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Fulltext The new Occlutech® PDA occluder: Initial human experience

Abdelbasit MA, Alwi M, Kandavello G, Che Mood M, Samion H, Hijazi ZM

Catheter Cardiovasc Interv, 2015 Jul;86(1):94-9.
PMID: 25675888 DOI: 10.1002/ccd.25878

OBJECTIVES: To evaluate the feasibility, safety, and efficacy of the Occlutech® PDA occluder for closure of patent ductus arteriosus (PDA).
BACKGROUND: The Occlutech® PDA occluder is novel, self-shaping Nitinol wire device with PET (polyethylene terephthalate) patches integrated into the shank of the device to assure a better obturation of the ductus. The Occlutech® PDA occluder has undergone two design modifications.
METHODS: A prospective, non-randomized pilot study was started in November 2011. Thirty-three patients were included until April 2013. Patients weighing <6 kg or those with associated cardiac anomalies that required surgery were excluded. All patients were followed up by transthoracic echocardiography at 24 hr, 30 days, 90 days, 180 days, and 360 days after implantation. Residual shunt, left pulmonary artery (LPA) and descending aortic velocities were among the parameters assessed. All occluders were delivered via 6-8 F long sheaths and PDA closures were performed following standard techniques.
RESULTS: Thirty three patients (20 female/13 male), with a median age of 2 years (6 month to 38 years), and median weight of 9.3 kg (6-69.2 kg) were included. The narrowest median PDA diameter was 3mm (1.8-5.8 mm). All the 33 patients were closed successfully using Occlutech ductal occluder, 16 patients (48.4%) had immediate and complete closure on angiography. Within 24 hr, color Doppler revealed complete closure in 27patients (81.8%), 32patients (97%) at 30 days, and in 100% of patients at 90 days. All patients with a large PDA had immediate residual shunt which was closed at the 90-day follow-up. There was no device embolization, hemolysis, or obstruction to the LPA or descending aorta.
CONCLUSION: The new Occlutech® PDA is safe and effective. In patients with a large PDA complete closure tended to take longer time.

Matched MeSH terms: Ductus Arteriosus, Patent/diagnosis; Ductus Arteriosus, Patent/surgery*
Fulltext Advanced paternal age effect on trisomy X syndrome

Ahzad Hadi Ahmad, Rabiatul Basria S.M.N. Mydin, Nur Ain Nisrina Roan, Abdul Rahman Azhari, Narazah Mohd Yusoff

Malaysian Journal of Medicine and Health Sciences, 2018;14(201):213-215.
MyJurnal

Advanced parental age is a risk factor for chromosomal abnormalities in their offspring. Trisomy X or Triple X syn- drome has previously been reported with advanced maternal age. Here we report two (2) cases of Trisomy X with paternal age as risk factor. Generally, Trisomy X individuals show variable physical and psychological manifesta- tions. However, both cases reported here have advanced paternal age as a risk factor; 55 years old (46 years old at conception) for Case 1 with patient having right eye squint, beaked nose, Posterior Misalignment Type Ventricular Septal Defect (PMVSD) and small Patent Ductus Arteriosus (PDA) with failure to thrive and 49 years old (45 years old at conception) for Case 2 with speech delay and protruding tongue. In view of that, advanced paternal age could possibly contribute the accumulation of de novo mutations in germ line mosaicism.

Matched MeSH terms: Ductus Arteriosus, Patent
Stenting the patent ductus arteriosus in duct-dependent pulmonary circulation: techniques, complications and follow-up issues

Alwi M

Future Cardiol, 2012 Mar;8(2):237-50.
PMID: 22413983 DOI: 10.2217/fca.12.4

Maintaining ductal patency in duct-dependent congenital heart lesions by implantation of coronary stents is an alternative to systemic pulmonary shunt in selected cases and lesions with suitable anatomy. This article focuses on the procedure as the initial palliation in duct-dependent pulmonary circulation, its associated pitfalls and complications. A good understanding of the diverse duct morphology is paramount prior to stenting of the ductus. Long tortuous duct, insufficiently constricted ductus at the pulmonary end and ductus with associated branch pulmonary artery stenosis at the site of insertion are not suitable for stenting. Durability of palliation is generally inferior to a surgical shunt and this may dictate earlier definitive surgical repair. Acceleration of branch pulmonary artery stenosis in certain ductal morphology limits its general applicability. Bioabsorbable and biodegradable stents may offer some solution to this problem.

