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      Early prediction of capillary leak syndrome in infants after cardiopulmonary bypass†

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          Abstract

          <p class="first" id="d1983642e89">As an inflammatory reaction after cardiac surgery involving cardiopulmonary bypass (CPB), capillary leak syndrome (CLS) is associated with increased morbidity, especially in newborns and infants. We investigated whether different cytokines measured via microdialysis can monitor local inflammation in adipose tissue subcutaneously and predict the development of CLS early, before clinical signs appear. Furthermore, we investigated whether there are age-related differences between the inflammatory responses in newborns and infants. </p>

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          Characterizing the inflammatory response to cardiopulmonary bypass in children.

          J Kozik-Jaromin, J Tweddell (2006)
          Cardiopulmonary bypass is known to trigger a global inflammatory response. Age-dependent differences in the inflammatory response, the increased susceptibility to injury of immature organ systems, and the larger extracorporeal circuit to patient size ratio results in greater susceptibility of younger and smaller patients to the damaging effects of cardiopulmonary bypass. In this review the components of the inflammatory response to cardiopulmonary bypass are reviewed with special reference to the pediatric age group, including the age-specific impact on organ systems. In addition the current and evolving strategies to prevent, limit, and treat the inflammatory response to cardiopulmonary bypass in children are examined.
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            Prevalence of congenital heart defects in newborns in Germany: Results of the first registration year of the PAN Study (July 2006 to June 2007).

            A Lindinger, G Schwedler, H Hense (2010)
            To investigate the current prevalence of congenital heart defects (CHD) in live births in Germany and to assess its relation to demographic and gestational parameters. Nation-wide study (PAN: Praevalenz angeborener Herzfehler bei Neugeborenen) with passive registration of infants born between 1st July 2006 and 30th June 2007 in Germany diagnosed with CHD. Data were provided by 260 participating institutions. 7 245 infants with CHD were registered to give a total CHD prevalence of 1.08%. The most common lesions were: ventricular septal defect (all types) (48.9%), atrial septal defect (17.0%), valvular pulmonary stenosis (6.1%), persistent arterial duct (4.3%) and aortic coarctation (3.6%). The most common cyanotic lesions were tetralogy of Fallot (2.5%) and complete transposition of the great arteries (2.2%). A single ventricle (all types) was identified in 2.8%, half of them being a hypoplastic left heart syndrome. Female gender was more common among mild CHD (57.3%) while there was a striking predominance of male infants among severe lesions (58.4%). Prematurity (18.7% vs. 9.1%), a birth weight below 2 500 g (17.5% vs. 6.8%) and multiple births (6.2% vs. 3.3%) were more frequent in infants with CHD than in all live births. More than 80% of the CHD diagnoses were made within three months after birth. The PAN study recorded an overall CHD prevalence of 1.08% in Germany. The proportion of mild CHD may indicate a high diagnostic level, the prevalence of severe lesions is concordant with ranges reported by others. CHD is associated with prematurity, low birth weight and multiple births. Georg Thieme Verlag KG Stuttgart, New York.
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              Inflammatory reaction and capillary leak syndrome related to cardiopulmonary bypass in neonates undergoing cardiac operations.

              Bruno J Messmer, H Hörnchen, James S Busse … (1996)
              We studied the inflammatory reaction related to cardiopulmonary bypass in 24 neonates (median age 6 days) undergoing the arterial switch operation for simple transposition of the great arteries, with respect to the development of postoperative capillary leak syndrome. Complement proteins, leukocyte count, tumor necrosis factor-alpha, and histamine levels were determined before, during, and after cardiopulmonary bypass. Additionally, protein movement from the intravascular into the extravascular space during cardiopulmonary bypass was assessed by the measurement of plasma concentrations of proteins with molecular weights ranging from 21,200 to 718,000. Capillary leak syndrome developed in 13 of the 24 neonates. Patients with capillary leak syndrome, as compared with those without, had preoperatively higher C5a levels (C5a, 3.0 +/- 0.6 microgram/L vs 0.9 +/- 0.2 microgram/L) (mean +/- standard error of the mean) (p < 0.05) and higher leukocyte counts (leukocytes, 17.9 +/- 2.1 X 10(3) cells/ml versus 11.7 +/- 0.8 X 10(3) cells/ml) (p < 0.05), suggesting in these neonates a preoperative inflammatory state. Preoperative clinical and operative data were identical in both patient groups. Before cardiopulmonary bypass, serum protein concentrations were similar in all patients. Ten minutes after institution of cardiopulmonary bypass, protein concentrations fell to significantly lower values in patients with capillary leak syndrome than in those without: albumin (19% +/- 1.5% vs 30% +/- 6% of the prebypass value, p < 0.05), immunoglobulin G (17% +/- 1.5% vs 29% +/- 5.5%, p < 0.001), and alpha 2-macroglobulin (15% +/- 1.2% vs 25% +/- 4%, p < 0.02). During cardiopulmonary bypass, albumin concentrations remained significantly lower in patients with capillary leak syndrome than in those without, whereas hematocrit values were similar in both groups. During cardiopulmonary bypass, patients with capillary leak syndrome also had lower concentrations of complement proteins C3 and C4 but not C1 inhibitor. C3d/C3 ratio and C5a levels were similar in both patient groups. In contrast, histamine liberation during cardiopulmonary bypass was significantly more pronounced in patients with capillary leak syndrome than in those without (725.2 +/- 396.7 pg/ml vs -54.1 +/- 58.4 pg/ml, p < 0.05). Tumor necrosis factor-alpha levels after protamine administration were also significantly higher in patients with capillary leak syndrome (38.1 +/- 10.0 pg/ml vs 15.3 +/- 3.4 pg/ml, p < 0.05). Leukocyte count during and after cardiopulmonary bypass was similar in both patient groups. This study demonstrates increased protein leakage as early as 10 minutes after initiation of.
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                Author and article information

                Journal
                Title: European Journal of Cardio-Thoracic Surgery
                Publisher: Oxford University Press (OUP)
                ISSN (Electronic): 1873-734X
                ISSN (Print): 1010-7940
                Publication date Created: August 2013
                Publication date Created: August 01 2013
                Publication date Created: February 6 2013
                Publication date (Print): August 2013
                Publication date (Print): August 01 2013
                Publication date (Electronic): February 6 2013
                Volume: 44
                Issue: 2
                Pages: 275-281
                Article
                DOI: 10.1093/ejcts/ezt028
                PubMed ID: 23389476
                SO-VID: 264d5f60-643b-46be-b556-bc46e61c545b
                Copyright © © 2013
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