Placental residual evaluation by ultrasound contrast

Evaluation of placental tissue remnants and pseudoaneurysms using ultrasound contrast

Status

Recruiting

Phases

Phase 1

Study type

Interventional

Source

JPRN

Registry ID

JPRN-jRCTs021240030

Enrollment

Registered

2024-10-07

Start date

2024-10-07

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

retained placenta

Interventions

Administering ultrasound contrast agents for unapproved uses

Contrast Media

Eligibility

Sex/Gender

Female

Inclusion criteria

Inclusion criteria: 20 puerperal women suspected of retained placenta on ultrasound

Exclusion criteria

Exclusion criteria: 1) If consent cannot be obtained 2) egg allergy 3) heart disease or lung disease

Design outcomes

Primary

Measure	Time frame
In cases where retained placenta is suspected by ultrasonography, we will examine whether (1) the correct diagnosis rate increases compared to normal ultrasound findings, and (2) whether differences in contrast density and contrast rate reflect the clinical course such as the amount of bleeding.	—

Secondary

Measure	Time frame
Evaluation of safety, including side effects, of ultrasound contrast agent administration to postpartum women	—

Contacts

Public ContactHiroshi Miura

Akita University Hospital

miurah@doc.med.akita-u.ac.jp+81-18-884-6163

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026