Literature search
Literature search on application of HIFU in management of PAS was
conducted. Scopus, Cochrane, PubMed and Web of Science databases were
searched for relevant articles using the following terms: [“focused
ultrasound” OR “ultrasound ablation”] AND [“placenta accreta”
OR “placenta percreta” OR “Placenta increta”], from the date of
database inception to January, 31st 2020. References
from eligible articles were screened for other related articles. For
purpose of comparison to other uterus-conserving techniques, studies
were retrieved from CON-PAS registry, an online open access registry of
studies on conservative management of PAS in the last 20 years, which is
provided by Middle-East Obstetrics and Gynecology Graduate Education
(MOGGE) Foundation (17). The registry was last updated in April 2020.