Menstruation Flashcards
Menarche comes after _______ + _______
Menarche comes after thelarche (boobs) + pubarche (pubs)
Normal Ranges for Menstruation
- Start age
- Duration
- Blood loss: < ___ mL
- Cycle length
Normal Ranges for Menstruation
- Start age = 11-13
- Duration = 3-7 days
- Blood loss: < 80 mL
- Cycle length =21-35 days
first phase of the menstrual cycle
- whats it called (2)
- what days/events mark the beginning/end
First phase of menstrual cycle
- Called the follicular/proliferative phase
- Day 1 (menses) - LH surge (usu day 14)
What hormones dominate the follicular/proliferative phase
Follicular/proliferative phase dominated by FSH and estrogen
What hormone causes the primary/dominant follicle to be selected and produce estrogen
FSH –> primary/dominant follicle selected –> domin follicle produces estrogen
What is the role of estrogen w/ the endometrium
Estrogen –> endometrial lining to proliferate
What cycle day does LH surge usually occur and what does it cause
LH surge = day 14
- causes ovulation to occur
second phase of the menstrual cycle
- what is the name of it (2)
- what hormone dominates it
second phase of the menstrual cycle
- Luteal/Proliferative phase
- dominated by progesterone
Progesterone
- What secretes itprogesterone
- what is the role of it w/ endometrium
Progesterone
- secreted by corpus luteum
- maintains the endometrium/preps for implantation of ovum
If the ovum is not fertilized in 24 hrs what happens to the corpus luteum, progesterone, and endometrium
If the ovum is not fertilized in 24 hrs –> corpeus luteum degenerates –> decr progesterone levels –> slough the endometrium –> menstruation
Primary Amenorrhea definition:
Absence of menarche by:
1. age ___ in presence of pubertal devel
- age ___ in ABSENCE of pubertal devel
- ___ yrs after completion of sexual maturity
Primary Amenorrhea definition:
Absence of menarche by:
1. age 16 in presence of pubertal devel
- age 14 in ABSENCE of pubertal devel
- 2 yrs after completion of sexual maturity
What PE exam is the marker for ovarian fxn
breast exam = marker for ovarian fxn
Amenorrhea Labs
- high FSH indicates what type of d/o
- low/norm FSH indicates what type of d/o
Amenorrhea Labs
- high FSH indicates ovarian d/o
- ovaries not secreting hormones –> neg feedback on FSH –> incr FSH produced) - low/norm FSH indicates hypothal/pituitary d/o
Etiology of Primary Amenorrhea
- 2 conditions that cause No breasts or uterus
- 2 conditions occur when breasts present but no uterus
- 2 conditions where breasts + uterus both present
Etiology of Primary Amenorrhea
- No breasts or uterus
- Gonadal agenesis (46 XY)
- Enzyme defic in testerone syn - Breasts present but no uterus
- Mullerian Agenesis
- Testicular Feminization /Androgen Insensitivity - Breasts + uterus present
- Imperforate hymen
- Transverse vaginal septum
Etiology of Primary Amenorrhea: No breasts but uterus present
- 2 locations of body where these problems occur
Etiology of Primary Amenorrhea: No breasts but uterus present
- Hypothalamus (HPO axis disruption)
- Ovaries (Ovarian Failure)
Etiology of Primary Amenorrhea: Ovarian Failure
name 2 types
Etiology of Primary Amenorrhea: Ovarian Failure
- Gonadal Agenesis
- Turner’s Syn
Etiology of Primary Amenorrhea: HPO Axis Disruption
name 2 possibles causes
Etiology of Primary Amenorrhea: HPO Axis Disruption causes
- CNS lesion
- Inadequate GnRH
Primary Amenorrhea: Ovarian Failure
- What lab abnormalities seen
- What anatomically is present/absent
- how to determine if Gonadal agenesis vs Turners
Primary Amenorrhea: Ovarian Failure
- decr estradiol –> incr LH and FSH
- (+) uterus, (-) breasts
- Gonadal agenesis = 46XX, Turner’s = 45XO
note: decr estradiol –> no breasts
A gonadal streak w/no ovaries, uterus present but no breasts, short stature, webbed neck, infertility, heart defects and learning disabilities are a/w what condition
- what is the karyotype a/w this condition
