目的 探讨基于单个最大层面(2D)及体积(3D)感兴趣区(ROI)的ADC直方图参数在区分肺良性及恶性孤立性实性病灶的价值。方法 本回顾性研究共纳入69例肺部孤立性实性病变患者,其中恶性56例,良性13例。所有患者术前均采用MRI、DWI(b=600 mm/s²)检查,使用OK软件获取病灶最大截面面积(2D)及体积(3D)ADC直方图特征参数值。运用ROC曲线比较两种测量方法的鉴别效能。结果 2D、3D直方图大部分参数在肺良恶性病变组间差异具有统计学意义(P＜0.05),其中以ADC 50分位数(50^th)、75分位数(75^th)、90分位数(90^th)为著(P＜0.001)。2D直方图中的ADC 75^th 及3D直方图中的ADC 50^th有较好诊断效能(AUC分别为0.891、0.894)。当3D ADC 50^th取1.41×10^-3 mm²/s时,诊断的准确性最高,敏感度为80.00%,特异度为92.86%。ADC 最大值(maximum)、ADC 25分位数(25^th)及峰度组间差异无统计学意义(P＞0.05)。结论 2D及3D ADC直方图在肺部病变鉴别有一定价值,其中以3D直方图的ADC 50^th最佳。

Objective To investigate the value of ADC histogram parameters measured by 2D and 3D ROI in distinguishing benign and malignant solitary solid pulmonary lesions (SPL). Methods A total of 69 patients with SPL were included in this retrospective study, including 56 patients with malignant disease and 13 patients with benign disease. All patients underwent preoperative MRI and DWI (b=600 mm/s²) examinations. The ADC histogram parameters of the lesion from 2D and 3D ROI were obtained by OK software. ROC curve was used to compare the discriminative efficacy of these two methods. Results Most parameters of 2D and 3D histogram showed a statistically significant difference between benign and malignant pulmonary lesions (P<0.05), especially ADC 50 quantiles (50^th), 75 quantiles (75^th) and 90 quantiles (90^th) (P<0.001). The ADC 75^th in 2D histogram and ADC 50^th in 3D histogram had better diagnostic efficiency (AUC were 0.891 and 0.894, respectively). When the ADC 50^th of 3D histogram was 1.41×10^-3 mm²/s, the accuracy of diagnosis was the highest, with a sensitivity of 80.00% and a specificity of 92.86%. There were no significant differences in ADC maximum, 25^th and kurtosis among groups (P>0.05). Conclusion Both 2D and 3D ADC histograms had a certain value in the diagnosis of SPL, and ADC 50^th of 3D histogram showed the best efficacy.

目的 本文通过对越秀区2016—2020年学生肺结核流行特征和筛查情况分析,为学校制定针对性防控措施提供参考依据,最大限度地做好学校结核病防控工作。方法 在“国家结核病管理信息系统”专网中,导出2016—2020年常住在越秀区的学生肺结核患者的病案信息到EXCLE表,进行逻辑核对和补漏;将患者每次所做的密切接触者筛查资料统一并录入到一个EXCLE汇总表,将信息表转换成FoxPro 6.0数据库进行统计,分析本地居住学生肺结核登记发病率、新发与复发构成比,人群分布特征、发现方式、就诊和确诊延误、耐药情况、密切接触者筛查情况。结果 共登记学生肺结核191例,登记发病率为3.25/10万,不同年份登记发病率未见统计学差异(χ²=7.84. P=0.097 3),但学生患者占比从2016年的2.52%上升到2020年的7.74%,上升了3.07倍。学生患者均为新发,男女性别比为1.27:1,以15～24岁年龄段的高中生和大学生构成为主,分别占45.55%和39.79%,两者合计85.34%。发现方式主要以转诊、追踪到位和因症到结防机构直接就诊为主,分别为44.50%、25.13%、23.56%,其中转诊比例最高,占了44.50％;各年的发现方式构成比差异未见统计学意义(χ²=12.057,P=0.441 1)。共登记涂阳患者45例,就诊延误10例,延误率22.22%,确诊延误2例,延误率4.44%;共登记涂阴患者146例,就诊延误29例,延误率19.86%,确诊延误3例,延误率2.05%。共登记培养阳性(涂阳培阳45例,涂阴培阳6例),对一线抗结核药物(HRZES)全敏感42例,全敏感率82.35%;单耐药9例,耐药率17.65%,其中单耐药率最高的为异烟肼和链霉素,不同年份的全敏感率未见统计学差异(χ²=3.81 P=0.432)。需开展筛查的学生肺结核患者178例,已开展筛查的患者169例,筛查率94.94%。需筛查的密切接触者7954例,实际接受筛查(开展了PPD或胸片筛查1项或以上)者7 898例,筛查率99.30%,发现活动性肺结核13例,检出率0.16%。密切接触者筛查方式:胸片筛查6 317人,发现胸片异常42人,异常率0.66%;PPD筛查7 897人,强阳性493人,强阳性率6.24%;症状筛查7 897人,自诉有症状64人,症状阳性率0.81%。结论 2016—2020年,广州市越秀区学生肺结核疫情较轻,患者以高中和大学生首次发病为主,男女差别不大,但就诊延误和确诊延误仍较普遍。其次,对学生患者及其密切接触者的筛查工作做得较好,及时发现了较多现症患者及近期感染者。因此,继续加强高中以上学校的结核病防治知识宣传工作和做好应筛必筛工作,是今后学校疫情控制的侧重点。

