The Impedance Threshold Device (ITD-7): A New Device for Combat Casualty Care to Augment Circulation and Blood Pressure in Hypotensive Spontaneously Breathing Warfighters

Inspiration through -7cm H2O resistance results in an increase in venous blood flow back to the heart and a subsequent increase in cardiac output and blood pressure in hypotensive animals and patients. Breathing through the impedance threshold device with 7cm H2O resistance (ITD-7) also reduces intr...

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Bibliographic Details
Main Authors: Parsons, Don, Convertino, Vic, Idris, Ahamed, Smith, Stephen, Lindstrom, David, Parquette, Brent, Aufderheide, Tom
Format: Report
Language:English
Subjects:
Anatomy and Physiology
BLOOD CIRCULATION
BLOOD PRESSURE
CASUALTIES
COMBAT CASUALTY CARE
HYPOTENSION
IMPEDANCE
ITD-7(IMPEDANCE THRESHOLD DEVICE)
Medicine and Medical Research
MILITARY MEDICINE
RESPIRATION
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Summary:Inspiration through -7cm H2O resistance results in an increase in venous blood flow back to the heart and a subsequent increase in cardiac output and blood pressure in hypotensive animals and patients. Breathing through the impedance threshold device with 7cm H2O resistance (ITD-7) also reduces intracranial pressure with each inspiration, thereby providing greater blood flow to the brain. A new device called an ITD-7 was developed to exploit these physiological mechanisms to buy time in hypotensive War Fighters when other therapies are not readily available. Animal and clinical data with the ITD-7 demonstrate the potential value and limitations of this new non-invasive approach to enhancing circulation. Published in the Journal of Special Operations Medicine, v9 n2 p49-53, Spring 2009.