The Sideris buttoned devices for transcatheter closure of patent ductus arteriosus

The Journey of an Indian Pediatric Cardiologist : Dr. K. C. Chaudhuri Lifetime Achievement Award/Oration at AIIMS, New Delhi, September 2017

The life journey of an Indian pediatric cardiologist, who bestowed considerable attention to the development of new knowledge and train/teach physicians around the world while providing care of patients with heart disease over a 45-y period, is reviewed. This appraisal focuses particular attention on the scientific contributions to the literature. These include spontaneous closure of physiologically advantageous ventricular septal defects, various issues related to a congenital heart defect namely, tricuspid atresia and transcatheter and, interventional pediatric cardiac procedures.

Comparative study between real time three dimensional echocardiogram and angiography in evaluation of patent ductus arteriosus, single center experience

In this study we compared the real time three dimensional echocardiogram data in evaluation of patent ductus arteriosus with the gold standard angiography.

METHODS

This study included 25 patients with PDA referred to Tanta University Hospital for elective cardiac catheterization. The patients comprised seven males and 18 females, with a mean age of 3.7 ± 0.36 years. The study duration was six months. All patients underwent full 2D echocardiogram as well as real time three-dimensional echocardiogram (RT3DE). Essential measurements included the pulmonary end of the duct, duct length, aortic end and aortic ampulla as well as the anatomical type of the PDA. Data obtained by RT3DE were compared against 2D echocardiogram and angiography.

RESULTS

There was no significant difference between 3D echocardiogram and angiography (P = 0.001) in the pulmonary end of the duct measurement. Neither were there any significant differences between the length of the duct or the aortic end measured by 3D echocardiogram and by angiography (P = 0.001 in both). While there was adequate agreement between both 2D and 3D echocardiogram and angiography in determining the anatomical type of the PDA, 3D echocardiogram determined type A and type E ductus more accurately than 2D echocardiogram. The feasibility of Q lab analysis of PDA was 96%, while the feasibility of gated color flow 3D acquisitions in determining anatomical types was 64%.

CONCLUSION

There was complete agreement on location, size, morphology and surrounding structure of PDA between 2D and 3D echocardiogram, and angiography. This result illustrates the need for the proper placement of the device in catheterization laboratories.

Transcatheter closure of patent ductus arteriosus

More than three decades have passed since the introduction of transcatheter devices for closure of patent ductus arteriosus, and many occluders have been made available since then. The ideal requirements of any procedure are a user-friendly technique, optimum success rate, no residual anomaly, minimal morbidity/mortality, and comparability or superiority to the existing conventional modality of treatment. With various advancements in device design, delivery and assisted systems, the tremendous procedural safety and effectiveness, along with low cost and widespread availability of these devices makes transcatheter closure of patent ductus arteriosus a preferred therapeutic modality in all age groups, with decreasing demographic trends of surgical management.

Pulmonary perfusion scans following transcatheter patent ductus arteriosus closure using the Amplatzer devices

INTRODUCTION

Obstruction to flow in the left pulmonary artery (LPA) is a well-known complication after transcatheter device closure of patent ductus arteriosus (PDA). This complication has been studied for different devices using lung perfusion radionuclide scintigraphy (LPRS), but not for Amplatzer devices. This study was performed to evaluate the effect of such devices on lung perfusion using LPRS.

METHODS

This is a retrospective study that looked at all patients who had PDA closure using different Amplatzer devices at our center between July 1999 and January 2007. All patients underwent LPRS within 24 hr of the procedure. We compared LPRS with other hemodynamic data obtained by cardiac catheterization and echocardiography. Results are presented as mean ± SD or median and ranges.

RESULTS

A total of 70 patients had PDA closure using an Amplatzer device; median age was 1.8 years (4 months to 75 years) and median weight was 12 kg (5-112 Kg). Nine patients had associated cardiac anomalies. Sixty eight patients had available LPRS. The mean percent of left lung perfusion (LLP) was 42.7% (± 6.7%). Excluding patients with pre-existing LPA stenosis, 17% had abnormally decreased LLP. On hemodynamic measurements, 62 patients had available direct pressure measurements following PDA closure. None had significant increase. No correlation was found with echocardiographic data.

