Objective To analyze the risk factors for ventilator-associated pneumonia( VAP) in adult patients undergoing cardiac surgery with cardiopulmonary bypass ( CPB) . Methods A total of 127 consecutive adult patients who received postoperative ventilation for more than 48 hours between January 2002 and June 2008 in the cardiac surgical intensive care unit( CSICU) were included in this study. The patients were assigned into a VAPgroup( n =64) and a control group( n = 63) . Pre-, intra-, and postoperative factors were collected and analyzed between two groups, and the multivariate analysis( logistic regression)were used to identify the risk factors of VAP. Results The overall incidence of VAP was 5.1%. The mortality of VAP was 28. 1% . Compared to the control group, the patients in the VAP group had longer duration of cardiopulmonary bypass time, ventilation time, more blood products usage and the duration of stay in CSICU( P lt; 0. 001) , higher morbidity of low cardiac output syndrome and tracheotomy( P lt; 0. 01) and higher rate of aortic surgery and mortality( P lt; 0. 05) . The preoperative left ventricular ejection fraction ( LVEF) and postoperative oxygenation index( PaO2 /FiO2 ) were lower in the VAP group than those of the control group( P lt; 0. 001) . Five variables were found to be significantly related to the development of VAP by multivariate analysis: CPB time gt; 120 min( OR = 6. 352, P = 0. 000) ; PaO2 /FiO2 lt; 300 mm Hg( OR =3. 642, P = 0. 017) , transfusion of blood products ≥1500 mL( OR = 5. 083, P = 0. 039) , ventilation time≥5 days( OR = 9. 074, P = 0. 047) and tracheotomy( OR = 19. 899, P = 0. 021) . A total of 102 pathogens were obtained by sputum culture in 64 VAP patients. There were 62( 60. 8% ) cases of gram negative bacilli, 19 cases( 18. 6% ) of gram positive cocci and 21( 20. 6% ) cases of eumycetes. Conclusion This study shows that the cardiopulmonary bypass time, ventilation time, hypoxemia, blood products transfusion and tracheotomy are risk factors most likely associated with VAP development.
ObjectiveTo investigate the clinicopathological characteristics and prognosis of elderly patients with colon cancer. MethodsThe clinicopathological and followup data of patients with colon cancer were compared retrospectively between those older than 60 years (405 patients) and those younger than 40 years (146 patients). ResultsFamily history, comorbidities, preoperative intestinal obstruction, and differentiation grade were significantly different between two groups (P＜0.05). The 5-year survival rate of patients in elder group and younger group was 64.9% and 56.8% respectively, and there was significant difference （P＜0.05）. The multivariate analysis indicated that the independent predictors of survival were comorbidities, perioperative CEA level, preoperative intestinal obstruction, tumor gross type, lymph node metastasis, hepatic metastasis, and TNM stage. ConclusionPatients older than 60 years with colon cancer have unique clinicopathological characteristics and better prognosis. The independent predictors of survival are comorbidities, perioperative CEA level, preoperative intestinal obstruction, tumor gross type, lymph node metastasis, hepatic metastasis, and TNM stage.
