This document discusses, among other things, systems and methods that detect hypotension based on a measurement of thoracic impedance. It also provides an alert, a logging, or a therapy to treat the hypotension. Examples of anti-hypotension therapies include, among other things, pacing therapy, neural...http://www.google.co.uk/patents/US20050283197?utm_source=gb-gplus-sharePatent US20050283197 - Systems and methods for hypotension
