HN has various meanings in the Medical category. Discover the full forms, definitions, and usage contexts of HN in Medical.
Consisting of different elements.
MedicalHyponatremia, also spelled hyponatraemia, is a low sodium level in the blood. Symptoms can vary from none to severe. Mild symptoms include a decreased ability to think, headaches, nausea, and poor balance. Severe symptoms include confusion, seizures, and coma. Normal serum sodium levels are 135–145 mmol/L.
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