Throughout pregnancy, various organ systems, such as cardiovascular, respiratory, gastrointestinal, and more, adapt to pregnancy under normal physiological conditions. In addition to being a natural process, pregnancy causes physiological, psychological, and anatomical changes in the pregnant woman's organism. These changes begin immediately after fertilization, and they help meet the mother's and baby's metabolic needs and maintain the health of the mother and baby in the best possible way. All systems are affected to different degrees by the needs of the fetus. Maternal death is defined as maternal deaths resulting from direct factors related to pregnancy or the gestation process or from factors indirectly aggravated by these factors during pregnancy, during birth, or within 42 days after birth, regardless of the duration and place of pregnancy. Maternal deaths are subdivided into 2 groups: direct and indirect obstetric deaths. Direct maternal deaths resulting from obstetric complications of pregnancy. Indirect maternal deaths are caused by a pre-existing disease or diseases that develop during pregnancy and are not directly related to obstetric causes but are aggravated by the physiological effects of pregnancy. Many countries are making efforts on different issues to reduce maternal deaths, and most of these efforts yield successful results. However, in some countries, maternal mortality rates are still relatively high. Maternal deaths are a significant global health problem that must be solved as a priority. In this review, obstetric factors that cause maternal deaths and indirect causes triggered by these factors are mentioned.
Keywords: Maternal death; obstetric complication; pregnancy; maternal-fetal relations; pregnancy outcome
Gebelik boyunca, kardiyovasküler, solunum, gastrointestinal, üriner ve diğer organ sistemleri, normal fizyolojik koşullar altında gebeliğe uyum sağlar. Gebelik, doğal bir süreç olmasının yanı sıra, fizyolojik, psikolojik ve anatomik değişikliklere de yol açar. Bu değişiklikler, döllenmeden hemen sonra başlayıp, annenin ve bebeğin metabolik ihtiyaçlarını karşılamaya, anne ve bebeğin sağlığını en iyi şekilde korumaya yardımcı olur. Tüm sistemler, fetüsün ihtiyaçları doğrultusunda farklı derecelerde etkilenir. Maternal ölüm, doğrudan gebelikle veya doğum süreciyle ilgili faktörlerden ya da bu faktörlerin gebelik sırasında, doğum sırasında veya doğumdan sonraki 42 gün içinde dolaylı olarak kötüleşmesinden kaynaklanan anne ölümlerini tanımlar. Doğrudan ve dolaylı olmak üzere maternal ölümler 2 gruba ayrılır. Doğrudan maternal ölümler, gebeliğin obstetrik komplikasyonlarından kaynaklanırken, dolaylı maternal ölümler, gebelik sırasında gelişen ve obstetrik nedenlerle doğrudan ilişkili olmayan, ancak gebelikteki fizyolojik değişikliklerle kötüleşen, önceden var olan hastalıklar nedeniyle meydana gelir. Birçok ülke, maternal ölümleri azaltmaya yönelik çaba sarf etmektedir ve bu çabaların çoğu başarılı sonuçlar vermektedir. Ancak bazı ülkelerde maternal mortalite oranları hala nispeten yüksektir. Maternal ölümler, öncelikli olarak çözülmesi gereken önemli bir küresel sağlık sorunu olarak ön plana çıkmaktadır. Bu derlemede, maternal ölümlere neden olan obstetrik faktörler ve bu faktörlerin tetiklediği dolaylı nedenler ele alınmaktadır.
