Aetiology and haemodynamic patterns of orthostatic hypotension in a tertiary syncope unit
AimsOrthostatic hypotension (OH) is an important differential diagnosis in unexplained syncope. Neurogenic OH (nOH) has been postulated to differ from non-neurogenic OH (non-nOH), yet pathophysiological differences are largely unexplored. We aimed to investigate aetiology and tilt table test (TTT)-induced haemodynamic responses in symptomatic OH patients.Methods and resultsWe performed a retrospec