Table 2 Diagnostic criteria for complications

Renal anemia

①For adults residing above sea level: male hemoglobin (Hb) < 130 g/L, unpregnant female Hb < 120 g/L, pregnant female Hb < 110 g/L; ② Based on the following hematocrit values, red blood cell count, mean corpuscular volume, mean corpuscular Hb, mean corpuscular Hb concentration, reticulocyte count, urobilinogen, urine bilirubin, serum total bilirubin, direct bilirubin, indirect bilirubin, and lactic dehydrogenase, exclude nutritional anemia, hemolytic anemia, bemorrhagic anemia, thalassemia, aplastic anemia, and hematologic malignancy; ③ Previous diagnosis of renal anemia in the HIS system;④The patient is currently using erythropoietin; ⑤ The patient can be diagnosed if they meet both criteria ① and ③, or any one of criteria ③ and ④

Hyperphosphatemia

①The last three and the most recent examinations of serum inorganic phosphorus all show levels above 1.78 mmol; ② Previous diagnosis of hyperphosphatemia recorded in the HIS system; ③ The patient can be diagnosed if they meet either criterion above

Secondary hyperparathyroidism

①Two consecutive iPTH examinations show levels above 300 pg/L, or iPTH is continuously rising; ② There is a previous diagnosis of secondary hyperparathyroidism in the HIS system; ③ The patient can be diagnosed if they meet either criterion above

CKD-MBD

①Abnormalities detected in serum calcium, phosphorus, parathyroid hormone, or vitamin D;②Abnormalities in bone turnover, mineralization, mass, linear growth, or bone strength; ③ The patient can be diagnosed if they meet either criterion above

Cardiovascular complications

①Persistent abnormal BP (hypertension or hypotension); ②Chronic heart failure, characterized by symptoms of systemic congestion, pulmonary congestion, or hypoperfusion, or abnormal findings on echocardiography; ③ Arrhythmia; ④ Previous diagnosis of any of the above three conditions in the HIS system; ⑤ The patient can be diagnosed if they meet any one of the four criteria above