Laboratory results obtained in the emergency department revealed a moderate increase in troponin I (0.16 μg/L; normal value < 0.04 μg/L), a significant elevation in brain natriuretic peptide (BNP) (2240.7 ng/L; normal value 0–35 ng/L), and increased D-dimer levels (12.1 mg/L; normal value 0–0.5 mg/L); additionally, she presented with hypomagnesaemia, hypernatremia, normal renal function, and a normal complete blood count (Table 1). Here, NPPB is linked to Hypernatremia.