Abstract
Vasa previa is a condition where unprotected fetal vessels cross the cervix within the membranes, posing a considerable risk of fetal death or severe morbidity if the membranes rupture before or during delivery. There has not been a definitive in utero treatment for this condition. Patients are typically closely monitored and hospitalized in the early third trimester and scheduled for cesarean delivery before term. This approach poses considerable physical, social, psychological, and financial challenges for pregnant patients and their families. Furthermore, fetal vessel rupture may lead to severe hypoxic-ischemic injury and consequent neurodevelopmental impairment. Finally, babies delivered early due to vasa previa may face both the short- and long-term consequences of prematurity. Recently, fetoscopic laser photocoagulation using a single-port fetoscope has emerged as a potential therapeutic option for patients with types II and III vasa previa. This innovative approach aims to reduce hospital stays, increases the chance of successful vaginal delivery, and potentially allows pregnancies to reach full term, providing lifelong benefits for the infant. Preliminary clinical studies on human subjects have demonstrated promising results concerning the feasibility, safety, and efficacy of this intervention for a subset of patients with types II and III vasa previa. After reviewing the current state of the art, we argued that offering fetoscopic laser photocoagulation in specialized centers under IRB supervision meets the ethical obligations of beneficence and non-maleficence for both pregnant and fetal patients, as well as the autonomy-based obligations for pregnant patients.
-
Research ethics: Not applicable.
-
Informed consent: Not applicable.
-
Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission. We certify that all authors adhered fully to the authorship guidelines and contributed to all the following domains: 1. Substantial contributions to the conception and design of the work. 2. Drafting the work and revising it critically for important intellectual content. Several virtual discussions occurred among all co-authors regarding the ethical aspects of this procedure in vasa previa. 3. Final approval of the manuscript and scientific validity of the illustration (Figure 1). 4. Agreement to be accountable for all aspects of the work in ensuring that questions related to the accuracy or integrity of any part of the work are appropriately investigated and resolved.
-
Competing interests: The authors state no conflict of interest.
-
Research funding: None declared.
-
Data availability: Not applicable.
References
1. Oyelese, Y, Javinani, A, Shamshirsaz, AA. Vasa previa. Obstet Gynecol 2023;142:503–18. https://doi.org/10.1097/aog.0000000000005287.Search in Google Scholar PubMed PubMed Central
2. Zhang, W, Giacchino, T, Chanyarungrojn, PA, Ionescu, O, Akolekar, R. Incidence of vasa praevia: a systematic review and meta-analysis. BMJ Open 2023;13:e075245. https://doi.org/10.1136/bmjopen-2023-075245.Search in Google Scholar PubMed PubMed Central
3. Oyelese, Y. Evolution from placenta previa to Type 3 vasa previa. Ultrasound Obstet Gynecol 2023;63:128–30. https://doi.org/10.1002/uog.27505.Search in Google Scholar PubMed
4. Derbala, Y, Grochal, F, Jeanty, P. Vasa previa. J Prenat Med 2007;1:2–13.Search in Google Scholar
5. Gianopoulos, J, Carver, T, Tomich, PG, Karlman, R, Gadwood, K. Diagnosis of vasa previa with ultrasonography. Obstet Gynecol 1987;69:488–91.Search in Google Scholar
6. Zhang, W, Geris, S, Al-Emara, N, Ramadan, G, Sotiriadis, A, Akolekar, R. Perinatal outcome of pregnancies with prenatal diagnosis of vasa previa: systematic review and meta-analysis. Ultrasound Obstet Gynecol 2021;57:710–9. https://doi.org/10.1002/uog.22166.Search in Google Scholar PubMed
7. Erfani, H, Haeri, S, Shainker, SA, Saad, AF, Ruano, R, Dunn, TN, et al.. Vasa previa: a multicenter retrospective cohort study. Am J Obstet Gynecol 2019;221:644.e1–5. https://doi.org/10.1016/j.ajog.2019.06.006.Search in Google Scholar PubMed
8. Conyers, S, Oyelese, Y, Javinani, A, Jamali, M, Zargarzadeh, N, Akolekar, R, et al.. Incidence and causes of perinatal death in prenatally diagnosed vasa previa: a systematic review and meta-analysis. Am J Obstet Gynecol 2024;230:58–65. https://doi.org/10.1016/j.ajog.2023.06.015.Search in Google Scholar PubMed
9. Li, P, Pan, X, Yue, C, Zheng, Z, Liu, H. Intrauterine death in vasa previa without hemorrhage: case reports. BMC Pregnancy Childbirth 2023;23:707. https://doi.org/10.1186/s12884-023-06019-0.Search in Google Scholar PubMed PubMed Central
