Objective To investigate the accuracy of pulse oximetry screening for congenital heart disease （CHD） in asymptomatic children. Methods We electronically searched VIP database，CNKI database，CBMdisc，Wanfandatabase，PubMed，Excerpta Medica Database （EMBASE） and the Cochrane Library from the time of database establishment to February 2013 to identify literatures regarding pulse oximetry screening for CHD in asymptomatic children. Data extraction was performed by two researchers independently. Quality of the included literatures was evaluated with qualityassessment for diagnostic accuracy studies （QUADAS）. Meta-analysis was performed using RevMan 5.1.1. ResultsTwelve studies were included in this study with a total of 137 582 newborns. Fourteen QUADAS criteria were fulfilled by all the 12 studies. Among the 12 studies，only the studies with positive test results received verification using a gold standardtest，and the execution of the gold standard test was described in sufficient detail only in 1 study. There were 10 studies in which the gold standard test results were interpreted with knowledge of the diagnostic test results. Meta-analysis showed that pooled sensitivity and specificity of pulse oximetry test for the diagnosis of CHD were 22% with 95% CI （19%，25%） and 99% （99%，99%） respectively. Pooled positive likelihood ratio （LR＋） and negative likelihood ratio （LR-） were 157.30 with 95% CI （11.80，2 096.95） and 0.61 with 95% CI （0.46，0.82） respectively. Pooled diagnostic odds ratio was 398.25 （34.5，4 596.81）. The area under summary receiver operating characteristic （SROC） curve was 0.809，and Q index was 0.744. Conclusion Pulse oximetry is a lowly sensitive and highly specific diagnostic method for children with CHD，and is helpful for early diagnosis of CHD.
目的 探讨妊娠期并发急性胰腺炎(APIP)的病因、发病机理、临床特点及防治措施. 方法 对四川省宜宾市第二人民医院和四川大学华西医院1995年1月至2006年12月期间收治的72例APIP患者的临床资料进行回顾性分析. 结果 本组72例中,属轻型急性胰腺炎(MAP)者49例(68.06%),重症急性胰腺炎(SAP)者23例(31.94%); 有胆囊炎合并胆囊结石病史者43例(59.72%),伴高脂血症者21例(29.17%).采用非手术治疗56例,手术治疗16例,孕妇治愈66例(91.67%),死亡6例(8.33%),死因为多器官功能障碍综合征、急性呼吸窘迫综合征及严重复腔感染; 终止妊娠16例(均为32～38周妊娠),56例继续妊娠; 72例中双胎2例,胎儿死亡共15例(20.27%); 漏诊、误诊6例.结论 APIP的发生与胆结石和高脂血症有关,并于妊娠中晚期发病率高; 其临床表现复杂,易误诊,对孕妇及胎儿威胁极大; 把握该疾病的特点,提高对APIP的认识和警惕性,及时准确的诊断与"个体化"的治疗原则,适时终止妊娠,可以提高其治愈率,降低母婴死亡率.
Abstract： Objective To investigate the clinicopathological characteristics, improve the accuracy of clinical diagnosis， and reduce postoperative complications of thoracic hemangioma. Methods Clinical records of 9 patients with thoracic hemangioma who underwent surgical resection in West China Hospital of Sichuan University from January 2006 to August 2012 were retrospectively analyzed. There were 2 males and 7 females with their average age of 47.9±19.3 （18-71）years. Six patients underwent thoracotomy， 1 patient underwent complete video-assisted thoracoscopic surgery （VATS）， 1 patient underwent video-assisted mini-thoracotomy， and 1 patient underwent staged operations which were performed by neurological surgeons and thoracic surgeons separately. Imaging characteristics, intraoperative gross tumor features, and pathological characteristics of resected hemangioma specimens were analyzed. Clinical outcomes of different surgical strategies for the treatment of hemangioma were compared. Results Nine patients with thoracic hemangioma were included in this study. Imaging studies showed the tumor as a round-shaped mass in 66.7% （6/9） of these patients and a lobulated mass in the remaining 33.3% （3/9） patients. Magnetic resonance imaging （MRI） assessment was helpful for preoperative diagnosis of hemangioma， with T2 weighted imaging tumor enhancement as the main MRI feature. Thoracic operation time was 106.3±60.1 （60-192） min， and intraoperative blood loss was 91.1±43.7 （30-150） ml. All the patients were followed up for 3-6 years except 1 patient who was followed up for 1 month. None of the patients had hemangioma-related death， recurrence or metastasis during follow-up. Conclusions Thoracic hemangiomas are usually benign entities and often locate in the mediastinum. Surgical strategies should be determined by the size and location of the tumor as well as the surgeon’s technique level. VATS has the advantages of being minimal invasive, causing less intraoperative blood loss and shorter length of hospital stay for the treatment of hemangioma. Resection of a dumbbell-type hemangioma may need cooperation between neurological and thoracic surgeons.