目的 探讨以跨肺压导向的呼气末正压通气在急性呼吸窘迫综合征(acute respiratory distress syndrome,ARDS)的临床应用效果。方法 将2020年1月—10月重症医学科收治的100例ARDS患者随机分为对照组和观察组各50例,对照组采用小潮气量辅助控制通气治疗,观察组以跨肺压(transpulmonary pressure,Ptp)为导向选择最佳呼气末正压(positive end-expiratory pressure,PEEP)进行机械通气治疗,观察比较两组患者治疗前和治疗48 h的呼吸动力学指标、血气分析指标,随访28 d病死率。结果 治疗48 h,潮气量、PEEP、肺静态顺应性、PaCO₂、PaO₂、SaO₂、PaO₂/FiO₂观察组明显高于对照组(P＜0.05);随访28 d病死率观察组和对照组比较差异无统计学意义(P＞0.05)。结论 以Ptp为导向选择最佳PEEP的机械通气治疗ARDS可以有效改善患者的呼吸动力学指标和血气分析指标,不增加ARDS的病死率,值得临床推广应用。

Objective To investigate the clinical effect of positive end-expiratory pressure(PEEP) ventilation guided by transpulmonary pressure (Ptp) in acute respiratory distress syndrome (ARDS). Methods Between January and October 2020, 100 cases of ARDS treated in intensive care unit were randomly divided into control group and observation group with 50 cases each. Control group used auxiliary control small tidal volume ventilation therapy, and observation group used the best PEEP mechanical ventilation therapy with the guiding of Ptp. The respiratory dynamics index, blood gas analysis results, follow-up of 28d case fatality rate before and 48h after treatment between the two groups were compared. Results After 48h of treatment, tidal volume、PEEP、pulmonary static compliance、PaCO₂、PaO₂、SaO₂、PaO₂/FiO₂ of the observation group were all higher than those of the control group (P<0.05). There was no statistically significant difference in mortality between the two groups at 28d follow-up (P＞0.05). Conclusion Mechanical ventilation with the best PEEP guided by Ptp could effectively improve the respiratory dynamic index and blood gas analysis results of patients with ARDS, without increasing the mortality of ARDS, which is worthy of clinical application.