10. Tsakiridis, I, Mamopoulos, A, Athanasiadis, A, Dagklis, T. Diagnosis and management of vasa previa: a comparison of 4 national guidelines. Obstet Gynecol Surv 2019;74:436–42. https://doi.org/10.1097/ogx.0000000000000692.Search in Google Scholar
11. Jain, V, Gagnon, R. Guideline no. 439: diagnosis and management of vasa previa. J Obstet Gynaecol Can 2023;45:506–18. https://doi.org/10.1016/j.jogc.2023.05.009.Search in Google Scholar PubMed
12. Oyelese, Y, Javinani, A, Gudanowski, B, Krispin, E, Rebarber, A, Akolekar, R, et al.. Vasa previa in singleton pregnancies: diagnosis and clinical management based on an international expert consensus. Am J Obstet Gynecol 2024. https://doi.org/10.1016/j.ajog.2024.03.013.Search in Google Scholar PubMed
13. Royal, A. New Zealand college of O, gynaecologists. In: Vasa praevia. Melbourne, Australia: RANZCOG; 2019.Search in Google Scholar
14. Jauniaux, E, Alfirevic, Z, Bhide, AG, Burton, GJ, Collins, SL, Silver, R. Vasa praevia: diagnosis and management: green-top guideline no. 27b. BJOG 2019;126:e49–61. https://doi.org/10.1111/1471-0528.15307.Search in Google Scholar PubMed
15. DSOG (Danish Society of Obstetrics and Gynecology). Velamentous cord insertion and vasa previa. 2018.Search in Google Scholar
16. Sinkey, RG, Odibo, AO, Dashe, JS. #37: diagnosis and management of vasa previa. Am J Obstet Gynecol 2015;213:615–9. https://doi.org/10.1016/j.ajog.2015.08.031.Search in Google Scholar PubMed
17. Mitchell, SJ, Ngo, G, Maurel, KA, Hasegawa, J, Arakaki, T, Melcer, Y, et al.. Timing of birth and adverse pregnancy outcomes in cases of prenatally diagnosed vasa previa: a systematic review and meta-analysis. Am J Obstet Gynecol 2022;227:173–81.e24. https://doi.org/10.1016/j.ajog.2022.03.006.Search in Google Scholar PubMed
18. Chmait, RH, Monson, MA, Chon, AH, Masri, J, Korst, LM, Incerpi, MH. Third-trimester fetoscopic ablation therapy for types II and III vasa previa. Am J Obstet Gynecol 2023;230:87. https://doi.org/10.1016/j.ajog.2023.09.015.Search in Google Scholar PubMed
19. Papanna, R, Agarwal, N, Bergh, EP, Brock, C, Espinoza, J, Johnson, A. Fetoscopic laser ablation in pregnancies with Type-II vasa previa. Ultrasound Obstet Gynecol 2023;61:779–81. https://doi.org/10.1002/uog.26153.Search in Google Scholar PubMed
20. Hendriks, S, Grady, C, Wasserman, D, Wendler, D, Bianchi, DW, Berkman, BE. A new ethical framework for assessing the unique challenges of fetal therapy trials. Am J Bioeth 2022;22:45–61. https://doi.org/10.1080/15265161.2020.1867932.Search in Google Scholar PubMed PubMed Central
21. McCullough, LB, Coverdale, JH, Chervenak, FA. Professional ethics in obstetrics and gynecology. Cambridge, UK: Cambridge University Press; 2019.10.1017/9781316841037Search in Google Scholar
22. Sacco, A, Van der Veeken, L, Bagshaw, E, Ferguson, C, Van Mieghem, T, David, AL, et al.. Maternal complications following open and fetoscopic fetal surgery: a systematic review and meta-analysis. Prenat Diagn 2019;39:251–68. https://doi.org/10.1002/pd.5421.Search in Google Scholar PubMed PubMed Central
23. Moon-Grady, AJ, Baschat, A, Cass, D, Choolani, M, Copel, JA, Crombleholme, TM, et al.. Fetal treatment 2017: the evolution of fetal therapy centers – a joint opinion from the international fetal medicine and surgical society (IFMSS) and the north american fetal therapy network (NAFTNet). Fetal Diagn Ther 2017;42:241–8. https://doi.org/10.1159/000475929.Search in Google Scholar PubMed PubMed Central
24. Harrison, MR, Adzick, NS. The fetus as a patient. Surgical considerations. Ann Surg 1991;213:279–91. https://doi.org/10.1097/00000658-199104000-00002. discussion 7–8.Search in Google Scholar PubMed PubMed Central
25. Lauder, J, Sciscione, A, Biggio, J, Osmundson, S. Society for maternal-fetal medicine consult series #50: the role of activity restriction in obstetric management: (replaces consult number 33, August 2014). Am J Obstet Gynecol 2020;223:B2–b10. https://doi.org/10.1016/j.ajog.2020.04.031.Search in Google Scholar PubMed PubMed Central
26. Hosseinzadeh, P, Shamshirsaz, AA, Cass, DL, Espinoza, J, Lee, W, Salmanian, B, et al.. Fetoscopic laser ablation of vasa previa in pregnancy complicated by giant fetal cervical lymphatic malformation. Ultrasound Obstet Gynecol 2015;46:507–8. https://doi.org/10.1002/uog.14796.Search in Google Scholar PubMed
27. Quintero, RA, Kontopoulos, EV, Bornick, PW, Allen, MH. In utero laser treatment of type II vasa previa. J Matern Fetal Neonatal Med 2007;20:847–51. https://doi.org/10.1080/14767050701731605.Search in Google Scholar PubMed
28. Ruiter, L, Kok, N, Limpens, J, Derks, JB, de Graaf, IM, Mol, BWJ, et al.. Systematic review of accuracy of ultrasound in the diagnosis of vasa previa. Ultrasound Obstet Gynecol 2015;45:516–22. https://doi.org/10.1002/uog.14752.Search in Google Scholar PubMed
