal Reentrant Tachycardia in Very Elderly Patients: A Single-center Experience

Atrioventricular (AV) node reentrant tachycardia (AVNRT) is the most common supraventricular tachycardia (SVT). It usually affects children and young adults. We present a series of elderly patients who had recurrent palpitations but who had been incorrectly labeled as having panic attacks for decades.

AV Nodal Re-entrant Tachycardia - St. Emlyns

It is often impossible to deduce the type of tachycardia from the surface EGG. Clinical assessment may help – the tachycardia due to increased automaticity tends to start more gradually and is slower (rate 100 – 130) than the re-entrant types which usually start and stop abruptly and are faster – usually in the range of 150 – 250 per minute. The best clue to the probable origin will be obtained if P waves are visible and their relationship to the QRS complexes can be defined.

Common Types of Supraventricular Tachycardia: Diagnosis and Management

The most common type of SVT is AVNRT. Most patients with AVNRT do not have structural heart disease; the group most often affected is young, healthy women. However, some patients do have underlying heart disease, such as pericarditis, previous myocardial infarction, or mitral valve prolapse. The coexistence of slow and fast pathways in atrioventricular nodal tissue is the basis of aberrant substrate for reentrant tachyarrhythmias.

Diagnosis and Management of Common Types of Supraventricular Tachycardia

The incidence of AVNRT in women is twice that in men. It is correlated with lower estrogen levels and higher progesterone levels, and is therefore more common during the luteal phase of the menstrual cycle and less common during pregnancy. AVNRT involves a pattern of reentry in persons who have two pathways in their atrioventricular (AV) node, one slow and one fast. These pathways create a continuous and self-propagating circuit with a rapid and regular ventricular response.

Diagnosis and treatment of atrioventricular nodal reentrant tachycardia: a case report illustrating clinical management and ablation strategy

Atrioventricular nodal reentrant tachycardia is a common arrhythmia with good prognosis but significant impact on quality of life of affected patients. Catheter ablation should be considered early as it can be performed safely and with a very high success rate.

Frog sign and AV nodal reentrant tachycardia A case report

Supraventricular tachycardia is one the most frequent cardiac arrhythmias seen in patients, with AVNRT being the most common subtype. Two subgroups of AVNRT have been reported, that of typical and atypical. “Frog Sign,” long considered a classic physical exam sign, albeit rare, is associated with typical AVNRT. We present a case of a patient who presented with frog sign and ultimately was determined to have AVNRT. Knowledge of “frog” sign aids clinical diagnosis and correct treatment.

Successful Management of an Atrioventricular Nodal Re-entrant Tachycardia in a Neonate: A Case Report

The most common tachyarrhythmias in fetal cases is supraventricular tachycardia (SVT); atrioventricular nodal re-entrant tachycardia (AVNRT) type. Premature delivery, neonatal complications, and mortality following fetal SVT are high, and therefore, require proper management.

The alternative vagal maneuver; converting atrioventricular nodal re-entrant tachycardia by a rectal thermometer

Vagal maneuvers are techniques used to increase parasympathetic tone, particularly useful in the management of hemodynamically stable supraventricular tachycardias. If ineffective, adenosine can be attempted. We present a patient with atrioventricular nodal re-entrant tachycardia (AVNRT), who could not effectively perform Valsalva maneuvers and had contraindications for carotid massage and adenosine administration, that converted into sinus rhythm by using a rectal thermometer. This maneuver was reproduced on various occasions. We suggest that rectal vagal maneuver may provide an additional therapeutic modality for selected patients with AVNRT.