Open AccessCriteria for placenta accreta spectrum in the International Federation of Gynaecology and Obstetrics classification, and topographic invasion area are associated with massive hemorrhage in patients with placenta previa
Author(s) -
Ishibashi Hiroki,
Miyamoto Morikazu,
Iwahashi Hideki,
Matsuura Hiroko,
Kakimoto Soichiro,
Sakamoto Takahiro,
Hada Taira,
Takano Masashi
Publication year - 2021
Publication title -
acta obstetricia et gynecologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.401
H-Index - 102
eISSN - 1600-0412
pISSN - 0001-6349
DOI - 10.1111/aogs.14143
Subject(s) - medicine , placenta previa , placenta accreta , obstetrics , hysterectomy , gynecology , group b , obstetrics and gynaecology , placenta , blood transfusion , placenta diseases , uterine artery embolization , pregnancy , surgery , fetus , genetics , biology
Abstract Introduction Placenta previa with placenta accreta spectrum (PAS) is a life‐threatening disease that results in massive hemorrhage. The clinical and histologic criteria of PAS were adopted according to the International Federation of Gynaecology and Obstetrics (FIGO) classification. We aimed to investigate whether FIGO criteria and topography were associated with maternal complications in patients with placenta previa. Material and methods Patients with placenta previa who underwent cesarean section at our institution between January 2003 and December 2019 were identified. First, they were divided based on FIGO classification, as follows: Group A, with clinical criteria; Group B, with histologic criteria; and Group C: without clinical or histologic criteria. Next, cases with PAS were classified according to the topographic invasion area, as follows: type 1, upper posterior bladder; type 2, lower posterior bladder; type 3, parametrium; type 4, posterior lower uterine segment. Predictive factors for massive hemorrhage were retrospectively analyzed. Results Among the 350 patients, 24 (6.9%) were classified as Group A, 16 (4.6%) as Group B and 310 (88.5%) as Group C. Regarding maternal history and hemostatic procedures, there were no significant factors other than hysterectomy ( p < .01) in Groups A and B. The volume of blood loss in both Groups A and B was greater than in Group C ( p < .01). The rates of uterine artery embolization and blood transfusion were higher in Groups A and B than in Group C ( p < .01). In addition, there were no significant factors other than hysterectomy between Groups A and B. In the multivariate analysis for massive hemorrhage, Group A (odds ratio: 2.73, p = .04) and Group B (odds ratio: 12.69, p < .01) were identified as independent predictive factors. In addition, massive hemorrhage was closely related to the lower posterior bladder and parametrial invasion in both Groups A and B. Conclusions Both clinical and histologic criteria for PAS in the FIGO classification were associated with massive hemorrhage. Diagnosing clinical PAS using the FIGO classification, additional hemostatic procedures might be necessary according to the topographic invasion area.