What Every Provider Needs to Know About Type 1 Diabetes


In July 2024, a 33-year-old woman with type 1 diabetes was boating on a hot day when her insulin delivery device slipped off. By the time she was able to exit the river, she was clearly ill, and an ambulance was called. The hospital was at capacity. Lying in the hallway, she was treated with fluids but not insulin, despite her boyfriend repeatedly telling the staff she had diabetes. She was released while still vomiting. The next morning, her boyfriend found her dead.

This story was shared by a friend of the woman in a Facebook group for people with type 1 diabetes and later confirmed by the boyfriend in a separate heartbreaking post. While it may be an extreme case, encounters with a lack of knowledge about type 1 diabetes in healthcare settings are quite common, sometimes resulting in serious adverse consequences.

In my 50+ years of living with the condition, I’ve lost track of the number of times I’ve had to speak up for myself, correct errors, raise issues that haven’t been considered, and educate nonspecialist healthcare professionals about even some of the basics.

Type 1 diabetes is an autoimmune condition in which the insulin-producing cells in the pancreas are destroyed, necessitating lifelong insulin treatment. Type 2, in contrast, arises from a combination of insulin resistance and decreased insulin production. Type 1 accounts for just 5% of all people with diabetes, but at a prevalence of about 1 in 200, it’s not rare. And that’s not even counting the adults who have been misdiagnosed as having type 2 but who actually have type 1.

As a general rule, people with type 1 diabetes are more insulin sensitive than those with type 2 and more prone to both hyper- and hypoglycemia. Blood sugar levels tend to be more labile and less predictable, even under normal circumstances. Recent advances in hybrid closed-loop technology have been extremely helpful in reducing the swings, but the systems aren’t foolproof yet. They still require user input (ie, guesswork), so there’s still room for error.

Managing type 1 diabetes is challenging even for endocrinologists. But here are some very important basics that every healthcare provider should know:

We Need Insulin 24/7

Never, ever withhold insulin from a person with type 1 diabetes, for any reason. Even when not eating — or when vomiting — we still need basal (background) insulin, either via long-acting analog or a pump infusion. The dose may need to be lowered to avoid hypoglycemia, but if insulin is stopped, diabetic ketoacidosis will result. And if that continues, death will follow.

This should be basic knowledge, but I’ve read and heard far too many stories of insulin being withheld from people with type 1 in various settings, including emergency departments, psychiatric facilities, and jails. On Facebook, people with type 1 diabetes often report being told not to take their insulin the morning before a procedure, while more than one has described “sneaking” their own insulin while hospitalized because they weren’t receiving any or not receiving enough.

On the flip side, although insulin needs are very individual, the amount needed for someone with type 1 is typically considerably less than for a person with type 2. Too much can result in severe hypoglycemia. There are lots of stories from people with type 1 diabetes who had to battle with hospital staff who tried to give them much higher doses than they knew they needed.

The American Diabetes Association recommends that people with type 1 diabetes who are hospitalized be allowed to wear their devices and self-manage to the degree possible. And please, listen to us when we tell you what we know about our own condition.

Fasting Is Fraught

I cringe every time I’m told to fast for a test or procedure. Fasting poses a risk for hypoglycemia in people with type 1 diabetes, even when using state-of-the-art technology. Fasting should not be required unless absolutely necessary, especially for routine lab tests.

Saleh Aldasouqi, MD, chief of endocrinology at Michigan State University, East Lansing, Michigan, has published several papers on a phenomenon he calls “Fasting-Evoked En Route Hypoglycemia in Diabetes,” in which patients who fast overnight and skip breakfast experience hypoglycemia on the way to the lab.

“Patients continue taking their diabetes medication but don’t eat anything, resulting in low blood sugar levels that cause them to have a hypoglycemic event while driving to or from the lab, putting themselves and others at risk,” Aldasouqi explained, adding that fasting often isn’t necessary for routine lipid panels.

If fasting is necessary, as for a surgical procedure that involves anesthesia, the need for insulin adjustment — NOT withholding — should be discussed with the patient to determine whether they can do it themselves or whether their diabetes provider should be consulted.

But again, this is tricky even for endocrinologists. True story: When I had my second carpal tunnel surgery in July 2019, my hand surgeon wisely scheduled me for his first procedure in the morning to minimize the length of time I’d have to fast. (He has type 1 diabetes himself, which helped.) My endocrinologist had advised me, per guidelines, to cut back my basal insulin infusion on my pump by 20% before going to bed.

