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Why should we count pulse rate in 60 seconds? why not 15 seconds or 30 seconds? Thanks

So, if we use a 1 spike with multiple transducer and put it on 300mmHg pressure, it will still give the same exact volume to the patient's line? for example pressure at 300mmHg will give 3mL/hr each lines, right? Please correct me if I'm wrong. What do you mean by "split the pressure lines below the transducer"? Can you explain it more? Thank you.

In my workplace, we give bolus fluids via gravity. However, depending on patient's IV line, if it's infusing very slow despite putting it on gravity or pressure bag, we will put on pump. In fact, I find there are less infiltration events happen using pump than pressure bag...

Hi, i'm currently studying about pressure bag pump flush systems for invasive monitoring transducer. I hope a few question still puzzling me. When we monitor for invasive line such as CVL and arterial line, we will put pressure at 300mmHg to ensure it infusing 3mL/hr to make sure the lines is patent and to prevent blood back flow from the arterial. But what I don't understand is how did the 300mmHg deliver exactly 3ml/hr? is there some kind like a calculation or what. If possible some literature as a facts to prove it. Another question, I have been to 2 different hospital which give different ways of practice. Hospital A practice is if we use double transducer for CVL and Arterial line, then pump 300mmHg, it will give 3mL/Hr each line. So total volume is 6mL/hr (both). It was proven with experimental evidence which it exactly gives 3mls/hr each. Hospital B practice is if we use the same double tranducer for both lines, then pump 300mmHg, it will give 3mL/Hr. But, it will deliver to both lines. Meaning total volume deliver is 3mL/Hr (both). They rationale is that because they use different set of tranducer where it was calculated by drop factor (which I'm not sure what brand they are using). So, even when they pump 300 mmHg, when it goes into each lines, it will automatic divided into 2. Means 1.5mL/hr each. But, this discussion going deeper with a question mark: "How does a same pressure (300mmHg)for double transducer work to give more volume than single transducer?" "Can a pressure be divided into 2 lines?" "How does it explain the mechanism of the pressure system in single and double transducer?" "Can a different IV set transducer affect the systems?" Please do me a favor. If possible, I need a facts or literature as an evidence for each answer. I have been searching in google, but I still haven't got a clue.. Thank you for giving feedback. Really appreciate it.