{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,11]],"date-time":"2026-03-11T06:45:31Z","timestamp":1773211531274,"version":"3.50.1"},"reference-count":10,"publisher":"Wiley","issue":"9","license":[{"start":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T00:00:00Z","timestamp":1756944000000},"content-version":"vor","delay-in-days":3,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,9,1]],"date-time":"2025-09-01T00:00:00Z","timestamp":1756684800000},"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":["J of Obstet and Gynaecol"],"published-print":{"date-parts":[[2025,9]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Thoracoamniotic shunting is an effective treatment for fetal pleural effusion. Catheter obstruction is a serious and frequently occurring phenomenon that often requires re\u2010shunting; however, accurate diagnosis remains challenging. We present a case in which pulsed\u2010wave Doppler and color flow mapping were used to evaluate fluid flow through a thoracoamniotic shunt catheter. The Doppler assessment revealed alternating fast inflow (median: 69.2\u2009cm\/s) and slow outflow (median: 19.0\u2009cm\/s) synchronized with fetal breathing movements. Following the cessation of fetal breathing movements, a continuous and steady outflow with a constant velocity was observed. This case highlights the potential utility of Doppler ultrasound in assessing catheter patency, providing valuable information for the diagnosis of catheter obstruction in thoracoamniotic shunting.<\/jats:p>","DOI":"10.1111\/jog.70040","type":"journal-article","created":{"date-parts":[[2025,9,4]],"date-time":"2025-09-04T10:38:17Z","timestamp":1756982297000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Assessment of thoracoamniotic shunt catheter patency using pulsed\u2010wave Doppler and color flow mapping: A case report"],"prefix":"10.1111","volume":"51","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7641-219X","authenticated-orcid":false,"given":"Shigenori","family":"Iwagaki","sequence":"first","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yuichiro","family":"Takahashi","sequence":"additional","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ryuichi","family":"Shimaoka","sequence":"additional","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kazuhiko","family":"Asai","sequence":"additional","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Masako","family":"Matsui","sequence":"additional","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hitomi","family":"Ono","sequence":"additional","affiliation":[{"name":"Fetal\u2010Maternal Medicine, Obstetrics, Gifu Prefectural General Medical Center  Gifu Gifu Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2025,9,4]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1056\/NEJM198810273191706"},{"key":"e_1_2_9_3_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.6587"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1159\/000515849"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1159\/000446110"},{"key":"e_1_2_9_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.7507"},{"key":"e_1_2_9_7_1","doi-asserted-by":"publisher","DOI":"10.3390\/jcm11092312"},{"key":"e_1_2_9_8_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.4709"},{"key":"e_1_2_9_9_1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.1883"},{"key":"e_1_2_9_10_1","doi-asserted-by":"publisher","DOI":"10.1002\/pd.3994"},{"key":"e_1_2_9_11_1","doi-asserted-by":"publisher","DOI":"10.1046\/j.1469-0705.1998.12010027.x"}],"container-title":["Journal of Obstetrics and Gynaecology Research"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jog.70040","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/full-xml\/10.1111\/jog.70040","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1111\/jog.70040","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,3,10]],"date-time":"2026-03-10T09:00:32Z","timestamp":1773133232000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1111\/jog.70040"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,9]]},"references-count":10,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2025,9]]}},"alternative-id":["10.1111\/jog.70040"],"URL":"https:\/\/doi.org\/10.1111\/jog.70040","archive":["Portico"],"relation":{},"ISSN":["1341-8076","1447-0756"],"issn-type":[{"value":"1341-8076","type":"print"},{"value":"1447-0756","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,9]]},"assertion":[{"value":"2025-03-11","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-07-31","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2025-09-04","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e70040"}}