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1.
Sci Rep ; 14(1): 2493, 2024 01 30.
Article in English | MEDLINE | ID: mdl-38291336

ABSTRACT

We investigated the impact of distance covered in the six-minute walk test (6mWT) before being discharged from the hospital after cardiac surgery on the risk of all-cause mortality. Our study included 1127 patients who underwent cardiac surgery and then took part in a standardised physiotherapist-supervised inpatient rehabilitation programme during 2007-2017. The percentage of the predicted 6mWT distance, and the lower limit of normal distance was calculated based on individual patients' age, sex, and body mass index. We used Cox regression with adjustment for confounders to determine multivariable-adjusted hazard ratios (HRs) for mortality. Over a median follow-up period of 6.4 (IQR: 3.5-9.2) years, 15% (n = 169) patients died. We observed a strong and independent inverse association between 6mWT distance and mortality, with every 10 m increase in distance associated to a 4% reduction in mortality (HR: 0.96, 95% CI 0.94-0.98, P < 0.001). Those in the top tertile for predicted 6mWT performance had a 49% reduced risk of mortality (HR: 0.51, 95% CI 0.33-0.79) compared to those in the bottom tertile. Patients who met or exceeded the minimum normal 6mWT distance had 36% lower mortality risk (HR: 0.64, 95% CI 0.45-0.92) compared to those who did not meet this benchmark. Subgroup analysis showed that combined CABG and valve surgery patients walked less in the 6mWT compared to those undergoing isolated CABG or valve surgeries, with a significant association between 6mWT and mortality observed in the isolated procedure groups only. In conclusion, the longer the distance covered in the 6mWT before leaving the hospital, the lower the risk of mortality.


Subject(s)
Cardiac Surgical Procedures , Patient Discharge , Humans , Walk Test , Walking , Time Factors , Exercise Test
2.
Eur J Cardiothorac Surg ; 64(4)2023 10 04.
Article in English | MEDLINE | ID: mdl-37707826

ABSTRACT

OBJECTIVES: We reviewed the mid- and long-term surgical outcomes of patients with subaortic stenosis (SAS). METHODS: Patients operated for SAS from April 1990 to August 2016 were reviewed retrospectively. Patients with major associations such as aortic arch obstruction were excluded. Time to reintervention and predictors of recurrence were assessed using Kaplan-Meier analysis, log-rank test and uni/multivariable Cox regression. RESULTS: 120 patients at a median age of 4.7 years (interquartile range 2.9, 8.1) underwent primary operation (median peak preoperative left ventricular outflow tract gradient 52.5 mmHg, interquartile range 40, 70) involving fibrous tissue excision (n = 120) with septal myectomy (93%; n = 112) as the procedure of choice.At median follow-up of 13 years (interquartile range 7, 18), freedom from reintervention at 1, 3, 5 and 10 years was 99% (95% confidence interval 94%, 99%), 94% (87%, 97%), 93% (86%, 96%) and 90% (82%, 94%), respectively. Recurrence occurred in 18% (n = 20) with 15 patients undergoing reinterventions, 13 of whom required radical reoperation. Multivariable analysis revealed higher preoperative peak left ventricular outflow tract gradient (hazard risk 1.06, confidence interval 1.03, 1.09, P < 0.001), and presence of bicuspid aortic valve (hazard risk 14.13, confidence interval 3.32, 60.1, P < 0.001) as predictors for reintervention. Mild/moderate aortic regurgitation occurred in 49% (n = 55) of patients at the most recent follow-up. CONCLUSIONS: Reintervention for recurrent SAS is common, predicted by higher preoperative peak left ventricular outflow tract gradient, and presence of bicuspid aortic valve, and frequently involves a radical procedure. Aortic regurgitation is a major consequence of SAS, but its severity usually remains low. CLINICAL REGISTRATION NUMBER: SCHN HREC reference number 2019/ETH02729, approved on 09 July 2019.


