Prevalence ofsubfertility & when to initiate
investigations?
What are
the usual Investigations of subfertility & investigations at pre-Ovulation induction : What are the salient
features:-
Q,1: Has prevalence has
increased? No.,It Hs not increased . The
overall incidence of infertility has remained
stable.
Q.2:-When to initiate the investigations?? Ans:-The
infertility evaluation is typically initiated after 1 year of trying to
conceive, but in couples with advanced female age (> 35 years), most
practitioners initiate
diagnostic evaluation after an inability to conceive for 6 months. But, Investigations
of Infertile couple should ideally be initiated after only after a
provisional diagnosis from history &Clinical Examination so that the investigations
are streamlined.
Q.3:-What tests?? Ans:-The Practice
Committee of the American Society for Reproductive Medicine (ASRM) has
published guidelines for a standard infertility evaluation. It includes a 1) semen analysis,
2) assessment of ovulation 3) a hysterosalpingogram, and, if indicated, tests
for 4) ovarian reserve and laparoscopy.
Q.4:-What
is the definition of unexplained subfertility?? Ans:-When
the results of a standard infertility evaluation are normal, practitioners
assign a diagnosis of unexplained infertility. Although estimates vary, the
likelihood that all such test results for an infertile
couple are normal.
Q.5. How to assess of Ovulatory
Dysfunction?? Ans:-Ovulatory
defects are present in 40% of infertile women and in approximately 15% of
couples with infertility. Often
a defect in ovulatory function manifests itself in menstrual disturbances and
can be identified by history in the majority of women.
Q.6:-What tests to order if someone complains of menstrual
abnormalities?? Ans:- A patient with menstrual abnormalities should
be investigated for underlying causes such as 1) polycystic ovarian syndrome, 2)
thyroid disease, 3) hyperprolactinemia, and 4) hypothalamic causes secondary to weight
changes. My dear members please do remember
that if menstrual pattern is eumenorrhea
( i.e. —normal menstrual cycles by history) then in such women. A highly
accurate marker of ovulation is serum progesterone is that
serum progesterone will be > 3 ng/ml postovulatory.
But occasionally an anovulatory levels of serum progesterone
(< 3 ng/mL) are observed in only a very small minority of eumenorrheic
patients.
Q.8: What are the Lab tets for
ovulation besides history of regular cycles (eumenorrhea) ?? Ans:-In addition
to a thorough menstrual history, other methods used to evaluate ovulation
include urinary luteinizing hormone (LH) ovulation predictor kits, mid luteal serum
progesterone testing, and endometrial biopsy to assess for secretory
endometrial development. Basal body temperature (BBT) recordings are no longer used
in clinical practice although BBT recordings are the least costly tool in a
reliable patient they are not difficult to interpret. But BBT methodology often
initiates a frustrating situation for the patient.
Q. 11: Ovulation predictor kits are
useful for women who do not have very long menstrual cycles and can be used by
couples to appropriately time intercourse.
Q.12:-Mid luteal progesterone levels are measured but
the question is when to estimate timing of progesterone level?? Ans: Around day
21 in women with regular (∼ 28 day) cycles. However,
they are often poorly timed if they are drawn on cycle day 21 in women with
irregular menses. In such women it is better to use an ovulation kit and
measure the progesterone levels 7 to 8 days after the LH surge is detected.
Serum progesterone levels higher than 3 ng/mL suggest that ovulation has
occurred and levels higher than 10 ng/mL are optimum.
What about endometrial biopsy?? It is not
done nowadays. Although endometrial biopsy results were previously used to
diagnose luteal phase defect, they do not correlate with fertility status and
hence are no longer recommended.
Q.12:- How to assess Ovarian
Reserve?
Another test which has been added in last two decades due to
increased age of marriage & environmental pollution the prevalence of dwindling
ovarian reserve is on the rise. So Ovarian reserve has been added to the workup
of subfertile couples . Such tets include
is designed for women with advanced age, with evidence of endometriosis or
history of prior ovarian surgery. Such women are at increased risk for diminished ovarian
function or reserve. Given the relatively noninvasive nature of the testing,
several practitioners are including the evaluation of ovarian reserve as
first-line workup for infertility. The testing includes a cycle 1)AFC 2) AMH 3) day 3 serum follicle-stimulating hormone
(FSH) and estradiol level.
Very rarely clomiphene
citrate challenge test is done The caveat is that the results of these tests are not
absolute indicators of infertility but abnormal levels correlate with decreased
response to ovulation induction medications and lowered live birth rates after
IVF.
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