{"id":22101,"date":"2026-09-19T22:01:35","date_gmt":"2026-09-19T22:01:35","guid":{"rendered":"https:\/\/www.lowcostivf.net\/?p=22101"},"modified":"2026-09-19T22:07:55","modified_gmt":"2026-09-19T22:07:55","slug":"when-is-the-right-time-to-trigger","status":"publish","type":"post","link":"https:\/\/www.lowcostivf.net\/tr\/latest-news-from-north-cyprus-ivf-center\/when-is-the-right-time-to-trigger\/","title":{"rendered":"Tetikleme \u0130\u00e7in Do\u011fru Zaman Ne Zaman?"},"content":{"rendered":"<h2 class=\"wp-block-heading\"><strong>Folik\u00fcl Boyutunun, Son Oosit Olgunla\u015fmas\u0131n\u0131n ve \u00c7ift Tetikleme Stratejisinin Bilimi<\/strong><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Geli\u015fmekte olan folik\u00fcler kohort uygun bir a\u015famaya ula\u015ft\u0131\u011f\u0131nda, oosit olgunla\u015fmas\u0131n\u0131n son a\u015famalar\u0131n\u0131 ba\u015flatmak i\u00e7in bir tetikleyici enjeksiyon uygulan\u0131r. Bu, bir IVF d\u00f6ng\u00fcs\u00fcn\u00fcn en hassas zamanlamal\u0131 ad\u0131mlar\u0131ndan biridir, \u00e7\u00fcnk\u00fc tetikleyici oosit mayozunun yeniden ba\u015flamas\u0131n\u0131 te\u015fvik eder ve olgun oositleri toplama i\u00e7in haz\u0131rlar.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Tetikleyici, insan koryonik gonadotropini (hCG), bir GnRH agonisti veya se\u00e7ilmi\u015f hastalarda, ikili tetikleyici olarak bilinen ikisinin bir kombinasyonunu i\u00e7erebilir. hCG, LH resept\u00f6r\u00fcne ba\u011flan\u0131r ve son oosit olgunla\u015fmas\u0131n\u0131 destekleyen nispeten uzun s\u00fcreli bir LH benzeri sinyal sa\u011flar. Antagonist bir d\u00f6ng\u00fcde kullan\u0131ld\u0131\u011f\u0131nda, GnRH agonisti tetikleyici, hipofiz bezini hem LH hem de FSH&#039;nin k\u0131sa s\u00fcreli endojen bir art\u0131\u015f\u0131n\u0131 \u00fcretmeye te\u015fvik eder.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u00e7ift tetikleyici<\/strong>&nbsp;Bu nedenle, hem agonistin \u00fcretti\u011fi endojen LH\/FSH art\u0131\u015f\u0131ndan hem de hCG&#039;nin sa\u011flad\u0131\u011f\u0131 daha s\u00fcrekli LH resept\u00f6r aktivitesinden faydalanmak amac\u0131yla hCG, bir GnRH agonisti ile birle\u015ftirilir. Bu yakla\u015f\u0131m, \u00f6zellikle \u00f6nceki bir siklusun beklenenden daha d\u00fc\u015f\u00fck say\u0131da olgun (MII) oosit ile sonu\u00e7land\u0131\u011f\u0131, geli\u015fmi\u015f folik\u00fcl say\u0131s\u0131na k\u0131yasla nispeten d\u00fc\u015f\u00fck oosit verimi elde edildi\u011fi veya optimal olmayan son oosit olgunla\u015fmas\u0131na dair ba\u015fka kan\u0131tlar bulundu\u011fu durumlarda, se\u00e7ilmi\u015f hastalarda s\u0131kl\u0131kla de\u011ferlendirilir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Se\u00e7ilmi\u015f hastalarda bu yakla\u015f\u0131m\u0131 destekleyen klinik kan\u0131tlar mevcuttur. Hu ve ark. (2021) taraf\u0131ndan yap\u0131lan, \u201cFolik\u00fcler olgunla\u015fma i\u00e7in GnRH agonisti ve hCG (\u00e7ift tetikleme) ile hCG tetikleme kar\u015f\u0131la\u015ft\u0131rmas\u0131\u201d ba\u015fl\u0131kl\u0131 randomize kontroll\u00fc \u00e7al\u0131\u015fmalar\u0131n sistematik incelemesi ve meta-analizi, 1048 IVF hastas\u0131n\u0131 analiz etmi\u015ftir. Sadece hCG ile