Association between early renal replacement therapy and better survival has been reported in adults with postoperative kidney injury, but not in children undergoing cardiac surgery. We conducted a ...retrospective cohort study of 146 neonates and infants requiring peritoneal dialysis following cardiac surgery in a tertiary referral hospital. A propensity score was used to limit selection bias due to timing of dialysis, and included baseline and intraoperative characteristics, requirement for postoperative extracorporeal membrane oxygenation, and creatinine clearance variation. Inverse probability of treatment weighting resulted in good balance between groups for all baseline and intraoperative variables. After weighting, 30-day and 90-day mortality were compared between the 109 patients placed on dialysis early, within the first day of surgery, and those with delayed dialysis, commencing on the second day of surgery or later, using logistic regression and survival analysis. Mortality was 28.1% at 30 days, and was 36.3% during follow-up. Early dialysis was associated with a 46.7% decrease in the 30-day and a 43.5% decrease in the 90-day mortality rate when compared with delayed dialysis. All other short-term outcome variables were similar. Thus, initiation of peritoneal dialysis on the day of or the first day following surgery was associated with a significant decrease in mortality in neonates and infants with acute kidney injury.
Congenital heart disease can be complicated by pulmonary arterial hypertension (PAH), the reversibility of which is often difficult to predict. We recently reported a lung biopsy study showing ...impaired apoptotic regulation of endothelial cells in irreversible PAH. The objective of the present study was to identify noninvasive biomarkers of endothelial turnover that could be used to identify congenital heart disease patients at risk of irreversible PAH.
Circulating endothelial cells (CECs) isolated with CD146-coated beads and circulating CD34(+)CD133(+) progenitor cells (CPCs) were quantified in peripheral vein, pulmonary artery, and pulmonary vein blood samples from 26 patients with congenital heart disease (16 with reversible PAH median age 2 years and 10 with irreversible PAH median age 9 years) and 5 control patients. Surgical lung biopsy was performed in 19 cases. As expected, endothelial remodeling was observed in irreversible PAH but not in reversible PAH. CEC and CPC numbers were each similar in the 3 types of blood samples. CEC numbers were significantly higher in patients with irreversible PAH (median 57 CEC/mL) than in patients with reversible PAH and control subjects (median 3 CEC/mL in the 2 groups). In contrast, CPC numbers did not differ among patients with irreversible or reversible PAH and control subjects (median 84, 64, and 44 CPC/10(5) lymphocytes, respectively, in the 3 groups).
Irreversible PAH in congenital heart disease is associated with endothelial damage and with increased circulating endothelial cell counts. The present study suggests that CECs could be a valuable tool to define therapeutic strategies in congenital heart disease patients with PAH.
Impaired Apoptosis of Pulmonary Endothelial Cells Is Associated With Intimal Proliferation and Irreversibility of Pulmonary Hypertension in Congenital Heart Disease Marilyne Lévy, Christelle Maurey, ...David S. Celermajer, Pascal R. Vouhé, Claire Danel, Damien Bonnet, Dominique Israël-Biet Markers of apoptosis and angiogenesis were assessed in lung biopsy samples of subjects with pulmonary hypertension (PHT) caused by congenital heart disease (CHD). The antiapoptotic protein Bcl-2 was strongly expressed by pulmonary endothelial cells in irreversible PHT (n = 11) but never in reversible PHT (n = 7) (p < 0.01). Irreversible PHT was also associated with up-regulation of vascular endothelial growth factor and new vessel formation around occluded native vessels (p < 0.01).
