Endocrine Function Quiz (June 2025)

1. A 20 year old man with a head injury from a MVA is scheduled for craniotomy and evacuation of a subdural hematoma. When you arrive in the ICU to evaluate patient you find his foley bag full of clear urine. HR is 120 bpm, BP is 90/60, and serum sodium is 154 mEq/L. What is the most likely cause for the findings?

• Diabetes Insipidus

• Traumatic renal injury

• Mannitol administration

• Dehydration

Following a total thyroidectomy, a 38 year old woman   develops hyperthermia and tachycardia in the recovery room. After several other differential diagnosis are ruled out, thyroid storm is suspected. Which of the following treatment options is initiated first?

• Volume, electrolyte and glucose replacement

• Cooling blankets, ice packs, and aspirin to decrease the temperature

• Iodide to inhibit thyroid hormone synthesis

•   Bisoprolol to inhibit the peripheral conversion of T3 to T4

58 year old man has been diagnosed with pheochromocytoma in his right adrenal gland.  The preferred vasodilator for preoperative treatment of hypertension and paroxysms associated with pheochromocytoma is

•     Nitroprusside

•    Clonidine

•    Labetalol

• Phenoxybenzamine

A 60 year old with pheochromocytoma has all of these reasonable goals prior to anesthesia Except?

• Preoperative treatment with phenoxybenzamine for usually 10 to 14 days or longer until blood pressure and paroxysmal symptoms are resolved.

• Resolution of nonpermanent ST-T wave changes on the electrocardiogram

• Stable blood pressure not greater than 156/90 mmHg for atleast 48 hours prior to surgery

• No orthostatic blood pressure changes on standing

A 58 year old man is in the recovery room after undergoing laparoscopic resection of pheochromocytoma. The least likely expected postoperative complication is

• Hypotension  

• Hypertension

•   Hypoglycemia

• Hyperglycemia

Thyrotoxicosis can cause?

• Increase of basal metabolic rate as much as 60% to 100%

• Decreased tidal volume

• Decreased intracellular glucose

• Decreased cardiac output

A 40 year old female presents for a thyroidectomy for Graves disease. Her preoperative preparation should include:

• Administration of potassium iodide plus propranolol for 10 days

•      A 1 week course of thyroxine (T4)

•   A three day course of propylthiouracil

• Iodine -131 treatment

A 40 year old woman with history of Graves disease is in the recovery room after undergoing a Ct Scan under general anesthesia. While in the recovery room, her blood pressure drops to 80/55 mmHg, her heart rate increases to 140 bpm, and she becomes agitated and complains of difficulty breathing and feeling hot. The most likely diagnosis for these signs is

• Thyroid storm

•   Carcinoid syndrome

• Malignant Hyperthermia

• Pheochromocytoma

Which of the following is true regarding Type 1 Diabetes Mellitus?

• is characterized by a relative lack of insulin plus resistance to endogenous insulin

• Always requires insulin

• Affects 95%of patients with diabetes

• Can be controlled with diet, weight loss and oral hypoglycemic agent

A 65 year old diabetes mellitus patient should include which of the following preoperative assessment?

• An assessment of functional status

• 24 hour creatinine clearance

• Pulmonary function test

• Cancellation of the surgical case if HbA1C >10%