Background Of Placenta Accreta Spectrum

Dr. Fahri Burçin Fıratlıgil1
Assoc. Prof. Dr. Zehra Vural Yılmaz2

1Department of Perinatology, Ankara Etlik City Hospital, Ankara, Türkiye
2Department of Perinatology, Ankara Etlik City Hospital, Ankara, Türkiye

ABSTRACT

In 1937, Irving and Hertig first defined the term placenta accreta spectrum (PAS), which they stated as the invasion of trophoblasts into the muscular layer of the uterus and the absence of decidua in the histological evaluation of the placenta after birth. The most well-known risk factor that may cause the development of PAS is a history of previous cesarean section, and this risk increases as the number of cesarean sections increases. Today, as cesarean births are increasing, the incidence of PAS is also increasing worldwide. PAS is directly associated with increased maternal morbidity and mortality as it can cause severe and life-threatening bleed- ing. Therefore, early diagnosis and evaluation of PAS and directing these patients to appropriate centers for delivery before labor begins is critical.

Keywords: Placenta accreta spectrum; Diagnosis; Prevalence; Risk factors; Nitabuch

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