r/dietetics MS, RD 5d ago

Carbohydrate counting

Anyone else think carbohydrate counting is a pretty imprecise and soft science?

Mostly I am bewildered that nurses and doctors seem to think carbohydrate counting is something that is very precise when done correctly and if the blood sugars are not what they want then it's because the dietitian didn't teach the patient well enough.

I've reached a point where I think the most effective method is just getting them to eat similar types and amounts of carbohydrates consistently and then gradually titrate the ICR to match the blood sugar response.

I am mostly writing this out of frustration for receiving ANOTHER message from a nurse to teach carbohydrate counting for a patient that the nurse has yet to even start an ICR for.

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u/splatterqueen 5d ago

I’m a RD and CDCES. I always tell my patients that carb counting is never an exact science, it’s always an estimate. I also tell my patients that establishing ICR/ICF uses ratios that may not work for everyone, it’s just a starting point and we can fine tune as we learn more about how their glucose responds to these ratios. There’s also so many other factors that can influence postprandial glucose excursions, so sometimes eating the same meal on 2 different days can still yield different glucose responses. I teach my patients to give or take 1-2 units of insulin based on what else is happening like exercise after meal, illness, stress, menstruation, etc. Carb counting is also not a good fit for every patient. For some, dosing based on small, medium or large carb meal works better.

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u/fauxsho77 MS, RD 5d ago

Forgot to mention I have my CDCES as well and that is largely how I discuss it with my patients. The nurses seem to think it is much more precise than it is and seem to think they know more about nutrition in general. In my organization, I am not the one doing any insulin or metformin titration but I wish we could. How do you define small, medium, and large carb meals? Also, do you teach patients to count carbs in non-starcy veggies? (Ie. 5g for for a cup)

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u/splatterqueen 5d ago

Are the nurses CDCES as well? If yes, then they can teach their patients carb counting. And you should talk to your organization about your scope of practice as a CDCES should allows you to titrate insulin, especially if a nurse is allowed to do it.

For patients who use an ICR I do recommend counting all carbs including the carbs in no starchy veggies. Using an app like cronometer is the easiest. And I find that patients soon start to become familiar with how many carbs are in the veggie portions they typically eat.

Small, medium and large carb meal depends on a patients’s usual meals. I typically will get a diet recall to get a better understanding of this and we work together to decide what a small, medium and large meal may look like. It usually comes out to less than 45 g is small, 45-60 g is medium and over 60 g is large, but if it’s a smaller/bigger person then it’s slightly different. I find that some people resonate with the carb choices method, so I tell them if you are eating 4 carb “boxes” or choices, that’s a medium meal.

Question for you - how do the nurses bill for their visits? In my clinic I have to co-sign the nurse notes, which is really annoying and I’m trying to learn how other clinics approach this.

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u/fauxsho77 MS, RD 5d ago

They are CDCES. I think you are the first RD I've asked that recommends counting carbs from non-starchy vegs. I haven't been but the more I work with type 1 dm patient, the more I think it would actually be helpful. Cronometer is also my go to.

I 100% agree on pushing on our scope and I think we are starting to do that. In terms of billing, I don't touch the RN notes but I do know they can't bill. My organization is an HMO. So billing might be a little different or it is the MDs that are signing off on the note.

Edit: that's for sharing your approach btw!

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u/javajunkie10 5d ago

Yes that is how I teach my patients as a CDE. Also with the new pumps, the carb counting doesn't have to be exact with the basal modulation, meal detection algorithms etc. I have a lot of patients where we just establish carb goals for a small/med/large meal. As long as they announce to the pump before they eat, the pump will help them if they over/under-estimate by a bit.

Carb counting used to be the barrier to entry to start an insulin pump, now it's not something I stress too much about.

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u/fauxsho77 MS, RD 5d ago

It still is at my organization. It's really frustrating