Anahtar Kelimeler: Maternal ölüm; obstetrik komplikasyon; gebelik; maternal-fetal ilişkiler; gebelik sonucu
- World Bank Group [Internet]. Number of maternal deaths. © 2025 The World Bank Group [Cited: April 10, 2025]. Available from: [Link]
- Dimitriadis E, Rolnik DL, Zhou W, Estrada-Gutierrez G, Koga K, Francisco RPV, et al. Pre-eclampsia. Nat Rev Dis Primers. 2023;9(1):8. Erratum in: Nat Rev Dis Primers. 2023;9(1):35. [Crossref] [PubMed]
- Redman CW, Sargent IL. Latest advances in understanding preeclampsia. Science. 2005;308(5728):1592-4. [Crossref] [PubMed]
- Chappell LC, Cluver CA, Kingdom J, Tong S. Pre-eclampsia. Lancet. 2021;398(10297):341-54. [Crossref] [PubMed]
- Dathan Stumpf A, Czarnowsky V, Hein V, Andraczek T, Stepan H. Real-world data on the clinical use of angiogenic factors in pregnancies with placental dysfunction. Am J Obstet Gynecol. 2022;226(2S):S1037-47.e2. [Crossref] [PubMed]
- Huang C, Wei K, Lee PMY, Qin G, Yu Y, Li J. Maternal hypertensive disorder of pregnancy and mortality in offspring from birth to young adulthood: national population based cohort study. BMJ. 2022;379:e072157. Erratum in: BMJ. 2022;379:o2726. [Crossref] [PubMed] [PMC]
- Li M, Qu K, Wang Y, Wang Y, Sun L. Associations of hypertensive disorders of pregnancy with cognition, dementia, and brain structure: a Mendelian randomization study. J Hypertens. 2024;42(3):399-409. [Crossref] [PubMed] [PMC]
- Duarte AG, Thomas S, Safdar Z, Torres F, Pacheco LD, Feldman J, et al. Management of pulmonary arterial hypertension during pregnancy: a retrospective, multicenter experience. Chest. 2013;143(5):1330-6. [Crossref] [PubMed] [PMC]
- Beech A, Mangos G. Management of hypertension in pregnancy. Aust Prescr. 2021;44(5):148-52. [Crossref] [PubMed] [PMC]
- Piechota J, Jelski W. Intrahepatic cholestasis in pregnancy: review of the literature. J Clin Med. 2020;9(5):1361. [Crossref] [PubMed] [PMC]
- Hagenbeck C, Hamza A, Kehl S, Maul H, Lammert F, Keitel V, et al. Management of intrahepatic cholestasis of pregnancy: recommendations of the working group on obstetrics and prenatal medicine - section on maternal disorders. Geburtshilfe Frauenheilkd. 2021;81(8):922-39. [Crossref] [PubMed] [PMC]
- Beuers U, Trauner M, Jansen P, Poupon R. New paradigms in the treatment of hepatic cholestasis: from UDCA to FXR, PXR and beyond. J Hepatol. 2015;62(1 Suppl):S25-37. [Crossref] [PubMed]
- Ozkan S, Ceylan Y, Ozkan OV, Yildirim S. Review of a challenging clinical issue: intrahepatic cholestasis of pregnancy. World J Gastroenterol. 2015;21(23):7134-41. [Crossref] [PubMed] [PMC]
- Ayar A, Kutlu S, Yilmaz B, Kelestimur H. Melatonin inhibits spontaneous and oxytocin-induced contractions of rat myometrium in vitro. Neuro Endocrinol Lett. 2001;22(3):199-207. [PubMed]
- Hettiarachchi A, Jayaratne K, De Silva C, Senanayake H, Lokunarangoda N, Agampodi S. Heart disease complicating pregnancy as a leading cause of maternal deaths in LMIC settings: the Sri Lankan experience. Lancet Reg Health Southeast Asia. 2023;15:100223. [Crossref] [PubMed] [PMC]
- Kotit S, Yacoub M. Cardiovascular adverse events in pregnancy: a global perspective. Glob Cardiol Sci Pract. 2021;2021(1):e202105. [Crossref] [PubMed] [PMC]
- Iqbal Anvar M, Talwar S, Mallapur S. A retrospective study on clinical outcomes of pregnancy-related acute kidney injury patients at a South Indian Tertiary Care Hospital. Cureus. 2023;15(11):e49610. [Crossref] [PubMed] [PMC]