Matched MeSH terms: Ductus Arteriosus, Patent/radiography; Ductus Arteriosus, Patent/surgery; Ductus Arteriosus, Patent/therapy*
Fulltext Stenting the ductus arteriosus: Case selection, technique and possible complications

Alwi M

Ann Pediatr Cardiol, 2008 Jan;1(1):38-45.
PMID: 20300236 DOI: 10.4103/0974-2069.41054

Ductal stenting is an attractive alternative to conventional shunt surgery in duct dependent congenital heart disease as it avoids thoracotomy and its related problems. With today's generation of coronary stents which have better profile, flexibility and trackability, ductal stenting may be achieved safely and with considerably less difficulty than previously described.As in Blalock-Taussig (BT) shunt, ductal stenting is indicated mainly in duct-dependent cyanotic lesions chiefly in the neonatal period. Unlike the Patent ductus arteriosus (PDA) as an isolated lesion, the ductus in cyanotic heart disease has a remarkable morphologic variability. The ductus tends to arise more proximally under the aortic arch, giving rise to a vertical ductus or occasionally it may arise from the subclavian artery. It also tends to be long and sometimes very tortuous, rendering stent implantation technically impossible. The ductus in these patients may also insert onto one of the branch pulmonary arteries with some stenosis at the site of insertion. The ductus in Tetralogy of Fallot with pulmonary atresia (TOF-PA) tend to exhibit these morphologic features and to a lesser degree in transposition of great arteries with ventricular septal defect and pulmonary atresia (TGA-VSD-PA) and the more complex forms of univentricular hearts. In the preliminary angiographic evaluation, it is important to delineate these morphologic features as the basis for case selection.Ductal stenting may be done by the retrograde femoral artery route or the antegrade transvenous route depending on the ductus morphology and the underlying cardiac lesion. The detailed techniques and essential hardware are described. Finally, major potential complications of the procedure are described. Acute stent thrombosis is the most serious and potentially catastrophic. Emergent treatment with thrombolytic therapy and mechanical disruption of thrombus are required. With proper case selection, appropriate technique and the right hardware ductal stenting provides reasonable short-medium term palliation in duct-dependent cyanotic heart disease.

Matched MeSH terms: Ductus Arteriosus, Patent
Stenting of Lesions in Patent Ductus Arteriosus with Duct-Dependent Pulmonary Blood Flow: Focus on Case Selection, Techniques and Outcome

Alwi M, Mood MC

Interv Cardiol Clin, 2013 Jan;2(1):93-113.
PMID: 28581990 DOI: 10.1016/j.iccl.2012.09.011

Stenting of patent ductus arteriosus (PDA) is an attractive alternative to the surgical aortopulmonary shunt in the palliation of cyanotic congenital heart disease. However, the diverse morphology of PDA in this setting limits its role, as stenting an overly tortuous duct may not be feasible, and in a significant number of patients, ductus-related pulmonary artery stenosis contraindicates this procedure. The major acute complications are stent migration, thrombosis, and cardiac failure. Early failure of palliation caused by in-stent stenosis is another limitation of this procedure.

