eMedicine Specialties > Pediatrics: Cardiac Disease and Critical Care Medicine > Cardiology
Atrial Septal Defect, Ostium Secundum: Treatment & Medication
Updated: Nov 10, 2008
- Overview
- Differential Diagnoses & Workup
- Treatment & Medication
- Follow-up
Treatment
Medical Care
Small-to-moderatesized ostium secundum atrial septal defects diagnosed in the infant demonstrate significant likelihood of either spontaneous closure or reduction in size to the point that medical intervention no longer is indicated. Such patients should be followed until age 3-4 years before considering either device use or surgical closure.5,15
Surgical Care
- Minimally invasive cardiac surgery techniques allow closure without the use of blood or blood products in appropriately sized patients.16,17
- The skin incision is short because complete vertical division of the sternum is not necessary.
- If the defect is moderate in size and oval in shape, direct suture closure may be appropriate. Larger or rounder defects require patch closure. The patch can be fashioned from the patient's pericardium or made from Dacron.
- Results of surgery are excellent; a 100% closure rate should be achieved. Risk of mortality does not exceed that of general anesthesia.18,19
- Inpatient hospital stay now averages 2-3 days. Perform postoperative echocardiography to confirm closure.
- Postoperative care includes bacterial endocarditis precautions for 6 months if a patch was placed.
- Catheter intervention may be indicated.
- Transcatheter device closure of secundum atrial septal defect now represents a standard of care for this abnormality.20 Experience at centers throughout the world is extensive; the success rate has been high, and the risk of complications has been low.21,22,23 Indication for closure in the pediatric age range is a shunt of sufficient size to be clinically apparent. The reason for closure is to prevent development of complications (eg, atrial dysrhythmia, right heart dysfunction) that may appear in the adult. Small defects in children that are detectable only by echocardiography do not require closure.
- In adult patients who experience a suspected thrombotic stroke and who manifest a patent foramen ovale (15-20% of all adults demonstrate a patent foramen ovale on echocardiography), concern arises that the stroke may have been caused by a paradoxical embolus.24 In these patients, device closure of the communication is often recommended and accomplished. Studies remain controversial regarding the appropriateness of this treatment.
- Transcatheter device occlusion of a secundum atrial septal defect should be accomplished only by physicians properly trained and experienced in the procedure. Proper sizing of the defect and anatomic evaluation to assure reliable seating of the device is essential.
- The device is placed in the atrial septum via a catheter introduced into a femoral vein. Most operators advise monitoring the procedure with transesophageal echocardiography. Multiple studies indicate a high degree of success, with complete closure rates only slightly less than those obtained by surgery.
- Studies comparing device closure with surgery establish that hospital stay is shorter in patients undergoing device closure. Total costs of the 2 techniques do not significantly differ, apparently because of the cost of the device.25
- Complications of device occlusion include hemorrhage, vascular disruption, pain, nausea and vomiting, and arterial or venous obstruction from thrombosis or spasm. Other complications include rupture of blood vessel, tachyarrhythmias, bradyarrhythmias, and vascular occlusion. Embolization of the device during placement rarely occurs but can result in emergency surgery for removal. The most common complication is incomplete closure of the defect.26
Consultations
Patients should be evaluated by a pediatric cardiologist. Patients with defects considered appropriate for transcatheter device closure should be evaluated by an interventional pediatric cardiologist experienced in the procedure. If surgery is contemplated, the patient should be evaluated by a cardiovascular surgeon experienced in surgery of congenital heart defects. Ideally, decisions regarding therapy should result from simultaneous evaluation of patient data at a group meeting that includes all of these physicians.
Diet
No special diet is required.
Activity
No activity restrictions are required except for a few weeks following either device closure or heart surgery.
Medication
Drug therapy is not currently a component of the standard of care for this condition. No specific medications are indicated for patients with a secundum atrial septal defect. Bacterial endocarditis prophylaxis is required for the first 6 months following device closure or surgical closure with a patch (see Endocarditis, Bacterial for further information). Preoperatively, antibiotic prophylaxis is not required in an isolated ostium secundum atrial septal defect. For information regarding antibiotics used for endocarditis prophylaxis, see Antibiotic Prophylactic Regimens for Endocarditis.
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| Differential Diagnoses & Workup: Atrial Septal Defect, Ostium Secundum |
Treatment & Medication: Atrial Septal Defect, Ostium Secundum |
| Follow-up: Atrial Septal Defect, Ostium Secundum |
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References
Gessner IH. Atrial septal defect. In: Surgery of Congenital Heart Disease: Pediatric Care Consortium 1984-1995. Armonk, NY: Futura Publishing Co.; 1998:31-44.
Vick GW, Titus JL. Defects of the atrial septum, including the atrioventricular canal. In: Garson A, Bricker JT, Fisher, DJ, Neish, SR eds. The Science and Practice of Pediatric Cardiology. Vol 2. Baltimore, MD: Lippincott Williams & Wilkins; 1998.
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Vida VL, Barnoya J, O'Connell M, et al. Surgical versus percutaneous occlusion of ostium secundum atrial septal defects: results and cost-effective considerations in a low-income country. J Am Coll Cardiol. Jan 17 2006;47(2):326-31. [Medline].
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Further Reading
Keywords
ostium secundum atrial septal defect, ASD, fossa ovalis defect, secundum atrial septal defect, atrial dysrhythmia, right heart dysfunction, patent foramen ovale, chronic right atrial dilation, heart failure, atrial fibrillation, atrial flutter, atrial dysrhythmia, stroke, obstructive pulmonary vascular disease, failure to thrive, bacterial endocarditis, primary pulmonary hypertension, pulmonary valve stenosis, Holt-Oram syndrome
Treatment & Medication: Atrial Septal Defect, Ostium Secundum