目的 基于随机森林方法构建甲状腺功能减退（简称甲减）患病风险预测模型。方法 从MIMIC-IV数据库纳入5 735名甲减患者为病例组,4 803名非甲减患者为对照组,基于随机森林模型进行建模。同时利用逻辑回归、贝叶斯正则化神经网络、XGBoost作为比较模型。最后用准确率、F1分数、精确率、召回率、特异性以及AUC值评价四个机器学习模型性能。结果 随机森林模型准确率为0.85,F1分数为0.84,精确率为0.84,召回率为0.84,特异性为0.86,AUC值为0.91。在该模型中,促甲状腺激素、年龄、绝对淋巴细胞计数、血液中红细胞数、中性白细胞、性别、碱性磷酸酶、丙氨酸氨基转移酶、嗜酸性粒细胞绝对计数、尿素氮为甲减患者诊断重要性排前10的指标。结论 采用随机森林方法构建的甲减患病预测模型为甲减的早期诊断有潜在应用价值。

Objective To construct a risk prediction model for hypothyroidism based on the random forest model．Methods A total of 5 735 hypothyroidism patients were included from the MIMIC-IV database as the case group, and 4 803 non-hypothyroidism patients were included as the control group．Random forest models were constructed for both groups, and logistic regression, Bayesian regularized neural network, and XGBoost were used as comparative models．The performance of the four machine learning models was evaluated using accuracy, F1 score, precision, recall, specificity, and AUC value．Results The random forest model had an accuracy of 0.85, an F1 score of 0.84, a precision of 0.84, a recall of 0.84, a specificity of 0.86, and an AUC value of 0.91．In this model, thyroid-stimulating hormone, age, absolute lymphocyte count, red blood cell count in blood, neutrophil, gender, alkaline phosphatase, aspartate aminotransferase, absolute eosinophil count, and blood urea nitrogen were the top 10 indicators for diagnosing hypothyroidism patients．Conclusions The hypothyroidism disease prediction model constructed using the random forest method has potential application value for the early diagnosis of hypothyroidism．

目的 探讨不同贫血类型患者铁蛋白水平、甲状腺功能检测结果对比分析。方法 前瞻性选取2018年11月—2021年11月我院收治的240例贫血患者作为研究对象。将患者分为小细胞低色素性贫血组（n=75）,正细胞性贫血组（n=100）和大细胞性贫血组（n=65）。检查患者甲状腺功能[甲状腺素（TSH）、游离三碘甲腺原氨酸（FT₃）、游离甲状腺素（FT₄）]和铁蛋白（SF）表达水平。采用Spearman检验进行相关性分析;采用Logistics回归模型进行回归分析。结果 3组患者红细胞（RBC）、血红蛋白（Hb）、平均红细胞容积（MCV）、红细胞平均血红蛋白浓度（MCHC）、平均红细胞血红蛋白含量（MCH）、血清肌酐（Scr）间存在差异（P<0.05）;大细胞性贫血组TSH、FT₃和SF低于正细胞性贫血组和小细胞低色素性贫血组（P<0.05）,而FT₄高于正细胞性贫血组和小细胞低色素性贫血组（P<0.05）;贫血类型与TSH、FT₄、FT₃和SF呈正相关（P<0.05）;多因素Logistics回归分析结果显示,TSH、FT₄、FT₃和SF在3个模型中均为独立危险因素（P<0.05）。结论 不同贫血类型患者间甲状腺功能和铁蛋白表达水平存在显著差异,大细胞性贫血组TSH、FT₃和SF低于正细胞性贫血组和小细胞低色素性贫血组,而FT₄更高,甲状腺功能指标和铁蛋白均是各种类型贫血发生的危险因素。

Objective To explore the comparative analysis of ferritin level and thyroid function detection results in patients with different types of anemia．Methods A total of 240 anemia patients admitted to our hospital from November 2018 to November 2021 were prospectively selected as research objects．The patients were divided into microcytic hypochromic anemia group（n=75）,normocytic anemia group（n=100）,and macrocytic anemia group（n=65）．The expression levels of thyroid function[thyroxine（TSH）,free triiodothyronine（FT₃）,free thyroxine（FT₄）]and ferritin（SF）were examined．Correlation analysis was performed by Sperman test．The logistic regression model was adopted for regression analysis．Results There were significant differences in red blood cell,hemoglobin,mean corpuscular volume,mean corpuscular hemoglobin concentration,mean corpuscular hemoglobin content and serum creatinine among three groups（P<0.05）．TSH,FT₃ and SF in macrocytic anemia group were significantly lower than those in normocytic anemia group and microcytic hypochromic anemia group（P<0.05）,while FT₄ was significantly higher than that in normocytic anemia group and microcytic hypochromic anemia group（P<0.05）．The type of anemia was positively correlated with TSH,FT₄,FT₃ and SF（P<0.05）．The results of multi-factor logistics regression analysis showed that TSH,FT₄,FT₃ and SF were independent risk factors in the three models（P<0.05）．Conclusions There were significant differences in thyroid function and ferritin expression levels among patients with different types of anemia．Macrocytic anemia group TSH,FT₃ and SF were lower than those in normocytic anemia group and microcytic hypochromic anemia group,while FT₄ was higher．Both thyroid function indexes and ferritin were risk factors for various types of anemia．