29. Javid, N, Sullivan, EA, Halliday, LE, Duncombe, G, Homer, CS. Wrapping myself in cotton wool: Australian women’s experience of being diagnosed with vasa praevia. BMC Pregnancy Childbirth 2014;14:318. https://doi.org/10.1186/1471-2393-14-318.Search in Google Scholar PubMed PubMed Central
30. Fetoscopic laser photocoagulation in management of vasa previa – FLUMEN study [Internet]. 2024. Available from: https://clinicaltrials.gov/study/NCT06290232.Search in Google Scholar
© 2024 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Review
- The utilization of artificial intelligence in enhancing 3D/4D ultrasound analysis of fetal facial profiles
- Commentary
- Respect for history: an important dimension of contemporary obstetrics and gynecology
- Opinion Papers
- Fetoscopic laser photocoagulation: a medically reasonable treatment option in the management of types II and III vasa previa
- Efficacy and safety of 2-drug regime dolutegravir/lamivudine in pregnancy and breastfeeding – clinical implications and perspectives
- Original Articles – Obstetrics
- The potential impact of universal screening for vasa previa in the prevention of stillbirths
- Preinduction cervical ripening in an outpatient setting: a prospective pilot study of a synthetic osmotic dilator compared with a double-balloon catheter
- Transperineal sonographic assessment of the angle of progression before the onset of labour: how well does it predict the mode of delivery in late-term pregnancy
- Prediction of intrapartum caesarean section in vaginal breech birth: development of models for nulliparous and multiparous women
- Complementary and Alternative Medicine use among pregnant women attending antenatal clinic: a point to ponder
- Molecular evidence that GBS early neonatal sepsis results from ascending infection: comparative hybrid genomics analyses show that microorganisms in the vaginal ecosystem, amniotic fluid, chorioamniotic membranes, and neonatal blood are the same
- Original Articles – Fetus
- Echocardiographic markers at diagnosis of persistent pulmonary hypertension of the newborn
- New measurement indicator of ultrasound assessment of the fetal pancreas based on anatomical landmarks and its application to fetuses with gestational diabetes mellitus
- Original Articles – Neonates
- Mode of delivery and behavioral and neuropsychological outcomes in children at 10 years of age
- Assessment of the validity and reliability of edinburgh postpartum depression scale in Turkish men
- Letter to the Editor
- Frequency and persistence of wide pulse pressure in the newborn population
Articles in the same Issue
- Frontmatter
- Review
- The utilization of artificial intelligence in enhancing 3D/4D ultrasound analysis of fetal facial profiles
- Commentary
- Respect for history: an important dimension of contemporary obstetrics and gynecology
- Opinion Papers
- Fetoscopic laser photocoagulation: a medically reasonable treatment option in the management of types II and III vasa previa
- Efficacy and safety of 2-drug regime dolutegravir/lamivudine in pregnancy and breastfeeding – clinical implications and perspectives
- Original Articles – Obstetrics
- The potential impact of universal screening for vasa previa in the prevention of stillbirths
- Preinduction cervical ripening in an outpatient setting: a prospective pilot study of a synthetic osmotic dilator compared with a double-balloon catheter
- Transperineal sonographic assessment of the angle of progression before the onset of labour: how well does it predict the mode of delivery in late-term pregnancy
- Prediction of intrapartum caesarean section in vaginal breech birth: development of models for nulliparous and multiparous women
- Complementary and Alternative Medicine use among pregnant women attending antenatal clinic: a point to ponder
- Molecular evidence that GBS early neonatal sepsis results from ascending infection: comparative hybrid genomics analyses show that microorganisms in the vaginal ecosystem, amniotic fluid, chorioamniotic membranes, and neonatal blood are the same
- Original Articles – Fetus
- Echocardiographic markers at diagnosis of persistent pulmonary hypertension of the newborn
- New measurement indicator of ultrasound assessment of the fetal pancreas based on anatomical landmarks and its application to fetuses with gestational diabetes mellitus
- Original Articles – Neonates
- Mode of delivery and behavioral and neuropsychological outcomes in children at 10 years of age
- Assessment of the validity and reliability of edinburgh postpartum depression scale in Turkish men
- Letter to the Editor
- Frequency and persistence of wide pulse pressure in the newborn population