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Related Concept Videos

Pulse rhythm01:30

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Conducting Respiratory Oscillometry in an Outpatient Setting
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High-frequency oscillation in adults: a utilization review.

Neill K J Adhikari1, Abdel Bashir, François Lamontagne

  • 1Department of Critical Care Medicine and the Sunnybrook Research Institute, Sunnybrook Health Sciences Centre, Toronto, Canada. neill.adhikari@utoronto.ca

Critical Care Medicine
|July 19, 2011
PubMed
Summary

High-frequency oscillation (HFO) offers modest oxygenation improvement in severe acute respiratory distress syndrome (ARDS) patients. However, complications are frequent, and mortality remains high, necessitating careful patient selection for HFO.

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Area of Science:

  • Critical Care Medicine
  • Pulmonary Medicine
  • Mechanical Ventilation

Background:

  • High-frequency oscillation (HFO) is a ventilation strategy used for adults with acute lung injury and acute respiratory distress syndrome (ARDS).
  • The clinical benefits of HFO in ARDS remain uncertain, prompting investigation into its contemporary application and outcomes.

Purpose of the Study:

  • To describe patient selection criteria for HFO in ARDS.
  • To detail the utilization patterns of HFO in academic centers.
  • To report on the outcomes and complications associated with HFO in critically ill adults.

Main Methods:

  • A utilization review was conducted across ten academic centers in Ontario, Canada.
  • Data from 190 consecutive adult patients treated with HFO were retrospectively analyzed.
  • Logistic regression was used to identify factors associated with oxygenation response, complications, and mortality.

Main Results:

  • The study population predominantly consisted of severely ill ARDS patients with hypoxemia.
  • Adjunctive therapies like neuromuscular blockade and steroids were frequently used during HFO.
  • While 62.5% showed an initial oxygenation response, complications were common, and in-hospital mortality was high (66.7%).

Conclusions:

  • HFO is primarily used in severe ARDS patients with hypoxemia, offering modest short-term oxygenation improvement.
  • Complications, including barotrauma and technical issues, are frequent during HFO.
  • Mortality remains high, with older age, higher illness severity scores, and pre-HFO Paco2 independently predicting death.