目的 探讨影响先天性甲状腺功能减低症患儿不同转归的早期因素。 方法 选取2013年12月—2017年3月期间在本中心筛查并确诊的先天性甲状腺功能减低症患儿共80例,经左旋甲状腺激素钠治疗2~3年后停药评估再随访1年以上者,根据疾病转归将患儿分为持续性甲低组(29例)与暂时性甲低组(51例)。对2组患儿的临床情况进行回顾性分析,寻求影响结局的早期因素。结果 持续性甲低与暂时性甲低患儿初筛促甲状腺激素值[ 63.89 (43.89, 114.25) vs 38.54 (27.27, 60.00) mIU/L]、促甲状腺激素恢复正常所需剂量[(4.29±1.46) vs (3.38±1.34) μg/(kg·d)]、早期甲状腺超声正常比例[58.6%(17/29)vs 90.2%(46/51)]差异有统计学意义(P<0.05)。其中初筛促甲状腺激素值(最佳临界值:37.825 mIU/L,AUC=0.745,灵敏度0.897,特异度0.490)和出生后第8个月左旋甲状腺激素钠给药剂量[最佳临界值3.38 μg/(kg·d),AUC=0.759,灵敏度 0.586,特异度 0.843]可早期区别持续性甲低与暂时性甲低患儿。结论 初筛促甲状腺激素值和出生后左旋甲状腺激素钠给药剂量对先天性甲状腺功能减低症患儿临床转归有早期预测作用。

Objective To investigate the early factors affecting different outcomes of children with congenital hypothyroidism (CH). Methods A total of 80 children with CH screened and diagnosed at Meizhou Maternal and Child Health Care and Family Planning Service Center between December 2013 and March 2017, who were treated with levothyroxine sodium for 2~3 years and then discontinued for assessment and followed up for over 1 year, were selected and divided into the permanent CH group (29 cases) and transient CH group (51 cases) according to disease outcomes. The clinical conditions of the children were retrospectively analysed to seek early factors affecting outcome. Results The initial screening thyroid hormone values [ 63.89 (43.89, 114.25) vs 38.54 (27.27, 60.00) mIU/L ], the required dose to restore normal thyroid hormone in permanent and transient CH group [(4.29±1.46) vs (3.38±1.34) μg/(kg·d)], and the proportion of early normal thyroid ultrasound [58.6% (17/29) vs 90.2% (46/51)] had significant differences(P<0.05). The initial screening thyroid hormone value (optimal threshold: 37.825 mIU/L, AUC=0.745, sensitivity 0.897 and specificity 0.490) and the levothyroxine sodium dosage at eighth month of age [optimal threshold 3.38 μg/(kg·d), AUC=0.759, sensitivity 0.586 and specificity 0.843] could early distinguish permanent and transient CH children. Conclusions Initial screening thyroid hormone values and postnatal levothyroxine sodium dosage had an early predictive effect on clinical outcome in children with CH.

目的 探讨新生儿高促甲状腺素血症转归与先天性甲状腺功能减低的相关性。方法 选择2014年4月—2015年4月在本院新生儿疾病筛查中心筛查并诊断为高促甲状腺激素血症的患儿120例,期间密切监测甲状腺功能指标变化。结果 将非治疗组所有患儿按照入组该实验后首次抽取静脉血TSH检测水平分为3组:5.5~10.0 mU/L(20例)、10.1~15.0 mU/L(10例)、＞15.0 mU/L (8例)。非治疗组患儿第2次随访结果显示5.5~10.0 mU/L组所有患儿TSH水平<10.0 mU/L;10.1~15.0 mU/L组有1例患儿TSH水平＞10.0 mU/L,FT4水平在正常值上限;＞15.0 mU/L组有3例患儿 TSH水平＞10.0 mU/L,差异有统计学意义(P< 0.05),FT4水平在正常均值左右,差异没有统计学意义(P＞ 0.05),＞15.0 mU/L组3例患儿给予左旋甲状素钠治疗。治疗组有2例患儿分别在治疗15天和23天后出现医源性甲状腺功能亢进,停药和酌减药量后TSH、FT4水平均恢复正常。两组患者随访结束后TSH、TF4均恢复至正常水平。结论 大多数新生儿高促甲状腺素血症会随着年龄的增长恢复正常,而仅仅有少部分患儿会持续出现甲状腺功能异常,应积极随访;新生儿只有当TSH 基础值＞15.00 mU/L时才需要采用左旋甲状素钠替代治疗,并且严格随访甲状腺功能,避免过度治疗。

