Autonomic neurology
Clinical teaching and practical ideas for your next study session.
Case Discussion
Orthostatic Hypotension With a Flat Pulse: Reading the ΔHR/ΔSBP Ratio
How much should a small pulse rise change your interpretation of a large postural blood-pressure fall? Use the ΔHR/ΔSBP ratio as a clue to neurogenic physiology—without mistaking it for proof or overlooking dehydration, medications, and cardiac confounders.