Association of Ureaplasma urealyticum colonization with development of bronchopulmonary dysplasia: a systemic review and meta-analysis / 华中科技大学学报（医学）（英德文版）

There is controversy regarding the roles of Ureaplasma urealyticum (U. urealyticum) colonization in the development of bronchopulmonary dysplasia (BPD). This study explored the association between U. urealyticum and bronchopulmonary dysplasia at 36 weeks post-menstrual age (BPD36). Studies published before December 31, 2013 were searched from Medline, Embase, Ovid, Web of Science, and Cochrane databases, with the terms "Ureaplasma urealyticum", "chronic lung disease", or "BPD36" used, and English language as a limit. The association between U. urealyticum colonization and BPD36 was analyzed with RevMan 4.2.10 software, using the odds ratio (OR) and relative risk (RR) for dichotomous variables. Out of the enrolled 81 studies, 11 investigated the BPD36 in total 1193 infants. Pooled studies showed no association between U. urealyticum colonization and subsequent development of BPD36, with the OR and RR being 1.03 (95% CI=0.78-1.37; P=0.84) and 1.01 (95% CI= 0.88-1.16, P=0.84), respectively. These findings indicated no association between U. urealyticum colonization and the development of BPD36.

Association of Ureaplasma urealyticum colonization with development of bronchopulmonary dysplasia: a systemic review and meta-analysis / 华中科技大学学报（医学）（英德文版）

There is controversy regarding the roles of Ureaplasma urealyticum (U. urealyticum) colonization in the development of bronchopulmonary dysplasia (BPD). This study explored the association between U. urealyticum and bronchopulmonary dysplasia at 36 weeks post-menstrual age (BPD36). Studies published before December 31, 2013 were searched from Medline, Embase, Ovid, Web of Science, and Cochrane databases, with the terms "Ureaplasma urealyticum", "chronic lung disease", or "BPD36" used, and English language as a limit. The association between U. urealyticum colonization and BPD36 was analyzed with RevMan 4.2.10 software, using the odds ratio (OR) and relative risk (RR) for dichotomous variables. Out of the enrolled 81 studies, 11 investigated the BPD36 in total 1193 infants. Pooled studies showed no association between U. urealyticum colonization and subsequent development of BPD36, with the OR and RR being 1.03 (95% CI=0.78-1.37; P=0.84) and 1.01 (95% CI= 0.88-1.16, P=0.84), respectively. These findings indicated no association between U. urealyticum colonization and the development of BPD36.

Analysis of death-related factors of type B aortic dissection treated medically during the acute phase / 中华外科杂志

<p><b>OBJECTIVE</b>To analyze the death-related risk factors of type B aortic dissection treated medically during the acute phase (symptoms presenting within 14 d), and to determine the predictors of surgical indications for acute type B aortic dissection.</p><p><b>METHODS</b>Clinical data of 42 patients with acute type B aortic dissection admitted from January 2007 to May 2009 was retrospectively reviewed. There were 33 male and 9 female with a mean age of (50 +/- 12) years old. Therapy included analgesia, controlled hypotension and beta-receptor blocker, the mortality in acute phase was 33.3% (14/42). Univariate and multivariate logistic regression analyses were performed to identify the predictors of the death in acute phase.</p><p><b>RESULTS</b>In univariate logistic regression analysis, the malperfusion of aortic branches (P = 0.018) and maximum aortic diameter (P = 0.002) were significant predictors of death. In the multivariate logistic regression model, the malperfusion of aortic branches (P = 0.041) and maximum aortic diameter (P = 0.005) were also considered as the significant death-related factors.Risk of death augmented significantly (P = 0.000) when the maximum aortic diameter over 40 mm.</p><p><b>CONCLUSION</b>Malperfusion of aortic branches and the large maximum aortic diameter (> 40 mm) are the indications of surgery or endovascular therapy for acute type B aortic dissection.</p>

Deep venous thrombosis of lower extremities: effects of different treatment on the incidence of pulmonary embolism / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the effects of the different treatments of deep venous thrombosis (DVT) of lower extremities on the incidence of the pulmonary embolism (PE).</p><p><b>METHODS</b>201 patients (97 males and 104 females, mean age 60.4 years ranged from 24 to 83) from August 2002 to June 2008 with DVT were retrospectively reviewed and divided into 3 groups based on different treatment, including anticoagulants plus thrombolytics alone (group 1), thrombectomy plus anticoagulants plus thrombolytics (group 2) and anticoagulants plus thrombolytics after delivery of inferior vena cava (IVC) filter (group 3) respectively. One hundred and seventy-four cases had left lower limb DVT, 24 cases had right lower limb DVT and 3 cases had both sides of lower limb DVT. Different incidence of PE in different period (7-14 d in hospital and follow-up after discharge) were calculated. Effects of the three different treatment methods of DVT on the incidence of PE were studied.</p><p><b>RESULTS</b>For in-patients, the prevalence of symptomatic PE was 2.8% (3/107) in the group of receiving anticoagulants plus thrombolytics alone, but in the other two groups, no symptomatic PE happened. There was no significant difference in incidence of symptomatic PE among the 3 groups (P=0.425). For patients discharged, after 6 to 72-month follow-up (mean 24-month), we found that no PE happened in group 1 and group 2, while in group 3, the incidence of PE was 2.4% (1/42). There was also no significant difference (P=0.656) among 3 groups.</p><p><b>CONCLUSIONS</b>There is no significant difference in relation to the incidence of PE in these 3 groups. Therefore vena cava filter implantation should be restricted to optimal indication.</p>