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Definition

flow

  1. Movement of a gas or liquid.
  2. The act of moving or running freely.

laminar f.Laminar air flow.

peak f.The maximum volume of air that can be expelled from the lungs during a vigorous exhalation. The peak flow is measured in liters per minute (L/min). Its measurement is used to determine the degree of respiratory impairment in patients with obstructive lung diseases.

turbulent f.A movement of gas in disorderly currents, associated with high velocity and high density with increased tubing diameter.