Establishment of a Predictive Diagnostic Model for Acute Mycoplasma Pneumoniae Infection in Elderly Patients with Community-acquired Pneumonia

We established a diagnostic model to predict acute Mycoplasma pneumoniae （M. pneumonia） infection in elderly Community-acquired pneumonia （CAP） patients. We divided 456 patients into acute and non-acute M. pneumoniae infection groups. Binary logistic regression and receiver operating characteristic （ROC） curves were used to establish a predictive model. The following independent factors were identified： age 〉 70 years; serum cTNT level 〉 0.0S ng/mL; lobar consolidation; mediastinal lymphadenopathy; and antibody titer in the acute phase 〉 1：40. The area under the ROC curve of the model was 0.923 and a score of 2 7 score predicted acute M. pneumoniae infection in elderly patients with CAP. The predictive model developed in this study has high diagnostic accuracy for the identification of elderly acute M. pneumoniae infection.

The effect on immune function and inflammatory factors of adjuvant antibiotic therapy through Xuebijing combined with thymopentin in elderly patients with severe pneumonian

Objective:To investigate the effect on immune function and inflammatory factors of adjuvant antibiotic therapy through Xuebijing combined with thymopentin in elderly patients with severe pneumonia.Methods:Divided 100 cases of elderly patients with severe pneumonia into the observation group and the treatment group according to odevity of serial number. Fifty patients in each group. Gave control group severe pneumonia conventional treatment, such as mechanical ventilation, antifebrile, removing phlegm and anti-infection, and gave Xuebijing by intravenous drop simultaneously;observation group was given Xuebijing combined with thymopentin by intravenous drop on the base of conventional treatment. Then compared the T lymphocyte subpopulation and serum inflammatory factors level including CRP, IL-6, IL-1 and TNF-α of two groups before treatment and 7 d, 14 d of treatment respectively.Result:(1) There was significant difference in the level of CD3+, CD4+, CD8+, CD4+/CD8+ in this two groups at different time points, and that the level of CD3+, CD4+, CD4+/CD8+: T2>T1>T0, CD8+ level: T2<T1<T0;The increasing range of CD3+, CD4+, CD4+/CD8+level and the decreasing range of CD8+ in the observation group were larger than that in the control group, there was statistical significant difference. (2) The level of serum inflammatory factors CRP, IL-6, IL-1, TNF-α in two groups at different time points were statistical significant difference, all the CRP, IL-6, IL-1 and TNF-α level were T2<T1<T0, presenting a downward trend;The descending range of serum CRP, IL-6, IL-1, TNF-α level in the observation was larger compared with the control group, there was significant difference.Conclusion:The adjuvant antibiotic therapy through Xuebijing combined with thymopentin in elderly patients with severe pneumonia could improve the immune function and lower the inflammatory factors level.

Can the detection of IgA anti-Mycoplasma pneumoniae added to IgM increase diagnostic accuracy in patients with infections of the lower respiratory airways?

AIM To evaluate the increase in diagnostic yield, by using IgA in addition to IgM, instead of IgM alone, in relation to the age of the patients.METHODS The study considered 1067 blood samples from patients with clinical signs of lower respiratory tract infections, tested for anti-Mycoplasma IgG, IgM and IgA antibody.RESULTS The increase in diagnostic yield with IgA, compared to IgM detection alone was of 3.5% with statistically significant differences between age groups(0.8% for those equal/under 50 years of age and 4.3% for those over 50).CONCLUSION Our findings demonstrate that IgA detection lead to a twofold increase in the number of diagnoses among the older age groups, but it did not result in relevant increase among the younger age groups.

老年重症肺炎抗生素降阶梯治疗及比阿培南的应用

目的:评价降阶梯治疗策略治疗老年重症肺炎的疗效。方法:回顾分析2008年1月—2011年1月解放军成都军区总医院老年科重症肺炎患者42例,分为治疗组(降阶梯治疗组,21例)和对照组(传统治疗组,21例),比较2组的不适当抗生素治疗发生率、临床疗效、细菌清除率、感染控制天数、住院费用等指标。结果:治疗组与对照组比较总有效率分别为90.48%(19/21)、61.90%(13/21);细菌清除率分别为82.60%(19/23)、59.09%(13/22);感染控制天数分别为(8.5±4.8)、(13.3±6.4)d,2组比较差异显著,有统计学意义(P<0.05);不适当抗生素治疗发生率和住院费用明显低于对照组,差异显著,有统计学意义(P<0.01)。结论:抗生素降阶梯疗法能迅速控制感染,提高治愈率,对老年重症肺炎可获得良好疗效。

