Internal Iliac Artery Occlusion in Placenta Accreta

NCT ID: NCT04423263

Last Updated: 2020-06-09

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

UNKNOWN

Clinical Phase

NA

Total Enrollment

24 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-07-01

Study Completion Date

2023-12-31

Brief Summary

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This is a randomized study to assess the efficacy of prophylactic bilateral internal iliac artery occlusion performed prior to planned surgical management for placenta accreta spectrum (PAS). The intervention group would receive balloon occlusion, ureteric stenting and caesaeran hysterectomy while the control group would undergo the same procedure, excluding balloon occlusion. The primary outcome is to demonstrate a three pint or greater reduction in pack cell transfusion requirement.

Detailed Description

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Interventional radiology, including internal iliac artery occlusion, has been used as an adjunct in the management of placenta accreta spectrum (PAS). Retrospective studies have shown benefit in terms of reduction of blood loss. However, studies reported in literature vary widely in terms of the exact surgical procedure undertaken, in conjunction with the radiological intervention. The radiological intervention itself lacks standardization, occurring at different anatomical levels, ranging from infrarenal aortic occlusion to internal iliac or uterine artery. Furthermore, there have been reported cases of arterial thrombosis associated with arterial occlusion.

We sought to clarify the effectiveness of a standardized approach , where perioperative bilateral internal iliac artery occlusion is performed followed by bilateral ureteric stenting and caesarean hysterectomy. The control group would undergo the exact procedure, excluding internal iliac artery occlusion. Patients would be randomized but neither the patient nor surgeon could be blinded.

The primary outcome would be to demonstrate a three pint or greater reduction in packed cell transfusion. Secondary outcomes include a difference in estimated blood loss, additional blood product transfusion, unplanned additional surgical procedure, serious complications arising from internal iliac artery occlusion, total procedural time and early neonatal outcome.

Conditions

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Placenta Accreta

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Intervention

Receives bilateral internal iliac artery occlusion

Group Type EXPERIMENTAL

Bilateral internal iliac artery balloon occlusion

Intervention Type PROCEDURE

Bilateral internal iliac artery balloon placement under fluoroscopic guidance preoperatively which will be occluded intraoperatively based on existing local protocol

Control

Does not receive bilateral internal iliac artery occlusion

Group Type ACTIVE_COMPARATOR

Control

Intervention Type PROCEDURE

Surgical approach similar to intervention arm, except bilateral internal iliac artery occlusion

Interventions

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Bilateral internal iliac artery balloon occlusion

Bilateral internal iliac artery balloon placement under fluoroscopic guidance preoperatively which will be occluded intraoperatively based on existing local protocol

Intervention Type PROCEDURE

Control

Surgical approach similar to intervention arm, except bilateral internal iliac artery occlusion

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* All pregnant women with prenatally diagnosed placenta accreta spectrum

Exclusion Criteria

* Women who declined to participate
* Women with bleeding diathesis or severe thrombocytopenia \<100k x 1,000,000/L
* Surgery performed prior to 28 weeks of gestation
Minimum Eligible Age

18 Years

Maximum Eligible Age

55 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

Yes

Sponsors

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Voon Hian Yan

OTHER

Sponsor Role lead

Responsible Party

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Voon Hian Yan

Consultant Maternal Fetal Medicine Specialist

Responsibility Role SPONSOR_INVESTIGATOR

Principal Investigators

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Hian Yan Voon, MRCOG

Role: PRINCIPAL_INVESTIGATOR

Sarawak General Hospital

Central Contacts

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Hian Yan Voon, MRCOG

Role: CONTACT

+6082 276666

References

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Chen M, Liu X, You Y, Wang X, Li T, Luo H, Qu H, Xu L. Internal Iliac Artery Balloon Occlusion for Placenta Previa and Suspected Placenta Accreta: A Randomized Controlled Trial. Obstet Gynecol. 2020 May;135(5):1112-1119. doi: 10.1097/AOG.0000000000003792.

Reference Type BACKGROUND
PMID: 32282608 (View on PubMed)

Salim R, Chulski A, Romano S, Garmi G, Rudin M, Shalev E. Precesarean Prophylactic Balloon Catheters for Suspected Placenta Accreta: A Randomized Controlled Trial. Obstet Gynecol. 2015 Nov;126(5):1022-1028. doi: 10.1097/AOG.0000000000001113.

Reference Type BACKGROUND
PMID: 26444128 (View on PubMed)

Other Identifiers

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Research ID 55302

Identifier Type: -

Identifier Source: org_study_id

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