To detect the serum procalcitonin (PCT) level and determine its relationship with the infarct volume in young patients with acute cerebral infarction.
According to the infarct volume, young patients with acute cerebral infarction were divided into large group, intermediate group, and small group. The severity of clinical symptoms was determined according to the National Institute of Health Stroke Scale (NIHSS) score. Healthy young people were selected as the control group. Serum PCT levels were measured. The relationship among PCT, volume, and NIHSS score was analyzed.
PCT in observation group was significantly higher than that in control group (t = 6.879, P = 0.011), and PCT in severe group was significantly higher than in mild group (t = 6.978, P = 0.016). PCT in large cerebral infarction group was higher than that in intermediate and small-size infarct group (P = 0.0036 and P < 0.0001, respectively), and PCT in intermediate cerebral infarction group was higher than that in small-size infarct group (P = 0.0024). In observation group, the PCT level was positively correlated with both NIHSS (r = 0.793, P = 0.022) and infarction volume (r = 0.649, P = 0.007).
The level of PCT in young patients with acute cerebral infarction may be related to the inflammatory reaction of the cerebral artery and positively related to the volume of cerebral infarction and NIHSS score. To some extent, PCT concentration can predict the disease severity of acute cerebral infarction.

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