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Published on: January 24, 2025

Microbubbles: pathophysiology and clinical implications

Michal Barak1, Yeshayahu Katz

  • 1Department of Anesthesiology, Rambam Medical Center, Haifa, Israel.

Chest
|October 21, 2005
PubMed

Insights

Microbubbles, often overlooked consequences of medical procedures, can cause significant tissue damage by obstructing blood flow. This review highlights their pathophysiology, clinical impact, and strategies for management.

Area of Science:

  • Cardiovascular Research
  • Pulmonary Medicine
  • Medical Device Technology

Background:

  • Gas embolism is a recognized complication of invasive procedures.
  • The clinical significance of microemboli (microbubbles) is frequently underestimated in practice.
  • Microbubbles can arise from extracorporeal devices or endogenous sources.

Purpose of the Study:

  • To review the pathophysiology and clinical consequences of microbubbles.
  • To present evidence of microbubble-induced detrimental effects from animal and human studies.
  • To discuss the detection, prevention, and treatment of microbubble-related complications.

Main Methods:

  • Literature review of existing data on microemboli.
  • Analysis of studies investigating microbubble effects in animal models.
  • Examination of clinical evidence from human studies.

Main Results:

  • Microbubbles obstruct capillaries, leading to ischemia, inflammation, and complement activation.
  • Platelet aggregation and clot formation exacerbate microcirculatory obstruction and tissue damage.
  • Detrimental biological and clinical effects are documented in various organs, primarily the lungs.

Conclusions:

  • Microbubbles pose a significant, underrecognized threat in clinical practice.
  • Effective management strategies for microbubbles are crucial.
  • Further research and clinical vigilance are needed for detection, prevention, and treatment.

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