Study site: Institut Jantung Negara (IJN), Kuala Lumpur, Malaysia

Matched MeSH terms: Ductus Arteriosus, Patent
Fulltext Concomitant stenting of the patent ductus arteriosus and radiofrequency valvotomy in pulmonary atresia with intact ventricular septum and intermediate right ventricle: early in-hospital and medium-term outcomes

Alwi M, Choo KK, Radzi NA, Samion H, Pau KK, Hew CC

J. Thorac. Cardiovasc. Surg., 2011 Jun;141(6):1355-61.
PMID: 21227471 DOI: 10.1016/j.jtcvs.2010.08.085

Objectives: Our objective was to determine the feasibility and early to medium-term outcome of stenting the patent ductus arteriosus at the time of radiofrequency valvotomy in the subgroup of patients with pulmonary atresia with intact ventricular septum and intermediate right ventricle.
Background: Stenting of the patent ductus arteriosus and radiofrequency valvotomy have been proposed as the initial intervention for patients with intermediate right ventricle inasmuch as the sustainability for biventricular circulation or 1½-ventricle repair is unclear in the early period.
Methods: Between January 2001 and April 2009, of 143 patients with pulmonary atresia and intact ventricular septum, 37 who had bipartite right ventricle underwent radiofrequency valvotomy and stenting of the patent ductus arteriosus as the initial procedure. The mean tricuspid valve z-score was -3.8 ± 2.2 and the mean tricuspid valve/mitral valve ratio was 0.62 ± 0.16.
Results: Median age was 10 days (3-65 days) and median weight 3.1 kg (2.4-4.9 kg). There was no procedural mortality. Acute stent thrombosis developed in 1 patient and necessitated emergency systemic-pulmonary shunt. There were 2 early in-hospital deaths owing to low cardiac output syndrome. One late death occurred owing to right ventricular failure after the operation. Survival after the initial procedure was 94% at 6 months and 91% at 5 years. At a median follow-up of 4 years (6 months to 8 years), 17 (48%) attained biventricular circulation with or without other interventions and 9 (26%) achieved 1½-ventricle repair. The freedom from reintervention was 80%, 68%, 58%, and 40% at 1, 2, 3, and 4 years, respectively.
Conclusions: Concomitant stenting of the patent ductus arteriosus at the time of radiofrequency valvotomy in patients with pulmonary atresia with intact ventricular septum and intermediate right ventricle is feasible and safe with encouraging medium-term outcome.

Matched MeSH terms: Ductus Arteriosus, Patent/complications; Ductus Arteriosus, Patent/mortality; Ductus Arteriosus, Patent/physiopathology; Ductus Arteriosus, Patent/therapy*; Ductus Arteriosus, Patent/ultrasonography
Transcatheter occlusion of native persistent ductus arteriosus using conventional Gianturco coils

Alwi M, Kang LM, Samion H, Latiff HA, Kandavel G, Zambahari R

Am J Cardiol, 1997 May 15;79(10):1430-2.
PMID: 9165178 DOI: 10.1016/s0002-9149(97)00160-4

Two hundred eleven patients with small- to moderate-sized native patent ductus arteriosus underwent closure using Gianturco coils, employing the transvenous multiple catheter approach. Short-term results showed a high rate of complete occlusion and a potential long-term complication of mild left pulmonary artery stenosis in a small number of patients.

Matched MeSH terms: Ductus Arteriosus, Patent/therapy*
Fulltext Initial results and medium-term follow-up of stent implantation of patent ductus arteriosus in duct-dependent pulmonary circulation

Alwi M, Choo KK, Latiff HA, Kandavello G, Samion H, Mulyadi MD

J Am Coll Cardiol, 2004 Jul 21;44(2):438-45.
PMID: 15261945 DOI: 10.1016/j.jacc.2004.03.066