kar\u015f\u0131la\u015ft\u0131r\u0131ld\u0131\u011f\u0131nda, \u00e7ift tetikleme, yakla\u015f\u0131k 1,5 ek yumurta h\u00fccresi, bir ek olgun yumurta h\u00fccresi, daha fazla d\u00f6llenmi\u015f yumurta h\u00fccresi ve kullan\u0131labilir embriyo ile birlikte, birle\u015ftirilmi\u015f analizde daha y\u00fcksek canl\u0131 do\u011fum oran\u0131yla ili\u015fkilendirilmi\u015ftir. Bu bulgular cesaret vericidir, ancak \u00e7ift tetiklemenin her hasta i\u00e7in gerekli veya \u00fcst\u00fcn oldu\u011fu anlam\u0131na gelmez.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Ne zaman tetikleme yapmal\u0131y\u0131z?<\/strong>\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Folik\u00fcl boyutu, son oosit olgunla\u015fmas\u0131n\u0131n ne zaman tetiklenmesi gerekti\u011finin belirlenmesinde kullan\u0131lan en \u00f6nemli fakt\u00f6rlerden biridir, ancak her kad\u0131n i\u00e7in en uygun tek bir folik\u00fcl \u00e7ap\u0131 yoktur.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Geleneksel bir yumurtal\u0131k stim\u00fclasyon d\u00f6ng\u00fcs\u00fcnde, tetikleyici uyguland\u0131\u011f\u0131nda klinik olarak \u00f6nemli folik\u00fcllerin \u00e7o\u011funun yakla\u015f\u0131k 16-21 mm olmas\u0131n\u0131 hedefliyoruz. Bu, uluslararas\u0131 IVF uygulamas\u0131yla b\u00fcy\u00fck \u00f6l\u00e7\u00fcde tutarl\u0131d\u0131r; burada tetikleyici genellikle \u00f6nde gelen folik\u00fcllerin birka\u00e7\u0131 yakla\u015f\u0131k 16-22 mm oldu\u011funda uygulan\u0131r.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Ancak, folik\u00fcl boyutu ile oosit olgunlu\u011fu aras\u0131ndaki ili\u015fki, &quot;daha b\u00fcy\u00fck daha iyidir&quot; varsay\u0131m\u0131ndan daha karma\u015f\u0131kt\u0131r. \u00d6zellikle erken luteinizasyon veya ovulasyon endi\u015fesi oldu\u011funda, yumurtal\u0131k rezervi azalm\u0131\u015f, daha \u00f6nce zay\u0131f yumurtal\u0131k yan\u0131t\u0131 ya\u015fam\u0131\u015f veya \u00fcreme ya\u015f\u0131 ilerlemi\u015f kad\u0131nlarda optimal zamanlama farkl\u0131 olabilir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  2025 y\u0131l\u0131nda yap\u0131lacak bir \u00e7al\u0131\u015fma,&nbsp;<strong>&quot;ICSI siklusu ge\u00e7iren ve yumurtal\u0131k rezervi azalm\u0131\u015f hastalarda tetikleme an\u0131ndaki optimal folik\u00fcl boyutunun belirlenmesi&quot;<\/strong>&nbsp;Azalm\u0131\u015f yumurtal\u0131k rezervine sahip 98 kad\u0131ndan al\u0131nan 430 adet folik\u00fcl incelendi. 15-17 mm \u00f6l\u00e7\u00fclerindeki folik\u00fcllerde, yumurta toplama oran\u0131 ,11, MII olgunluk oran\u0131 ,31, d\u00f6llenme oran\u0131 ,11 ve en kaliteli embriyo oran\u0131 ,41 olarak g\u00f6zlemlendi; bu sonu\u00e7lar, 11-14 mm veya \u226518 mm \u00f6l\u00e7\u00fclerindeki folik\u00fcllere g\u00f6re genel olarak \u00f6nemli \u00f6l\u00e7\u00fcde daha iyiydi. \u00d6nemli olarak, ba\u015flang\u0131\u00e7ta planlanan hastalar\u0131n ,31&#039;inde erken yumurtlama meydana geldi ve erken yumurtlama ya\u015fayanlarda ortalama \u00f6nde gelen folik\u00fcl boyutu 18,6 mm idi.