Assisted ReproductionBy Dr Shaimaa Kadhim AL-Khafajy.

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Presentation transcript:

Assisted ReproductionBy Dr Shaimaa Kadhim AL-Khafajy

Assisted reproduction: It is the facilitation of natural conception by some form of scientific intervention. There are many forms. Assisted conception techniques abbreviations: Abbreviation Definition IVFIn Vitro Fertilization IUI Intrauterine Insemination ICSIIntracytoplasmic Sperm Injection PGDPreimplantation Genetic Diagnosis PGS Preimplantation Genetic Screening DOTDirect Oocyte Transfer PROSTPronuclear Stage Transfer

DIPTDirect Intraperitoneal Insemination MESAMicroepididymal Sperm Aspiration TESETesticular Sperm Extraction PESAPercutaneous Epedidymal Sperm GIFT Gamete Intrafallopian Transfer Investigations prior to assisted conception: To ensure best results when assisted conception is performed, to reduce the chance of any diagnosis being missed, before multiple cycles are embarked upon with subsequent emotional and financial cost to the patient if they are unsuccessful. These include: 1.Hormonal profile: AMH, FSH, E2 assess ovarian reserve Progesterone (check of ovulation)

2. Semen analysis. 3. Pelvic ultrasound. 4. Evaluation of uterine cavity and fallopian tubes: HSG, laparoscopy and hysteroscopy. 5. For the male: not only to assess for normal WHO sperm criteria, but most units go for sperm function test to choose the best techniques. Also assessment for other problems like antisperm antibodies.

Notes: -Patients should be advised to stop smoking as this significantly reduces effectiveness of all forms of ART. - It is recommended that the patient should have a BMI of between Outside this range, success rates of ART are reduced. If BMI > 30 then also miscarriage rate is higher and incidence of complications as OHSS is also increased.

Intrauterine Insemination: (IUI) Prepared sample of sperm, being placed into the uterine cavity using a cannula, at the appropriate time of the patients menstrual cycle. Then 2 weeks later a PT is performed to see if the cycle has been successful. IUI can be done in natural cycle or after stimulation with clomid or FSH. When stimulation is used monitoring by U/S to make sure of having the desired effect of induction (i.e. one or at most two developing follicles over 18mm) if more then the cycle should be cancelled. Otherwise HCG injection is given approximately 36 hours prior to the insemination to ensure optimal timing with ovulation.

Advantages: 1)Relatively simple technique that is cost effective. 2) It is not invasive as IVF. 3)Allows fertilization to occur at the fallopian tubes, therefore it is generally acceptable to most religious groups. Disadvantage: 1)Success rate is lower than IVF, 5% for natural cycle, 8-10% with clomid, 12-18% if FSH is used. 2)Requires at least one healthy fallopian tube and reasonable sperm parameters. 3)If failure occurs, then less information is obtained than if it was IVF cycle particularly if possible egg or embryo quality. 4)If monitoring is suboptimal then there is increased risk of higher order multiple, OHSS, also the patient should be warned about the possibility of ectopic and on early scan at 6-7 weeks offered after positive PT.

Indications: 1.Unexplained infertility. 2.Mild male factor. 3.Ejaculatory problem. 4.Cervical problem. 5.Ovulatory disorders. 6.Mild endometriosis. 7.To optimize the use of donor sperm.

In Vitro Fertilization (IVF): Involves surgical removal of the mature oocyte from the ovary and fertilization by sperm in the laboratory. The world’s first successful IVF baby was delivered in Indications: 1.Severe tubal disease – tubal blockage. 2.Severe endometriosis. 3.Moderate male factor. 4.Unexplained infertility. 5.Unsuccessful IUI.

Stages of IVF: 1)Pituitary down regulation. 2)Ovarian stimulation. 3)hCG trigger. 4)Oocyte retrieval. 5)Fertilization (insemination or ICSI). 6)Embryo culture. 7)Embryo transfer. 8)Luteal support. IVF protocols are now categorized to 3 main groups: 1.Natural cycle. 2.Long protocol: using GnRH agonist. 3.Short protocol using GnRH antagonist. Monitoring is used by serial transvaginal ultrasound scan to assess the follicular growth.