【摘要】 目的 探讨IgA肾病肾血管病变的危险因素。 方法 回顾性分析2000年1月－2009年6月间经肾活检确诊的175例IgA肾病患者资料，其中有肾血管病变者93例，无肾血管病变者82例，进行对照研究。采用多因素非条件logistic回归模型分析影响IgA肾病肾血管病变的危险因素。 结果 高血压[OR=11.593，P=0.001，95%CI（2.800，47.991）]、24 h尿蛋白定量[OR=1.754，P=0.001，95%CI（1.270，2.424）]、血肌酐[OR=1.005，P=0.001，95%CI（1.002，1.008）]、肾小球硬化[OR=8.341，P=0.000，95%CI（2.716，25.610）]、肾间质纤维化[OR=4.880，P=0.014，95%CI（1.385，17.199）]对IgA肾病肾血管病变的影响有统计学意义。 结论 高血压、24 h尿蛋白定量、血肌酐、肾小球硬化和肾间质纤维化可能是影响IgA肾病肾血管病变的独立危险因素。积极控制以上危险因素对延缓IgA肾病病变的进展具有重要意义。【Abstract】 Objective To explore the risk factors for renal vascular lesions in patients with immunoglobulin A (IgA) nephropathy. Methods We retrospectively analyzed the clinical data of 175 IgA nephropathy patients diagnosed through renal biopsy from January 2000 to June 2009. Among them, there were 98 cases of renal vascular lesions and 82 cases without renal vascular lesion. Controlled study between the two groups of patients were carried out. A multivariate unconditional logistic regression model was employed to analyze the risk factors for renal vascular lesions in IgA nephropathy patients. Results The following factors had significant correlations with renal vascular lesions in IgA nephropathy patients: hypertension [OR=11.593,P=0.001,95%CI (2.800, 47.991)], 24-hour urine protein level [OR=1.754,P=0.001, 95%CI (1.270, 2.424)], serum creatinine [OR=1.005,P=0.001, 95%CI (1.002, 1.008)], glomerulosclerosis [OR=8.341,P=0.000,95%CI (2.716, 25.610)], and renal interstitial fibrosis [OR=4.880,P=0.014, 95%CI(1.385,17.199)]. Conclusion Hypertension, 24-hour urine protein, serum creatinine, glomerulosclerosis and renal interstitial fibrosis were risk factors for renal vascular lesions in IgA nephropathy patients. It will be very significant to actively control all the above risk factors to prevent occurrence of renal vascular lesions.
Objective To explore the risk factors of invasive fungal infection ( IFI) in respiratory ward. Methods A multi-center, retrospective, case-control study was carried out. Patients from five general hospitals in Chongqing city, diagnosed as fungal infection, or whose respiratory specimens were fungal positive, were retrospectively screened for IFI. Patients with respiratory infection and colonization of nonfungal cases in the same period of hospitalization were enrolled as control. Results Thirty-four patients diagnosed with IFI and 50 patients diagnosed with bacterial infection were analyzed for the risk factors of IFI. The demographic characteristics of patients including age and gender were not different( P gt; 0. 05) , but hospitalization days, carbapenem antibiotic use, chemotherapy, deep venous catheterization, total parenteralnutrition( TPN) , neutropenia, and renal disfunction were different significantly between the IFI group and the control group. Multiple logistic regression analysis showed that carbapenem antibiotic use ( OR = 6. 753) ,central venous catheterization ( OR = 5. 021) and TPN ( OR = 3. 199) were main risk factors of invasive fungal infection. Conclusion The carbapenem antibiotic use, central venous catheterization and TPN are risk factors for IFI in respiratory ward.
ObjectiveTo analyze perioperative prognostic factors of pediatric patients undergoing surgical correction of ventricular septal defect (VSD)and severe pulmonary arterial hypertension (PAH). MethodsForty pediatric patients with VSD and severe PAH (mean pulmonary artery pressure (PAPm) < 50 mm Hg)who underwent surgical repair in Beijing Anzhen Hospital from 2004 to 2012 were included in the study. There were 21 male and 19 female patients with their age of 7.2±3.3 years and body weight of 19.6±7.1 kg. All the patients were randomly divided into 2 groups:Group Ⅰ (Group=0, n=20, M/F:12/8, continuous nitroglycerin administration via central venous catheter (CVC)and GroupⅡ (Group=1, n=20, M/F:9/11, continuous prostaglandin E1 (PGE1)administration via CVC). The duration of intubation (Tintubation)was used as the dependent variable (Y). Patient age, cardiopulmonary bypass time (TCPB), postoperative PAPm, pulmonary vascular resistance index (PVRI), systemic to pulmonary pressure ratio (Ps/p), Group, left ventricular stroke work index (LVSWI)and right ventricular stroke work index (RVSWI)were used as independent variables (X). Multivariate liner regression analysis model was used to evaluate the influence of X on Y. ResultsThere was no perioperative death or severe complication in this group. Perioperative prognostic factors of pediatric patients undergoing surgical correction of VSD and severe PAH included group[x1, P=0.004, 95% CI (-71, -16)], TCPB[x2, P=0.011, 95% CI (0.9, 5.8)], posto-perative PAPm (x3, P=0.004 with 95% CI 3.2 to 13.3), RVSWI (x4, P=0.003 with 95% CI-16.9 to-4.3)and PVRI (x5, P=0.03 with 95% CI-0.29 to-0.02). The standardized regression equation was:Y=-0.60x1+0.54x2+2.22x3-1.70x4-0.15x5. ConclusionPGE1 administration, TCPB, postoperative PAPm, RVSWI and PVRI are predominant perioperative prognostic factors of pediatric patients undergoing surgical correction of VSD and severe PAH.
