Journal of anesthesia
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Journal of anesthesia · Apr 2019
The F Breathing Circuit, a universal single-limb breathing circuit: brief historical perspective.
This article presents a brief historical perspective of the F Breathing Circuit, a universal single-limb breathing circuit. The single-limb breathing circuit (tube within a tube configuration) comprises two tubes of sufficient size and compliance, so that either channel enables safe, unrestricted inspiration/expiration at all times in spontaneous and controlled ventilation. ⋯ Therefore, it qualifies as a universal breathing circuit. Since its first introduction in Japan (1978), which was followed by further modifications and improvements, the circuit was made available in USA and worldwide.