Objective: Evaluate the late results of a uniform approach to the surgical management of children with anomalous origin of the left coronary artery from the pulmonary artery (ALCAPA). Methods: ...Between 1986 and 2007, 62 children with ALCAPA underwent surgery. The median age at operation was 16 months (range 10 days to 11 years). A uniform approach was applied, including (1) immediate surgery as soon as the diagnosis was established, (2) direct aortic reimplantation of the anomalous artery, when technically feasible (61/62, 98%), and (3) no concomitant mitral valve surgery, regardless of the severity of mitral regurgitation (59/62, 95%). The mean follow-up was 9.7 years (range 3 months to 21 years) and was 98% complete. Results: There were six hospital deaths (9.7%). Left ventricular assistance was used in four patients; two died of related complications. The poor left ventricular ejection fraction was an incremental risk factor for early mortality (p = 0.043); severity of mitral regurgitation was not. There were two late deaths, yielding an actuarial survival rate of 86% at 15 years. Five patients underwent reoperation (mitral valve repair in three, coronary procedure in two); the actuarial freedom from reoperation was 89% at 15 years. Left ventricular function recovered in all survivors. In the 50 late survivors who did not undergo mitral surgery at initial operation, the severity of mitral regurgitation decreased in 58%, remained unchanged in 40% (of which 3 patients underwent reoperation for mitral valve repair) and worsened in 2%; at last follow-up, mitral regurgitation was absent or trivial in 42%, mild in 50%, moderate in 8% and severe in 0%. Conclusions: (1) Early mortality is related to the severity of preoperative left ventricular dysfunction; it may be reduced by a careful use of postoperative cardiac support techniques. (2) Late results are satisfactory and left ventricular function always recovers. (3) Mitral regurgitation improves along with left ventricular function, but recovery may be incomplete and need reoperation. The data suggest that mitral valve surgery is probably not indicated at initial surgery, except in selected cases with a low potential of recovery (severe regurgitation with relatively well-preserved left ventricular function).
The arterial switch operation has become the treatment of choice for neonates with transposition of the great arteries. Currently, the early mortality rate is low as well as the need for early ...reoperation because of surgical failures; in our experience with 803 neonates, these risks were 3.8% and 1.5%, respectively. The late outcome in terms of survival and functional status is excellent. However, surgical repair is far from anatomical and potential late defects were identified as soon as this procedure was introduced: obstruction of the neo-pulmonary outflow tract, development of obstructions of the reimplanted coronary arteries, dysfunction of the neo-aortic valve, and progressive left ventricular dysfunction. Actually, late reoperations are required in 5–10% of patients (4.5% in our experience with a mean follow-up of 5.8 years). The more frequent indications for reoperation are coronary lesions and right ventricular outflow tract obstructions. Coronary obstructions are, in most cases, detected in patients without any clinical or echocardiographic evidence of myocardial ischaemia. Coronary lesions are progressive and repeated coronary evaluation at regular intervals is necessary. Reoperation is indicated when myocardial ischaemia, at rest or under stress, is demonstrated at myocardial imaging. Satisfactory results can be achieved by surgical coronary patch angioplasty; in selected cases, mammary bypass may be necessary. Right ventricular outflow tract obstruction is related either to inadequate growth of the pulmonary anastomotic site, or to inadequate growth of the whole new right ventricular outflow tract in patients with associated aortic arch obstruction. Reoperation is indicated when significant obstruction (gradient >50 mmHg) is detected at routine echo-Doppler evaluation. Although neo-aortic root dilation and minimal aortic valve insufficiency are common, reoperation for severe neo-aortic valve dysfunction is, to date, very rarely necessary. Whether this will remain the case in the decades to come requires further evaluation. Left ventricular function is maintained in the vast majority of patients. Reoperation may be indicated in some patients for other reasons: mitral valve malformation, tracheo-bronchial compression or pulmonary hypertension.
Outcome of coronary artery bypass grafting performed in young children Legendre, Antoine, MD; Chantepie, Alain, MD, PhD; Belli, Emre, MD ...
Journal of thoracic and cardiovascular surgery/The Journal of thoracic and cardiovascular surgery/The journal of thoracic and cardiovascular surgery,
02/2010, Letnik:
139, Številka:
2
Journal Article
Recenzirano
Odprti dostop
Objectives The long-term patency rate of coronary artery bypass grafting for which arterial grafts are used is known to be high in the pediatric population. However, this issue remains uncertain in ...children under 3 years of age. Here, we report the outcome in this specific population. Methods From July 1988 to July 2007, 18 children less than 3 years of age (age at operation, 0.1–35 months; median, 4 months) underwent 20 coronary artery bypass graft operations using an arterial graft. Indications for bypass grafting were coronary artery complications related to the arterial switch operation for transposition of the great arteries in 12 patients (coronary obstruction in 8 patients, peroperative coronary anomalies precluding coronary transfer in 4 patients), congenital anomalies of the coronary arteries in 4 patients, and Kawasaki disease in 2 patients. Results After a mean follow-up of 55 months (range, 1–176 months; median, 41 months), patency of 19 bypass grafts was assessed. One was occluded and 2 have necessitated a percutaneous procedure. Two patients died suddenly (1 with an occluded graft and 1 with a patent graft and hypertrophic myocardiopathy) 3.5 and 4.6 months, respectively, after bypass grafting. Conclusions Coronary artery bypass grafting should be considered as a possible alternative for coronary revascularization in young children. Although our series shows quite a good patency rate, this procedure remains a technical challenge and requires careful follow-up.