- Hildebrand AM, Liu K, Shariff SZ, Ray JG, Sontrop JM, Clark WF, et al. Characteristics and outcomes of AKI treated with dialysis during pregnancy and the postpartum period. J Am Soc Nephrol. 2015;26(12):3085-91. [Crossref] [PubMed] [PMC]
- Mehrabadi A, Dahhou M, Joseph KS, Kramer MS. Investigation of a rise in obstetric acute renal failure in the United States, 1999-2011. Obstet Gynecol. 2016;127(5):899-906. [Crossref] [PubMed]
- Ünüvar S, Melekoğlu R, Şalva E, Acar C, Yaşar Ş. Relationship between guanosine triphosphate pathway and tetrahydrobiopterin in gestational diabetes mellitus. J Diabetes Metab Disord. 2020;19(2):1391-6. [Crossref] [PubMed] [PMC]
- Taber Hight E, Shah S. Acute kidney injury in pregnancy. Adv Chronic Kidney Dis. 2020;27(6):455-60. [Crossref] [PubMed] [PMC]
- Gonzalez Suarez ML, Kattah A, Grande JP, Garovic V. Renal disorders in pregnancy: core curriculum 2019. Am J Kidney Dis. 2019;73(1):119-30. Erratum in: Am J Kidney Dis. 2019;73(6):897. [Crossref] [PubMed] [PMC]
- Shah S, Verma P. Overview of pregnancy in renal transplant patients. Int J Nephrol. 2016;2016:4539342. [Crossref] [PubMed] [PMC]
- Fakhouri F, Vercel C, Frémeaux Bacchi V. Obstetric nephrology: AKI and thrombotic microangiopathies in pregnancy. Clin J Am Soc Nephrol. 2012;7(12):2100-6. [Crossref] [PubMed]
- Sansare K, Jadhav TS, Venkatraman S, Vahanwala S. Oral cancer in pregnancy: a systematic review. J Stomatol Oral Maxillofac Surg. 2023;124(6S):101647. [Crossref] [PubMed]
- Aşkın ÖD, Ünüvar S. Fitoöstrojenler ve meme kanseri ilişkisi: sistematik derleme [Phytoestrogens and breast cancer relationship: systematic review]. Literatür Eczacılık Bilimleri Dergisi. 2021;10(3):322-31. Doi: [Crossref]
- Kutlu S, Yilmaz B, Canpolat S, Sandal S, Ozcan M, Kumru S, et al. Mu opioid modulation of oxytocin secretion in late pregnant and parturient rats. Involvement of noradrenergic neurotransmission. Neuroendocrinology. 2004;79(4):197-203. [Crossref] [PubMed]
- Tagliabue M, Elrefaey SH, Peccatori F, Favia G, Navach V, Pignataro L, et al. Tongue cancer during pregnancy: surgery and more, a multidisciplinary challenge. Crit Rev Oncol Hematol. 2016;98:1-11. [Crossref] [PubMed]
- Bradley PJ, Raghavan U. Cancers presenting in the head and neck during pregnancy. Curr Opin Otolaryngol Head Neck Surg. 2004;12(2):76-81. [Crossref] [PubMed]
- Ermer MA, Kirsch K, Bittermann G, Fretwurst T, Vach K, Metzger MC. Recurrence rate and shift in histopathological differentiation of oral squamous cell carcinoma-a long-term retrospective study over a period of 13.5 years. J Craniomaxillofac Surg. 2015;43(7):1309-13. [Crossref] [PubMed]
- Dow KH. Pregnancy and breast cancer. J Obstet Gynecol Neonatal Nurs. 2000;29(6):634-40. [Crossref]
- Wang X, Zhang Y, Yang H, Xu Y. Maternal-fetal transfer of indocyanine green: a systematic review. J Matern Fetal Neonatal Med. 2022;35(25):8181-5. [Crossref] [PubMed]
- World Health Organization [Internet]. The Global Health Observatory: Indicator Metadata Registry List. © 2025 WHO [Cited: February 15, 2023]. Available from: [Link]
- World Health Organization. Trends in maternal mortality 2000 to 2017. [Link]
