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Updated: Jan 31, 2026
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The Diffusion of Passive Tracers in Laminar Shear Flow
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Laminar Air Flow Handling Systems in the Operating Room
Sameer Jain1, Mike Reed1,2
11 Northumbria Healthcare NHS Foundation Trust, Wansbeck Hospital, Northumberland, United Kingdom.
Surgical Infections
|January 1, 2019
Summary
Laminar air flow (LAF) systems aim to reduce surgical site infections by creating ultraclean zones. This review examines current LAF technology and evidence, questioning its established clinical importance in modern surgery.
Area of Science:
- Surgical Infection Prevention
- Operating Room Ventilation Technology
Background:
- Surgical site infections (SSIs) present a significant healthcare challenge, often caused by airborne microorganisms.
- Preventing microbial contamination of surgical wounds is crucial for patient outcomes.
Purpose of the Study:
- To review modern laminar air flow (LAF) systems used in operating theaters.
- To evaluate the current evidence supporting the clinical efficacy of LAF in preventing SSIs.
Main Methods:
- Review of contemporary LAF ventilation systems.
- Analysis of recent clinical evidence regarding LAF's impact on infection rates.
Main Results:
- Historically, LAF was associated with reduced infection rates, becoming a standard for implant surgery.
- Recent studies challenge the significant clinical benefit of LAF, prompting a re-evaluation.
Conclusions:
- The established role of LAF in reducing surgical site infections requires reassessment based on current evidence.
- Further investigation into the clinical importance of contemporary LAF systems is warranted.
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