Reproductive System Pathology Flashcards
What is the clinical definition of infertility?
- Inability to conceive within one year of trying
True or false. Infertility rates are increasing.
False. Rates are not increasing, but our screening and treatment options have
Infertility is present in ___% of the US reproductive-age population.
11%
_____ infertility refers to anything that impacts ova production
Ovulatory
_____ infertility refers to structural damage to the oviducts and prevent movement of the ova or fertilization
Tubal
______ infertility refers to damage that can prevent implantation or maintenance of a pregnancy.
Uterine
What are the potential causes of ovulatory infertility?
- Hypothalamus/pituitary disease
- Insufficient production of gonadotropins
- PCOS
- Chemotherapy/pelvic irradiation
What causes polycystic ovarian syndrome (PCOS)?
Gonadotropin insufficiency; directly damages the ovaries
How can infections cause infertility? (3)
- Inflammation, scars, and adhesions prevent implantation
- Block transport/implantation
- Can cause ectopic pregnancies
How can thyroid disease cause infertility?
- Excess TRH, in response to low thyroid hormone levels, induces PRL secretion
- At high levels, PRL will suppress GnRH
How do drugs that alter PRL secretion and/or damage to the pituitary cause hyperprolactinemia?
Prevent dopamine from inhibiting PRL secretion
How does excess dopamine affect fertility? (2)
- Alter gonadotropin release
- Directly effect on follicles
What are some pretesticular factors that can affect spermatogenesis? (5)
- Hormones and medications
- Systemic diseases
- Environmental/lifestyle factors
- Dietary deficiencies
- Toxins
How do anabolic steroids affect spermatogenesis?
Initiate negative feedback loop that reduces LH/FSH levels
What are some testicular causes of infertility? (4)
- Elevated testicular temperature
- Ionizing radiation and alkylating agents
- Developmental disorders
- Local infections
What is the most common cause of male infertility?
Varicocele: abnormally dilated scrotal veins
True or false. Trauma to the testes causes irreversible damage, which leads to infertility
False. It can be reversible with early intervention
What are the two primary circumstances when testicular torsion can occur?
- Neonatal - in utero or shortly after birth; no anatomic defect
- Adult - usually in adolescence
If torsion is reversed within _______, patients generally have a full recovery.
6 hours
What genetic diseases can impact sperm production? (2)
- Klinefelter syndrome
- Microdeletions on the Y chromosome