Endocrinology
Physician discussions on diabetes management, thyroid disorders, hormonal imbalances, and metabolic conditions.
Recent Discussions
What patient factors are most important when considering who needs a broader workup for osteoporosis prior to starting therapy?
A workup to rule out secondary causes must be done prior to starting therapy for osteoporosis. A good history and exam are recommended to look for any clues for modifiable factors. At a minimum, one should do CMP, 25-OH vitamin D, TSH, and a 24-hour urinary calcium or calcium/creatinine ratio should...
Has the recent large observational data suggesting that continuing metformin during hospitalization is associated with lower post-discharge mortality and hypoglycemia changed your approach to holding it on admission in stable, non-critically ill patients with T2DM?
I really like this paper, but I don't think it is plausible that a 5-day difference in receipt of metformin (the median length of stay was 5 days) could really affect 90-day mortality.The study question is a good one because the evidence that metformin causes lactic acidosis is extremely limited. In...
Is lithium-induced hypothyroidism typically due to the production of autoimmune Hashimoto's antibodies or to the disruption of thyroid hormone production?
The answer is both. Lithium-induced hypothyroidism occurs in about 15% of patients treated with lithium. Lithium is concentrated 2-3 times higher than in serum due to uptake by the sodium iodide transporter. Hypothyroidism, in part, is due to lithium interrupting thyroid hormone production and relea...
How do you decide when to evaluate for central hypothyroidism in a patient with low-normal TSH and low free T4?
The differential in these patients is 1) mild subclinical hyperthyroidism 2) central hypothyroidism 3) normal variant related to assay detection limitations. It would be important to obtain a good history and try to identify any hypothyroid or hyperthyroid symptoms. Having said that, patients will u...
How do you recommend mitigating the risks of using beta blocker and clonidine therapy in combination for management of hypertension?
Beta blockers vary in lipophilicity, which affects blood-brain barrier permeability. Propranolol and metoprolol readily cross the blood-brain barrier, while other beta-blockers like nebivolol do not. The CNS side effects of fatigue, depression, and insomnia are more likely to worsen if using a lipop...
Do you use FRAX score or BMD scores to determine whether patients with primary hyperparathyroidism would benefit from parathyroidectomy to reduce fracture risk?
I use FRAX for all patients. Basing a diagnosis of osteoporosis simply by a patient having one T-score >2.5 SD below the mean of young normal persons diagnoses only 1/3 of women older than 50 who experience a fracture of the spine, hip or wrist. FRAX uses femoral neck BMD values, as well as other re...
How do you approach the choice of basal-bolus insulin vs correctional insulin alone to manage hyperglycemia in a hospitalized older adult with type 2 diabetes and significant frailty?
Frail older adults with type 2 diabetes, compared to their less-frail counterparts, may have less predictable oral intake, and you may have more difficulty obtaining an accurate medication reconciliation. You may need to review facility records or speak to multiple collateral historians to find out ...
Would you recommend getting a PET scan or an iodine whole body scan in a patient with recurrence of thyroid cancer in the neck previously treated with total thyroidectomy and 2 radioactive iodine ablations in the past?
The usual patient who has had 2 doses of I131 is not usually iodine-avid or iodine-sensitive. You will be able to determine with this information: When were the 2 doses of I-131? What did the post-therapy scan show after the last dose of I-131 and Was the tumor responsive either by Tg or tumor size...
Do patients with hypogonadism commonly present with dizziness?
"Brain fog" and/or fatigue, but none have complained of dizziness.
Does solid/trabecular type papillary thyroid carcinoma pathology confer a higher risk of recurrence and warrant radioactive iodine ablation therapy?
Solid variant papillary thyroid carcinoma (SVPTC) is a rare subtype of PTC and has been noted particularly in pediatric thyroid cancers resulting from exposure to radiation (e.g., Chernobyl). In adults, it tends to occur in somewhat older patients, which may be attributed to some reports of more agg...