Objectives: This study was designed to assess the safety, efficacy, medium-term outcome, and complications of patent ductus arteriosus (PDA) stenting in duct-dependent pulmonary circulation.
Background: Patent ductus arteriosus stenting has been proposed as an alternative to surgical shunt on account of postoperative morbidity and complications of surgical shunting.
Methods: Between April 2000 and February 2003, 69 patients with duct-dependent pulmonary circulation underwent cardiac catheterization with the intent of PDA stenting as first palliative procedure. Patients with critical pulmonary stenosis and pulmonary atresia with intact ventricular septum post-radiofrequency valvotomy who had PDA stenting were excluded. Thirteen more patients were excluded because of branch pulmonary artery (PA) stenosis. The follow-up was by clinical examination, echocardiography, and repeat cardiac catheterization at six to nine months following the procedure.
Results: Patent ductus arteriosus stenting was successful in 51 patients (91.1%) and failed in 5 patients (8.9%). The mean narrowest PDA diameter was 1.9 +/- 0.6 mm. The mean procedure and fluoroscopy time were 95.7 min and 29.4 min, respectively. In one patient the stent dislodged and migrated to the left femoral artery and another patient developed transient intravascular hemolysis. There was no procedure-related mortality. Three patients (5.9%) died one day to two months after the procedure. At follow-up (3.2 months to 2.4 years), 8 patients developed significant stent stenosis requiring reintervention. Seven patients developed worsening of preexisting branch PA stenosis. The freedom from reintervention was 89% and 55% at 6 months and 1 year, respectively.
Conclusions: Patent ductus arteriosus stenting is an attractive alternative to surgical shunt in a majority of patients with duct-dependent circulation. An absolute contraindication to this technique is the presence of branch pulmonary stenosis.

Matched MeSH terms: Ductus Arteriosus, Patent/physiopathology; Ductus Arteriosus, Patent/radiography; Ductus Arteriosus, Patent/therapy*
Fulltext Transcatheter Closure of Patent Ductus Arteriosus: The Penang Hospital's Experience

Amir Hamzah AR, Tiow CA, Koh GT, Sharifah AM

Med J Malaysia, 2011 Mar;66(1):19-21.
PMID: 23765137

Transcatheter closure of small and moderate sizes of Patent Ductus Arteriosus (PDA) is a standard and well accepted form of treatment. The aim of this study is to describe the experience of transcatheter closure of PDA in Penang Hospital. All patients who underwent transcatheter closure of PDA at our institution between 20th January 2006 and 27th June 2008 were retrospectively identified and studied. There were a total of 66 patients who had undergone transcatheter closure of PDA during this period which comprised of 24 male and 42 female. The PDA was closed by Amplatzer Duct Occluder (ADO) in 31 patients, Gianturco coil in 29 patients and other types of devices in 6 patients. There were 4 patients (6%) who had developed acute complication during the procedure (3 of them developed coil embolization and 1 had bleeding from puncture site). The PDA was successfully close in 95.5% of the study population without any residual PDA shunting. All the patients were alive but 5 of them (4.5%) have some abnormalities (2 has mild left pulmonary stenosis, 3 has small residual). Comparison between ADO and Gianturco coil revealed no significant difference in the outcome. Transcatheter closure of PDA has proven to be safe and effective with good midterm outcome. There was no significant difference between Amplatzer Ductal Occluder and Gianturco coil in term of the outcome.

Matched MeSH terms: Ductus Arteriosus, Patent*
Fulltext Bilateral microtia, canal atresia and aplasia of cochleovestibular nerve

Asma A, Roslenda AR, Fadzilah I, Mazita A, Marina MB, Ab Aziz A

Med J Malaysia, 2017 04;72(2):135-137.
PMID: 28473682 MyJurnal

A six-month-old baby with congenital patent ductus arteriosus (PDA), bilateral microtia and canal atresia was referred for hearing assessment. The audiology assessment revealed bilateral profound hearing loss, which is atypical for a case of pure canal atresia. Imaging was performed much earlier than usual and, as suspected, the patient also had bilateral severe inner ear anomaly. It is extremely rare for a person to have both external and inner ear anomaly because of the different embryological origin. The only suitable hearing rehabilitation option for this kind of patients is brainstem implant. However, the parents had opted for sign language as a form of communication.