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Ayn\u0131 \u00e7al\u0131\u015fma, erken yumurtlama ya\u015fayan kad\u0131nlarda AMH d\u00fczeylerinin anlaml\u0131 derecede d\u00fc\u015f\u00fck ve FSH d\u00fczeylerinin daha y\u00fcksek oldu\u011funu bulmu\u015ftur; bu da azalm\u0131\u015f yumurtal\u0131k rezervinin farkl\u0131 folik\u00fcler davran\u0131\u015fla ve potansiyel olarak son olgunla\u015fmaya daha erken haz\u0131r olma durumuyla ili\u015fkili olabilece\u011fi kavram\u0131n\u0131 desteklemektedir. \u0130lgin\u00e7 bir \u015fekilde, azalm\u0131\u015f yumurtal\u0131k rezervine sahip hem gen\u00e7 hem de ya\u015fl\u0131 kad\u0131nlarda 15-17 mm&#039;lik uygun aral\u0131k g\u00f6zlemlenmi\u015ftir; bu da tetikleme zamanlamas\u0131n\u0131 belirlerken yumurtal\u0131k rezervi ve folik\u00fcler davran\u0131\u015f\u0131n, folik\u00fcller i\u00e7in evrensel bir boyuta sahip olmaktan daha \u00f6nemli olabilece\u011fini d\u00fc\u015f\u00fcnd\u00fcrmektedir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Benzer bulgular Lawrenz ve ark. (2024) \u00e7al\u0131\u015fmada&nbsp;<strong>&quot;Yumurtal\u0131k rezervi ciddi derecede azalm\u0131\u015f olan ve modifiye do\u011fal sikluslu t\u00fcp bebek tedavisi g\u00f6ren kad\u0131nlar, daha k\u00fc\u00e7\u00fck folik\u00fcl boyutunda daha erken tetikleme i\u015fleminden fayda g\u00f6r\u00fcrler mi?&quot; <\/strong>Yumurta rezervi ciddi derecede azalm\u0131\u015f kad\u0131nlarda, 15 mm veya daha k\u00fc\u00e7\u00fck folik\u00fcl boyutlar\u0131nda tetikleme yap\u0131lmas\u0131, daha b\u00fcy\u00fck folik\u00fcllerin beklenmesine k\u0131yasla erken yumurtlama ve siklus iptali riskini \u00f6nemli \u00f6l\u00e7\u00fcde azaltm\u0131\u015ft\u0131r. \u00d6nemli olarak, daha erken tetikleme, olgun bir oosit elde etme olas\u0131l\u0131\u011f\u0131n\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde azaltmam\u0131\u015ft\u0131r. Oosit elde edilen sikluslar aras\u0131nda, duyarl\u0131l\u0131k analizlerinde folik\u00fcllerin 17 mm&#039;nin \u00f6tesine b\u00fcy\u00fcmesine izin verildi\u011finde yakla\u015f\u0131k 59%&#039;ye k\u0131yasla, 13-15 mm ve 15-17 mm \u00f6l\u00e7\u00fclerindeki folik\u00fcller i\u00e7in olgunluk oranlar\u0131 yakla\u015f\u0131k 92% olmu\u015ftur. Yazarlar, folik\u00fcllerin 17 mm&#039;yi a\u015fmas\u0131n\u0131 beklemenin, yumurta rezervi ciddi derecede azalm\u0131\u015f baz\u0131 kad\u0131nlarda asl\u0131nda dezavantajl\u0131 olabilece\u011fi sonucuna varm\u0131\u015flard\u0131r.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Ayr\u0131ca, yumurtal\u0131k rezervi azalm\u0131\u015f kad\u0131nlar\u0131n, GnRH antagonisti kullan\u0131l\u0131yor olsa bile, erken LH art\u0131\u015f\u0131na daha yatk\u0131n olduklar\u0131na dair kan\u0131tlar da mevcuttur. &quot; ba\u015fl\u0131kl\u0131 bir \u00e7al\u0131\u015fma<strong>Azalm\u0131\u015f yumurtal\u0131k rezervi, t\u00fcp bebek tedavisinde gonadotropin salg\u0131lat\u0131c\u0131 hormon antagonisti d\u00f6ng\u00fclerinde erken luteinize edici hormon art\u0131\u015flar\u0131na yatk\u0131nl\u0131k olu\u015fturur.<\/strong>Yap\u0131lan ara\u015ft\u0131rmada, erken LH art\u0131\u015f\u0131 ya\u015fayan hastalar\u0131n, etkilenmeyen hastalara k\u0131yasla genellikle daha ya\u015fl\u0131 olduklar\u0131 ve daha y\u00fcksek bazal FSH, daha d\u00fc\u015f\u00fck AMH ve daha d\u00fc\u015f\u00fck antral folik\u00fcl say\u0131s\u0131na sahip olduklar\u0131 bulundu.