Which frequency is recommended for flushing an IV catheter under the minimum-better-best paradigm?

Which frequency is recommended for flushing an IV catheter under the minimum-better-best paradigm?

• A. Every 2 hours
• B. Every 4 hours
• C. Every 8 hours
• D. Only after use

Answer: (B)

Maintaining IV catheter patency while using the least amount of effort and resources is the idea behind the minimum-better-best approach. Flushing regularly prevents occlusion from small clots or precipitates when the line isn’t in constant use, so there needs to be a predictable maintenance rhythm. Four-hourly flushing provides a practical balance: it keeps the line open and ready for meds without the extra burden of more frequent flushing, while not leaving the line idle for too long. Flushing more often than that tends to add workload without substantially increasing safety for most patients, and flushing only after use risks occlusion during idle periods. Flushing every eight hours is usually not enough to maintain patency in typical lines, so four hours is the recommended standard.

Maintaining IV catheter patency while using the least amount of effort and resources is the idea behind the minimum-better-best approach. Flushing regularly prevents occlusion from small clots or precipitates when the line isn’t in constant use, so there needs to be a predictable maintenance rhythm. Four-hourly flushing provides a practical balance: it keeps the line open and ready for meds without the extra burden of more frequent flushing, while not leaving the line idle for too long. Flushing more often than that tends to add workload without substantially increasing safety for most patients, and flushing only after use risks occlusion during idle periods. Flushing every eight hours is usually not enough to maintain patency in typical lines, so four hours is the recommended standard.