Subject(s)
Aortic Valve Insufficiency , Bicuspid Aortic Valve Disease , Cardiomyopathy, Hypertrophic , Ventricular Outflow Obstruction , Child, Preschool , Humans , Aortic Valve Insufficiency/surgery , Bicuspid Aortic Valve Disease/surgery , Cardiomyopathy, Hypertrophic/surgery , Constriction, Pathologic , Follow-Up Studies , Reoperation , Retrospective Studies , Treatment Outcome , Ventricular Outflow Obstruction/surgery , Child
3.
Semin Thorac Cardiovasc Surg ; 35(2): 377-386, 2023.
Article in English | MEDLINE | ID: mdl-35584774

ABSTRACT

We studied the effect of various coronary transfer techniques (CTT) on neo-aortic root size after an arterial switch operation (ASO) in simple transposition by excluding the impact of recognized predisposing factors. One hundred and seventy-eight patients with simple transposition were reviewed retrospectively (January 2004-December 2018) and grouped as Punch Hole (n = 83/178), Nonpunch Hole (n = 65/178; Trapdoor or Standard) and Mixed (n = 30/178). Factors predicting the neo-aortic root z-scores- annulus, mid-sinus, and sinotubular junction (STJ) were analyzed by uni/multivariable linear regression. Follow-up was 6 years, Interquartile range (IQR) 3.4,10.6. Preoperative aortic (7.4 mm, IQR 6.9,8) and pulmonary annulus (7.5 mm, IQR 6.8,8.1) sizes were identical (P = 0.831). The changes in preoperative, postoperative, and latest median z-scores for neo-aortic annulus (-0.2, IQR -1.2,0.9; 0.0, IQR -0.9,0.9; 0.9, IQR -0.4,2.6; P < 0.001), mid-sinus (1.1, IQR-0.1,2; 2.6, IQR 1.6,3.7; 2.9, IQR 1.8,4.3; P < 0.001) and STJ (-0.1, IQR -0.8,1.1; 2.1, IQR 0.7,3; 2.4, IQR 1,3.5; P < 0.001) were significant. On multivariate analysis, preoperative pulmonary annulus z-score predicted the latest neo-aortic annulus z-score [Beta estimate (BE) = 0.32, 95% confidence interval (CI) = 0.03,0.62; P = 0.03] and STJ z-score (BE= 0.45, 95% CI= 0.20,0.70; P < 0.0001). CTT did not predict any of the latest neo-aortic z-scores (all P > 0.05). Mild plus neo-aortic regurgitation (neoAR) was not significantly different across CTT groups [punch hole 20% (n = 15/74), mixed 37% (n = 11/30), nonpunch hole 21% (n = 13/62); Fisher-exact P = 0.186], one patient required valve replacement for severe neoAR. The neo-aortic root enlarges significantly over time at all 3 levels following an ASO in simple transposition, however, this is not significantly influenced by the CTT utilized.


Subject(s)
Aortic Valve Insufficiency , Arterial Switch Operation , Transposition of Great Vessels , Humans , Transposition of Great Vessels/diagnostic imaging , Transposition of Great Vessels/surgery , Retrospective Studies , Treatment Outcome , Aorta/surgery , Aortic Valve Insufficiency/diagnostic imaging , Aortic Valve Insufficiency/etiology , Aortic Valve Insufficiency/surgery , Follow-Up Studies
4.
Semin Thorac Cardiovasc Surg ; 34(2): 618-629, 2022.
Article in English | MEDLINE | ID: mdl-34508814

ABSTRACT

We investigated patients with transposition anatomy suitable for the arterial switch operation (ASO) to evaluate a simplified approach to prediction of reintervention. A retrospective review was performed of 180 consecutive patients who underwent ASO from 2009 to 2018. Patients were classified as Category I (n = 122) d-transposition of great arteries (dTGA) + intact ventricular septum, Category II (n = 28) dTGA + ventricular septal defect (VSD) and Category III (n = 30) dTGA + Aortic arch obstruction (AAO) +/- VSD or Taussig-Bing Anomaly (TBA) +/- AAO. Outcomes included reintervention-free survival (using Kaplan-Meier estimates) and predictors of reintervention. Median follow up was 3.3 (interquartile range 1.7-5.8) years with no difference between categories(P = 0.082). There were 3 mortalities- 2 early (one each in Category I and II) and one late (in Category I). Reintervention-free survival for the whole group at 1, 3, 5 and 8 years was 94%, 91%, 90% and 86% respectively. Conventional criteria predicting reintervention included the presence of TBA(P = 0.0054) and AAO(P = 0.027). Low birth weight did not predict reintervention(P = 0.2). When analyzed by category, multivariable analysis showed that patients in Category III carried a high risk of reintervention [Hazard risk (HR) = 7.43, 95% confidence interval (CI)=(2.39, 23.11), P < 0.001], but so did those in Category II [HR=6.90, 95% CI = (2.19, 21.75, P < 0.001] when compared to Category I. Conventional risk factors for technical difficulty may not be the best predictors of reintervention. A simplified approach highlights Category II patients (dTGA + VSD) as being at substantial risk of re-intervention, and not part of a low risk cohort.