目的 研究喘憋性肺炎合并脓毒症患儿血清降钙素原(PCT)、C反应蛋白(CRP)水平的临床意义。方法 回顾性分析本院80例喘憋性肺炎患儿临床资料,根据是否合并脓毒症将80例患儿分为观察组(合并脓毒症,38例)和对照组(未合并脓毒症,42例)。比较两组患儿血清PCT、CRP水平,根据脓毒症严重程度将观察组患儿分为脓毒症组(14例)、严重脓毒症组(13例)及脓毒症休克组(11例),比较三组患儿血清PCT、CRP水平,记录患儿2周死亡率。分析血清PCT和CRP诊断喘憋性肺炎合并脓毒症患儿的准确性,探讨其判断预后的价值。结果 观察组患儿血清CRP和PCT水平高于对照组,差异均有统计学意义(P<0.05)。脓毒症休克组患儿血清CRP、PCT水平高于脓毒症组和严重脓毒症组,差异有有统计学意义(P<0.05)。严重脓毒症组患儿血清CRP和PCT均高于脓毒症组,差异有统计学意义(P<0.05)。80例患儿中死亡7例,死亡率8.75%,血清CRP与PCT早期诊断喘憋性肺炎患儿合并脓毒症的AUC分别为0.729和0.743(95%CL=0.617~0.841,0.637~0.849,P均<0.001),联合诊断的AUC分别为0.876(95%CL=0.792~0.960,P<0.001)。血清CRP和PCT判断患儿预后的AUC分别为0.794和0.813(95%CL =0.584~1.000,0.000~1.000,P =0.012,0.007),联合检测判断患儿预后的AUC为0.832(95%CL=0.638~1.000,P<0.001)。结论 喘憋性肺炎合并脓毒症患儿血清CRP和PCT均异常升高,监测血清CRP和PCT有助于脓毒症的早期诊断和患儿预后判断。

目的 研究纤维支气管镜下给药治疗耐多药空洞型肺结核的临床治疗效果。方法 抽取我院2017年1月—2019年12月期间收治的空洞型肺结核耐多药(同时耐INH、RFP,其他药敏试验抗痨药物均敏感)患者74例作为研究对象,其中38例设作治疗组,在应用传统抗痨药物帕司烟肼、EMB、PZA、TH1321治疗基础上,应用纤维支气管镜下给药治疗,药物选择AMK和左氧氟沙星;36例设作对照组,单纯应用传统抗结核药物帕司烟肼、EMB、PZA、TH1321治疗,比较两组临床治疗效果。结果 治疗组临床治疗总有效率94.7%,高于对照组66.7%,两组比较差异有统计学意义(P＜0.05);治疗后,两组QOL评分均高于治疗前,治疗组评分高于对照组,比较差异有统计学意义(P＜0.05);治疗组患者痰菌转阴时间、病灶减少时间、空洞缩小时间等指标均优于对照组,比较差异有统计学意义(P＜0.05);两组不良反应比较无差异(P＞0.05)。结论 纤维支气管镜下给药应用AMK和左氧氟沙星,可以有效治疗耐多药空洞型肺结核,取得理想的临床治疗效果,能有效改善患者临床症状,缩短痰菌转阴、病灶减少和空洞缩小的时间,有效改善患者的生活质量,而且治疗安全性较高,可以应用于临床推广。

Objective To study the clinical effect of drug administration under fiberoptic bronchoscope in the treatment of multi drug resistant (mdr) cavitary pulmonary tuberculosis. Methods 74 patients with cavitary pulmonary tuberculosis(who were resistant to INH and RFP at the same time and sensitive to other drugs in other drug sensitivity tests) were selected as the study subjects. 38 of them were set up as the treatment group. On the basis of the treatment with traditional antituberculosis drugs such as pasiazide, EMB, PZA and TH1321, they were treated with fiberoptic bronchoscopy and drug selection AMK and levofloxacin, 36 cases as control group, were treated with traditional antituberculotic drugs, such as pasiazide, EMB, PZA and TH1321. Results The total effective rate of clinical treatment in the treatment group was 94.7%, higher than 66.7% in the control group, and the difference between the two groups was statistically significant(P<0.05);there was no difference in adverse reactions between the two groups(P>0.05). Conclusion Administration of AMK and levofloxacin under fiberbronchoscope may effectively treat mdr-cavitary tuberculosis, achieve ideal clinical treatment effect, effectively improve the clinical symptoms of patients, shorten the time of sputum bacteria turning negative, focus reduction and cavitary reduction, effectively improve the quality of life of patients. The treatment safety is high, which may be applied in clinical promotion.

