Paroxysmal atrial tachycardia may be caused by several different things. The fast rate may be triggered by a premature atrial beat that sends an impulse along an abnormal electrical path to the ventricles. Other causes stem from anxiety, stimulants, overactive thyroid, and in some women, the onset of menstruation.
Sudden hearing loss is associated with vertigo in between 20 to 60% of patients (Rambold et al, 2005). The wide spread probably depends on what you define as vertigo -- a little bit of dizziness, or a profound sensation of rotation. Patients with vertigo also usually have worse hearing (Niu et al, 2015).
The audiologist also confirmed a mild sensorineural hearing loss in the patient's right ear. Ear structures affected: c Cause of hearing loss: The labyrinth has two functions: hearing and balance. The cochlear labyrinth controls hearing, primarily at low frequencies whereas the vesibular labyrinth controls balance. When inflamed, it can cause various parts of the inner ear to become swollen and irritated, causing disruptions in the flow of sound waves through the ear, creating a loss of balance and hearing.