4 research outputs found
Effects of Placenta Location in Pregnancy Outcomes of Placenta Accreta Spectrum (PAS): A Retrospective Cohort Study
Objective: Placenta Accreta Spectrum (PAS) affects approximately one in a thousand deliveries. Very few
studies evaluated PAS risk factors based on their location. In this study, we have investigated the effects
of placenta location on placental adhesion-related complications, its risk factors, and outcomes.
Materials and methods: We performed a retrospective cohort study of pathology-confirmed cases of PAS
from patients with peripartum hysterectomy, at a large educational hospital in Qazvin, Iran, from 2009 to
2019. Placenta location was found by ultrasound reports and intraoperative evaluation. We measured
demographic features, basic characteristics, maternal and neonatal outcomes based on placental
location including anterior, posterior, and lateral in Placenta Accreta Spectrum. Chi-square, t-test, and
one-way ANOVA were used to examine the relation of complications, risk factors, and outcomes in PAS.
Results: A review of 70 cases showed the distribution of placenta location as follows: 57% anterior, 27%
posterior, and 16% lateral. The mean gestational age at delivery was 35 (33-39) weeks. In 78.6% (n=55)
of the patients, an association with placenta previa and in 94/2% (n=66) of cases a history of cesarean
section was found, however, it was not significantly correlated with placenta location (p=0.082). We found
that surgery duration was significantly longer in patients with lateral PAS (155±38, vs 129.35±33.8 and
133.15±31.5 for anterior and posterior placenta respectively, p=0.09). Patients with lateral PAS also bled
more than the remaining two groups (2836 ml for lateral PAS vs 2002 and 1847 for anterior and posterior
placenta respectively, p=0.022). Moreover, women with a history of uterine surgery were more likely to
have posterior PAS compared to those with anterior and lateral PAS (p=0.035).
Conclusion: Differences in complications, risk factors, and outcomes of PAS based on placenta location
may lead to improved diagnosis and decreased morbidity in women.
Keywords: Hysterectomy; Maternal Mortality; Placenta Accreta; Postpartum Hemorrhage; Placenta Previ
Effects of Placenta Location in Pregnancy Outcomes of Placenta Accreta Spectrum (PAS): A Retrospective Cohort Study
Objective: Placenta Accreta Spectrum (PAS) affects approximately one in a thousand deliveries. Very few
studies evaluated PAS risk factors based on their location. In this study, we have investigated the effects
of placenta location on placental adhesion-related complications, its risk factors, and outcomes.
Materials and methods: We performed a retrospective cohort study of pathology-confirmed cases of PAS
from patients with peripartum hysterectomy, at a large educational hospital in Qazvin, Iran, from 2009 to
2019. Placenta location was found by ultrasound reports and intraoperative evaluation. We measured
demographic features, basic characteristics, maternal and neonatal outcomes based on placental
location including anterior, posterior, and lateral in Placenta Accreta Spectrum. Chi-square, t-test, and
one-way ANOVA were used to examine the relation of complications, risk factors, and outcomes in PAS.
Results: A review of 70 cases showed the distribution of placenta location as follows: 57% anterior, 27%
posterior, and 16% lateral. The mean gestational age at delivery was 35 (33-39) weeks. In 78.6% (n=55)
of the patients, an association with placenta previa and in 94/2% (n=66) of cases a history of cesarean
section was found, however, it was not significantly correlated with placenta location (p=0.082). We found
that surgery duration was significantly longer in patients with lateral PAS (155±38, vs 129.35±33.8 and
133.15±31.5 for anterior and posterior placenta respectively, p=0.09). Patients with lateral PAS also bled
more than the remaining two groups (2836 ml for lateral PAS vs 2002 and 1847 for anterior and posterior
placenta respectively, p=0.022). Moreover, women with a history of uterine surgery were more likely to
have posterior PAS compared to those with anterior and lateral PAS (p=0.035).
Conclusion: Differences in complications, risk factors, and outcomes of PAS based on placenta location
may lead to improved diagnosis and decreased morbidity in women
Effects of Placenta Location in Pregnancy Outcomes of Placenta Accreta Spectrum (PAS): A Retrospective Cohort Study
Objective: Placenta Accreta Spectrum (PAS) affects approximately one in a thousand deliveries. Very few
studies evaluated PAS risk factors based on their location. In this study, we have investigated the effects
of placenta location on placental adhesion-related complications, its risk factors, and outcomes.
Materials and methods: We performed a retrospective cohort study of pathology-confirmed cases of PAS
from patients with peripartum hysterectomy, at a large educational hospital in Qazvin, Iran, from 2009 to
2019. Placenta location was found by ultrasound reports and intraoperative evaluation. We measured
demographic features, basic characteristics, maternal and neonatal outcomes based on placental
location including anterior, posterior, and lateral in Placenta Accreta Spectrum. Chi-square, t-test, and
one-way ANOVA were used to examine the relation of complications, risk factors, and outcomes in PAS.
Results: A review of 70 cases showed the distribution of placenta location as follows: 57% anterior, 27%
posterior, and 16% lateral. The mean gestational age at delivery was 35 (33-39) weeks. In 78.6% (n=55)
of the patients, an association with placenta previa and in 94/2% (n=66) of cases a history of cesarean
section was found, however, it was not significantly correlated with placenta location (p=0.082). We found
that surgery duration was significantly longer in patients with lateral PAS (155±38, vs 129.35±33.8 and
133.15±31.5 for anterior and posterior placenta respectively, p=0.09). Patients with lateral PAS also bled
more than the remaining two groups (2836 ml for lateral PAS vs 2002 and 1847 for anterior and posterior
placenta respectively, p=0.022). Moreover, women with a history of uterine surgery were more likely to
have posterior PAS compared to those with anterior and lateral PAS (p=0.035).
Conclusion: Differences in complications, risk factors, and outcomes of PAS based on placenta location
may lead to improved diagnosis and decreased morbidity in women.
Keywords: Hysterectomy; Maternal Mortality; Placenta Accreta; Postpartum Hemorrhage; Placenta Previ