ObjectiveTo evaluate the predictors of generalized anxiety disorder (GAD) among teachers in 3 months after Lushan earthquake. MethodsA prospective cohort study was conducted to diagnostically evaluate the psychological sequelae and GAD during 14-20 days and 85-95 days after the earthquake. The possible predictive factors of psychological sequelae were assessed by a self-made questionnaire and the GAD was assessed by the GAD symptom criterion of M.I.N.I. in 3 months. The univariate and multivariate logistic regression analysis (ULRA, MLRA) were applied to analyze the predictors of GAD after the two-staged assessments. ResultsThere were a total of 319 teachers completed the two-staged assessments. The total response rate was 51.3%. Seventy teachers were diagnosed as GAD and the prevalence of GAD in 3 months was 21.9%. The predictive factors by ULRA included:male, older than 35 years old, having unlivable house, living in tents, sleeping difficulties, easy to feel sad, physical discomfort, loss of appetite, feeling short of social support, unable to calm down for working, feeling difficult for teaching, observing more inattention of students, and wanting to ask for a leave. The independent predictors by MLRA included:male, having unlivable house, feeling short of social support, and feeling difficult for teaching. ConclusionThe teachers have a higher likelihood of GAD after earthquake. It is essential to pay more attention to those male teachers, who feel short of social support and don't have a livable house thus to prevent the GAD at the early stage of post-earthquake.
ObjectiveTo explore the risk factors influenced postoperative complications of colon cancer. MethodsIn this study, 114 patients diagnosed definitely as colon cancer were enrolled from January 2009 to April 2010 in this hospital. The patients were divided into the complication group and non-complication group according to the occurrence of postoperative complications during hospital day. Furthermore, clinicopathological features and operative parameters of patients were compared in two groups, and independent factors for postoperative complications were identified by multiple regression analysis. ResultsThere were statistical differences between two groups in operation time (t=2.034, P=0.032), diabetes mellitus (χ2=5.920, P=0.015), differentiation degree of tumor (χ2=7.163, P=0.028), hospital stay (χ2=0.411, P=0.026), and ASA grades (χ2=11.585, P=0.009). The morbidity of patients with operative time gt;200 min was significant higher than that ≤100 min (χ2=8.884, P=0.003) and 100-200 min (χ2=7.318, P=0.007). The morbidity of patients with ASA Ⅳ grade was higher than that with ASA Ⅰ grade (χ2=13.426, P=0.000). For tumor differentiation, the morbidity of patients with well-differentiated tumor was higher than that with moderately differentiated tumor (χ2=4.950, P=0.026) and poorly differentiated tumor (χ2=7.476, P=0.006). The hospital stay (P=0.009), age (P=0.024), diabetes mellitus (P=0.018), and ASA grade (P=0.001) were the independent factors for postoperative complications by multivariate regression analysis. ConclusionThe physical quality indexes are the mostly common risk factors of postoperative complications for colon cancer, emphasizing on the high-risk factors and making a targeted and individual treatment plan for each patient are of great important to improve the prognosis.
Objective To develop and validate a nomogram prediction model of early knee function improvement after total knee arthroplasty (TKA). Methods One hundred and sixty-eight patients who underwent TKA at Sichuan Province Orthopedic Hospital between January 2018 and February 2021 were prospectively selected to collect factors that might influence the improvement of knee function in the early postoperative period after TKA, and the improvement of knee function was assessed using the Knee Score Scale of the Hospital for Special Surgery (HSS) at 6 months postoperatively. The patients were divided into two groups according to the postoperative knee function improvement. The preoperative, intraoperative and postoperative factors were compared between the two groups; multiple logistic regression was performed after the potential factors screened by LASSO regression; then, a nomogram predictive model was established by R 4.1.3 language and was validated internally. Results All patients were followed up at 6 months postoperatively, and the mean HSS score of the patients increased from 55.19±8.92 preoperatively to 89.27±6.18 at 6 months postoperatively (t=−40.706, P<0.001). LASSO regression screened eight influencing factors as potential factors, with which the results of multiple logistic regression analysis showed that preoperative body mass index, etiology, preoperative joint mobility, preoperative HSS scores, postoperative lower limb force line, and postoperative analgesia were independent influencing factors for the improvement of knee function in the early postoperative period after TKA (P<0.05). A nomogram model was established based on the multiple logistic regression results, and the calibration curve showed that the prediction curve basically fitted the standard curve; the receiver operating characteristic curve showed that the area under the curve of the nomogram model for the prediction of suboptimal knee function in the early postoperative period after TKA was 0.894 [95% confidence interval (0.825, 0.963)]. Conclusions There is a significant improvement in knee function in patients after TKA, and the improvement of knee function in the early postoperative period after TKA is influenced by preoperative body mass index, etiology, and preoperative joint mobility, etc. The nomogram model established accordingly can be used to predict the improvement of knee function in the early postoperative period after TKA with a high degree of differentiation and accuracy.