CONCLUSION

PDA closure with Amplatzer family of devices is associated with a relatively significant risk of decreased perfusion to the left lung, mostly mild abnormalities. Comparison with catheterization and echocardiographic measurements showed lack of correlation with LPRS findings.

The results of transcatheter occlusion of patent ductus arteriosus: success rate and complications over 12 years in a single center

Background and Objectives

Percutaneous occlusion of patent ductus arteriosus (PDA) has become increasingly attractive with the evolution of devices and techniques. We reviewed results for percutaneous occlusion of PDA using various devices in a single center.

Subjects and Methods

A retrospective review was done for 118 consecutive procedures performed in 111 patients with PDA between January 1996 and December 2007.

Results

The median age of the patients was 4.5 years (0.9 to 60.3 years); body weight was 16.9 kg (6.8 to 74.7 kg). The median PDA diameter at the pulmonic end was 3.8 mm (0.7 to 10 mm); mean pulmonary artery pressure was 21.0 mmHg (7 to 60 mmHg). Complete occlusion occurred in 76/111 (68.4%) immediately after implantation and in 100/111 (90.0%) at one year of follow-up. Second procedures for residual shunts were done in 7 patients. After the year 2001, the complete closure rate was 95.2% compared to 71.4% before 2001. Complications associated with the procedure were left pulmonary artery narrowing (all <20 mmHg) in 14, arrhythmia in 2, and death in 1.

Conclusion

Evolution of devices, cumulative experience, and health insurance covering the cost of devices have contributed to good outcomes in our center for percutaneous occlusion of PDA. Our results have improved over the years, particularly with the use of the Amplatzer duct occluder.

Diagnosis and management of acyanotic heart disease: part II -- left-to-right shunt lesions

In this review, the clinical features and management of most commonly encountered acyanotic, left-to-right shunt lesions are discussed. Patients with small defects, especially in childhood, are usually asymptomatic while moderate to large defects in infancy may present with symptoms. Hyperdynamic precordium, widely split and fixed second heart sound, ejection systolic murmur at the left upper sternal border and a mid-diastolic flow rumble at the left lower sternal border are present in atrial septal defects, holosystolic murmur at the left lower border is characteristic for a ventricular septal defect whereas a continuous murmur at the left upper sternal border is distinctive for patent ductus arteriosus. Clinical diagnosis is not usually difficult and the diagnosis can be confirmed and quantitated by non-invasive echocardiographic studies. Whereas surgical intervention was used in the past, transcatheter methods are increasingly used for closure of atrial septal defect and patent ductus arteriosus. Small ventricular septal defects may not need to be closed whereas medium and large defects may require surgical closure. Transcatheter closure of both muscular and membranous ventricular septal defects is feasible by transcatheter methodology, but these techniques are experimental at the time of this writing.

Comparison of percutaneous closure of large patent ductus arteriosus by multiple coils versus the Amplatzer duct occluder device

This study compared the efficacy and costs of the most used approaches for percutaneous closure of large patent ductus arteriosus, that is, multiple coils and the Amplatzer duct occluder (ADO) device. From April 2000 to September 2003, 47 patients underwent closure of large, symptomatic patent ductus arteriosus (diameter 4.6 +/- 3.0 mm/m(2); QP/QS 2.1 +/- 1.9) with multiple Cook detachable coils (n = 19) or the ADO device (n = 28). The multiple coil approach was significantly cheaper (1,389 +/- 168 vs 3,811 +/- 38, p <0.0001) but as effective as the ADO device over a mid-term follow-up (occlusion rate 89.5% vs 96.4%, p = NS).

Interventional treatment of patent ductus arteriosus in 2004

In 2004, the interventional treatment of patent ductus arteriosus (PDA) is definitive and curative. In current practice, coils are used for smaller PDA, and devices are employed for larger PDA. Developing technologies offer small improvements in control and results, but do not appear to promise major changes in practice. This review summarizes the current and emerging interventional technologies directed at PDA closures.