目的 观察灵芝孢子粉对中重度慢性阻塞性肺疾病(COPD)稳定期患者肺功能、6分钟步行距离及T淋巴细胞亚群的影响。方法 选取稳定期中重度COPD门诊患者19例,服用灵芝孢子粉6个月后观察患者服药前后肺功能的变化及循环血液中CD4⁺、CD8⁺T淋巴细胞的比例变化,症状评分(CAT评分)以及对6 MWT的影响。结果 服用灵芝孢子粉6个月后,中重度COPD患者的六分钟步行距离延长,平均增加19 m(P＜0.01),患者的CAT评分也有改善(P＜0.01),患者肺功能与服药前相比有改善趋势,其中FEV₁较服用前平均增加60 mL(P>0.05),FVC平均增加为130 mL(P<0.01),FEV₁/FVC比例降低0.47(P>0.05);外周血CD4⁺T淋巴细胞比例增加(P<0.01),CD8⁺和CD4⁺/CD8⁺T淋巴细胞亚群比例未见明显变化(P＞0.05)。结论 服用灵芝孢子粉6个月后对肺功能无明显作用,但能改善中重度COPD患者的CAT症状评分,可能与升高CD4⁺T淋巴细胞比例有关。

Objective To observe the effects of Ganoderma lucidum spore powder on lung function, 6-minute walking distance and T lymphocyte subsets in patients with moderate to severe chronic obstructive pulmonary disease(COPD). Methods Nineteen patients with moderate-to-severe COPD outpatients in stable phase were enrolled. After taking Ganoderma lucidum spore powder for 6 months, the changes of lung function and the proportion of CD4⁺ and CD8⁺ T lymphocytes in circulating blood, the symptom score(CAT score) and impact on the 6 MWT were observed. Results After taking Ganoderma lucidum spore powder for 6 months, the six-minute walking distance of patients with moderate to severe COPD was prolonged, with an average increase of 19 meters(P<0.01). The patient's CAT score was also improved(P<0.01). There was an improvement trend in increasing average FEV1 by 60 mL(P>0.05), FVC increased to 130 mL(P<0.01) and the FEV1/FVC ratio decreased by 0.47(P>0.05). The proportion of CD4⁺ T lymphocytes in peripheral blood increased(P<0.01), and the proportion of CD8⁺ and CD4⁺/CD8⁺ T lymphocyte subsets did not reach the significance(P>0.05). Conclusion After taking Ganoderma lucidum spore powder for 6 months, it has no significant effect on lung function, but it may improve the CAT symptom score of patients with moderate to severe COPD, which may be related to the increase of CD4⁺ T lymphocyte ratio.

目的 探讨阿莫西林克拉维酸钾干混悬剂(7:1)联合胸腺肽治疗支气管哮喘合并肺部感染患儿的临床疗效。方法 选取我院支气管哮喘合并肺部感染患儿102例,依照治疗方案不同分为研究组(n=51)、常规组(n=51)。常规组采用M胆碱受体阻断剂联合阿莫西林克拉维酸钾干混悬剂(7:1)治疗,研究组于常规组基础上采用胸腺肽治疗,统计比较两组临床疗效、随访3个月复发率及治疗前后血清炎性因子[白介素-6(IL-6)、肿瘤坏死因子-α(TNF-α)]水平、肺功能指标[第1 s用力呼气容积(FEV₁)、第1 s用力呼气容积/用力肺活量(FEV₁/FVC)]。结果 研究组治疗总有效率94.12%高于常规组80.39%(P＜0.05);治疗2周后研究组FEV₁、FEV₁/FVC水平高于常规组,血清IL-6、TNF-α水平低于常规组(P＜0.05);研究组复发率3.70%(1/27)与常规组11.11%(2/18)比较,差异无统计学意义(P＞0.05)。结论 阿莫西林克拉维酸钾干混悬剂(7:1)联合胸腺肽治疗支气管哮喘合并肺部感染患儿疗效显著,可降低患儿炎症反应、改善肺功能。

