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Deprecated: Implicit conversion from float 231.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Aging+(Albany+NY) 2020 ; 12 (12): 11287-11295 Nephropedia Template TP
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Serum calcium as a biomarker of clinical severity and prognosis in patients with coronavirus disease 2019 #MMPMID32589164
Sun JK; Zhang WH; Zou L; Liu Y; Li JJ; Kan XH; Dai L; Shi QK; Yuan ST; Yu WK; Xu HY; Gu W; Qi JW
Aging (Albany NY) 2020[Jun]; 12 (12): 11287-11295 PMID32589164show ga
The aim of this study was to investigate the correlations between serum calcium and clinical outcomes in patients with coronavirus disease 2019 (COVID-19). In this retrospective study, serum calcium levels, hormone levels and clinical laboratory parameters on admission were recorded. The clinical outcome variables were also recorded. From February 10 to February 28, 2020, 241 patients were enrolled. Of these patients, 180 (74.7%) had hypocalcemia on admission. The median serum calcium levels were 2.12 (IQR, 2.04-2.20) mmol/L, median parathyroid hormone (PTH) levels were 55.27 (IQR, 42.73-73.15) pg/mL, and median 25-hydroxy-vitamin D (VD) levels were 10.20 (IQR, 8.20-12.65) ng/mL. The serum calcium levels were significantly positively correlated with VD levels (P =0.004) but negatively correlated with PTH levels (P =0.048). Patients with lower serum calcium levels (especially =2.0 mmol/L) had worse clinical parameters, higher incidences of organ injury and septic shock, and higher 28-day mortality. The areas under the receiver operating characteristic curves of multiple organ dysfunction syndrome, septic shock, and 28-day mortality were 0.923 (P <0.001), 0.905 (P =0.001), and 0.929 (P <0.001), respectively. In conclusion, serum calcium was associated with the clinical severity and prognosis of patients with COVID-19. Hypocalcemia may be associated with imbalanced VD and PTH levels.