Three-way stopcocks are ideal for effectively venting air and fluid from body cavities.

We will use the same setup for several different emergency procedures, including thoracentesis (for pneumothorax, hemothorax, and other pleural effusions), therapeutic peritoneal puncture (for ascites / peritoneal effusion / peritoneal effusion) And autotransfusion.

 

You will need:

 

-Three way plug valve

 

-Expansion kit (we usually use 30 cm regular expansion kit)

 

-Syringe (60cc, 35cc, 20cc or 12cc, depending on the patient's size)

 

-Nitrile or latex gloves (those who operate three-way stopcocks should always wear gloves).

 

Connect different components.

 

Connect the three-way stopcock to the grill and extension kit. The size of the syringe will depend on the size of the patient.

 

Make sure the connection is secure and that there are no leaks.

 

It is important to ensure that all connections are very secure and that there are no leaks in the 3-way plug valve. If there is a leak, it may give the wrong impression that you are actually drawing the air from the room into the syringe through an unsafe connection, which draws the air out of the patient's body cavity.

 

To test for leaks, grip the expansion kit, rotate the valve to the right, and then suck it back into the syringe. If there are no leaks, no air should be drawn back into the syringe, and negative pressure should be maintained.

 

To operate a three-way stopcock:

 

To operate a three-way plug valve while connected to a patient, remember:

 

-The port connected to the expansion kit will point to the patient, and

 

-The port on the right side of the three-way stopcock will be used to draw liquid from the syringe and push it into a collection bowl or sample tube.

 

Remember: The direction the valve is pointing always means "closed".

 

If the valve is pointed at the patient, it will "close" to the patient and fluid (or air-if pneumothorax is being processed) will be able to flow between the syringe and the side port.

 

If the valve is pointing to the right, it will "close" to the side port and fluid (or air) will be able to travel between the patient and the syringe.

 

Therefore, when sucking back from the patient, make sure the expansion kit is not tightened and the valve should be rotated to the right. This allows you to draw the patient's liquid or air into the syringe.

 

To empty the syringe when it is full, rotate the valve toward the patient (or "close" the patient), and then push the fluid (or air) out of the syringe. When doing this, you should be able to detect liquid (or air) flowing out of the side port of the 3-way stopcock and into the collection bowl. If you accidentally emptied the syringe with the valve still pointing to the right, you can simply push the fluid (or air) back into the patient, which can be counterproductive.

 

If you are a person who operates a three-way stopcock, it is important to communicate with the person who is pushing the needle or catheter into the patient. Clearly state the pressure or negative pressure of the fluid or air flowing into the syringe. When you can easily inhale, say "good things that can flow." When encountering flow resistance, say "negative", "negative pressure" or "get nothing".

 

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