Between 1 1/3 inch and 2 inch IV catheters, which length provides faster administration?

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Prepare for the NOVA Clinical Anesthesia Exam 1. Familiarize yourself with key concepts in anesthesia, get tested on-depth with multiple-choice questions, and use hints and explanations to enhance learning. Start your study journey today!

Multiple Choice

Between 1 1/3 inch and 2 inch IV catheters, which length provides faster administration?

Explanation:
Shorter catheter length means less resistance for the fluid to overcome inside the tube. With the same inner diameter and the same pressure difference (or IV setup), a shorter catheter provides a faster flow because resistance to flow is directly proportional to length. So the 1 1/3 inch catheter will deliver fluid faster than the 2 inch catheter. A longer catheter (2 inch) adds more resistance, making the flow slower, and a 3 inch option would be even slower.

Shorter catheter length means less resistance for the fluid to overcome inside the tube. With the same inner diameter and the same pressure difference (or IV setup), a shorter catheter provides a faster flow because resistance to flow is directly proportional to length. So the 1 1/3 inch catheter will deliver fluid faster than the 2 inch catheter. A longer catheter (2 inch) adds more resistance, making the flow slower, and a 3 inch option would be even slower.

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