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Related Concept Videos

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Related Experiment Video

Updated: Jun 17, 2025

Non-Invasive Monitoring of Microvascular Oxygenation and Reactive Hyperemia using Hybrid, Near-Infrared Diffuse Optical Spectroscopy for Critical Care
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Heliox ventilation in elderly, hypertensive ICU patients improves microcirculation: A randomized controlled study.

Lili Zhou1, Jing Lin2, Mingkai Zhuang3

  • 1Department of Geriatrics, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, PR China; Department of Critical Care Medicine, Fujian Medical University Union Hospital, Fuzhou, Fujian 350001, PR China.

Journal of Critical Care
|August 13, 2024
PubMed
Summary
This summary is machine-generated.

Heliox ventilation improved hemodynamics and microcirculation in elderly hypertensive patients. This innovative approach offers a potential solution to limitations of conventional nitrogen-oxygen ventilation.

Keywords:
Cardiac outputElderly hypertensionHeliox ventilationMicrocirculation

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Area of Science:

  • Critical Care Medicine
  • Respiratory Physiology
  • Cardiovascular Physiology

Background:

  • Conventional mechanical ventilation negatively impacts hemodynamics in elderly, hypertensive ICU patients.
  • Limited research exists on mitigating these adverse effects.
  • Heliox ventilation is explored as a potential alternative.

Purpose of the Study:

  • To evaluate the efficacy of heliox ventilation in improving hemodynamics, particularly microcirculation.
  • To compare heliox ventilation with conventional nitrogen-oxygen ventilation in elderly hypertensive patients.

Main Methods:

  • Thirty-eight elderly hypertensive patients undergoing mechanical ventilation were randomized into heliox (experimental) and nitrogen-oxygen (control) groups.
  • Hemodynamic parameters (blood pressure, HR, SpO2, ScvO2, rSO2, Lac, airway pressure) and sublingual microcirculation were measured over 3 hours.
  • Volume-controlled ventilation (VCV) mode was used throughout the study.

Main Results:

  • Heliox ventilation led to decreased airway pressure and lactic acid levels.
  • Significant improvements were observed in blood pressure, central venous oxygen saturation (ScvO2), and regional cerebral oxygen saturation (rSO2) in the heliox group.
  • Sublingual microcirculation indexes were notably better in the heliox group compared to the control group.

Conclusions:

  • Heliox ventilation demonstrates significant benefits for blood pressure and microcirculation in elderly hypertensive patients.
  • This technique may overcome the hemodynamic limitations associated with traditional nitrogen-oxygen ventilation.