Investigations

Why?

• The ability of tilt table testing to diagnose true cases with vasovagal syncope is unclear. 
• Even though patients with a history of syncope have a positive test more often than healthy controls ^c , those with a positive test do not clearly have a different prognosis. ^c
• Treatment regimes for patients with recurrent syncope have only been tested on patients with positive tilt tests ^{a b} , so whether tilt table testing is able to select patient groups who will benefit from treatment is unclear.