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Published on: June 15, 2020
Transsplenic splenoportography and portal venous interventions in pediatric patients
Eric J Monroe1, Ethan J Speir2, C Matthew Hawkins2,3
1Department of Radiology, Division of Interventional Radiology, Seattle Children's Hospital and University of Washington, 4800 Sand Point Way NE, M/S R-5417, Seattle, WA, 98105, USA. eric.monroe@seattlechildrens.org.
Insights
Transsplenic portal venous access is safe and effective for pediatric diagnostic imaging and interventions when other methods fail. Minimizing access size reduces bleeding risks, making this approach valuable for complex cases.
Area of Science:
- Pediatric Interventional Radiology
- Hepatobiliary Surgery
- Vascular Access Techniques
Background:
- Limited data exists on transsplenic portal venous access in children.
- Concerns about bleeding risks have led to underutilization of this technique.
- Transsplenic access may be crucial for specific diagnostic and interventional procedures.
Purpose of the Study:
- To evaluate the safety and efficacy of transsplenic splenoportography in children.
- To assess the utility of transsplenic portal venous interventions in pediatric patients.
- To determine the factors influencing the success and complications of transsplenic access.
Main Methods:
- Retrospective review of pediatric patients undergoing percutaneous transsplenic portal venous access.
- Analysis of procedural indications, imaging, technical details, and clinical outcomes.
- Data collected from two tertiary pediatric institutions between 2012 and 2017.
Main Results:
- Transsplenic portal venous access was successful in all cases.
- Diagnostic splenoportography achieved 100% success in providing necessary information.
- Four complex portal interventions, including angioplasty and thrombectomy, were 100% successful.
- Intraperitoneal bleeding occurred in 7.7% of cases, with transfusion needed in 3.8%.
- No hemorrhage was observed with 4 Fr or smaller access tracts.
Conclusions:
- Transsplenic splenoportography is safe and effective for pediatric patients when noninvasive imaging is insufficient.
- The transsplenic approach offers advantages for complex portal venous interventions.
- Bleeding risk is associated with access tract size and can be managed with embolization.
Background:
Data regarding transsplenic portal venous access for diagnostic imaging and endovascular intervention in children are limited, possibly due to concerns regarding high bleeding risks and resultant underutilization.
Objective:
To investigate the safety and utility of transsplenic splenoportography and portal venous interventions in children.
Materials And Methods:
A retrospective review was performed of all pediatric patients undergoing percutaneous transsplenic portal venous access and intervention at two large tertiary pediatric institutions between January 2012 and April 2017 was performed. Parameters assessed included procedural indications, procedural and relevant prior imaging, technical details of the procedures, laboratory values and clinical follow-up.
Results:
Transsplenic portal venous access was achieved in all patients. Diagnostic transsplenic splenoportography was performed in 22 patients and was 100% successful at providing the desired anatomical and functional information. Four transsplenic portal venous interventions were performed with 100% success: meso-Rex shunt angioplasty, snare targeted transjugular intrahepatic portosystemic shunt (TIPS) creation through cavernous transformation, pharmacomechanical thrombectomy for acute thrombosis, and transplant portal vein angioplasty. Intraperitoneal bleeding occurred in 2/26 (7.7%) and one case required transfusion (3.8%). No cases of hemorrhage were observed when transsplenic access size was 4 Fr or smaller.
Conclusion:
Transsplenic splenoportography in children is safe and effective when noninvasive imaging methods have yielded incomplete information. Additionally, a transsplenic approach has advantages for complex portal interventions. Bleeding risks are proportional to tract access size and may be mitigated by tract embolization.
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