Laboratory investigations revealed electrolyte disturbances characterized by hyponatremia (Na+: 130.7 mmol/L), elevated creatine kinase-MB (7.43 μg/L), increased β-hydroxybutyrate (0.94 mmol/L), and markedly elevated B-type natriuretic peptides (>5,000.00 pg/mL), with the cTnI assessment demonstrating normal levels. Here, TNNI3 is linked to Hyponatremia.