One of the most common disease states in Long Term Care is Diabetes Mellitus Type 2. We always focus on obtaining glycemic control for these patients. However, often we forget that some of the most common classes of medications used to treat other disease states in diabetic patients, can disrupt the glucose levels. This may require extra monitoring of glucose levels or an adjustment of diabetic medications. Below are five commonly-used medication classes that should be reviewed when prescribing for your diabetic resident:
1. Glucocorticoids
Medications such as prednisone or methylprednisolone are some of the most commonly known offenders of affecting glycemic control in diabetics and even causing new onset diabetes or steroid induced diabetes. Management of glucose depends on duration of glucocorticoid therapy, and how well the patient’s glucose was controlled prior to initiating therapy.
Tips:
- Metformin can help in managing glucose for short duration of glucocorticoid therapy.
- Initiation of a short acting insulin or NPH might be the preferred option for patients
with uncontrolled diabetes. - Use of continuous glucose monitoring devices is also particularly helpful for
uncontrolled diabetes. - If glucocorticoids are tapered off, the diabetic treatments should also be adjusted as
needed to ensure hypoglycemia does not occur.
2. Antipsychotics
Many drugs in this class can cause weight gain as a common side effect. As we know, obesity is a risk factor in contributing to or developing diabetes. Antipsychotics can also lead to insulin resistance. Some antipsychotics that more commonly affect glucose are Clozapine, Olanzapine, and Haloperidol. Alternatively, Ziprasidone is known to have less effects on glucose.
Tips:
- The best approach with antipsychotics is to use ones that have less weight gain or the
“third-generation antipsychotics” which include: - Abilify (Aripiprazole) – has the most coverage of FDA approved indications
- Rexulti (Brexpiprazole)
- Vraylar (Cariprazine)
- Caplyta (Lumateperone)
3. Diuretics
Specifically, thiazide diuretics are a common first line therapy and adjunct in the management of high blood pressure. Some thiazide diuretics are Metolazone and Hydrochlorothiazide. Thiazide diuretics can also cause increased glucose levels in addition to affecting electrolyte levels such as potassium (hypokalemia). Studies show that hypokalemia due to thiazide diuretics can cause diabetes and reduce insulin sensitivity.
Tips:
- Consider low dose diuretic since the side effect is dose dependent - a low dose
thiazide may not cause hypokalemia and therefore reduce risk of diabetes. - Potassium levels should be monitored and manage hypokalemia with potassium
supplements.
4. Statins
It is likely that your diabetic resident has other comorbidities such as high cholesterol which require treatment with statins. Statins are also on the list of medications that can reduce insulin secretion and sensitivity. In diabetics, statins may increase the hemoglobin A1C slightly. However, if you look at the risk vs benefit of statin therapy vs the development of diabetes, statin therapy should be initiated as the benefit to prevent cardiovascular disease and can outweigh risks with hyperglycemia.
Tips:
- Monitoring of blood glucose and diabetic medication dose adjustments can be
effective. - Atorvastatin has been linked to a greater effect on hemoglobin A1C levels.
- Pitavastatin is associated with lower risk of new onset diabetes (but not the best data
on cardiovascular risk reduction). - Pravastatin and Lovastatin are other low potency options for statins.
5. Beta Blockers
Beta blockers are commonly used for high blood pressure, coronary artery disease, and heart failure. Metoprolol and atenolol are associated with increasing hemoglobin A1C but also associated with increased risk of hypoglycemia. It is also important to keep in mind that beta blockers can mask the symptoms of hypoglycemia.
Tips:
- Blood glucose monitoring can be beneficial especially with hypoglycemia risk.
- Availability of Glucagon for managing hypoglycemic episode.
- Education on managing hypoglycemia is important for diabetic patients that are
taking Metoprolol or Atenolol. - Consider Carvedilol, Nebivolol, and Labetalol which show less effects on glucose.