The data that we have suggest that people with diabetes are actually
not at increased risk for catching the novel coronavirus, but once they
become infected, they may do less well, particularly if they’re in an
ICU setting.
However, we don’t know if there are any differences between people with type 1 versus
type 2 diabetes,
or between people whose diabetes is well controlled versus less well
controlled. We do know that younger people as a whole do better than
older people. The more comorbidities present, such as cardiovascular
disease and
chronic kidney disease, the higher the risk for mortality and doing poorly.
Historically, we’ve believed that people with higher glucose levels
are likely to be at greater risk for infection than those with more
normal glucose levels. This is because high glucose levels can inhibit
white cell function. We obviously want our patients to be as well
controlled as possible in order to help them do better.
Some Patterns Emerge
I have now seen patients with diabetes who have been infected with
COVID-19 and heard cases of many others. No one in my personal practice
with
type 1 diabetes has developed COVID-19, but I have seen a number of people with type 2 diabetes who have had it.
What I know for sure is that I can’t predict this virus. I have had
people with every known risk factor for a poor outcome do incredibly
well, and those with fewer risk factors do worse than I expected. I’ve
seen families in whom everybody was infected, and families where only
one member became ill.
However, some patterns have emerged. Unscientifically, I divide my
patients into three groups of illness severity: mild, moderate, and
severe. Mild is when COVID-19 is a slightly annoying head cold and
nothing more. Moderate is where people feel miserable; they’re feverish,
they have muscle pain, they have headaches, their lungs hurt, they
cough, and they feel wretched—but they don’t need to be in the hospital
and they survive. Then there are the severe cases; these patients are
hospitalized, and some of them end up in the ICU.
In terms of diabetes management, it’s the moderate category where we
really have to do our most aggressive outpatient care. We don’t want
these patients to end up in the hospital. The biggest issue I deal with
is dehydration. My patients are febrile and they’re often anorexic, not
wanting to eat or drink much, so I really have to encourage hydration.
I’ve also seen patients with glucose levels lower than normal, which
is different from what I’m used to seeing in patients with infection.
Glucose monitoring is incredibly important in patients with COVID-19.
Changes to Medications
My first step in all patients who are on an SGLT2 inhibitor is to
stop the drug at the first sign of symptoms. I’ve had a lean person with
type 2 diabetes on an SGLT2 inhibitor go into
diabetic ketoacidosis
(DKA) when they developed COVID-19, so this is very important. This
patient had already stopped their SGLT2 inhibitor for a day when they
became quite ill.
Other practitioners, such as my dear friend, Dr Irl Hirsch, suggest
that we stop SGLT2 inhibitor therapy in all people with type 1 diabetes
who are using them off-label because it increases the risk for DKA. I
haven’t done that in my patients except for those who I feel are on too
low a dose of
insulin or who seem to be at higher risk for DKA than others. For my patients who are able to test for
ketones and connect with me, I’ve kept them on their SGLT2 inhibitor, but I suggest monitoring this on a case-by-case basis.
In my patients with type 1 diabetes, I make sure that they are
prepared with glucose-containing fluids at home, and that they’re able
to give injected insulin. I also make sure that they have ketone test
strips at home and some sort of antiemetic so they can keep down fluids.
Preparing a Hospital Kit
There has been an issue in hospitals where patients on insulin drips
can’t get hourly blood glucose readings because the staff doesn’t have
enough personal protective equipment to go in and out of patient rooms
to do the testing. Patients must be prepared to do self-monitoring of
glucose levels in the hospital if they happen to end up hospitalized. I
encourage patients with type 1 diabetes and those with type 2 diabetes
on insulin to prepare a kit that they could bring with them to the
hospital. This kit includes testing supplies (if people are doing
self-monitoring of blood glucose) and sensors (if people are on a
sensor).
People need to remember such details as bringing charger cables for
their iPhones, iPads, and anything else they may need to help
self-monitor their glucose levels if hospitalized. This is particularly
important now because family members aren’t allowed into hospitals to
bring the pieces that someone may have forgotten at home.
In people with type 2 diabetes who are on insulin secretagogues
and/or insulin, I have needed to lower the dose of medication, and in
some cases, to stop it. Again, self-monitoring is important.
As patients recover from their COVID-19 infections, they may still not feel much like eating and have relative
anorexia.
There have been some cases where I have held the GLP-1 receptor agonist
therapy for a week or two after the illness has resolved to make sure
my patients return to their fully normal baseline state.
The most important advice I give patients is to reach out to us,
their healthcare team, if they need us. None of us want anyone to go to
the hospital, but there are patients who develop DKA and can’t keep down
fluids, and they need to be hospitalized. Patients shouldn’t wait,
because the DKA may become even more severe by the time they’re
admitted.
We all need to keep in mind that most people are going to be okay,
with or without diabetes—although, tragically, some will die. As a
healthcare provider, I am encouraging my patients to use this time to
take extra good care of themselves, to learn to optimize their diabetes
control when not being distracted by going out to social events, dinner,
or work.
I think we are helping our patients establish a new baseline that
will hopefully translate into sustained health over time. Please be sure
to take care of yourselves, your families, and your patients. Be well.
Anne L. Peters, MD, is a professor of medicine at the University
of Southern California (USC) Keck School of Medicine and director of the
USC clinical diabetes programs. She has published more than 200
articles, reviews, and abstracts, and three books, on diabetes, and has
been an investigator for more than 40 research studies. She has spoken
internationally at over 400 programs and serves on many committees of
several professional organizations.
https://www.medscape.com/viewarticle/928425#vp_1