目的 探讨噻托溴铵喷雾剂(能倍乐)对合并有前列腺肥大(BPH)的慢性阻塞性肺疾病急性加重的影响。方法 2017年9月—2019年9月在我院呼吸与危重症医学科的AECOPD的男性患者167例,年龄51～96岁,平均(74.26±7.6)岁。分别为AECOPD组、AECOPD+噻托溴铵喷雾剂治疗组。比较AECOPD合并BPH与能倍乐的关系。结果 AECOPD患者合并有BPH的45人(52.94%),能倍乐治疗合并有BPH的AECOPD患者48人(58.53%),两组比较差异无统计学意义(P＞0.05)。其中,AECOPD患者合并有BPH患者中有10人(11.76%)出现尿频、夜尿多;尿潴留的4人(4.7%);同时口服哈乐和保列治的16人(18.82%);要置尿管导尿的5人(5.8%)。能倍乐治疗AECOPD患者合并有BPH患者中有7人(8.53%)出现尿频、夜尿多;尿潴留的1人(1.21%);同时口服哈乐和保列治的20人(24.39%);要置尿管导尿的3人(3.6%),比较差异均无统计学意义(P＞0.05)。结论 能倍乐不增加合并BPH的COPD患者的急性加重;也不增加治疗BPH的药物使用。能倍乐对于稳定期合并BPH的COPD患者治疗是安全的。

Objective To investigate the effect of Spiriva Respimat on acute exacerbation of COPD with benign prostatic hyperplasia(BPH). Methods The 167 patients who were hospitalized for acute exacerbation of chronic obstructive pulmonary disease (COPD)(aged 51～96 years) with an average age of (74.26±7.6) years and the 82 patients treated with Spiriva Respimat in the department of respiratory and critical care medicine of our hospital from September 2017 to September 2019 were reviewed. In our pilot study, 48 AECOPD patients with BPH patients were enrolled as the treatment group and another 45 similar cases as the control group. In the former group Spiriva Respimat was administered and the control group was not. Results There were 45 patients (52.94%) with BPH in AECOPD group and 48 patients (58.53%) with BPH in Spiriva Respimat group. There was no statistical significance between the two groups (P>0.05). Among them, 10 patients (11.76%) with AECOPD and BPH had frequent urination and night urination, 4 patients (4.7%) of urinary retention, 16 patients (18.82%) who had oral Harnal and Finasteride, 5 patients (5.8%) need catheterization. In the AECOPD patients with BPH treated with Spiriva Respimat, 7 patients (8.53%) had frequent urination and night urination, 1 patient (1.21%) had urinary retention, 20 patients (24.39%) had oral Harnal and Finasteride, and 3 patients (3.6%) were managed through catheterization (P>0.05). Conclusion Spiriva Respimat does not increase the acute exacerbation of COPD patients with BPH, nor does it increase the use of drugs to treat BPH. It is safe to treat COPD patients with BPH in stable stage.

目的 探讨C反应蛋白(CRP)、降钙素原(PCT)、中性粒细胞计数(NC)及中性粒细胞/淋巴细胞比值(NLR)在肺癌患者化疗后合并细菌感染早期诊断中的意义。方法 收集本院肿瘤科2019年1月—2019年12月肺癌化疗后合并细菌感染患者78例,肺癌化疗后未感染患者64 例,同期健康体检人群39例,采用固相免疫色谱法和速率散射比浊法测定血清中的PCT及CRP 的含量,采用mindray cal8000血细胞分析仪进行血细胞分类计数检查,计算N及NLR。结果 化疗后感染组CRP、PCT、NC及NLR均高于化疗未感染组及健康对照组,差异均有统计学意义(P＜0.01);化疗未感染组与健康对照组CRP、PCT、NC及NLR差异有统计学意义(P＜0.01)。CRP、PCT、NC及NLR联合使用时,其灵敏度为97.507%,而特异度升高为97.15%。细菌感染患者治疗前的PCT、CRP、NC及NLR 与治疗后相比较差异有统计学意义(P<0.05),治疗后低于治疗前。结论 PCT、CRP、NC及NLR联合检测能够提高对肺癌患者化疗后合并细菌感染早期诊断的敏感度和特异度。