But at bedtime, my continuous glucose monitor (CGM) showed that I was in the 170 mg/dL’s and rising, not entirely surprising since I’d cut back on my predinner insulin dose knowing I wouldn’t be able to eat if I dropped low later. I didn’t cut back the basal.

When I woke up, my glucose level was over 300 mg/dL. This time, stress was the likely cause. (That’s happened before.) Despite giving myself several small insulin boluses that morning without eating, my blood sugar was still about 345 mg/dL when I arrived at the hospital. The nurse told me that if it had been over 375 mg/dL, they would have had to cancel the surgery, but it wasn’t, so they went ahead. I have no idea how they came up with that cutoff.

Anyway, thankfully, everything went fine; I brought my blood sugar back in target range afterward and healed normally. Point being, type 1 diabetes management is a crazy balancing act, and guidelines only go so far.

We Don’t React Well to Steroids

If it’s absolutely necessary to give steroids to a person with type 1 diabetes for any reason, plans must be made in advance for the inevitable glucose spike. If the person doesn’t know how to adjust their insulin for it, please have them consult their diabetes provider. In my experience with locally injected corticosteroids, the spike is always higher and longer than I expected. Thankfully, I haven’t had to deal with systemic steroids, but my guess is they’re probably worse.

Procedures Can Be Pesky

People who wear insulin pump and/or CGMs must remove them for MRI and certain other imaging procedures. In some cases — as with CGMs and the Omnipod insulin delivery device that can’t be put back on after removal — this necessitates advance planning to bring along replacement equipment for immediately after the procedure.

Diabetes devices can stay in place for other imaging studies, such as X-rays, most CT scans, ECGs, and ultrasounds. For heaven’s sake, don’t ask us to remove our devices if it isn’t totally necessary.

In general, surprises that affect blood sugar are a bad idea. I recently underwent a gastric emptying study. I knew the test would involve eating radioactive eggs, but I didn’t find out there’s also a jelly sandwich with two slices of white bread until the technician handed it to me and told me to eat it. I had to quickly give myself insulin, and of course my blood sugar spiked later. Had I been forewarned, I could have at least “pre-bolused” 15-20 minutes in advance to give the insulin more time to start working.

Another anecdote: Prior to a dental appointment that involved numbing my gums for an in-depth cleaning, my long-time dental hygienist told me “be sure to eat before you come.” I do appreciate her thinking of my diabetes. However, while that advice would have made sense long ago when treatment involved two daily insulin injections without dose adjustments, now it’s more complicated.

Today, when we eat foods containing carbohydrates, we typically take short-acting insulin, which can lead to hypoglycemia if the dose given exceeds the amount needed for the carbs, regardless of how much is eaten. Better to not eat at all (assuming the basal insulin dose is correct) or just eat protein. And for the provider, best to just tell the patient about the eating limitations and make sure they know how to handle.

Duh, We Already Have Diabetes

I’ve heard of at least four instances in which pregnant women with type 1 diabetes have been ordered to undergo an oral glucose tolerance test to screen for gestational diabetes. In two cases, it was a “can you believe it?!” post on Facebook, with the women rightly refusing to take the test.

But in May 2024, a pregnant woman reported she actually drank the liquid, her blood sugar skyrocketed, she was vomiting, and she was in the midst of trying to bring her glucose level down with insulin on her own at home. She hadn’t objected to taking the test because “my ob. gyn. knows I have diabetes,” so she figured it was appropriate.

I don’t work in a healthcare setting, but here’s my guess: The ob. gyn. Hadn’t actually ordered the test but had neglected to UN-order a routine order for a pregnant patient who already had diabetes and obviously should NOT be forced to drink a high-sugar liquid for no reason. If this is happening in pregnancies with type 1 diabetes, it most certainly could be as well for those with preexisting type 2 diabetes. Clearly, something should be done to prevent this unnecessary and potentially harmful scenario.

In summary, I think I speak for everyone living with type 1 diabetes in saying that we would like to have confidence that healthcare providers in all settings can provide care for whatever brought us to them without adding to the daily burden we already carry. Let’s work together.

Reviewed by Saleh Aldasouqi, MD, chief of endocrinology at Michigan State University.

Miriam E. Tucker is a freelance journalist based in the Washington, DC, area. She is a regular contributor to Medscape Medical News, with other work appearing in the Washington Post, NPR’s Shots blog, and Diatribe. She is on X @MiriamETucker.



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Publish date : 2024-08-16 05:42:43

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