ObjectiveBy analyzing the correlation between the clinicopathological features of patients with colorectal liver metastases (CRLM) and their postoperative survival, this study is aimed to identify new and accurate prognostic indicators on the prognoses to provide a reference of the treatment strategy selection for patients with CRLM. MethodsThe clinical data of 233 patients with CRLM who received operation treatments in the Eastern Hepatobiliary Hospital of the Second Military Medical University from January 2006 to December 2009 were retrospectively investigated, and their clinicopathological features, as well as their prognosis were analyzed. The survival curve was drawn by Kaplan-Meier method, and the survival rates were analyzed by log-rank test. Parametric survival analysis was used to identify predictors of cancer-specific survival. ResultsThe median survival time after cancer resection was 37.0 months, with cumulative 1-year, 3-year, and 5-year survival rates of 93.0%, 61.0%, and 17.0%, respectively. The median survival time, with cumulative 3-year, and 5-year survival rates of patients who had received radical operations was better than the others who received palliative operations:40.53 months vs 27.20 months, 59.0% vs 29.0%, and 20.0% vs 0(P < 0.05), respectively. In overall surviva, the results of univariate analysis showed that 13 factors, including surgical method, the first relapse after liver metastasis resection, the number of liver metastases, surgical margin, other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, whether any chronic liver disease was associ-ated, preoperative serum CEA level, preoperative serum CA19-9 leve, the position of the liver metastases, whether the liver metastasis capsule was complete, TNM stagethe of primary cancer, whether the liver metastasis was simultaneous liver metastases, and the maximum diameter of the liver metastases, were closely related to the clinicopathological features associated with prognosis and the differences were statistically significant (P < 0.05). The results of multivariate survival analysis demonstrated that received palliative operations, simultaneous liver metastases, there were other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, liver metastases without a complete capsule, the number of liver metastases appeared as multiple and widedistribution, unassociated chronic liver disease of the patients, the maximum diameter of the liver metastases>3 cm, were the independent risk factors affecting the postoperative survival of the patients with CRLM (P < 0.05). ConclusionsIt is important for long-term survival of patients with CRLM who were received operations. Received palliative operations, simultaneous liver metastases, there were other unresectable extrahepatic metastases or resectable invasion in blood vessels or the surrounding tissue, liver metastases without a complete capsule, the number of liver metastases appeared as multiple and widedistribution, unassociated chronic liver disease of the patients, the maximum diameter of the liver metastases>3 cm, were the independent risk factors affecting the postoperative survival of the patients with CRLM.
Objective To discuss the clinicopathologic risk factors related to local recurrence of rectal cancer after radical surgery. Methods The complete clinicopathologic data of 368 patients with rectal cancer from January 2004 to April 2011 in this hospital were retrospectively analyzed by univariate and multivariate analysis methods. Results There were 73 cases suffered from local recurrence and accounted for 19.84% （73/368） of rectal cancer during the same period. Univariate analysis results showed that gender， tumor from anal margin， tumor circumference， TNM staging， histology type， vessel infiltration， tumor perforation， stomal leak， and chemoradiotherapy were associated with postoperative recurrence （P＜0.05）. Multivariate analysis results showed that tumor from anal margin， tumor circumference， TNM staging， histology type， vessel infiltration， tumor perforation， and chemoradiotherapy were prognostic factor for local recurrence of rectal cancer （P＜0.05）. Conclusions There are many factors related to postoperative local recurrence， but the most dangerous factor is vessel infiltration.