Concealed and manifest 1:2 tachycardia and atrioventricular nodal reentrant tachycardia: Manifestations of dual atrioventricular nodal physiology
| Autor: | Mark E. Josephson, Panos Papageorgiou, Vidal Essebag, Joseph Germano |
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| Rok vydání: | 2005 |
| Předmět: |
Male
Tachycardia business.industry Physiology Middle Aged Atrioventricular node QRS complex medicine.anatomical_structure Heart Conduction System Physiology (medical) Atrioventricular Node cardiovascular system medicine Humans Tachycardia Atrioventricular Nodal Reentry cardiovascular diseases medicine.symptom Electrical conduction system of the heart Cardiology and Cardiovascular Medicine NODAL business |
| Zdroj: | Heart Rhythm. 2:536-539 |
| ISSN: | 1547-5271 |
| Popis: | ual atrioventricular (AV) nodal physiology is a comon finding, occurring in 10% of patients undergoing lectrophysiology study. A 1:2 or dual ventricular reponse is a well-described phenomenon that occurs in ome patients with dual AV nodal pathways. Two QRS omplexes may not be present if 1:2 AV nodal conducion is associated with infranodal block of conduction roceeding over either pathway. This may be termed a oncealed 1:2 response, in contrast to a manifest 1:2 esponse where two QRS complexes are present. Rarely, dual ventricular response can be sustained producing a :2 tachycardia, otherwise known as a nonreentrant suraventricular tachycardia (SVT). AV nodal reentrant achycardia (AVNRT) is the most common SVT associted with dual AV nodal physiology. The presence of VNRT and a 1:2 tachycardia in the same patient has nly been reported once. A concealed 1:2 response has lso only been reported in one patient. We report the rst case of a patient demonstrating dual AV nodal physology with sustained concealed and manifest 1:2 conuction as well as AVNRT. |
| Databáze: | OpenAIRE |
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