Gonadal streak w/no ovaries, uterus present but no breasts, short stature, webbed neck, infertility, heart defects and learning disabilities –> Turner’s Syndrome
(45 XO)
What is the Tx for Turner’s Syndrome
Tx for Turner’s = replace estrogen (whats missing)
note: usu given w/progesterone to reduce risk of BCA
If pt has no breasts but has uterus how to do you determine if the d/o is due to a problem at the ovaries or the hypothalamus
No breasts but uterus present, determine if hypothal or ovary problem –> LABS
Ovarian failure –> decr estradiol, incr LH + FSH
Hypothal prob –> ALL labs decr (GnRH, LH, FSH)
(+) breasts, (-) uterus: Outflow Tract Abn… Mullerian Agenesis vs Androgen Insensitivity
- Which is a congental malformation –> no uterus + short vagina
- Which is has scant/no axillary or pubic hair
- Which a/w high levels of testosterone and 46 XY karyotype
- Which is a/w renal anomalies
(+) breasts, (-) uterus and norm labs: Outflow Tract Abn… Mullerian Agenesis vs Androgen Insensitivity
- congental malformation –> no uterus + short vagina = Mullerian Agenesis
- scant/no axillary or pubic hair = Androgen Insensitivity
- high levels of testosterone, 46 XY karyotype = Androgen Insensitivity
- renal anomalies = Mullerian Agenesis
Primary Amenorrhea: Genital Tract Obstruction
- labs: norm or abn
- anatomy: whats present/absent
- 2 examples
- Tx for both (gen)
Primary Amenorrhea: Genital Tract Obstruction
- labs: normal
- anatomy: normal (both breasts + uterus present)
- Examples
- imperforate Hymen
- tranverse vaginal septum - Tx for both = surgery
Primary Amenorrhea: HPO axis disruption
Name of condition caused by inadequate GnRH
Sxs = ansomia, delayed puberty, lack breast develop
Tx = hormone replacement
Primary Amenorrhea: HPO axis disruption
Name of condition caused by inadequate GnRH
Sxs = anosmia, delayed puberty, lack breast develop
Tx = hormone replacement
Kallmann Syndrome
What is the MC cause of delayed puberty/primary amenorrhea
what karyotypes can it be a/w it (2)
MC cause of delayed puberty/primary amenorrhea = Gonadal dysgenesis
what karyotypes can it be a/w it (2)
Definition of 2ndary Amenorrhea
Absence of menstruation for:
- ___ months/cycles in pts w/prev regular cycles
or
- ___ months in pts w/irreg cycles
- MC cause =
Definition of 2ndary Amenorrhea
Absence of menstruation for:
- 3 months/cycles in pts w/prev regular cycles
or
- 6 months in pts w/irreg cycles
- MC cause = pregnancy
Secondary Amenorrhea: how to determine site of disorder based on labs
- Site if all labs decr (FSH, LH, Estradiol)
- Site if PRL abn
- Site if decr Estradiol, incr FSH and LH
- Site if normal hormone levels
Secondary Amenorrhea: how to determine site of disorder based on labs
- all labs decr (FSH, LH, Estradiol) –> Hypothal d/o
- PRL abn –> pituitary d/o
- Decr Estradiol, incr FSH and LH –> Ovary d/o
- normal hormone levels –> uterine d/o
Progestin Withdrawal Test: admin DepoProvera x 10 days –> stop progesterone –> see if bleed
- (+) withdrawal bleed –> problem where
- (-) withdrawal bleed –> problem where (3)
Progestin Withdrawal Test: admin DepoProvera x 10 days –> stop progesterone –> see if bleed
- (+) withdrawal bleed –> ovarian problem
- (-) withdrawal bleed
- hypothal, pituitary, or uterine problem
2ndary Amenorrhea:
Pt presents w/ wt loss, excessive exercise, anorexia nervosa, amenorrhea x 7 months and osteopenia. Labs show decr FSH, LH and estradiol
Dx?
Best Tx?
Dx = Functional Hypothalamic Amenorrhea
Tx = OCPs
2ndary Amenorrhea:
G2P2 F presents w/ amenorrhea x 8 mo after delivering vaginally. She had postpartum hemorrhage and one episode of HoTN after delivery. She wasnt able to BR feed her baby. Labs showed decr PRL, T4, TSH, FSH, estradiol, and cortisol
Dx?
Tx?
Dx = Sheehan Syndrome
Tx = replace pituitary hormones
If pt has pituitary adenoma what is the PRL level expected to be?
Pituitary adenoma –> elevated PRL
Menopause before age 40 is called
Menopause before age 40 is called Premature Ovarian Failure