Clinical Cases  ·  Endocrinology, Diabetes and Metabolism I  ·  Diabetes Mellitus/Hypoglycemia
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Endocrinology

Diabetes Mellitus/Hypoglycemia

25 cases on hormone-replacement, oral, and injectable pharmacotherapy decisions across type 1, type 2, gestational, and secondary diabetes, plus hypoglycemia management — choose a case below to open its full multi-voice debate.

EndocrinologyDiabetes Mellitus/Hypoglycemia
Metformin at eGFR 24: A Number That May Not Be Real

A progressive renal decline and a week of poor intake land on the same visit, and the disagreement isn't really about whether metformin is safe below eGFR 30 — it's about whether today's number can be trusted enough to have that argument at all.

Case 0001
EndocrinologyDiabetes Mellitus/Hypoglycemia
SGLT2i or GLP-1 RA: Two Patients, Two Different Tipping Factors

Both patients face the same guideline-neutral fork between two cardioprotective drug classes. The disagreement isn't about which class is generally better — it's about which patient-specific detail should be allowed to override guideline neutrality, and the two cases pull in opposite directions.

Case 0002
EndocrinologyDiabetes Mellitus/Hypoglycemia
Tirzepatide or the Operating Room: How Long Does a Drug Trial Get?

He clearly qualifies for surgery. The real disagreement is whether a genuinely potent pharmacologic option deserves a real, time-bounded trial first — and what happens if nobody sets the terms of that trial in advance.

Case 0003
EndocrinologyDiabetes Mellitus/Hypoglycemia
An Off-Label Request in Type 1 Diabetes, and a History That Changes the Answer

The drug class carries a real, trial-confirmed ketoacidosis risk in type 1 diabetes — but her own chart holds a detail that determines whether that risk is abstract or concentrated, and nobody has asked her about it yet.

Case 0004
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Ten-Dollar Drug and a Nine-Hundred-Dollar One

The safer-on-paper drug costs ninety times more than the one with real hypoglycemia risk. The disagreement isn't about which drug is better in the abstract — it's about which one he'll actually be able to take.

Case 0005
EndocrinologyDiabetes Mellitus/Hypoglycemia
The Drug With the Best Liver Evidence and a Cardiac Asterisk

Pioglitazone reverses liver fibrosis better than anything else in the diabetes formulary. It also raises heart failure risk, and his echocardiogram just gave that risk a face.

Case 0006
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Tight A1c That Stopped Being Good News

Her A1c has been called excellent for years. At 86, with a shrinking appetite and three hypoglycemic episodes in two months, the same number has quietly become the more dangerous one in the room.

Case 0007
EndocrinologyDiabetes Mellitus/Hypoglycemia
Metformin on Hospital Day One: A Diagnosis Code Versus a Physiologic State

The historical fear was never really about heart failure as a diagnosis — it was about hypoperfusion. He doesn't clearly have that today, but nobody yet knows what the next 48 hours hold.

Case 0008
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Labeled Caution That Doesn't Ask What Kind of Pancreatitis

The label says prior pancreatitis, full stop. His actual history is more specific than that — and whether that specificity should change the decision is the real disagreement.

Case 0009
EndocrinologyDiabetes Mellitus/Hypoglycemia
The Bypass That Fixed Her Diabetes Now Overshoots the Other Way

Her surgery worked exactly as intended. What nobody fully warned her about is that the same anatomy can overcorrect years later — and a near-syncope behind the wheel means this can't wait for a slow answer.

Case 0010
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Year on the Best Available Technology, and Two Events It Didn't Stop

He's already tried the most advanced non-surgical option there is. The disagreement isn't whether transplant could help him eventually — it's whether one real year on one specific system counts as having exhausted the alternative.

Case 0011
EndocrinologyDiabetes Mellitus/Hypoglycemia
Her Glucose Only Spikes in the Afternoon, and That's the Whole Clue

Her fingersticks trace the exact shape of her prednisone dose working through the day. The real question isn't whether to treat the hyperglycemia — it's whether to match the insulin to that shape or default to a flat, all-day coverage that doesn't.