Subject(s)
Aortic Diseases , Arterial Switch Operation , Double Outlet Right Ventricle , Heart Septal Defects, Ventricular , Transposition of Great Vessels , Aortic Diseases/surgery , Arterial Switch Operation/adverse effects , Double Outlet Right Ventricle/surgery , Follow-Up Studies , Heart Septal Defects, Ventricular/diagnostic imaging , Heart Septal Defects, Ventricular/surgery , Humans , Infant , Reoperation , Retrospective Studies , Transposition of Great Vessels/diagnostic imaging , Transposition of Great Vessels/surgery , Treatment Outcome
5.
Interact Cardiovasc Thorac Surg ; 34(3): 431-437, 2022 02 21.
Article in English | MEDLINE | ID: mdl-34633029

ABSTRACT

OBJECTIVES: There are limited data available on the height of the ventricular component of the septal deficiency (VSD) in patients undergoing complete atrioventricular septal defect (CAVSD) repair. VSD height may influence optimal choice of repair strategy with potential consequences for long-term outcomes. We aimed to measure VSD height using 2-dimensional echocardiography and review its association with postoperative outcomes. METHODS: We retrospectively reviewed the preoperative echocardiograms of 45 consecutive patients who underwent CAVSD repair between May 2010 and December 2015 at a single centre. VSD height and left ventricular length on the four-chamber view were measured. Demographic details and early and late outcomes including reoperation and long-term survival were studied. RESULTS: Twenty patients underwent modified single-patch repair and 25 patients underwent double-patch repair of CAVSD. VSD height in the modified single-patch group ranged from 4.2 to 11.7 mm and in the double-patch group ranged from 5.1 to 14.9 mm. Nine patients had a deep 'scoop' with a VSD height of >10 mm, (7 double patch, 2 modified single patch). VSD height did not correlate with a specific Rastelli classification. There was no significant difference in the VSD height (P = 0.51) or the VSD height-to-left ventricular length ratio (P = 0.43) between the 2 repair groups. There was no 30-day mortality. Eight patients required reoperation; however, VSD height was not a significant predictor of reoperation (hazard ratio 0.95, 95% confidence interval 0.69-1.33; P = 0.08). CONCLUSIONS: There was no correlation between VSD height and risk of reoperation after CAVSD repair. A deep ventricular scoop is uncommon in CAVSD patients.


Subject(s)
Heart Septal Defects, Ventricular , Heart Septal Defects , Heart Septal Defects/diagnostic imaging , Heart Septal Defects/surgery , Heart Septal Defects, Ventricular/diagnostic imaging , Heart Septal Defects, Ventricular/surgery , Humans , Infant , Reoperation , Retrospective Studies , Treatment Outcome
6.
JTCVS Tech ; 9: 111-120, 2021 Oct.
Article in English | MEDLINE | ID: mdl-34647077

ABSTRACT

OBJECTIVE: To study the outcomes of a novel modified pulmonary artery banding (mPAB) technique used for staged repair of a subset of patients with complex transposition physiology. METHODS: A total of 13 patients who underwent mPAB during their staged repair (biventricular repair [BVR], n = 6) or palliation (1-1/2 repair, n = 1; univentricular repair [UVR], n = 6) from 2004 to 2020 were studied retrospectively. A restrictive interposition graft was used to reconstruct the main PA between the pulmonary root and the distal pulmonary confluence, functioning as a mPAB. Twelve of the 13 patients (92.3%) underwent a concurrent arterial switch operation (ASO), of which 6 were palliative ASOs for 1-1/2 repair (n = 1) or UVR (n = 5). Patient weight and cardiac anatomy determined the size of interposition graft. RESULTS: The disease spectrum included dextro transposition of the great arteries (d-TGA) with multiple ventricular septal defects (VSDs) (n = 4), Taussig-Bing anomaly (n = 3), d-TGA with VSD and hypoplastic right ventricle (RV) (n = 3), double-inlet left ventricle with l-TGA (n = 2), and congenitally corrected TGA with double-outlet RV (n = 1). The Lecompte procedure was performed in 10 patients. Predischarge echocardiography revealed a band gradient of 61 mm Hg (interquartile range [IQR], 40-90 mm Hg) for BVR/1-1/2 ventricular repair (n = 7) and 49 mm Hg (IQR, 37-61 mm Hg) for UVR (n = 6). Survival was 100% at a median follow-up of 3.7 years (IQR, 2.6-4.0 years). CONCLUSIONS: The mPAB technique is effective and reproducible for staged BVR or UVR for patients with TGA. It effectively regulates pulmonary blood flow, may reduce neopulmonary root distortion, and eliminates complications associated with band migration in standard PAB.