- Theron G, Brummel S, Fairlie L, Pinilla M, McCarthy K, Owor M, et al. Pregnancy outcomes of women conceiving on antiretroviral therapy (ART) compared to those commenced on ART during pregnancy. Clin Infect Dis. 2021;73(2):e12-e320. [Crossref] [PubMed] [PMC]
- Flores Lovon K, Soriano Moreno DR, Medina Ramirez SA, Fernandez Guzman D, Caira Chuquineyra B, Fernandez Morales J, et al. Effects of antituberculosis treatment on pregnancy outcomes in infertile women with genital tuberculosis: a systematic review. BMJ Open. 2023;13(9):e070456. [Crossref] [PubMed] [PMC]
- Jindal UN, Verma S, Bala Y. Favorable infertility outcomes following anti-tubercular treatment prescribed on the sole basis of a positive polymerase chain reaction test for endometrial tuberculosis. Hum Reprod. 2012;27(5):1368-74. [Crossref] [PubMed]
- Carrara J, Habibi A, Benachi A, Cheminet G. Sickle cell disease and pregnancy. Presse Med. 2023;52(4):104203. [Crossref] [PubMed]
- Lesage N, Deneux Tharaux C, Saucedo M, Habibi A, Galacteros F, Girot R, et al. Maternal mortality among women with sickle-cell disease in France, 1996-2009. Eur J Obstet Gynecol Reprod Biol. 2015;194:183-8. [Crossref] [PubMed]
- Beckett VA, Knight M, Sharpe P. The CAPS study: incidence, management and outcomes of cardiac arrest in pregnancy in the UK: a prospective, descriptive study. BJOG. 2017;124(9):1374-81. [Crossref] [PubMed]
- Elliott DW, Voyvodic F, Brownridge P. Sudden onset of subarachnoid block after subdural catheterization: a case of arachnoid rupture? Br J Anaesth. 1996;76(2):322-4. [Crossref]
- Powell J, Crowley CM, Minihan B, Imcha M, O?Connell NH, Philip RK, Dunne CP. The microbial pathology of maternal perinatal sepsis: a single-institution retrospective five-year review. PLoS One. 2023;18(12):e0295210. [Crossref] [PubMed] [PMC]
- Kabakus N, Ayar A, Yoldas TK, Ulvi H, Dogan Y, Yilmaz B, et al. Reversal of iron deficiency anemia-induced peripheral neuropathy by iron treatment in children with iron deficiency anemia. J Trop Pediatr. 2002;48(4):204-9. [Crossref] [PubMed]
- Yilmaz B, Gilmore DP, Wilson CA. Inhibition of the pre-ovulatory LH surge in the rat by central noradrenergic mediation: Involvement of an anaesthetic (urethane) and opioid receptor agonists. Biogenic Amines. 1996;12:423-35. [Link]
- Gilson GJ, Christensen F, Romero H, Bekes K, Silva L, Qualls CR. Prevention of group B streptococcus early-onset neonatal sepsis: comparison of the center for disease control and prevention screening-based protocol to a risk-based protocol in infants at greater than 37 weeks? gestation. J Perinatol. 2000;20(8 Pt 1):491-5. [Crossref] [PubMed]
- Agarwal S, Ranjan M, Sachan S, Kumar L. Antepartum hemorrhage and its maternal and perinatal outcome: an experience at a hospital in North India. J Family Med Prim Care. 2023;12(12):3204-8. [Crossref] [PubMed] [PMC]
- Fan D, Wu S, Liu L, Xia Q, Wang W, Guo X, et al. Prevalence of antepartum hemorrhage in women with placenta previa: a systematic review and meta-analysis. Sci Rep. 2017;7:40320. [Crossref] [PubMed] [PMC]
- Arboleya S, Saturio S, Gueimonde M. Impact of intrapartum antibiotics on the developing microbiota: a review. Microbiome Res Rep. 2022;1(4):22. [Crossref] [PubMed] [PMC]
- Alotaibi NM, Alroqi S, Alharbi A, Almutiri B, Alshehry M, Almutairi R, et al. Clinical characteristics and treatment strategies for Group B Streptococcus (GBS) infection in pediatrics: a systematic review. Medicina (Kaunas). 2023;59(7):1279. [Crossref] [PubMed] [PMC]