Objective To explore the significance of C-reactive protein (CRP), procalcitonin (PCT), neutrophil count (NC) and neutrophil / lymphocyte ratio (NLR) in the early diagnosis of bacterial infection in lung cancer patients after chemotherapy. Methods From January 2019 to December 2019, 78 cases of lung cancer patients with bacterial infection after chemotherapy, 64 cases of uninfected patients after chemotherapy and 39 cases of healthy people in the same period were collected. the contents of PCT and CRP in serum were detected by solid phase immunosorbent assay and rate nephelometry.The NC and NLR were classified and counted by mindray cal8000 hematology analyzer. Results After chemotherapy, CRP, PCT, NC and NLR in the infected group were higher than those in the uninfected group and the healthy control group (P<0.01), while CRP, PCT, NC and NLR in the uninfected group were higher than those in the healthy control group (P<0.01). When CRP, PCT, NC and NLR were used together, the sensitivity was 97.507%, while the specificity increased by 97.15%. The PCT, CRP, NC and NLR of patients with bacterial infection before treatment were lower than those after treatment (P<0.05). Conclusion PCT, CRP, NC and NLR may improve the sensitivity and specificity of early diagnosis of bacterial infection in patients with lung cancer after chemotherapy.

目的 分析2019新型冠状病毒(COVID-19)肺炎的肺部影像表现,提高对该病的影像学诊断认识。方法 回顾性分析2020年1月20日—2020年2月20日在我院就诊并最终经临床确诊的COVID-19肺炎患者的影像学及临床资料,所有患者均在入院后三天内行胸部X线检查或高分辨率CT平扫,分别记录每位患者两种影像检查方式的影像学表现,包括病灶累及的肺叶、磨玻璃影(GGO)、实变影、铺路石征、纤维索条及小叶间隔增厚等征象。结果 共22例确诊为COVID-19肺炎,其中男:女为1:1,年龄范围20~82岁;平均年龄为(52.9±16.2)岁。21例行胸部X线检查,其中有3例患者同时行肺部CT平扫检查;1例患者仅行胸部CT平扫检查。21例X线检查中16例(76%)胸片表现为斑片状、絮状致密影,余5例(24%)检查双肺未见异常征象。4例CT扫描患者中均可以见到病灶(100%),其中有3例(75%)累及5个肺叶,1例(25%)仅累及1个肺叶;均表现为胸膜下磨玻璃影、斑片状实变影、铺路石征、小叶间隔增厚、小血管增粗及支气管气象;其中1例(25%)出现淋巴结肿大;2例(50%)出现纤维索条影。结论 影像学检查对COVID-19的诊断和病情评估具有重要价值,其中X线检查对于部分病灶显示欠佳, 胸部CT平扫对于病变的检查较为准确,可作为COVID-19首选的影像学检查方法,为临床上早期诊断及治疗提供依据。

Objective To analyzed the pulmonary imaging manifestations of 2019 novel coronavirus (COVID-19) pneumonia, in order to improve the imaging diagnosis of the disease. Methods Retrospective analysis of the imaging and clinical data of 22 patients infected with the 2019 Novel Coronavirus (COVID-19) were reviewed, which all the patients took the X-ray or CT scan, and to record the images in the two types of inspection for each patient, including the involvement of the consolidation of the lung, ground-glass opacification, consolidation, paving stone chippings, fiber cable and interlobular septal thickening and so on. Results A total of 22 patients were diagnosed with COVID-19, and the ratio of male to female was 1:1, age range is 20~82, mean age is (52.9±16.2.21) patients received chest X-ray examination, including 3 patients received the non-contrast CT examination at the same time; 1 patient received chest CT plain examination only. 16 (76%) among the 21 patients with X-ray showed patchy and flocculent dense shadows, while the remaining 5 patients (24%) showed no abnormal signs in both lungs. 4 patients with CT scan can find the lesions. Among the 4 patients with detect CT scan, 3 patients (75%) involved 5 pulmonary lobes, and 1 patient (25%) only involved 1 pulmonary lobe. All of them showed subpleural ground-glass opacification, consolidation, paving stone chippings, fiber cable and interlobular septal thickening, including lymph node enlargement occurred in 1 case (25%), fiber strip shadows were observed in 2 cases (50%). Conclusion The imaging examination is of great value for the diagnosis and disease evaluation of COVID-19, among which X-ray examination is not good for some lesions, and CT plain scan is relatively accurate for the examination of lesions, which can be used as the preferred imaging method of COVID-19, providing further theoretical basis for early clinical diagnosis and treatment.