NU263CL Unit 10 Sulfonylurea Hypoglycemia Case Example

A Glucose of 38 on the Kitchen Floor, Then Again at Midnight: A Case Analysis of Sulfonylurea Hypoglycemia in a Composite 82-Year-Old Woman Living Alone, From the Emergency Department Through a Night of Recurrences to the Question of Whether She Can Go Home

[Student Name]

Purdue University Global

NU263CL: Medical-Surgical Nursing III Clinical

Unit 10 Case Analysis

[Instructor Name]

[Date]

The patient is composite; values and times are bracketed where illustrative, and medication and discharge decisions belong to the provider and team.

Part One, 1500: Arrival

[Mrs. Q.], composite, 82, type 2 diabetes on metformin; glyburide added [six] weeks ago by a new provider. She was discovered by the woman next door, lying confused and sweaty between the table and the sink. Paramedics measured a glucose of [38] and gave IV dextrose; by arrival she was alert, glucose [142], and asking to go home to feed her cat. Creatinine [1.7], up from [1.1] three months ago. She had eaten little for two days with a cold.

How the Sulfonylurea Did It

Sulfonylureas make the pancreas release insulin regardless of the blood glucose. Glyburide acts for a long time, and its active products are cleared by the kidneys. With her kidney function lower than before and her eating reduced by illness, the drug kept insulin high when she had nothing to match it. Older adults are particularly vulnerable to this, and the current Beers Criteria advise against sulfonylureas, glyburide most of all, for older people, given how long their lows can last (American Geriatrics Society Beers Criteria Update Expert Panel, 2023).

Part Two, 1800 to 0200: The Recurrences

At [1800], glucose [68]; she was eating dinner. At [2100], [74]. At [0000], she was found sweaty and drowsy with a glucose of [42]. More dextrose was given and a continuous dextrose infusion started as ordered.

She looked well enough to go home at 1500; the drug in her body did not care how she looked.

Dextrose raises glucose, but in a patient taking a sulfonylurea it also stimulates more insulin release, which can lead to repeated lows. Octreotide blocks insulin release from the pancreas; in a randomized trial in emergency department patients with sulfonylurea-induced hypoglycemia, adding octreotide to standard treatment kept glucose higher over the first eight hours (Fasano et al., 2008). The provider ordered octreotide at [0100].

Part Three: Potassium's Hidden Effect

Her potassium was [4.1] on arrival and [3.2] at [0600]. Dextrose and the insulin it triggers both move potassium into cells, so a long dextrose infusion can lower potassium without any loss from the body. Low potassium adds weakness and rhythm risk in an 82-year-old. The nurse reported it, and replacement was given as ordered (Harding et al., 2023).

A Ceiling Set for Her

Glucose checks were set every [hour] overnight, with a call threshold of [70] and a target range of [100] to [180] on the infusion. The team also set a ceiling: if she needed more than [one] additional dextrose bolus overnight despite the infusion and octreotide, the provider would be called to reassess.

Part Four: Discharge by Criteria

She asked every morning to go home. The team agreed to discharge only when these criteria were met: no glucose below [70] for [24] hours after the dextrose infusion and octreotide were stopped; eating at least half of each meal; glyburide stopped and replaced with a safer plan; kidney function improving; and a safe arrangement at home. Her home question was the hardest. She lives alone, and the neighbor who found her checks on her only every few days. The social worker arranged a daily phone call from her daughter, who lives two hours away, a medical alert pendant and a home health nurse visit within [48] hours. Her daughter was taught the signs of low glucose.

Why She Asked to Go Home

Her request was not confusion; it was her cat, her independence and a fear that a hospital stay would lead to a nursing home. The nurse acknowledged those reasons, arranged for the neighbor to feed the cat and explained that staying one or two nights was what would let her go home safely and stay there. Taking her reasons seriously made her more willing to stay through the night of recurrences.

What the Nurse Watched Overnight

Hourly glucose checks, mental status at each check, sweating or tremor between checks, the dextrose infusion rate, potassium at [0600] and her intake of the evening snack. Any glucose under [70] was treated at once and reported, along with the time and the amount of dextrose given.

What This Case Teaches About Older Adults

Three things combined: a drug that lasts a long time, kidneys that cleared it more slowly than before and a cold that cut her eating. None of them alone would have caused the fall. Medication reviews for older adults should ask what happens to each drug if the person stops eating for two days.

Outcome

She met the criteria on day [three]. Glyburide was stopped, metformin continued at a reduced dose for her kidney function, and she went home with a glucose meter, a log and her pendant.

References

American Geriatrics Society Beers Criteria Update Expert Panel. (2023). American Geriatrics Society 2023 updated AGS Beers Criteria for potentially inappropriate medication use in older adults. Journal of the American Geriatrics Society, 71(7), 2052-2081. https://doi.org/10.1111/jgs.18372

Fasano, C. J., O'Malley, G., Dominici, P., Aguilera, E., & Latta, D. R. (2008). Comparison of octreotide and standard therapy versus standard therapy alone for the treatment of sulfonylurea-induced hypoglycemia. Annals of Emergency Medicine, 51(4), 400-406. https://doi.org/10.1016/j.annemergmed.2007.06.493

Harding, M. M., Kwong, J., Hagler, D., & Reinisch, C. (2023). Lewis's medical-surgical nursing: Assessment and management of clinical problems (12th ed.). Elsevier.