Risk factors for prolonged mechanical ventilation in neonates and young infants after cardiac surgery for complicated congenital heart disease / 临床麻醉学杂志

Objective To investigate the risk factors for postoperative prolonged mechanical ventilation in neonates and young infants with complicated congenital heart disease. Methods A retrospective analysis of 150 children (80 males and 70 females, aged ≤ 6 months, RACHS-1 grade ≥ 3) with complex congenital heart disease who were admitted to Children's Heart Surgery Department of Anzhen Hospital from January 2016 to December 2017 was conducted. These data were collected: the demographic data, history of cardicvascular-related diseases, type of surgery, preoperative complications, CPB, CPB time, deep hypothermia, blood gas index, delayed chest closure (DCC), pacemaker; minimum oxygenation index in the first 24 h after operation, maximum vasoactive-inotropic score (VIS), failed extubation and postoperative complications. Logistic regression model was used to analyze the risk factors of prolonged mechanical ventilation within neonates and young infants after complicated congenital heart surgery. Results Forty-two patients (28％) required PMV with mechanical ventilation ≥ 72 h. Univariate analysis showed age, weight, RACHS-1 grade, previous history of cyanosis, history of pneumonia, emergency surgery, preoperative mechanical ventilation, preoperative EF, deep hypothermia, CPB time＞ 132 min, intraoperative minmum pH value, intraoperative maximum blood glucose and lactic acid concentrations, DCC, application of pacemakers, maximum VIS within 24 h after surgery, minimal OI and postoperative complications may be the risk factors of prolonged postoperative mechanical ventilation in neonates and young infants with complicated congenital heart disease (P ＜ 0.05). Multivariate Logistic regression analysis showed that the CPB time＞132 min (OR = 11.04, 95％ CI 2.07-58.96, P = 0.005), intraoperative maximum lactate (OR = 1.53, 95％ CI 1.07-2.20, P = 0.021) and failed extubation (OR = 17.28, 95％ CI 2.46-121.20, P = 0.004) were independent risk factors for prolonged postoperative mechanical ventilation in neonates and young infauts with complicated congenital heart disease. Conclusion CPB time＞132 min, intraoperative maximum lactic acid concentration and failure of extubation can be used as predictors of prolonged postoperative mechanical ventilation in neonates and young infants with complicated congenital heart disease.

Clinical Experiences with Febrile Infants, Younger than Three Months, with Urinary Tract Infection in a Single Center for Four Years: Incidence, Pathogens and Viral Co-infections

PURPOSE: The aim of this study was to analyze the incidence and microbiological characteristics of urinary tract infection in infants aged younger three months and to compare with other infection with positive urine culture. METHODS: We retrospectively reviewed the medical records of 425 infants with a tympanic temperature >37.6℃, aged younger than three months, who were admitted to Cheil General Hospital in Seoul, Korea, from January 2013 to December 2016. Demographic and clinical features, laboratory findings, respiratory virus PCR and the pathogens of a urine culture were analyzed. RESULTS: A total of 88 infants (63 males, 25 females) had urinary pathogens detected in the urine culture test. The incidence of UTI in febrile infants aged younger 3 months was 11%. The most common pathogen which causes UTI was E. coli as same as in previous studies. They were divided into a UTI group (n=48) and a non-UTI group (n=40). In comparison of both group, leukocytosis, C-reactive protein level, Absolute neutrophil count level, peak temperature is statistically significant. In both group, there were co-infections with viral pathogens in some cases, and the odd ratio of non-UTI group with viral infection was 3.28. CONCLUSION: The study determined the incidence and pathogen of UTI in febrile infants, aged younger three months. E. coli was responsible for the majority UTI. There were some viral co-infections in febrile infants with bacteriuria and incidence was higher in non-UTI group. WBC count, ANC count and CRP level were the differentiating factors of UTI from non-UTI group.

Clinical Experiences with Febrile Infants, Younger than Three Months, with Urinary Tract Infection in a Single Center for Four Years: Incidence, Pathogens and Viral Co-infections

PURPOSE: The aim of this study was to analyze the incidence and microbiological characteristics of urinary tract infection in infants aged younger three months and to compare with other infection with positive urine culture. METHODS: We retrospectively reviewed the medical records of 425 infants with a tympanic temperature >37.6℃, aged younger than three months, who were admitted to Cheil General Hospital in Seoul, Korea, from January 2013 to December 2016. Demographic and clinical features, laboratory findings, respiratory virus PCR and the pathogens of a urine culture were analyzed. RESULTS: A total of 88 infants (63 males, 25 females) had urinary pathogens detected in the urine culture test. The incidence of UTI in febrile infants aged younger 3 months was 11%. The most common pathogen which causes UTI was E. coli as same as in previous studies. They were divided into a UTI group (n=48) and a non-UTI group (n=40). In comparison of both group, leukocytosis, C-reactive protein level, Absolute neutrophil count level, peak temperature is statistically significant. In both group, there were co-infections with viral pathogens in some cases, and the odd ratio of non-UTI group with viral infection was 3.28. CONCLUSION: The study determined the incidence and pathogen of UTI in febrile infants, aged younger three months. E. coli was responsible for the majority UTI. There were some viral co-infections in febrile infants with bacteriuria and incidence was higher in non-UTI group. WBC count, ANC count and CRP level were the differentiating factors of UTI from non-UTI group.

Differentiation between Viral and Urinary Tract Infections Using the Modified Rochester Criteria In Febrile Infants Younger than three Months

PURPOSE: The symptoms and signs of urinary tract infection (UTI) in early infancy are non-specific. Prompt diagnosis of UTI is important, as untreated UTI results in renal damage. Especially, febrile UTI in young infants coexist with other serious bacterial infections. The purpose this study was to propose modified Rochester criteria to differentiate viral infection from urinary tract infection. METHODS: We carried out a retrospective investigation of 168 infants less than three months old with a tympanic temperature >38degrees C who were admitted to Chung-Ang University Hospital between 2011 and 2014. We compared the symptoms, physical examination results, and laboratory data between viral infection and UTI groups. A modified Rochester criterion was composed of statistically significant factors. RESULTS: A total of 76 and 92 infants with UTI and a viral infection, respectively, were included. Statistically significant differences in gender, previous admission history, neutrophil ratio, and urine WBC count were found between the two study groups. Using a cut off value of 3 points, the sensitivity and specificity of the modified Rochester criteria were 71.28% and 78.57%, respectively. CONCLUSION: The modified Rochester criteria may give an outline for identifying young infants with UTI.