7.
Eur J Cardiothorac Surg ; 61(1): 45-53, 2021 Dec 27.
Article in English | MEDLINE | ID: mdl-34002204

ABSTRACT

OBJECTIVES: Previous studies investigating risk factors associated with reoperation or mortality after repair of complete atrioventricular septal defect (CAVSD) often have not included sizeable cohorts undergoing modified single-patch repair. Both double patch and modified single-patch techniques have been widely used in Australia since the 1990s. Using a large multi-institutional cohort, we aimed to identify risk factors associated with reoperation or mortality following CAVSD repair. METHODS: Between January 1990 and December 2015, a total of 829 patients underwent biventricular surgical repair of CAVSD in Australia at 4 centres. Patients with associated tetralogy of Fallot and other conotruncal abnormalities were excluded. Demographic details, postoperative outcomes including reoperation and survival, and associated risk factors were analysed. RESULTS: Fifty-six patients (6.8%) required early reoperation (≤30 days) for significant left atrioventricular valve regurgitation or residual septal defects. Freedom from reoperation at 10, 15 and 20 years was 82.7%, 81.1% and 77%, respectively. Patients without Down syndrome and moderate left atrioventricular valve regurgitation on postoperative echocardiogram were found to be independent risk factors for reoperation. Operative mortality was 3.3%. Overall survival at 10, 15 and 20 years was 91.7%, 90.7% and 88.7%, respectively. Prior pulmonary artery banding was a predictor for mortality, while later surgical era (2010-2015) was associated with a reduction in mortality risk. CONCLUSIONS: Improved survival in the contemporary era is in keeping with improvements in surgical management and higher rates of primary CAVSD repair over time. The presence of residual moderate left atrioventricular valve regurgitation on postoperative echocardiography is an important factor associated with reoperation and close surveillance is essential to allow timely reintervention. Primary CAVSD repair at age <3 months should be preferenced to palliation with pulmonary artery banding due to the association of pulmonary artery banding with mortality in the long-term.


Subject(s)
Heart Septal Defects , Heart Septal Defects/surgery , Humans , Infant , Reoperation , Retrospective Studies , Treatment Outcome
8.
J Thorac Cardiovasc Surg ; 159(3): 1014-1025.e8, 2020 03.
Article in English | MEDLINE | ID: mdl-31590953

ABSTRACT

OBJECTIVES: To evaluate whether the long-term outcomes of modified-single-patch (MSP) repair of complete atrioventricular septal defect are equivalent to double-patch (DP) repair with respect to survival and risk of reoperation for left atrioventricular valve regurgitation or left ventricular outflow tract obstruction. METHODS: All patients who underwent biventricular repair of complete atrioventricular septal defect in Australia from 1990 to 2015 using either a MSP or DP technique were identified. Demographic characteristic details, operative data, and outcomes were analyzed. A propensity score analysis was performed to balance the 2 treatment groups according to several baseline covariates. Survival and freedom from reintervention between the 2 groups were compared using Kaplan-Meier curves and log-rank tests. RESULTS: A total of 819 patients underwent repair of complete atrioventricular septal defect (252 MSP and 567 DP) during the study period. There was no significant difference in unmatched survival (P = .85) and event-free survival (P = .49) between MSP and DP repair. Propensity score matching resulted in a total of 223 matched pairs. Matched analysis found no difference in overall survival (P = .59) or event-free survival (P = .90) between repair techniques, with an estimated event-free survival at 5, 10, and 15 years of 83%, 83%, and 74% for DP and 83%, 80%, and 77% for the MSP group, respectively. There was no significant difference between repair techniques in reoperation for left atrioventricular valve regurgitation or left ventricular outflow tract obstruction or need for permanent pacemaker. CONCLUSIONS: Overall and event free survival are similar following either MSP or DP repair of complete atrioventricular septal defect. There is no increased risk of reoperation for left ventricular outflow tract obstruction with the MSP technique.