目的 探讨孕母甲状腺疾病的新生儿第一个月生长速率和甲状腺功能与2岁时神经发育结局之间的相关性。方法 2013年1月—2014年12月在我院出生的156例孕母甲状腺疾病的新生儿为实验组,观察其第1个月体质量、身长及头围生长的速率,生后当天、第7天、第28天的总甲状腺素(TT4)及促甲状腺素(TSH)的水平;妊娠期无高危因素的母亲分娩的正常新生儿中随机抽取150例为正常对照组,观察生后新生儿第1个月体质量、身长及头围生长的速率,2组均在2岁内分别每3个月均接受随访评估,2岁时行贝利婴幼儿发展量表进行Bailey智力发育指数(MDI)、精神运动发育指数(PDI)的评分。采用回归分析检验新生儿生后第一个月体质量、身长及头围生长的速率,新生儿生后当天、第7天、第28天的TT4及TSH水平与中位数的差值与2岁时MDI、PDI之间的关联性。结果 ①实验组生后第1个月体质量(29.5±4.2 g/d)、身长(1.18±0.67 cm/周)及头围(0.79±0.39 cm/周)生长的速率慢于正常对照组的体质量(35.4±6.3 g/d)、身长(1.69±0.85 cm/周)及头围(1.10±0.42 cm/周)生长的速率,2组差异有统计学意义(t值分别为9.672、5.882、6.768,P均<0.05);②实验组2岁时MDI(108±15)、PDI评分(109±16)低于正常对照组MDI(115±14)、PDI评分(118±11),2组差异有统计学意义(t值分别为16.129、21.279,P均<0.05);③实验组孕母甲状腺疾病的新生儿生后第1个月体质量、身长及头围生长的速率与2岁时MDI、PDI呈正相关(相关系数分别为:0.874,0.842,0.890,0.857,0.871,0.845,t值分别为22.584,59.296,65.441,61.214,62.662,59.507,P均<0.05);④实验组孕母甲状腺疾病的新生儿生后当天、第7天及第28天的TT4及TSH水平与中位数的差值与2岁时MDI、PDI呈负相关(相关系数分别为:-0.878,-0.894,-0.890,-0.690,-0.654,-0.702,t值分别为73.167,81.273,74.166,11.523,10.548,12.103,P均<0.05)。结论 母亲妊娠期患有甲状腺疾病会影响新生儿生后第1个月体质量、身长、头围生长的速率及2岁时的精神运动、智力发育,落后于母亲妊娠期无高危疾病的正常新生儿。另外孕母甲状腺疾病的新生儿第1个月体质量、身长及头围生长的速率和生后当天、生后第7天 及第28天的T4及TSH的水平与2岁时MDI、PDI密切相关。

Objective To investigate the correlation between the growth rate, thyroid function in the first month and neurodevelopmental outcome at the age of 2 in the infants of the maternal thyroid disease. Methods We chose 156 infants of maternal thyroid disease from January 2013 to December 2014 born in our hospital as the experimental group and 150 normal infants of their mothers without high risk factors during pregnancy as the control group. We observed the rate of weight, length and head circumference growth in the first month and TT4 、TSH level at the 1^st day, 7^th day, and 28^th day after birth. We followed up two groups every 3 months up to the age of 2. We assessed Bailey mental development index (MDI) and psychomotor development index (PDI) at the age of 2. Regression analysis was used to test the correlation between the growth rate, TT4,TSH level in the 1^st month and MDI, PDI at the age of 2. Results ① The rate of growth rate in the 1^st month of the experimental group was slower than the control group. It was statistically significant difference between the two groups (P<0.05); ②MDI, PDI at the age of 2 in the experimental group were lower than those of the control group. It was statistically significant difference between the two groups (P<0.05); ③The rate of growth rate in the first month of the experimental group was positively related to MDI and PDI at the age of 2.④The difference between the level of TT4,TSH at the 1^st day, 7thday, and 28^th day and the median after birth was negatively related to MDI and PDI at the age of 2. Conclusion The maternal thyroid disease will affect the first month growth rate and neurodevelopmental outcome at the age of 2 of their infants. Their infants will grow behind than the normal newborns on pregnancy without high-risk disease.The growth rate of the first month and the level of T4 and TSH on the 1^st day, 7^th day, and 28^th day in maternal thyroid disease are closely related MDI and PDI at the age of 2.

目的 探讨妊娠期甲亢患者血清甲状腺功能和免疫含量变化及其临床应用价值。方法 分别取妊娠期与非妊娠期甲亢病例各250例,于孕15周、孕25周以及孕35周时测定两组血清甲状腺功能各项指标与免疫含量。结果 与对照组相比,观察组患者整个妊娠期T3、T4水平明显更高(P＜0.05);孕中晚期两组FT3、FT4水平差异并无统计学意义(P＞0.05)。结论 血清T3、T4在妊娠合并甲亢患者整个妊娠过程中呈高水平表达,临床应高度重视TRAb阳性率、FT3、FT4表达水平,以明确诊断。