An IVF treatment cycle

HCG trigger: is used to induce final maturation of the oocyte prior to oocyte retrieval. It is given when either 1 or 2 follicles reach 18 mm. the injection is given so that oocyte retrieval is done approximately34 hours later, before physiological ovulation occur. Oocyte retrieval: Usually by ultrasound directed needling of the ovaries. Under local anesthesia and some form of intravenous sedation enable for transvaginal egg retrieval, it can be done under GA. Oocyte retrieval can be done also laparoscopically.

Embryo transfer: Eggs are fertilized by routine insemination with a concentration of approximately normally motile sperm per ml or by ICSI, they are incubated in special media with careful control of pH, temperature, humidity and gas content. Traditionally, most embryos are transferred at day 2 after egg collection, but now there is evidence that transfer on day 5 achieve higher pregnancy rate. Regulations in UK for example: to transfer 2 embryos for those 40 years of age, 3 embryos can be transferred. The other normal embryos are frozen and can be transferred in subsequent cycle.

Luteal phase support: It is used because superovulation may impair normal corpus luteal function. It is broadly divided to two groups: a.Use of luteotropic preparations such as hCG. b.Use of progestogens or progesterone. hCG is given as S.C. injection, and it increase the risk of OHSS, while progesterone can be given as tablets, injection, vaginal gel or pessaries. LPS is given for 2 weeks as a minimum, but some centers use it up to 12 weeks.

Pregnancy test: Pregnancy test is generally done 12 days after the embryo transfer and can be performed either at home with urinary PT or at clinic with a serum PT. If PT is +ve then U/S is offered 2-3 weeks later to ensure it is intrauterine and to assess viability. ICSI: It is done when individual morphologically normal sperm is immobilized by striking the tail, injected into a mature oocyte. Indications: 1)Severe male factor infertility including azoospermia and subsequent surgical sperm retrieval by for ex: MESA, TESE, PESA. 2)Severe oligo-astheno-teratozoospermia. 3)Poor or total non fertilization from previous IVF cycles. 4)Preimplantation genetic diagnosis cycles.

Most IVF centers have 40-50% of their total IVF cycles using ICSI. Before ICSI, the male partner is offered karyotype, some centers Y chromosome micro-deletion screening. With ICSI there is slight increase in genetic abnormalities of the offspring. Most of them are minor, the major congenital malformation rate is thought to be similar to that of general population. Egg donotation: Indications: 1.Ovarian failure either premature or physiological. 2.Patients with very poor ovarian function where previously IVF has failed. 3.Patients over the age of 45 and with severe male factor disease necessitating ICSI. 4.Patients with hereditary genetic disease where using the patient’s own gametes is not advisable.

Sperm donation: Indications: 1)Azoospermia. 2)Carriers of severe genetic disease. Surrogacy: used when the patient’s uterus is either absent or unable to maintain a pregnancy, and a surrogate or host uterus is used to carry the pregnancy. Generally used in young patient who has lost her uterus due to cancer or uncontrollable bleeding as PPH or difficult myomectomy.

PGD: is a form of very early prenatal diagnosis. It combines ART with molecular and cytogenetics to detect genetic disease in embryos at the preimplantation stage. Indications: 1)Single gene defects such as cystic fibrosis, thalassemia or sickle cell disease. 2)Chromosomal rearrangement such as translocation. 3)HLA matching for donor sibling stem cell transplantation.

Complications of ART: 1.Multiple pregnancy: 24% of patients will have twin when 2-3 embryos are transferred. 2.Ectopic pregnancy: The risk is increased not only in patients with tubal disease and it is thought to be due to post-embryo transfer uterine contraction that force the embryo into the fallopian tubes. 3.Transvaginal oocyte retrieval complications which include infection of the ovaries causing ovarian abscess, damage to the bowel. It is around at 1% or less. 4.Ovarian hyperstimulation syndrome: Characterized by an excessive ovarian response resulting in multiple follicular growth. Usually it is mild-moderate, but severe cases can be life threatening and is associated with intravascular fluid depletion, thrombosis, ascites, pleural effusion.

Risk factors: -Young patient. -High estradiol level. -Polycystic ovaries. Management: Hospital admission with careful monitoring of fluid balance. Human albumin solution may be given if hypoproteinemia develops. If ascites is present → drainage. Thromboprophylaxis by antithrombotic stockings and heparin. Subsequent pregnancy is usually uneventful, rarely when the patient’s condition is deteriorating, her life at risk, then pregnancy may need to be terminated.

Thank you