Subject(s)
Cardiac Surgical Procedures , Heart Septal Defects/surgery , Australia/epidemiology , Cardiac Surgical Procedures/adverse effects , Databases, Factual , Female , Heart Septal Defects/diagnosis , Heart Septal Defects/mortality , Heart Septal Defects/physiopathology , Humans , Infant , Male , Mitral Valve Insufficiency/mortality , Mitral Valve Insufficiency/physiopathology , Mitral Valve Insufficiency/surgery , Progression-Free Survival , Reoperation , Retrospective Studies , Risk Assessment , Risk Factors , Time Factors , Ventricular Outflow Obstruction/mortality , Ventricular Outflow Obstruction/physiopathology , Ventricular Outflow Obstruction/surgery
9.
World J Pediatr Congenit Heart Surg ; 10(4): 475-484, 2019 07.
Article in English | MEDLINE | ID: mdl-31307299

ABSTRACT

BACKGROUND: Management of hypoplastic left heart syndrome (HLHS) presents many challenges. We describe our institutional outcomes for management of patients with HLHS over the past 12 years and highlight our strategy for those with highly restrictive/intact interatrial septum (R/I-IAS). METHODS: Eighty-eight neonates with HLHS underwent surgical treatment, divided equally into Era-I (n = 44, April 2006 to February 2013) and Era-II (n = 44, March 2013 to June 2018). Up to 2013, all patients with R/I-IAS were delivered at an adjacent adult hospital and then moved to our hospital for intensive care and management. From 2014, these patients were delivered at a co-located theatre in our hospital with immediate atrial septectomy. The hybrid approach was occasionally used with preference for the Norwood procedure for suitable candidates. RESULTS: One-year survival after Norwood procedure was 62.5% and 80% for Era-I and Era-II (P = not significant (ns)), respectively, and 41% of patients were categorized as high risk using conventional criteria. Survival at 1 year differed significantly between high-risk and standard-risk patients (P = 0.01). For high-risk patients, survival increased from 42% to 65% between eras (P = ns). In the R/I-IAS subgroup (n = 15), 11 underwent Norwood procedure after emergency atrial septectomy. Of these, seven born at the adjacent adult hospital had 40% survival to stage II versus 60% for the four born at the colocated theatre. Delivery in a colocated theatre reduced the birth-to-cardiopulmonary bypass median time from 445 (150-660) to 62 (52-71) minutes. CONCLUSION: Reported surgical outcomes are comparable to multicenter reports and international databases. Proactive management for risk factors such as R/I-IAS may contribute to improved overall outcomes.


Subject(s)
Atrial Septum/surgery , Hypoplastic Left Heart Syndrome/surgery , Norwood Procedures/methods , Atrial Septum/diagnostic imaging , Echocardiography , Female , Humans , Hypoplastic Left Heart Syndrome/diagnosis , Hypoplastic Left Heart Syndrome/mortality , Infant, Newborn , Male , New South Wales/epidemiology , Postoperative Period , Retrospective Studies , Risk Factors , Survival Rate/trends , Treatment Outcome
10.
Asian Cardiovasc Thorac Ann ; 25(6): 432-439, 2017 Jul.
Article in English | MEDLINE | ID: mdl-28610439

ABSTRACT

Background Successful anatomic repair of congenitally corrected transposition of the great arteries achieves excellent outcomes. Several centers report excellent long-term survival with the Fontan pathway as well. We have selectively applied both approaches depending on individual patient morphology, with anatomic repair preferred but utilizing the Fontan pathway when high technical complexity or operative risk is anticipated. Methods Hospital records over an 18-year period (1998-2016) were reviewed to identify patients with congenitally corrected transposition of the great arteries who underwent surgical management. Physiological repairs and hypoplastic ventricles were excluded. Patient- and procedure-related variables were reviewed. Results We identified 19 patients. Group 1 consisted of 12 anatomic repairs, of which 10 (83.3%) required prior interim staging procedures. Mean age at anatomic repair was 2.6 ± 1.3 years, mean follow-up was 8.7 ± 5.3 years. Nine (75%) patients experienced important complications and 4 (33.3%) required reintervention during follow-up. There were no deaths; one patient required heart transplantation. Group 2 (7 patients) underwent Fontan palliation. Mean age at Fontan completion was 7.2 ± 3.8 years, mean follow-up was 6.3 ± 4 years. There was no reintervention, death, or transplant. Conclusion Patients with congenitally corrected transposition of the great arteries and two adequate-sized ventricles do well with both anatomic repair and the Fontan pathway in the medium term. Excellent outcomes with reduced early complication and reintervention rates can be achieved for this cohort of patients when a strategy of avoiding complex anatomic repair in favor of the Fontan pathway is used.


