The Holter monitor showed frequent pre-ventricular and pre-atrial contractions as well as a short run of supraventricular ectopy lasting less than two seconds. The patient did not experience any syncope at rest during the Holter monitor test. On October 25, the patient had another syncopal ...
Atrial tachycardia is excluded because there are more QRS complexes than P waves. The absence of a 1:1 atrioventricular (AV) relationship also excludes orthodromic AV re-entrant tachycardia. The ECG can only be explained by rare types of supraventricular tachycardia which can manifest with either c...