Is the dog:

A. Nothing it is appropriate to stop the medication for 3 days: Abrupt discontinuation of long-term, high-dose glucocorticoids suppresses the hypothalamic–pituitary–adrenal (HPA) axis. The body is unable to rapidly resume endogenous cortisol production. Even a short interruption can lead to serious physiological consequences.

B. He will go into thyroid storm: Thyroid storm is associated with uncontrolled hyperthyroidism and is unrelated to glucocorticoid withdrawal. There is no mechanism linking sudden cessation of steroids to acute thyroid hormone excess.

C. Nasojejunal tube: Placement of a nasojejunal tube is a medical intervention, not a physiological consequence of stopping glucocorticoids. It has no relevance to steroid withdrawal or adrenal function.

D. He will go into adrenal crisis: Chronic glucocorticoid therapy suppresses endogenous cortisol production by the adrenal glands. Sudden withdrawal can result in acute adrenal insufficiency, leading to hypotension, hypoglycemia, weakness, and shock. This is a medical emergency requiring prompt treatment.

E. His autoimmune disease will go into remission: Glucocorticoids suppress inflammation and immune activity; stopping them abruptly increases the risk of disease flare rather than remission. Rheumatoid arthritis symptoms often worsen when anti-inflammatory therapy is withdrawn. Remission would not be expected in this context.

A. Hypernatremia: Sodium levels are usually normal or low in AKI because impaired kidney function often causes fluid retention and dilutional hyponatremia. Hypernatremia is less common unless influenced by external sodium administration.

B. ECG changes: Electrolyte imbalances, particularly hyperkalemia, can lead to ECG abnormalities such as peaked T waves, widened QRS complexes, or arrhythmias. Continuous cardiac monitoring is essential for patient safety.

C. Hypotension: While hypotension can cause AKI (prerenal), once the patient has AKI, they are more likely to experience Hypertension due to fluid volume overload and the activation of the renin-angiotensin-aldosterone system.

D. Pulmonary edema: Volume overload can lead to pulmonary congestion, crackles, and respiratory distress. Monitoring respiratory status and oxygen saturation is critical to detect and manage this complication.

E. Urine with high specific gravity: In intrarenal AKI (Acute Tubular Necrosis), the kidneys lose their ability to concentrate urine. The specific gravity becomes "fixed" at around 1.010, which is the same as the osmolality of plasma.