Subject(s)
Cardiac Surgical Procedures/methods , Fontan Procedure , Transposition of Great Vessels/surgery , Adolescent , Cardiac Surgical Procedures/adverse effects , Child , Child, Preschool , Clinical Decision-Making , Congenitally Corrected Transposition of the Great Arteries , Databases, Factual , Female , Fontan Procedure/adverse effects , Heart Transplantation , Humans , Infant , Kaplan-Meier Estimate , Male , Patient Selection , Postoperative Complications/etiology , Risk Factors , Time Factors , Transposition of Great Vessels/diagnosis , Transposition of Great Vessels/physiopathology , Treatment Outcome
11.
ANZ J Surg ; 85(6): 466-71, 2015 Jun.
Article in English | MEDLINE | ID: mdl-23419003

ABSTRACT

BACKGROUND: Early survival and quality of outcome after surgery for hypoplastic left heart syndrome (HLHS) are influenced by patient-specific factors, the quality of surgery and perioperative care. Some skills are common to the care of other complex neonatal presentations but integrating this expertise is a key challenge for new programmes. We began offering surgery for HLHS from 2006 and provided a regional service from January 2009 and report early outcomes. METHODS: Prospectively collected data for neonates with HLHS undergoing surgical palliation from January 2006 until June 2011 were analysed. Standard definitions of high-risk and standard-risk presentations were utilized. RESULTS: Thirty neonates underwent surgical palliation of HLHS with a modified Norwood procedure with an overall survival to stage II palliation of 80%. A total of 46.7% of our patients were categorized as high-risk, mostly on the basis of low birth weight. Survival to stage II palliation was 100% in standard-risk patients and 57.1% in the high-risk group. CONCLUSION: Outcomes for this new programme are comparable to reported outcomes demonstrating the feasibility of integrating a new complex procedure within an existing multidisciplinary unit handling large volumes of other complex neonatal work. Excellent outcomes can be achieved in standard-risk patients. Outcomes in the high-risk group may be improved by alternative approaches and rigorous case selection.


Subject(s)
Hypoplastic Left Heart Syndrome/surgery , Norwood Procedures , Palliative Care , Regional Medical Programs , Female , Humans , Hypoplastic Left Heart Syndrome/mortality , Infant, Newborn , Male , Norwood Procedures/methods , Palliative Care/methods , Postoperative Care/methods , Program Evaluation , Retrospective Studies , Survival Analysis , Treatment Outcome
12.
Heart Lung Circ ; 20(7): 460-7, 2011 Jul.
Article in English | MEDLINE | ID: mdl-21514216

ABSTRACT

BACKGROUND: We sought to compare overall mortality with neonatal outcomes over a five year period to define risk factors for mortality and service development priorities. METHODS: A retrospective cohort study of surgical outcomes following repair or palliation of structural congenital heart defects January 2005-2010. We defined mortality according to contemporary international guidelines and classified surgical procedures using the Risk Adjustment in Congenital Heart Surgery (RACHS-1) score. The effect of age and weight at operation on mortality and annual variation in case-complexity and surgeon case-mix were assessed. Subgroup analysis was performed in patients who were ≤30 days at operation (neonates). RESULTS: Overall mortality within 30 days of operation or prior to hospital discharge was 1.3 and 1.9%, respectively. Mortality was higher in neonates (6.8%) and low birth weight infants (≤2.5kg) (12.1%). Mortality was similar in bypass versus non-bypass procedures (odds ratio 0.74, p=0.425). Annual mortality rates were consistent despite a marked increase in case-complexity. Neonates overall required longer periods of intensive care support and were more likely to suffer serious complications compared to older children. Age, weight and RACHS-1 score were independent risk factors for mortality on multivariate analysis. In neonates undergoing bypass procedures, only RACHS-1 score was a significant risk factor. CONCLUSIONS: This study provides an accurate and contemporary audit of mortality risk associated with congenital heart surgery. Outcomes compare favourably to international benchmarks but highlight the risks of morbidity and mortality associated with neonatal cardiac surgery.