Objective?To investigate clinical characteristics， diagnosis， and treatment for patients with spontaneous esophageal rupture， and improve clinical diagnostic and treatment level.?Methods?We retrospectively analyzed the clinical data of 34 patients with spontaneous esophageal rupture who were treated in Subei People’s Hospital from January 1996 to June 2010. There were 28 male patients and 6 female patients with their age ranging from 32 to 80 years old (mean 57.6 years old). Main clinical manifestations included severe chest and abdominal pain after vomiting， fever， dyspnea and shock. The duration between disease onset and establishing diagnosis ranged from 4 hours to 7 days. Thirteen patients received conservative treatment including chest drainage， retrograde gastrointestinal decompression and enteral nutrition through jejunostomy. Twenty one patients received surgical treatment including layered anastomosis of the ruptured esophagus， retrograde gastrointestinal decompression and enteral nutrition through jejunostomy.?Results?All the patients were cured without in-hospital death. The mean hospital stay of the 13 patients who received conservative treatment was 46 days， while that of the 21 patients who received surgical treatment was 17 days. All the ruptured esophagus were one-stage healed. All the 34 patients were followed up from l to 8 years， including 11 patients in the conservative treatment group and 19 patients in the surgical treatment group， but 4 patients was lost during follow-up. All the patients had a normal diet without symptoms of esophageal stricture， reflux esophagitis or chronic thoracic empyema.?Conclusion Spontaneous esophageal rupture is a thoracic emergency with a high misdiagnosis rate and mortality．Early diagnosis， early surgical repair of ruptured esophagus and satisfactory chest drainage play a vital role in the treatment for patients with spontaneous rupture of esophagus.
Objective To analyze risk factors of malignancy in patients with small pulmonary nodules （diameter ≤2 cm） using univariate analysis and multivariate logistic regression，and establish a mathematical prediction model to estimatethe probability of malignancy. Methods Clinical data of 147 patients with small pulmonary nodules who underwentsurgical resection with definite postoperative pathological diagnosis from January 2005 to September 2012 in the 161st Central Hospital of PLA were retrospectively analyzed. There were 84 male and 63 female patients with their age of 31-78（56.2±10.1） years. Univariate analysis using Chi-square test or t test was performed to analyze risk factors including patientage，gender，symptoms，history and quantity of smoking，history of heavy drinking，history of tumor，tumor site，diameter，lobulation，spiculation，pleural indentation，ground-glass opacity，cavity，enlarged hilar and mediastinal lymph nodes.Independent predictors of malignancy were screened with multivariate logistic regression analysis. A mathematical predictionmodel was built to estimate the probability of malignancy and then examined. Results Univariate analysis showed that there was statistical difference in patient age（t=7.146，P＜0.001），heavy smoking history（χ2=6.169，P=0.013），nodule diameter（t=3.375，P=0.001），spiculation（χ2=5.609，P=0.018），lobulation（χ2=5.675，P=0.017），and pleural indentation（χ2=12.994，P＜0.001）between benign and malignant small pulmonary nodule groups. Multivariate logistic regression analysis showed that patient age （OR=1.110，P=0.000），nodule diameter （OR=2.050，P=0.029），lobulation （OR=1.672，P=0.045），spiculation（OR=2.054，P=0.032） and pleural indentation（OR=4.090，P=0.024）were independent predictors of malignancy in patients with small pulmonary nodules （P＜0.05） . The mathematical prediction model to estimate the probability of malignancy was：Logit （P） =ez/ （1 ＋ ez），Z=-6.657 ＋ （0.104×age） ＋ （0.718×diameter） ＋ （0.720×spiculation） ＋（0.514×lobulation） ＋ （1.409×pleural indentation），and e was natural logarithm. Both Hosmer-Lemeshow test （χ2=1.802，P=0.986） and maximum likelihood ratio test （Cox-Snell R2=0.310，Nagelkerke R2=0.443） showed satisfactory goodness of fit. The diagnostic accuracy was 85.71%，sensitivity was 87.50%，specificity was 81.40%，positive predictive value was 91.92%，and negative predictive value was 72.92% when the cut-off value was 0.58. Conclusions Patient age，nodule diameter，spiculation，lobulation and pleural indentation are independent predictors of malignancy in patients with small pulmonary nodules. The mathematical prediction model can accurately estimate the probability of malignancy for patients with small pulmonary nodules.