In a study of siphon venous drainage, what were the maximum flows recorded for 3/8 inch tubing at lengths of 20" to 30"?

The correct answer reflects the maximum flow rate that can be achieved using 3/8 inch tubing over lengths varying from 20 inches to 30 inches. In cardiovascular perfusion, understanding the relationship between tubing diameter, length, and flow dynamics is crucial for ensuring effective venous drainage during procedures.

3/8 inch tubing is commonly used in perfusion setups, and when examining flow rates, factors such as the viscosity of the blood and the pressure differential play significant roles. The selection of 3.5 L/m represents a flow rate that balances these factors, accommodating the resistance to flow presented by the length of the tubing while still allowing for a reasonably efficient drainage capacity.

Additionally, this flow rate aligns with what is typically observed in venous drainage studies, demonstrating a level of clinical relevance in the perfusion field. Thus, acknowledging the principles of fluid dynamics along with practical considerations in a clinical setting supports the validity of this answer.