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Bu bulgular, kendi klinik uygulamalar\u0131m\u0131zda g\u00f6zlemlediklerimizle tutarl\u0131d\u0131r. Se\u00e7ilmi\u015f hastalarda, \u00f6zellikle yumurtal\u0131k rezervi azalm\u0131\u015f, daha \u00f6nce erken luteinizasyon belirtisi g\u00f6stermi\u015f veya oositlerinin daha k\u00fc\u00e7\u00fck folik\u00fcl \u00e7aplar\u0131nda olgunla\u015ft\u0131\u011f\u0131n\u0131 d\u00fc\u015f\u00fcnd\u00fcren bir \u00f6yk\u00fcs\u00fc olan kad\u0131nlarda, folik\u00fcllerin \u00e7o\u011funun geleneksel daha b\u00fcy\u00fck aral\u0131\u011fa ula\u015fmas\u0131n\u0131 beklemek yerine, bazen klinik olarak ilgili folik\u00fcl grubunun \u00e7o\u011funlu\u011fu yakla\u015f\u0131k 14-18 mm iken tetiklemeyi biraz daha erken yapmay\u0131 d\u00fc\u015f\u00fcnece\u011fiz.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Bu, t\u00fcm ya\u015fl\u0131 kad\u0131nlar\u0131n veya yumurtal\u0131k rezervi azalm\u0131\u015f t\u00fcm kad\u0131nlar\u0131n erken tetiklenmesi gerekti\u011fi anlam\u0131na gelmez. Tetikleme zamanlamas\u0131 ki\u015fiye \u00f6zel olmal\u0131d\u0131r. \u00c7ok erken tetikleme, olgunla\u015fmam\u0131\u015f oosit oran\u0131n\u0131n artmas\u0131na neden olabilir; ayn\u0131 \u015fekilde \u00e7ok ge\u00e7 tetikleme de hassas hastalarda erken luteinizasyon veya yumurtlama riskini art\u0131rabilir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Bu nedenle, karar\u0131 yaln\u0131zca folik\u00fcl boyutuna g\u00f6re vermiyoruz. Di\u011fer fakt\u00f6rleri de dikkate al\u0131yoruz. <em>Folik\u00fcl boyutlar\u0131n\u0131n say\u0131s\u0131 ve da\u011f\u0131l\u0131m\u0131, <\/em>\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>hasta ya\u015f\u0131,<\/em><br><em>AMH ve antral folik\u00fcl say\u0131s\u0131,<\/em><br><em>\u00d6nceki IVF yan\u0131t\u0131, stim\u00fclasyon s\u00fcresi,<\/em><br><em>\u00f6nceki oosit olgunla\u015fma oranlar\u0131 ve,<\/em><br><em>Serum \u00f6stradiol, LH ve progesteron d\u00fczeyleri.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Ama\u00e7, m\u00fcmk\u00fcn olan en b\u00fcy\u00fck folik\u00fclleri \u00fcretmek de\u011fil, mevcut oosit grubunun en b\u00fcy\u00fck oran\u0131n\u0131n gereksiz yere uzun s\u00fcre beklemeden geli\u015fimsel yeterlili\u011fe ula\u015fm\u0131\u015f olma olas\u0131l\u0131\u011f\u0131n\u0131n en y\u00fcksek oldu\u011fu noktay\u0131 belirlemektir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Yumurta Toplama Zamanlamas\u0131<\/strong>\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Tetikleyici enjeksiyon uyguland\u0131ktan sonra zamanlama son derece \u00f6nemli hale gelir. Yumurta toplama i\u015flemi genellikle yakla\u015f\u0131k 35-36 saat sonra planlan\u0131r; bu s\u00fcre, oositlerin son olgunla\u015fmas\u0131 i\u00e7in yeterli zaman sa\u011flarken, kendili\u011finden folik\u00fcl y\u0131rt\u0131lmas\u0131 ve yumurtlama ger\u00e7ekle\u015fmeden \u00f6nce oositlerin toplanmas\u0131n\u0131 ama\u00e7lar.