Subject(s)
Cardiac Surgical Procedures/mortality , Heart Defects, Congenital/mortality , Heart Defects, Congenital/surgery , Child, Preschool , Female , Humans , Infant , Infant, Low Birth Weight , Infant, Newborn , Male , Retrospective Studies , Risk Factors , Time Factors
13.
Heart Lung Circ ; 17(5): 407-10, 2008 Oct.
Article in English | MEDLINE | ID: mdl-18403261

ABSTRACT

BACKGROUND: The prevalence of thrombosis after the Fontan procedure depends upon the surgical technique used and the method of detection employed. Current investigations for thrombosis lack sensitivity and specificity or, in the paediatric population, require a general anaesthetic. We undertook a study to examine the feasibility of using magnetic resonance imaging (MRI) to detect thrombosis within the conduit, cardiac chambers and pulmonary arteries after the extracardiac conduit modification of the Fontan procedure. METHODS: Of the 50 children who had undergone this procedure at our institution between 1997 and 2002, 26 were eligible for, and 13 underwent, MRI study. The mean age was 10.2 years (range 8.2-16.8 years, median 9.5 years) and the average time from operation was 63 months (range 29-79 months, median 68 months). The mean age at Fontan operation was 4.9 years (range 2.1-10.5 years). Ten were on low dose aspirin, two were on warfarin and one was not anti-coagulated. In all cases, satisfactory imaging of the venous pathways and pulmonary arteries was obtained and there were no thrombi detected. CONCLUSIONS: We conclude that MRI is a potentially useful tool for the detection of thrombus in patients who have undergone the Fontan operation.


Subject(s)
Fontan Procedure , Magnetic Resonance Imaging , Thrombosis/diagnostic imaging , Child , Child, Preschool , Cohort Studies , Cross-Sectional Studies , Echocardiography, Transesophageal , Extracorporeal Circulation/adverse effects , Female , Fontan Procedure/adverse effects , Humans , Male , Prevalence , Radiography , Thrombosis/epidemiology , Thrombosis/etiology
14.
J Paediatr Child Health ; 43(5): 370-5, 2007 May.
Article in English | MEDLINE | ID: mdl-17489827

ABSTRACT

AIM: To describe cardiac surgery, survival and outcomes for low-birthweight (< or = 2500 g) infants undergoing surgery for congenital heart disease. METHODS: Using data from a prospectively collected population-based database of admissions to neonatal intensive care units in New South Wales and the Australian Capital Territory, we identified all low-birthweight infants undergoing cardiac surgery between 1992 and 2001. Infants with only a persistent ductus arteriosus were excluded. Two-year cardiac and neurodevelopmental outcome data were sought from hospital medical records. RESULTS: A total of 121 low-birthweight infants underwent cardiac surgery, of whom 34% had a congenital syndrome or non-cardiac birth defect. Most (81%) underwent a palliative surgical procedure in the neonatal period. There were 19 early (15.7%) and 19 late deaths giving a 2-year mortality of 31%. Factors associated with mortality included birthweight below 1500 g (P = 0.006), low weight at surgery (P = 0.028) and Apgar score at 1 min (P = 0.019). No single factor predicted 30-day mortality. By 2 years of age, 27 (33% of survivors) were known to have neurodevelopmental delay. Although 22 children are known to be developing normally, the neurodevelopmental status of 34 children was not known. CONCLUSIONS: These surgical data were comparable to previous single-institution studies. This group had a high risk of disability due to prematurity, low birthweight and associated conditions. There is a need to prospectively assess and manage neurodevelopmental outcomes in this group.


Subject(s)
Heart Defects, Congenital/surgery , Infant, Low Birth Weight , Outcome Assessment, Health Care , Australian Capital Territory , Female , Humans , Infant , Infant, Newborn , Male , New South Wales , Prospective Studies
15.
Ann Thorac Surg ; 78(2): 650-7; discussion 657, 2004 Aug.
Article in English | MEDLINE | ID: mdl-15276539

