Extrapontine myelinolysis caused by rapid correction of pituitrin-induced severe hyponatremia: A case report

Table 1 Trends of the patient's clinical and laboratory data

Day	Serum K+ (mmol/L)	Serum Na+ (mmol/L)	Serum osmolality (mOsm/kg)	1.5% NaCl (mL)	Urine output (L)
1	4.12	140	298	_	2.1
2	4.10	132	284	_	1.8
3	3.63	116	248	500	1.6
4	3.29	113	240	750	1.1
5	3.35	119	251	750	0.9
6	4.07	137	288	_	2.1
7	3.80	141	299	_	2.2
8	4.52	137	292	_	1.6

Serum osmolality = 2 (Na⁺ + K⁺) + Glucose (mmol/L) + Blood urea nitrogen (mmol/L).