Analysis of the incidence and influencing factors of hyponatremia before 131I treatment of differentiated thyroid carcinoma

Figure 1 Comparison of serum sodium and eGFR levels before surgery and ¹³¹I treatment. A: The serum sodium levels in males and females before ¹³¹I treatment were lower than those before surgery; B: The serum sodium levels in patients aged more than 60 and less than 60 years showed a decrease before ¹³¹I treatment; C: The eGFR in males and females decreased before ¹³¹I treatment compared with that before surgery; D: The eGFR in patients over 60 and under 60 years decreased before ¹³¹I treatment compared with that before surgery.