ABSTRACT

BACKGROUND: Patients with double inlet left ventricle/l-transposition and similar morphologies have their systemic outflow traverse a bulboventricular foramen (BVF), which has a propensity to narrow over time. A Norwood procedure may be performed as the initial palliation. We prefer aortic arch repair and pulmonary artery banding, delaying Damus-Kaye-Stansel (DKS) or BVF resection until the second palliation. The aims of this study were to compare our results with those reported for Norwood strategy and examine the development of systemic outflow obstruction. METHODS: Retrospective study of patients with double inlet left ventricle, L-TGA or similar morphology presenting between 1990 and 2000. Follow-up with clinical assessment, echocardiography and catheter studies. RESULTS: Twenty-five patients had initial palliation with pulmonary artery banding with repair of any associated arch obstruction. Twelve patients had DKS performed as part of their second stage procedure, and 3 had DKS performed later for recurrent stenosis after prior enlargement of BVF. Six patients had BVF resection without later restenosis and 4 patients did not develop BVF stenosis. There was one early death (4%) and two late (8%). Fontan completion was achieved in 20 of the 22 survivors. There were no cases of DKS obstruction, no pulmonary valve had more than mild regurgitation. CONCLUSIONS: Our approach achieves low operative mortality and morbidity and compares favorably with reported results for Norwood palliation. The significant rate of systemic outflow obstruction in those who did not undergo DKS at the second stage confirms the utility of early DKS in children with this morphology.


Subject(s)
Heart Ventricles/abnormalities , Heart Ventricles/surgery , Aorta, Thoracic/surgery , Aortic Coarctation/surgery , Cardiac Surgical Procedures/methods , Cardiac Surgical Procedures/statistics & numerical data , Cohort Studies , Follow-Up Studies , Fontan Procedure , Humans , Ligation , Palliative Care , Postoperative Complications/etiology , Postoperative Complications/mortality , Pulmonary Artery/surgery , Retrospective Studies , Surgical Flaps , Time Factors , Treatment Outcome , Tricuspid Atresia/surgery , Ventricular Outflow Obstruction/etiology
16.
Ann Thorac Surg ; 77(6): 2029-33, 2004 Jun.
Article in English | MEDLINE | ID: mdl-15172259

ABSTRACT

BACKGROUND: Aneurysm at previous coarctation repair may be seen more frequently as children operated for this condition survive into adulthood. We use deep hypothermic circulatory arrest to repair these aneurysms. METHODS: A case series was conducted using 12-year, single-institution, retrospective chart review. RESULTS: Twenty-one patients underwent left thoracotomy and repair of aneurysm at the site of previous coarctation repair. Three cases presented emergently as aortobronchial fistulas. The age range was 16 to 73 years (median, 26 years). The median circulatory arrest time was 33 minutes (range, 22 to 55 minutes). Repair involved interposition graft replacement. Six patients required additional tube graft replacement of the left subclavian artery. There was 1 operative mortality in a patient having a hypoxic brain injury secondary to an anaphylactic reaction to a plasma expander. There were no embolic strokes or paraplegia. One patient had a recurrent laryngeal nerve paresis. There was 1 case of Horner's syndrome after subclavian artery replacement. CONCLUSIONS: Circulatory arrest allows for the accurate repair of this difficult pathologic process and avoids the risk of clamp-related injuries. Follow-up out to 16 years demonstrates this technique of repair to be durable, with no late deaths or reoperations for recurrent aneurysm.


Subject(s)
Aortic Aneurysm/surgery , Aortic Coarctation/surgery , Heart Arrest, Induced , Adolescent , Adult , Aged , Aortic Aneurysm/complications , Aortic Coarctation/complications , Blood Vessel Prosthesis Implantation , Cardiopulmonary Bypass , Cardiovascular Surgical Procedures/methods , Female , Humans , Male , Middle Aged , Postoperative Complications , Reoperation , Retrospective Studies
17.
Hist Psychol ; 1(1): 52-68, 1998 Feb.
Article in English | MEDLINE | ID: mdl-11620320

ABSTRACT

This article examines the cultural context of early American personality psychology through a consideration of the early career of Gordon Allport. Between 1921 and 1937, Allport was among the leading figures in the movement to establish personality as a research category in American psychology. Far from being a strictly scientific concern, Allport's project was deeply embedded in the cultural politics of the age. Of particular importance was the gradual erosion of the language of character and the self-sacrificing, morally grounded self that it supported. Allport's "psychology of personality" helped fuel this trend while simultaneously attempting to resist it. His experience illustrates the elasticity and moral ambiguity of the newly emerging category of personality.


Subject(s)
Personality , Psychology/history , History, 19th Century , History, 20th Century , United States
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