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Vascular Catheter Material Quiz

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Questions and Answers

What determines the size of vascular catheters?

The number of lumens in the catheter

The length of the catheter

The outside diameter of the catheter (correct)

The material the catheter is made of

In the gauge system, how does gauge size relate to outside diameter?

They have a proportional relationship

Gauge size varies inversely with outside diameter (correct)

There is a fixed relationship between the two

Gauge size varies directly with outside diameter

What advantage of the French system is highlighted in the text?

It is based on a different unit of measurement

It is simpler to understand (correct)

It is only used for peripheral catheters

It has a more complex relationship between size and diameter

How does the French system calculate outer diameter from French size?

French size × 0.33 = outer diameter Signup and view all the answers

Why are silicone catheters required to be inserted with a guidewire or introducer sheath?

To prevent damage to the catheter during insertion Signup and view all the answers

Why are polyurethane catheters used for short-term vascular cannulation?

Because they provide enough tensile strength to pass through skin and tissues without kinking. Signup and view all the answers

What is a characteristic of silicone catheters that makes them suitable for long-term vascular access?

They are more pliable than polyurethane, reducing the risk of vascular injury. Signup and view all the answers

What is the primary reason for using polyurethane instead of silicone for most vascular catheters in the ICU?

Polyurethane provides more tensile strength for skin penetration without kinking. Signup and view all the answers

What role does rigidity play in the choice between polyurethane and silicone catheters?

Rigidity in polyurethane catheters can promote vascular injury, so they are used for short-term access. Signup and view all the answers

Which polymer is more suitable for applications requiring prolonged administration of chemotherapy, antibiotics, and parenteral nutrition solutions?

Silicone Signup and view all the answers