Matched MeSH terms: Ductus Arteriosus, Patent/complications
Fulltext The Amplatzer duct occluder: experience in 209 patients

Bilkis AA, Alwi M, Hasri S, Haifa AL, Geetha K, Rehman MA, et al.

J Am Coll Cardiol, 2001 Jan;37(1):258-61.
PMID: 11153748 DOI: 10.1016/s0735-1097(00)01094-9

Objectives: The aim of the study was to assess the safety and efficacy of the Amplatzer ductal occluder (ADO) in transcatheter occlusion of patent ductus arteriosus (PDA).
Background: Transcatheter closure of small to moderate sized PDAs is an established procedure. The ADO is a self-expandable device with a number of salutary features, notably its retrievability, ease of delivery via small 5F to 7F catheters and a range of sizes suitable even for the larger PDAs.
Methods: Between November 1997 and August 1999, the ADO was successfully implanted in 205 of 209 patients with PDA. The inclusion criteria for this device occlusion method were patients with clinical and echocardiographic features of moderate to large PDA, weighing > or =3.5 kg as well as asymptomatic adolescents and adults with PDA measuring > or =5.0 mm on two-dimensional (2D) echocardiogram. Occlusion was achieved via the antegrade venous approach. Follow-up evaluations were performed with 2D echocardiogram, color-flow mapping and Doppler measurement of the descending aorta and left pulmonary artery velocity at 24 h and 1, 3, 6 and 12 months after implantation.
Results: Two hundred and five patients had successful PDA occlusion using this device. The patients were between two months and 50 years (median 1.9) and weighed between 3.4 kg and 63.2 (median 8.4). Infants made up 26% of the total patients. The PDA measured from 1.8 to 12.5 mm (mean 4.9) at the narrowest diameter. Forty-four percent of patients achieved immediate complete occlusion. On color Doppler the closure rates at 24 h and 1 month after implant were 66% and 97%, respectively. At 6 and 12 months all except one patient attained complete occlusion. Device embolization occurred in three patients; in two this was spontaneous, and in the other it was due to catheter manipulation during postimplant hemodynamic measurement. Mild aortic narrowing was seen in an infant.
Conclusions: Patent ductus arteriosus occlusion using ADO is safe and efficacious. It is particularly useful in symptomatic infants and small children with relatively large PDA. Embolization can be minimized by selection of appropriate sized devices, and caution should be exercised in infants <5 kg.

Matched MeSH terms: Ductus Arteriosus, Patent/radiography; Ductus Arteriosus, Patent/therapy*
Fulltext Predictors of failed closure of patent ductus arteriosus with indomethacin

Boo NY, Mohd-Amin I, Bilkis AA, Yong-Junina F

Singapore Med J, 2006 Sep;47(9):763-8.
PMID: 16924357

Introduction: The aim of this study was to determine predictors of failed closure of patent ductus arteriosus (PDA) following a single course of indomethacin in symptomatic preterm infants.
Methods: This prospective observational study was carried out on 60 preterm infants weighing less than 1,750 g with symptomatic PDA confirmed by echocardiography. At a median age of 7.0 days (interquartile range 4.0), they were given indomethacin of 0.1 mg/kg/day intravenously daily for six days. Closure of PDA was reassessed by echocardiography upon completion of therapy.
Results: The PDA of 40 percent (n=24) of these infants remained patent. Forward logistic regression analysis showed that the only significant predictors of failed PDA closure in these infants were: PDA size (adjusted odds-ratio [OR] is 7.0; 95 percent confidence interval [CI] of OR is 2.0, 24.8; p-value is 0.002), birth weight (adjusted OR is 0.996; 95 percent CI of OR is 0.993, 1.000; p-value is 0.03) and platelet count (adjusted OR is 0.987; 95 percent CI is 0.975, 1.000; p-value is 0.045). Gestational age, maternal age and left atrium/aorta ratios were not significant predictors.
Conclusion: Larger PDA, lower birth weight and lower platelet count were significant predictors of high failure in indomethacin therapy given late at one week of life.

