Abstract
Purpose
Through this study, we aimed to evaluate the effects of different types of placenta previa (PP) on maternal and neonatal outcomes.
Methods
This study was conducted in The Third Affiliated Hospital of Guangzhou Medical University and Tongji Hospital between January 2009 and 2019. PP was traditionally classified into four types, namely low-lying placenta, marginal, partial, and complete PP. Previous studies have classified PP into two types, namely low-lying placenta and PP. Based on our clinical experience, we proposed the classification of PP into three types, for the first time, which included low-lying placenta, “marpartial” (marginal and partial) PP, and complete PP. Multivariate logistic regression analysis was performed to determine the effects of different types of PP on maternal and neonatal outcomes.
Results
In total, 4490 singleton pregnancies were complicated with PP. In the four-classification method, compared with women with low-lying placenta, women with complete PP had a risk of placenta accrete spectrum disorders, postpartum hemorrhage (PPH), hemorrhagic shock, severe PPH, blood transfusion, hysterectomy, puerperal infection, preterm labor, NICU admission, and low birth weight. There was no difference in maternal and neonatal outcomes between marginal and partial PP, except for increased chances of preterm labor and low birth weight in partial PP. In the two-classification method, PP was the risk factor for most of the adverse maternal and neonatal outcomes, compared with low-lying placenta.
Conclusion
Complete PP and low-lying placenta were associated with the highest and lowest risks of adverse pregnancy outcomes, respectively, whereas clinically similar outcomes were observed between marginal and partial PP. The three-classification of PP may be practical from the clinical perspective.
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Data availability
The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
Abbreviations
- PP:
-
Placenta previa
- PAS:
-
Placenta accrete spectrum
- PPH:
-
Postpartum hemorrhage
- ICU:
-
Intensive care unit
- NICU:
-
Neonatal intensive care unit
- AIUM:
-
American Institute of Ultrasound in Medicine
- CI:
-
Confidence interval
- aOR:
-
Adjusted odds ratios
- ART:
-
Assisted reproductive technology
- DM:
-
Diabetes mellitus
References
Faiz AS, Ananth CV (2003) Etiology and risk factors for placenta previa: an overview and meta-analysis of observational studies. J Matern Fetal Neonatal Med 13:175–190. https://doi.org/10.1080/jmf.13.3.175.190
Jauniaux E, Alfirevic Z, Bhide AG, Belfort MA, Burton GJ, Collins SL, Dornan S, Jurkovic D, Kayem G, Kingdom J, Silver R, Sentilhes L, Royal College of O, Gynaecologists (2019) Placenta praevia and placenta accreta: diagnosis and management: green-top guideline No. 27a. BJOG 126:e1–e48. https://doi.org/10.1111/1471-0528.15306
Roustaei Z, Vehvilainen-Julkunen K, Tuomainen TP, Lamminpaa R, Heinonen S (2018) The effect of advanced maternal age on maternal and neonatal outcomes of placenta previa: a register-based cohort study. Eur J Obstet Gynecol Reprod Biol 227:1–7. https://doi.org/10.1016/j.ejogrb.2018.05.025
Yu SCH, Cheng YKY, Tse WT, Sahota DS, Chung MY, Wong SSM, Chan OK, Leung TY (2020) Perioperative prophylactic internal iliac artery balloon occlusion in the prevention of postpartum hemorrhage in placenta previa: a randomized controlled trial. Am J Obstet Gynecol. https://doi.org/10.1016/j.ajog.2020.01.024
Baumfeld Y, Herskovitz R, Niv ZB, Mastrolia SA, Weintraub AY (2017) Placenta associated pregnancy complications in pregnancies complicated with placenta previa. Taiwan J Obstetr Gynecol 56:331–335. https://doi.org/10.1016/j.tjog.2017.04.012
Tsuji M, Shibata E, Askew DJ et al (2019) Associations between metal concentrations in whole blood and placenta previa and placenta accreta: the Japan Environment and Children’s Study (JECS). Environ Health Prev Med 24:40. https://doi.org/10.1186/s12199-019-0795-7
Walfisch A, Beharier O, Shoham-Vardi I, Sergienko R, Landau D, Sheiner E (2016) Placenta previa and long-term morbidity of the term offspring. Eur J Obstet Gynecol Reprod Biol 203:1–4. https://doi.org/10.1016/j.ejogrb.2016.05.001
Oyelese Y, Smulian JC (2006) Placenta previa, placenta accreta, and vasa previa. Obstet Gynecol 107:927–941. https://doi.org/10.1097/01.AOG.0000235893.09300.b7
Garofalo A, Pilloni E, Alemanno MG, Garofalo G, Sciarrone A, Todros T, Viora E (2019) Ultrasound accuracy in prenatal diagnosis of abnormal placentation of posterior placenta previa. Eur J Obstet Gynecol Reprod Biol 242:86–91. https://doi.org/10.1016/j.ejogrb.2019.09.021
Reddy UM, Abuhamad AZ, Levine D, Saade GR, Invited FIW, P, (2014) Fetal imaging: executive summary of a Joint Eunice Kennedy Shriver National Institute of Child Health and Human Development, Society for Maternal-Fetal Medicine, American Institute of Ultrasound in Medicine, American College of Obstetricians and Gynecologists, American College of Radiology, Society for Pediatric Radiology, and Society of Radiologists in Ultrasound Fetal Imaging Workshop. Am J Obstet Gynecol 210:387–397. https://doi.org/10.1016/j.ajog.2014.02.028