心肌肌钙蛋白T和CK在老年重症肺炎患者中的临床意义及对预后的影响

目的探讨血清心肌肌钙蛋白T（cTnT）和CK在老年重症肺炎患者中的临床意义及对预后的影响。方法观察181例老年重症肺炎患者入院后3d内最高cTnT、CK测值和APACHEII评分，并对3者进行相关性分析。将患者分为cTnT正常组和升高组，比较两组的APACHEII评分和病死率。依据预后分为生存组和死亡组，比较两组cTnT、CK测值的变化。结果cTnT正常组APACHEII评分和死亡例数与升高组差异有统计学意义（P〈005）。生存组cTnT、CK测值和APACHEII评分与死亡组差异均有统计学意义（均P〈0．01），cTnT、CK与APACHEII评分3者之间呈正相关（均P〈0.01）。生存组cTnT、CK和APACHEII评分为（0．056±0．023）ng／ml、（13567±2071）μg／L和（17．4±2．8）分；死亡组cTnT、CK和APACHEII评分为（0．92±0.035）ng／ml、（210．22±32．6）μg／L和（24．8±5．6）分。结论老年重症患者cTnT、CK升高较常见，cTnT、CK监测对判断老年重症肺炎的预后具有一定临床意义。

老年重症社区获得性肺炎入住ICU患者血清B型钠尿肽、降钙素原、C反应蛋白变化特点及临床意义

目的分析老年重症社区获得性肺炎(CAP)入住ICU(重症监护室)患者血清B型钠尿肽(BNP)、降钙素原(PCT)、C反应蛋白(CRP)水平变化特点,探讨其临床意义。方法选取2017年6月~2019年6月我院收治入住ICU的老年重症CAP患者100例作为观察组,包括生存50例和死亡50例;选取同期未入住ICU的老年重症CAP患者100例作为对照组。检测两组患者入院时血清BNP、PCT、CRP水平及观察组入住ICU第1天和第5天血清BNP、PCT、CRP水平,比较其动态变化。结果入院时,观察组患者血清BNP(1622.34±10.93)pg/mL、PCT(50.54±11.43)ng/mL、CRP(81.34±10.01)ng/L明显高于对照组患者血清BNP(157.32±20.01)pg/mL、PCT(4.35±1.13)ng/mL、CRP(19.38±2.13)ng/L,观察组死亡患者血清BNP、PCT、CRP明显高于生存患者,死亡患者第5天血清BNP(1924.22±10.02)pg/mL、PCT(57.30±9.02)ng/mL、CRP(88.30±12.32)ng/L与第1天血清BNP(1891.20±56.59)pg/mL、PCT(61.20±8.92)ng/mL、CRP(90.03±19.22)ng/L比较,差异有统计学意义(P<0.05)。结论动态监测BNP、PCT、CRP水平指导临床诊治,有助于判断老年患者是否需要转入ICU强化治疗,值得临床推广使用。

替考拉宁治疗老年重症革兰阳性菌肺炎临床疗效评估

目的探讨3种糖肽类抗菌药物治疗老年重症肺炎患者疗效及安全性。方法采用随机对照及开放性试验,82例革兰阳性菌感染的老年重症肺炎患者,随机分为两组,分别给予国产和进口替考拉宁治疗,替考拉宁针剂前3d用0.4g,1次/12h,以后为0.4g,1次/d,静脉滴注21d;对照组年轻重症肺炎患者30例,给予去甲万古霉素治疗,0.8g静脉滴注,14d。结果 3组患者临床有效率、痊愈率、细菌清除率国产替考拉宁组分别为85.7%、57.1%、95.2%;进口替考拉宁组分别为85.0%、57.5%、97.5%,去甲万古霉素组为86.7%、60.0%、90.0%,组间差异无统计学意义;不良反应发生率分别为4.8%、5.0%、53.3%,差异有统计学意义(P<0.05)。结论 3种糖肽类药物治疗革兰阳性球菌重症肺炎均有良好疗效,但替考拉宁不良反应明显低于去甲万古霉素,国产及进口均是老年革兰阳性菌重症肺炎患者的良好选择。