Objective: To evaluate the impact of coronary patterns with intramural arteries on the outcome of arterial switch operation (ASO) in neonates with transposition of the great arteries (TGA). Methods: ...Between 1987 and 2008, 919 neonates underwent ASO for TGA. Forty-six (5.0%) had intramural coronary arteries. Intramural course involved the left main coronary artery in 28 of the 46 cases (61%), the left anterior descending artery in 12 patients (26%), the right coronary artery in three and both right and left coronary arteries in three cases. Various techniques were used to manage the coronary arteries: ASO without coronary relocation in one, ASO with coronary transfer as a single coronary button in nine and ASO with coronary transfer as two separate buttons in 36 patients (additional pericardial patches were implanted to orientate the coronary button in nine cases or enlarge the coronary ostium in three cases). The intramural course was unroofed in most cases (after 1995). Results: There were 13 deaths (28%): two intra-operative, nine before discharge from the hospital and two after discharge; during the same period, overall mortality in the 873 neonates with other coronary patterns was 3.9%. Actuarial survival at 10 years was 71 ± 7%. Most deaths (11/13, i.e., 85%) were related to coronary complications. No time–trend effect was noted regarding mortality. Non-fatal coronary lesions were detected in eight patients (three with clinical evidence of myocardial infarction and five without). Five patients underwent re-operation for coronary revascularisation. Actuarial freedom from coronary events at 10 years was 46 ± 10%. After a mean follow-up of 8.3 ± 4.8 years, left ventricular function was normal in 97% of the survivors; minor ischaemic sequelae were present in two patients. Conclusions: Coronary patterns with intramural arteries remain associated with high coronary mortality and morbidity following neonatal ASO, even in the current era. The association of slit-like deformation of the ostium, stenosis of the intramural course and abnormal angle of take-off might explain the difficulty in coronary transfer. The technique of coronary transfer should be individually adapted to each anatomical situation. The place of patch ostioplasty of the intramural artery remains to be determined.
Abstract Anomalous aortic origin of a coronary artery is a congenital anomaly in which a major coronary artery arises from the wrong sinus of Valsalva (left coronary from right sinus or right ...coronary from left sinus) and courses between the great arteries before reaching its normal epicardial course. Although the risk of sudden death is clearly established, the indications for surgery remain controversial. The risk of sudden death is increased in symptomatic patients, in anomalous left coronary artery, as well as in the presence of some risk factors (intense physical activity, young age <35 years, aggravating anatomical features intramural interarterial course, slit-like ostium, acute angle of take-off). As far as is currently known, surgical management using an anatomical repair can prevent sudden death, provided that normal coronary anatomy and function are achieved and that extensive return-to-play testing is performed. A precise evaluation of the benefit/risk ratio is mandatory on an individual basis, but surgery may be indicated in the vast majority of patients.
Objective: To evaluate the results of surgical revascularization in children with coronary artery lesions following neonatal arterial switch operation (ASO). Methods: Among 755 neonates who underwent ...ASO, there were 713 late survivors (94%). Coronary lesions were detected in 34 patients (5%). Coronary revascularization was carried out in 19 children (mean age: 5.6 ± 3.2 years) in whom myocardial ischemia was demonstrated by myocardial perfusion imaging studies. Coronary lesions involved the left main coronary artery in 14 cases, the left anterior descending artery in 3, and the right coronary artery in 2. Sixteen patients had coronary angioplasty (left main coronary artery in 11, left anterior descending artery in 3, right coronary artery in 2). Two patients underwent a mammary bypass and one had a saphenous vein proximal bypass. Results: There was no mortality or coronary event. Mean follow-up was 6.3 ± 2.8 years. Patency of coronary repair was demonstrated in all patients; however, in one child with angioplasty of the left main coronary artery, there was a residual stenosis of the left anterior descending artery, and reoperation with a mammary bypass was required. Myocardial perfusion imaging was performed in 18 patients; myocardial perfusion was normal in 16 and 2 had minimal residual perfusion defects. Treadmill exercise testing was performed in 11 patients and was normal in all. Conclusions: (1) Following ASO, coronary lesions are not uncommon and they are progressive. Routine and sequential coronary evaluation is necessary. (2) Coronary revascularization can be achieved using coronary angioplasty in most cases. Mammary bypass may be used in selected circumstances. Normal myocardial perfusion is restored in most patients.
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