{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T07:48:42Z","timestamp":1791618522071,"version":"4.3.4"},"reference-count":46,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Ultrasound in Obstet &amp; Gyne"],"abstract":"ABSTRACT<\/jats:title>\n \n Objective<\/jats:title>\n To determine the efficacy and safety of different pharmacological and non\u2010pharmacological methods of feticide to induce fetal asystole prior to termination of pregnancy (TOP).<\/jats:p>\n <\/jats:sec>\n \n Methods<\/jats:title>\n MEDLINE, EMBASE, CINAHL, SCOPUS, PubMed and Cochrane Library databases were searched electronically from January 1991 to June 2025. Observational and randomized studies of feticides using pharmacological or non\u2010pharmacological methods prior to TOP in the second or third trimester were included. The primary outcome was failure to achieve fetal asystole prior to TOP. Secondary outcomes included the total dose of feticidal agent, maternal complications and influence of feticide method on feasibility and quality of postmortem evaluation. Quality assessment of the included studies was performed using the Risk Of Bias In Non\u2010randomized Studies of Interventions tool, Revised Cochrane Risk\u2010of\u2010Bias\u20102 tool and National Institutes of Health Quality Assessment Tools. A meta\u2010analysis of the proportions of failed procedures was conducted using random\u2010effects\nmodels.<\/jats:p>\n <\/jats:sec>\n \n Results<\/jats:title>\n \n Twenty\u2010five studies with a total of 10\u2009683 cases were included in the systematic review. Pooled proportions of failed procedures were 0.4% (95%\u2009CI, 0.1\u20132.4%) (\n I<\/jats:italic>\n 2<\/jats:sup>\n \u2009=\u20090%) for intracardiac potassium chloride (KCl), 3.2% (95%\u2009CI, 1.2\u20138.2%) (\n I<\/jats:italic>\n 2<\/jats:sup>\n \u2009=\u20090%) for intrafunic KCl, 4.8% (95%\u2009CI, 3.9\u20135.9%) (\n I<\/jats:italic>\n 2<\/jats:sup>\n \u2009=\u200919.0%) for intrafetal digoxin and 10.6% (95%\u2009CI, 6.4\u201317.1%) (\n I<\/jats:italic>\n 2<\/jats:sup>\n \u2009=\u20090%) for intra\u2010amniotic digoxin. A range of doses were reported for KCl, lidocaine and digoxin by all routes of injection. There were four cases of postprocedure chorioamnionitis across all studies, but no other significant adverse events related directly to feticidal procedures. There was limited assessment of the impact of feticidal agent on postmortem examinations, but fetal intravascular lidocaine and KCl were associated consistently with cell lysis.\n <\/jats:p>\n <\/jats:sec>\n \n Conclusions<\/jats:title>\n \n Feticide is an important procedure to induce asystole prior to TOP. Point estimates from the meta\u2010analysis indicate that the most effective feticidal method is intracardiac KCl. Effectiveness should be considered alongside safety and feasibility when deciding on appropriate methods for different settings. \u00a9 2026 The Author(s).\n Ultrasound in Obstetrics & Gynecology<\/jats:italic>\n published by John Wiley & Sons Ltd on behalf of International Society of Ultrasound in Obstetrics and Gynecology.\n <\/jats:p>\n <\/jats:sec>","DOI":"10.1002\/uog.70343","type":"journal-article","created":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T06:53:40Z","timestamp":1791615220000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Effectiveness of different methods of feticide: systematic review and meta\u2010analysis"],"prefix":"10.1002","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8648-8016","authenticated-orcid":false,"given":"S.","family":"Sorrenti","sequence":"first","affiliation":[{"name":"Department of Maternal and Child Health and Urological Sciences Sapienza University of Rome Rome Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Sacco","sequence":"additional","affiliation":[{"name":"Birmingham Women's and Children's NHS Foundation Trust Birmingham UK"},{"name":"Department of Applied Health Sciences University of Birmingham Birmingham UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0718-7547","authenticated-orcid":false,"given":"F.","family":"Mone","sequence":"additional","affiliation":[{"name":"Centre for Public Health, Queen's University Belfast Belfast UK"},{"name":"Centre for Fetal Medicine, Royal Jubilee Maternity Hospital Belfast UK"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0888-1650","authenticated-orcid":false,"given":"K.","family":"Navaratnam","sequence":"additional","affiliation":[{"name":"Fetal Medicine Unit, Liverpool Women's Hospital Liverpool UK"},{"name":"Harris\u2010Wellbeing Research Centre University of Liverpool Liverpool UK"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,10,9]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"crossref","first-page":"427","DOI":"10.1002\/uog.29218","article-title":"Routine 36\u2010week scan: diagnosis of fetal abnormalities","volume":"65","author":"Syngelaki A","year":"2025","journal-title":"Ultrasound Obstet Gynecol"},{"key":"e_1_2_6_3_1","doi-asserted-by":"crossref","first-page":"339","DOI":"10.1002\/uog.26141","article-title":"Prenatal exome sequencing and impact on perinatal outcome: cohort study","volume":"61","author":"Poljak B","year":"2023","journal-title":"Ultrasound Obstet Gynecol"},{"key":"e_1_2_6_4_1","doi-asserted-by":"crossref","first-page":"662","DOI":"10.1002\/pd.6115","article-title":"Diagnostic yield of exome sequencing for prenatal diagnosis of fetal structural anomalies: A systematic review and meta\u2010analysis","volume":"42","author":"Mellis R","year":"2022","journal-title":"Prenat Diagn"},{"key":"e_1_2_6_5_1","doi-asserted-by":"crossref","first-page":"679.e671","DOI":"10.1016\/j.ajog.2023.11.004","article-title":"Second\u2010trimester abortion and risk of live birth","volume":"230","author":"Auger N","year":"2024","journal-title":"Am J Obstet Gynecol"},{"key":"e_1_2_6_6_1","unstructured":"RCOG B. 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