Matched MeSH terms: Ductus Arteriosus, Patent/drug therapy*; Ductus Arteriosus, Patent/ultrasonography
Retinopathy of prematurity in very low birth weight infants

Chye JK, Lim CT, Leong HL, Wong PK

Ann Acad Med Singap, 1999 Mar;28(2):193-8.
PMID: 10497665

This study aims to determine the prevalence of and risk factors associated with retinopathy of prematurity (ROP) in very low birth weight (VLBW) infants. All premature VLBW infants, admitted into the neonatal intensive care unit of the University Hospital Kuala Lumpur, were screened from 4 weeks of life. Perinatal and neonatal data were retrieved from the infants' medical notes. Between August 1994 and July 1996, 100 infants had their eyes examined serially. Of the 15 (15%) infants with ROP, all were less than 31 weeks gestation, and only 1 infant had birth weight above 1250 g. Five (5%) infants had severe ROP; 4 infants underwent cryotherapy for stage 3 threshold disease. Infants with ROP, as compared to infants without ROP, had lower birth weight [mean (SEM) 993 (50) g versus 1205 (22) g, P < 0.001], lower gestational age [mean (SEM) 28.0 (0.4) weeks versus 30.1 (0.2) weeks, P < 0.001], higher rates of patent ductus arteriosus and chronic lung disease, greater number of radiographic examinations and episodes of late-onset suspected/confirmed sepsis, and required longer duration of supplemental oxygen, ventilation, xanthine, antibiotics and intralipid use, but were slower to establish full enteral feeds. On multivariate logistic regression analysis, birth weight < or = 1000 g [OR 2.38, 95% CI 1.25, 4.55, P = 0.009] and gestational age < or = 28 weeks [OR 2.86, 95% CI 1.47, 5.56, P = 0.002] were significant predictors of increased risk of this disease. In conclusion, ROP is strongly associated with smaller, more immature and sicker neonates. Prevention of prematurity would help reduce the incidence of this disease.

Matched MeSH terms: Ductus Arteriosus, Patent/epidemiology
Fulltext Stent migration after right ventricular outflow tract stenting in the severe cyanotic Tetralogy of Fallot case

Hayashi T, Akhtar S, Alwi M

Ann Pediatr Cardiol, 2017 6 2;10(2):206-208.
PMID: 28566833 DOI: 10.4103/0974-2069.205143

We report our experience with a stent migration after right ventricle outflow tract stenting and converted to patent ductus arteriosus stenting in Tetralogy of Fallot (TOF) with severe infundibular stenosis. Finally, the patient achieved to TOF repair, and the migrated stent was removed without any complication.

Matched MeSH terms: Ductus Arteriosus, Patent
Surgical management of patent ductus arteriosus with endocarditis

Kareem BA, Kamarulzaman H, Koh GT

Ann Thorac Surg, 2010 Nov;90(5):1703-5.
PMID: 20971300 DOI: 10.1016/j.athoracsur.2010.04.105

A 9-year-old boy with patent ductus arteriosus complicated by infective endocarditis had not responded to antibiotic therapy and was referred to our institution. He had persistent fever and a chest roentgenogram demonstrated the presence of left lung pneumonic consolidation. An echocardiogram showed the presence of large vegetation in the pulmonary artery at the ductal opening. We successfully performed an open ductal ligation with the aid of cardiopulmonary bypass through a sternotomy and proceeded to resect the vegetation. We completed the procedure with reconstruction of the pulmonary artery. The postoperative course was uneventful. The patient was discharged after a week.

