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Follow-up After Percutaneous Device Closure of Ventricular Septal Defects

15. juli 2026 oppdatert av: Noran Hasan Megally, Assiut University

Outcomes and Short-term Follow-up After Percutaneous Device Closure of Ventricular Septal Defects: A Study From Two Tertiary Pediatric Cardiac Care Centers in Upper Egypt

Ventricular septal defects (VSDs) are the most common congenital heart defects, accounting for 30-40% of congenital cardiac anomalies. They result from an abnormal opening in the interventricular septum, leading to left-to-right shunting. Clinical presentation depends on defect size and pulmonary vascular resistance, ranging from asymptomatic small defects to heart failure symptoms in infancy, with older children developing exercise intolerance or pulmonary hypertension.

Although surgical closure has long been the standard treatment, percutaneous transcatheter device closure has emerged as a less invasive alternative for selected VSD types, particularly muscular and suitable perimembranous defects. This approach offers comparable efficacy with reduced morbidity and shorter hospital stays.

This bicentric study aims to evaluate procedural success, complications, and short-term outcomes of percutaneous VSD closure in paediatric patients from Upper Egypt, providing essential data to guide clinical practice and quality improvement in tertiary cardiac centres.

Studieoversikt

Status

Har ikke rekruttert ennå

Forhold

Intervensjon / Behandling

Detaljert beskrivelse

Ventricular septal defects (VSDs) are the most common congenital heart defects, accounting for 30-40% of congenital cardiac anomalies. They result from an abnormal opening in the interventricular septum, leading to left-to-right shunting. Clinical presentation depends on defect size and pulmonary vascular resistance, ranging from asymptomatic small defects to heart failure symptoms in infancy, with older children developing exercise intolerance or pulmonary hypertension.

Diagnosis is primarily established by transthoracic echocardiography, which accurately defines defect anatomy, shunt severity, ventricular function, and pulmonary artery pressures. Management is individualized according to hemodynamic significance, with small asymptomatic defects managed conservatively and significant defects requiring intervention following initial medical therapy.

Although surgical closure has long been the standard treatment, percutaneous transcatheter device closure has emerged as a less invasive alternative for selected VSD types, particularly muscular and suitable perimembranous defects. This approach offers comparable efficacy with reduced morbidity and shorter hospital stays.

Recent studies report high procedural success rates (95-98%) using evolving device technologies, including Amplatzer™ and newer asymmetric occluders. However, outcome data from developing regions remain limited, highlighting the need for population-specific evidence.

This bicentric study aims to evaluate procedural success, complications, and short-term outcomes of percutaneous VSD closure in paediatric patients from Upper Egypt, providing essential data to guide clinical practice and quality improvement in tertiary cardiac centres.

Studietype

Observasjonsmessig

Registrering (Antatt)

85

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Barn
  • Voksen

Tar imot friske frivillige

Nei

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

Paediatric patients (age ≤18 years) undergoing percutaneous device closure of VSDs at the participating centres

Beskrivelse

Inclusion Criteria:

  1. Age: 6 months to 18 years
  2. Confirmed diagnosis of VSD (perimembranous, muscular) by transthoracic echocardiography (TTE)
  3. Hemodynamically significant VSD with: (Imtiaz et al., 2023)

    • Pulmonary blood flow (Qp) to Systemic blood flow (Qs) ≥1.5:1, OR
    • Evidence of left ventricular volume overload, OR
    • Pulmonary arterial hypertension (PAH) with reversible pulmonary vascular resistance
  4. Suitable anatomy for device closure as assessed by TTE and/or transesophageal echocardiography (TEE)
  5. Adequate rim (≥2mm) from VSD edges to cardiac valves and conduction system (for perimembranous VSDs)
  6. Written informed consent from parents/legal guardians
  7. Assent from children ≥ 12 years (as appropriate

Exclusion Criteria:

  1. Active endocarditis or systemic infection
  2. Fixed, irreversible pulmonary arterial hypertension (pulmonary vascular resistance >8 Wood units/m² or ratio of pulmonary vascular resistance (Rp) to systemic vascular resistance (Rs) >0.5)
  3. Multiple VSDs not amenable to device closure
  4. VSD associated with complex congenital heart disease requiring surgical intervention
  5. Contraindication to antiplatelet therapy
  6. Known allergy to device materials (nickel-titanium alloy)
  7. Patient or family unwilling to comply with follow-up protocol
  8. Life expectancy <1 year due to non-cardiac conditions
  9. Body weight <5 kg (relative contraindication, case-by-case assessment)

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Procedural success rate
Tidsramme: baseline
To evaluate the procedural success rate and immediate safety of percutaneous device closure of VSDs in paediatric patients.
baseline
Assess short-term complications
Tidsramme: baseline
To assess short-term complications, including residual shunts, rhythm disturbances (especially AV block), and device-related adverse events during follow-up up to 6 months
baseline
Predictors of success and complications
Tidsramme: baseline
To evaluate clinical, echocardiographic outcomes and compare predictors of success and complications between the two tertiary centres
baseline

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Antatt)

1. august 2026

Primær fullføring (Antatt)

1. oktober 2027

Studiet fullført (Antatt)

1. august 2028

Datoer for studieregistrering

Først innsendt

15. juli 2026

Først innsendt som oppfylte QC-kriteriene

15. juli 2026

Først lagt ut (Faktiske)

20. juli 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

20. juli 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

15. juli 2026

Sist bekreftet

1. juli 2026

Mer informasjon

Begreper knyttet til denne studien

Andre studie-ID-numre

  • Closure of VSD

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Ja

produkt produsert i og eksportert fra USA

Nei

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