Jauniaux E, Alfirevic Z, Bhide AG, Burton GJ, Collins SL, Silver R, Royal College of O, Gynaecologists (2019) Vasa praevia: diagnosis and management: green-top guideline no. 27b. BJOG 126:e49–e61. https://doi.org/10.1111/1471-0528.15307
Tuzovic L (2006a) Complete versus incomplete placenta previa and obstetric outcome. Int J Gynaecol Obstet 93:110–117. https://doi.org/10.1016/j.ijgo.2006.02.006
Baba Y, Takahashi H, Ohkuchi A, Usui R, Matsubara S (2016) Which type of placenta previa requires blood transfusion more frequently? A new concept of indiscernible edge total previa. J Obstetr Gynaecol Res 42:1502–1508. https://doi.org/10.1111/jog.13097
Dola CP, Garite TJ, Dowling DD et al (2003) Placenta previa: does its type affect pregnancy outcome? Am J Perinatol 20:353–360. https://doi.org/10.1055/s-2003-45282
Quant HS, Friedman AM, Wang E, Parry S, Schwartz N (2014) Transabdominal ultrasonography as a screening test for second-trimester placenta previa. Obstet Gynecol 123:628–633. https://doi.org/10.1097/AOG.0000000000000129
Jauniaux E, Ayres-de-Campos D, Langhoff-Roos J, Fox KA, Collins S, Diagnosis FPA, Management Expert Consensus P (2019) FIGO classification for the clinical diagnosis of placenta accreta spectrum disorders. Int J Gynaecol Obstet 146:20–24. https://doi.org/10.1002/ijgo.12761
Lier H, Bernhard M, Hossfeld B (2018) Hypovolemic and hemorrhagic shock. Anaesthesist 67:225–244. https://doi.org/10.1007/s00101-018-0411-z
Gluck O, Mizrachi Y, Bar J, Barda G (2018) The impact of advanced maternal age on the outcome of twin pregnancies. Arch Gynecol Obstet 297:891–895. https://doi.org/10.1007/s00404-018-4656-1
Feng Y, Li X-Y, Xiao J et al (2018) Risk factors and pregnancy outcomes: complete versus incomplete placenta previa in mid-pregnancy. Curr Med Sci 38:597–601. https://doi.org/10.1007/s11596-018-1919-9
Ma L-k, Han N, Yang J-q, Bian X-m, Liu J-t (2012) Clinical analysis of placenta previa complicated with previous caesarean section. Chin Med Sci J 27:129–133. https://doi.org/10.1016/s1001-9294(14)60044-4
Tuzovic L (2006b) Complete versus incomplete placenta previa and obstetric outcome. Int J Gynaecol Obstetr Off Organ Int Feder Gynaecol Obstetr 93:110–117. https://doi.org/10.1016/j.ijgo.2006.02.006
Daskalakis G, Simou M, Zacharakis D, Detorakis S, Akrivos N, Papantoniou N, Fouskakis D, Antsaklis A (2011) Impact of placenta previa on obstetric outcome. Int J Gynaecol Obstetr Off Organ Int Feder Gynaecol Obstetr 114:238–241. https://doi.org/10.1016/j.ijgo.2011.03.012
Gorodeski IG, Bahari CM (1987) The effect of placenta previa localization upon maternal and fetal-neonatal outcome. J Perinat Med 15:169–177. https://doi.org/10.1515/jpme.1987.15.2.169
Oppenheimer LW, Farine D, Ritchie JWK, Lewinsky RM, Telford J, Fairbanks LA (1991) What is a low-lying placenta? Am J Obstet Gynecol 165:1036–1038. https://doi.org/10.1016/0002-9378(91)90465-4
Dashe JS, Dd Fau M, Ramus RM, Rm Fau R, Santos-Ramos R, Fau SRR, Twickler DM, Twickler DM (2002) Persistence of placenta previa according to gestational age at ultrasound detection. Obstet Gynecol 99:692–697. https://doi.org/10.1016/s0029-7844(02)01935-x
Acknowledgements
This study was supported by grants from the National Key R&D Program of China (No. 2016YFC1000405, 2017YFC1001402, 2018YFC1004104, and 2018YFC10029002), Guangzhou clinical high-tech, major characteristic technology project - treatment optimization of placental percreta disease diagnosed based on 3D technology and the National Natural Science Foundation (No. 81830045, 81671533, 81971415, and 82071652).
Funding
This study was supported by grants from the National Key R&D Program of China (No. 2016YFC1000405, 2017YFC1001402, 2018YFC1004104, and 2018YFC10029002), Guangzhou clinical high-tech, major characteristic technology project - treatment optimization of placental percreta disease diagnosed based on 3D technology and the National Natural Science Foundation (No. 81830045, 81671533, 81971415, and 82071652). The funding sources had no influence on the content of the study.
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LZ, SB, and ZW contributed to the study design, data analysis, and manuscript writing and revision. JC, JT, JG, SX, and LL contributed to the data analysis and manuscript revision. LR, SZ, and LH contributed to data collection and management, SW, LD, and DC contributed to the manuscript revision and project development. All authors read and approved the final manuscript.
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This study was approved by the Research Ethics Board of the Third Affiliated Hospital of Guangzhou Medical University and Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology.
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Bi, S., Zhang, L., Wang, Z. et al. Effect of types of placenta previa on maternal and neonatal outcomes: a 10-year retrospective cohort study. Arch Gynecol Obstet 304, 65–72 (2021). https://doi.org/10.1007/s00404-020-05912-9
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DOI: https://doi.org/10.1007/s00404-020-05912-9
Keywords
- Previa placenta
- Classification
- Ultrasound
- Maternal outcome
- Neonatal outcome