Venturi Principle In Anaesthesia Pdf

A comparison of venturi and side-arm ventilation in anaesthesia for bronchoscopy Article (PDF Available) in Canadian Journal of Anaesthesia 20(4):569-574 July 1973 with 63 Reads DOI: 10.1007. Venturi principle This is another important principle in Anesthesia Physics. When a fluid or gas passes through a tube of varying diameter, the pressure exerted by fluid (lateral pressure) is minimum where velocity is maximum (pressure energy drops where kinetic energy increases: Bernoulli’s law). Laryngoscope is inserted from right side of angle of mouth, gets fixed by chest piece, it is self retaining & larynx is visualized through binocular operating microscope.Thus both hands of surgeon are free. Keywords: stridor; microlaryngoscopy; bronchoscopy; propofol; tubeless anaesthesia.

• A short converging part: It is that portion of the venturi where the fluid gets converges. • Throat: It is the portion that lies in between the converging and diverging part of the venturi. The cross section of the throat is much less than the cross section of the converging and diverging parts. As the fluid enters in the throat, its velocity increases and pressure decreases.

Venturi Principle In Anaesthesia Pdf Format

• Diverging part: It is the portion of the venturimeter (venturi) where the fluid gets diverges. Principle of Venturimeter The working of venturimeter is based on the principle of Bernoulli’s equation. • Here we have considered two cross section, first at the inlet and the second one is at the throat. The difference in the pressure heads of these two sections is used to calculate the rate of flow through venturimeter. • As the water enters at the inlet section i.e. In the converging part it converges and reaches to the throat. • The throat has the uniform cross section area and least cross section area in the venturimeter.

Venturi

Venturi Principle Air Flow

As the water enters in the throat its velocity gets increases and due to increase in the velocity the pressure drops to the minimum. • Now there is a pressure difference of the fluid at the two sections. At the section 1(i.e.

Serial port redirection rdp. At the inlet) the pressure of the fluid is maximum and the velocity is minimum. And at the section 2 (at the throat) the velocity of the fluid is maximum and the pressure is minimum. • The pressure difference at the two section can be seen in the manometer attached at both the section.

• This pressure difference is used to calculate the rate flow of a fluid flowing through a pipe. Also Read: Expression for the rate of flow through Venturimeter.

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