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- Don Parsons, Vic Convertino, Ahamed Idris, Stephen Smith, David Lindstrom, Brent Parquette, and Tom Aufderheide.
- Department of Combat Medic Training, Ft Sam Houston, TX 78234-6115, USA. Donald.Parsons@AMEDD.ARMY.MIL
- J Spec Oper Med. 2009 Jan 1;9(2):49-53.
AbstractInspiration 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.
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