Breathing Through an Inspiratory Threshold Device Improves Stroke Volume During Central Hypovolemia in Humans

Abstract

Inspiratory resistance induced by breathing through an impedance threshold device (ITD) reduces intrathoracic pressure and increases stroke volume (SV) in supine normovolemic humans. We hypothesized that breathing through an ITD would also be associated with a protection of SV and a subsequent increase in the tolerance to progressive central hypovolemia. Eight volunteers (5 men, 3 women) were instrumented to record ECG and beat-by-beat arterial pressure and SV (Finometer).

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Document Details

Document Type
Technical Report
Publication Date
Feb 28, 2008
Accession Number
ADA635659

Entities

People

  • Caroline A Rickards
  • Kathy L. Ryan
  • Keith G. Lurie
  • Victor A Convertino
  • William H. Cooke

Organizations

  • United States Army Institute of Surgical Research

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Cardiovascular Physiological Phenomena
  • Cardiovascular System
  • Data Analysis
  • Frequency
  • Frequency Domain
  • Health Services
  • Heart
  • Heart Rate
  • Hemorrhage
  • Hemorrhagic Shock
  • Hypovolemia
  • Measurement
  • Medical Personnel
  • Physical Examination (Medicine)
  • Physiology
  • Respiration
  • Respiratory Physiological Phenomena

Fields of Study

  • Medicine

Readers

  • Cardiovascular Physiology