Syncope.

Syncope, which can be defined as a transient loss of consciousness caused by transient global cerebral hypoperfusion and characterised by rapid onset, short duration, and spontaneous complete recovery, is a common condition. This definition is useful for differentiating syncope from other clinical conditions that also involve real or apparent transient loss of consciousness, but in which the mechanism is not global cerebral hypoperfusion, such as epilepsy, falls, or psychiatric pseudosyncope. We reviewed the etiological classification of syncope and found that reflex syncope is the most common etiology in the general population, with a good prognosis, whereas cardiac syncope increases with age and has a worse prognosis.

Radiofrequency catheter ablation of an accessory pathway through an anomalous inferior vena cava with azygos continuation.

A 59-year-old man with Wolff-Parkinson-White syndrome and an infrahepatic interruption of his inferior vena cava with an azygos continuation underwent a successful ablation of a right anteroseptal accessory pathway with a femoral approach through the azygos vein and superior vena cava.