Case 0012
EndocrinologyDiabetes Mellitus/Hypoglycemia
The Better Regimen, and a Scheduled Window It Wasn't Studied Around

Basal-bolus wins the general inpatient argument decisively. The real question is narrower: does a scheduled surgical NPO window, with its own specific timing uncertainty, call for a different answer — or just a more careful version of the same one?

Case 0013
EndocrinologyDiabetes Mellitus/Hypoglycemia
Diabetic Ketoacidosis With a Second Patient in the Room

The DKA protocol itself is well validated. What it wasn't built around is a second patient whose distress can show up on a monitor before the mother's own labs tell the whole story.

Case 0014
EndocrinologyDiabetes Mellitus/Hypoglycemia
An Oral Option, a Placenta That Doesn't Screen Everything Out

The trial data on short-term safety are reassuring. What isn't yet answered is what a drug that crosses the placenta means twenty years from now for the child who never got a vote in this decision.

Case 0015
EndocrinologyDiabetes Mellitus/Hypoglycemia
A New Diagnosis at 28, and a Faster Clock No One Mentioned

Two different arguments point at the same aggressive answer for him — but they aren't the same argument, and which one the team actually relies on matters for the next patient whose age and A1c don't agree.

Case 0016
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Real Shot at Remission, and a Real Chance It Doesn't Land

Her timing genuinely favors remission. What the same trial that gives her hope also shows, honestly, is that most participants who tried it still didn't get there — and that's the real disagreement underneath an otherwise hopeful conversation.

Case 0017
EndocrinologyDiabetes Mellitus/Hypoglycemia
A DKA Presentation That May Not Mean Type 1 Diabetes

He arrived looking like a new type 1 diagnosis. His labs and phenotype tell a more specific story — one where the insulin he's on now may not be the insulin he needs a year from now.

Case 0018
EndocrinologyDiabetes Mellitus/Hypoglycemia
Just Outside the Subgroup Where the Trial Found the Clearest Benefit

The trial data are clear about who benefits most from metformin. He's close to that line but not quite on it — and his own history of two failed lifestyle attempts may matter more than which side of the line he falls on.

Case 0019
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Heart Failure Warning Built on One Drug in the Class

The warning on the bottle covers the whole class. The trial that actually found the risk was run on a different drug — and the one built specifically to test his own drug came back reassuring.

Case 0020
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Number Above the Threshold, an Exam That Doesn't Match It

The guideline threshold says insulin. Her exam says something less urgent. The real disagreement isn't about the number itself — it's about which signal should actually drive today's decision.

Case 0021
EndocrinologyDiabetes Mellitus/Hypoglycemia
An A1c of 6.1% and a Glucose Log That Tells a Different Story

His A1c looks excellent. His own glucose log and two real hypoglycemic episodes say otherwise — and in end-stage renal disease, that gap between the number and the reality is a known, documented problem, not a fluke.

Case 0022
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Heart Drug That Can Quiet the Warning Bells for a Different Emergency

Every beta-blocker option treats his heart. The real disagreement is which one leaves him the clearest early warning the next time his blood sugar drops — and how much that should matter next to the cardiac evidence.

Case 0023
EndocrinologyDiabetes Mellitus/Hypoglycemia
A Diabetes Guideline Built for a Later Stage of Her Own Disease

The guideline's insulin-first logic is built around CFRD as it usually looks by the time it's caught. Her disease, caught early and mild, doesn't quite match the population the recommendation was written for — and the disagreement is about how much that should matter.

Case 0024
EndocrinologyDiabetes Mellitus/Hypoglycemia
The Same Drug Protecting His New Kidney Just Gave Him a New Diagnosis

Tacrolimus is doing exactly what it's supposed to do for his transplanted kidney. It may also be doing something to his glucose — and how much that should change his regimen depends on a risk profile only his transplant team can really read.

Case 0025
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