目的 分析轮状病毒性腹泻患儿心肌受损情况和所伴随生化检验指标改变。 方法 2008年7月－2010年7月收治腹泻患儿80例，年龄6～27个月，平均12.9个月。其中有50例为轮状病毒腹泻（A组），30例为非轮状病毒性腹泻（B组）。A组患儿均符合轮状病毒腹泻诊断标准，有心肌损伤的异常指标但达不到心肌炎诊断标准者诊断为心肌损害。B组患儿有水样腹泻，但症状较轻，病程较短，轮状病毒抗原检测阴性。用全自动生化分析仪测定血清谷草转氨酶、乳酸脱氢酶、肌酸磷酸激酶和肌酸磷酸激酶同工酶，免疫亲和层析法测定血清肌钙蛋白值，并进行心电图检查。 结果 A组50例轮状病毒性腹泻患儿中，44例（88.0%）存在心肌损害，其血清谷草转氨酶（74.32 ± 13.77）U/L、肌酸磷酸激酶（52.01 ± 10.37）U/L、肌酸磷酸激酶同工酶（273.43 ± 27.55）U/L均升高，且明显高于B组[（24.98 ± 7.03）、（17.11 ± 6.52）、（151.46 ± 16.52）U/L]，差异有统计学意义(P＜0.05)。两组患儿的乳酸脱氢酶变化差异无统计学意义(P＞0.05)。 结论 轮状病毒性腹泻患儿往往伴有心肌损害及相应的血液生化检测指标改变；以肌酸磷酸激酶同工酶作为近期心肌损害的诊断指标更为特异和敏感。
ObjectiveTo investigate the correlations between tumor necrosis factor-α (TNF-α) and lipopolysaccharide (LPS) with acute myocardial dysfunction after severe thoraco-abdominal injuries and possible mechanisms. MethodsClinical data of 82 patients with severe thoraco-abdominal injuries who were admitted to the 253rd Hospital of People's Liberation Army from January 2009 to June 2012 were retrospectively analyzed,whose trauma index (TI) were all above or equal to 17 points. Patients with concomitant brain injuries and patients who were brought in dead were excluded from this study. There were 58 male and 24 female patients with their age of 16-76 (43.59±16.33) years. There were 17 patients with open injuries and 65 patients with closed injuries. There were 23 patients with fall injuries,47 patients with traffic injuries,8 patients with blunt injuries,and 4 patients with penetrating injuries. The time from injury to admission was 1.51±0.52 hours. Blood creatine kinase-MB (CK-MB) cardiac troponin T (cTnT) TNF-α and LPS were examined during emergency treatment,and the correlations between the results were analyzed. ResultsMyocardial dysfunction was shown by CK-MB of 158.74±31.59 U/L and cTnT of 496.25±58.46 pg/ml. Injury factors were TNF-α of 36.41±18.09 ng/ml and LPS of 343.66±106.02 U/L. CK-MB was positively correlated with TNF-α and LPS with the correlation coefficient (r) of 0.923 1and 0.883 2 respectively. cTnT was also positively correlated with TNF-α and LPS with r of 0.955 6 and 0.889 1 respectively. ConclusionBoth TNF-α and LPS participate in the pathogenesis and development of acute myocardial dysfunction after severe thoraco-abdominal injuries. Early intervention against TNF-α and LPS may alleviate acute myocardial dysfunction and improve patients' survival rate after severe thoraco-abdominal injuries.