- Pfizer [Internet]. FDA grants breakthrough therapy designation to Pfizer?s Group B Streptococcus vaccine candidate to help prevent infection in infants via immunization of pregnant women. © 2025 Pfizer Inc [Cited: September 25, 2022]. Available from: [Link]
- Xavier MO, Amouzou A, Maïga A, Akseer N, Huicho L, Matijasevich A. The impact of the COVID-19 pandemic on trends in stillbirths, under-5 and maternal mortality in Brazil: Excess deaths and regional inequalities. J Glob Health. 2023;13:06040. [Crossref] [PubMed] [PMC]
- Watson OJ, Barnsley G, Toor J, Hogan AB, Winskill P, Ghani AC. Global impact of the first year of COVID-19 vaccination: a mathematical modelling study. Lancet Infect Dis. 2022;22(9):1293-302. Erratum in: Lancet Infect Dis. 2023;23(10):e400. [Crossref] [PubMed] [PMC]
- Goldshtein I, Steinberg DM, Kuint J, Chodick G, Segal Y, Shapiro Ben David S, et al. Association of BNT162b2 COVID-19 vaccination during pregnancy with neonatal and early infant outcomes. JAMA Pediatr. 2022;176(5):470-7. [Crossref] [PubMed] [PMC]
- Thwaites CL, Beeching NJ, Newton CR. Maternal and neonatal tetanus. Lancet. 2015;385(9965):362-70. [Crossref] [PubMed] [PMC]
- Center for Disease Control and Prevention [Internet]. Global Immunization: Why CDC is Involved. 2022. [Cited: November 23, 2022]. Available from: [Link]
- Aboagye RG, Amu H, Dowou RK, Bansah P, Oaikhena IO, Bain LE. Prevalence and correlates of tetanus toxoid uptake among women in sub-Saharan Africa: multilevel analysis of demographic and health survey data. PLoS One. 2023;18(12):e0296174. [Crossref] [PubMed] [PMC]
- Putra M, Roy M, Nienhouse V, Patek K, Sokol R. Comparing antepartum and postpartum opioid-related maternal deaths in the state of Michigan from 2007 to 2015. Cureus. 2023;15(11):e48690. [Crossref] [PubMed] [PMC]
- Kassebaum NJ, Bertozzi Villa A, Coggeshall MS, Shackelford KA, Steiner C, Heuton KR, et al. Global, regional, and national levels and causes of maternal mortality during 1990-2013: a systematic analysis for the Global Burden of Disease Study 2013. Lancet. 2014;384(9947):980-1004. Erratum in: Lancet. 2014;384(9947):956. [Crossref] [PubMed] [PMC]
- Renbarger KM, Slater G, Phelps B. Knowledge of maternal mortality risk among women with substance use disorders during pregnancy and postpartum. MCN Am J Matern Child Nurs. 2024;49(1):38-43. [Crossref] [PubMed]
- Meng LC, Lin CW, Chuang HM, Chen LK, Hsiao FY. Benzodiazepine use during pregnancy and risk of miscarriage. JAMA Psychiatry. 2024;81(4):366-73. [Crossref] [PubMed] [PMC]
- Hulse GK, Milne E, English DR, Holman CD. Assessing the relationship between maternal opiate use and neonatal mortality. Addiction. 1998;93(7):1033-42. [Crossref] [PubMed]
- Yuce H, Unuvar S. Antidepresanların biyoakümülasyonuna bağlı ekotoksisite riski: sistematik derleme [Risk of Ecotoxicity Due to Bioaccumulation of Antidepressants:Systematic Review]. Literatür Eczacılık Bilimleri Dergisi. 2022;11(2):152-8. [Crossref]
- Jimenez Solem E, Andersen JT, Petersen M, Broedbaek K, Jensen JK, Afzal S, et al. Exposure to selective serotonin reuptake inhibitors and the risk of congenital malformations: a nationwide cohort study. BMJ Open. 2012;2(3):e001148. Erratum in: BMJ Open. 2013;3(1):e001148corr1. [Crossref] [PubMed] [PMC]
.: Process List