Matched MeSH terms: Ductus Arteriosus, Patent/surgery*
Fulltext Transcatheter closure of patent ductus arteriosus and interruption of inferior vena cava with azygous continuation using an Amplatzer duct occluder II

Koh GT, Ai Mokthar S, Hamzah A, Kaur J

Ann Pediatr Cardiol, 2009 Jul;2(2):159-61.
PMID: 20808631 DOI: 10.4103/0974-2069.58320

We report a case of transcatheter closure of patent ductus arteriosus using the new Amplatzer duct occluder II in an adult patient with interrupted inferior vena cava with azygous continuation via the femoral artery approach.

Matched MeSH terms: Ductus Arteriosus, Patent
Fulltext Persistent ductus arteriosus in Malaysian patients

Krishnan M, Snelling MR

Br Heart J, 1971 Sep;33(5):699-701.
PMID: 5115012 DOI: 10.1136/hrt.33.5.699
Matched MeSH terms: Ductus Arteriosus, Patent/diagnosis; Ductus Arteriosus, Patent/radiography; Ductus Arteriosus, Patent/surgery*
Nutritional therapies in the neonatal intensive care unit and post-natal growth outcomes of preterm very low birthweight Asian infants

Lee LY, Lee J, Niduvaje K, Seah SS, Atmawidjaja RW, Cheah FC

J Paediatr Child Health, 2020 Mar;56(3):400-407.
PMID: 31618507 DOI: 10.1111/jpc.14634

AIM: A collaborative study was conducted between two Southeast Asian university hospitals to compare the nutritional intervention and growth outcomes and evaluate the extent of post-natal growth faltering (PNGF) among very low birthweight (VLBW) infants.
METHODS: Data of all infants admitted during the 2011-2012 period to the two hospitals at Singapore (SG) and Malaysia (MY) were pooled and analysed.
RESULTS: Of the 236 infants, SG infants received lower total protein and energy intake than MY infants (2.69 vs. 3.54 g/kg/day and 92.4 vs. 128.9 kcal/kg/day respectively; P -2 SDS (55 vs. 16%; P = 0.001). The greater use of a diuretic in SG to treat haemodynamically significant patent ductus arteriosus (hsPDA) may have contributed to the higher PNGF rate. Mean growth velocity of at least 15 g/kg/day was attained by VLBW infants only from Day 14 and by ELBW infants only from Day 28 post-natally. Overall, severe PNGF rates (z-score change >-2 SDS at 36 weeks' corrected age) were 28.8 and 36.5% for VLBW and ELBW infants, respectively.
CONCLUSIONS: Being very preterm, ELBW with hsPDA and receiving insufficient protein and energy were risk factors for severe PNGF. Increasing protein and energy content, augmenting fortification of breast milk and concentrating feed volumes, especially if there is an hsPDA, may curb severe PNGF among these infants.

Matched MeSH terms: Ductus Arteriosus, Patent*
Closure of the patent ductus arteriosus with a Ligaclip through a minithoracotomy

Majid AA

Chest, 1993 May;103(5):1512-4.
PMID: 8486035 DOI: 10.1378/chest.103.5.1512

This article describes a technique which allows the patent ductus arteriosus (PDA) to be closed through a minithoracotomy. It combines a simple method of inducing atelectasis with Ligaclip closure of the PDA through a subaxillary incision. It was used successfully in 11 children and adolescents.

Matched MeSH terms: Ductus Arteriosus, Patent/surgery*
Fulltext Congenital absence of pericardium in babies with patent ductus arteriosus

Omar AI, Anas R

Med J Malaysia, 2013 Jun;68(3):259-61.
PMID: 23749018 MyJurnal

We report a case of two babies with absence of pericardium and patent ductus arteriosus (PDA). The absence of pericardium was found coincidentally during PDA ligation. The PDA was successfully ligated but the pericardium was not reconstructed. Postoperatively, the agenesis of the pericardium did not interfere with cardiac function.

Matched MeSH terms: Ductus Arteriosus, Patent*

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