April 2, 2019 Bill Thompson Apr 2, 2019 Daily, Health, Hospitals, Medical Literature, Products, Science, Surgery Comments Off on April 2, 2019 University of Texas Health Science Center at San Antonio: Automatic implantable cardiac defibrillators (AICDs) deliver shocks to the heart to correct arrythmias. Researchers have now shown that an AICD can be programmed to also measure stroke volume — the amount of blood pumped out of the heart. The hope is that this will enable the AICDs to deliver shocks only when needed.