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Bu nedenle, tetikleyici enjeksiyonun t\u0131bbi ekip taraf\u0131ndan belirtilen zamanda tam olarak uygulanmas\u0131 gerekir. Tetikleyici enjeksiyon planlanandan \u00f6nemli \u00f6l\u00e7\u00fcde daha erken veya daha ge\u00e7 uygulan\u0131rsa, iyi tasarlanm\u0131\u015f bir stim\u00fclasyon d\u00f6ng\u00fcs\u00fc bile tehlikeye girebilir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Yukar\u0131da tart\u0131\u015f\u0131lan folik\u00fcl boyutlar\u0131 ve zamanlamas\u0131 bu nedenle sabit kurallar yerine klinik referans aral\u0131klar\u0131 olarak de\u011ferlendirilmelidir. Farkl\u0131 hastalar ve bazen ayn\u0131 hastadaki farkl\u0131 sikluslar, folik\u00fcl b\u00fcy\u00fcmesi ve oosit olgunla\u015fmas\u0131nda farkl\u0131 paternler g\u00f6sterebilir. Tetikleme t\u00fcr\u00fc ve zamanlamas\u0131yla ilgili nihai karar her zaman tam klinik tabloya g\u00f6re bireyselle\u015ftirilmelidir.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><br><strong>Dr. Ahmet \u00d6zyi\u011fit,<\/strong><br><em>MD, MSc, PgDip, FAAMM, ABAARM<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elite Hastanesi<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Referanslar:<\/strong>\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  1. Hu KL, Wang S, Ye X, Zhang D, Hunt S. Folik\u00fcler olgunla\u015fma i\u00e7in GnRH agonisti ve hCG (\u00e7ift tetikleyici) ile hCG tetikleyici kar\u015f\u0131la\u015ft\u0131rmas\u0131: randomize \u00e7al\u0131\u015fmalar\u0131n sistematik incelemesi ve meta-analizi. \u00dcreme Biyolojisi ve Endokrinolojisi. 2021;19:78. DOI: 10.1186\/s12958-021-00766-5.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  2. Naghshineh E, Ghasemi Tehrani H, Mehrabian F, Mardanian F, Rezaei M.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Azalm\u0131\u015f yumurtal\u0131k rezervine sahip hastalarda ICSI siklusunda tetikleme an\u0131ndaki optimal folik\u00fcl boyutunun belirlenmesi. Yumurtal\u0131k Ara\u015ft\u0131rmalar\u0131 Dergisi. 2025;18(1):284. DOI: 10.1186\/s13048-025-01873-2.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  3. Lawrenz B, Kalafat E, Ata B, Melado L, Del Gallego R, Elkhatib I, Fatemi H.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  Yumurtal\u0131k rezervi ciddi derecede azalm\u0131\u015f olan ve modifiye do\u011fal sikluslu t\u00fcp bebek tedavisi g\u00f6ren kad\u0131nlar, daha k\u00fc\u00e7\u00fck folik\u00fcl boyutunda daha erken tetikleme i\u015fleminden fayda g\u00f6r\u00fcrler mi? Obstetrik ve Jinekolojide Ultrason. 2024;64(2):245\u2013252. DOI: 10.1002\/uog.27611.\n<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\n  4. Kochhar PK, Ghosh P. Azalm\u0131\u015f Yumurtal\u0131k Rezervi, \u0130n Vitro Fertilizasyonda Gonadotropin Salg\u0131lat\u0131c\u0131 Hormon Antagonist D\u00f6ng\u00fclerinde Erken Luteinize Edici Hormon Art\u0131\u015flar\u0131na Yatk\u0131nl\u0131k Olu\u015fturur. \u0130nsan \u00dcreme Bilimleri Dergisi. 2020;13(3):191\u2013195. DOI: 10.4103\/jhrs.JHRS_133_19\n<\/p>","protected":false},"excerpt":{"rendered":"<p>The Science of Follicle Size, Final Oocyte Maturation, and the Dual Trigger Strategy Once the developing follicular cohort has reached an appropriate stage, a&nbsp;trigger injection&nbsp;is administered to initiate the final stages of oocyte maturation. 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