Endo Block 2 Flashcards
What is the most convenient population level measure of overweight and obesity currently available?
BMIs of what percentage are categorized as overweight, Class 1-3?
BMI- kg/m^2
Normal: 18.5-24.9 Over: 25-29.9 Class 1: 30-34.9 Class 2: 35-39.9 Class 3: Greater than 40
What are four cons of using BMI as a measurement tool?
Upper body obesity that is located ? and ? is more significant than lower body obesity of fat located ? or ?
Mis-classifies 25% of PTs
No account for fat location
Not accurate for sedentary/body builders
Not distinguished between fat/lean mass
Abdomen/flank
Thigh/buttocks
Fat that is located ? is more hazardous to health and is composed of ? fat
Females must have a minimum body fat of -% to have a regular menstruation?
Abdominal fat
Visceral
13-17%
Upper body obesity and abdominal fat is associated w/ abnormal adipose lipolysis leading to ? and higher incidences of ? complications
What is the number one cause of high output heart failure?
What is the number one public health concern linked to increasing levels of obesity?
Insulin resistance
Metabolic
Obesity
DM
Men must have _% body fat
What is the name of an environment that can increase the chance of a PT becoming obese?
3%
Obesigenic
What are the 5 parts of the motivational interview?
What is the most common genetic cause of obesity?
What is an independent predictor of metabolic abnormalities associated w/ obesity over and above the effects of exercise?
Nutrition intervention Physical activity Behavior therapy Pharmacotherapy Bariatric surgery
Prader-Willi Syndrome- demonstrates hyperphagia (compulsive overeating over long periods of time)
Sedentary activities
If an adopted PT is concerned about weight gain, how can this be predicted?
What are the typical features of Prader-Willi Syndrome?
Biological parents weight
Hypotonia
Almond shaped eyes
Narrow bifrontal diameter
Thin upper lip
What is done during PE for an obesity work up?
What diabetic drugs can cause weight gain?
BMI, degree/distribution of body fat, nutritional status, signs of secondary cause
Insulin
Sulfonyureas
Thizolidinediones
How much weight loss can be expected with conventional diet techniques?
What is the more important part of obesity management?
20% lose 20lbs and maintain for 2yrs
5% maintain a 40lbs loss
Avg= 7% loss from baseline
PT-Provider contact
Trimble’s obesity management plan and associated goals?
Define Very Low Calorie Diet
Diet/Exercise= greatest loss
Only diet= moderate loss
Only exercise= small loss
No Tx= no loss
800-1000cal/day x 4-6mon w/ average loss of 15%
Significant weight gain after 18mon
What are six classes of drugs that are known to cause weight gain?
What class of medication can be considered for these PTs that have underlying psych issues?
Psych/Neurological Steroid hormones Anti-diabetes (Insulin, Sulfonylureas, Thiazolidinediones) Anti-histamines Anti-HTN Anti-retroviral therapy
SSRIs
How much exercise is recommended per week by the College of Sports Med?
How much moderate exercise is recommended per day?
150min moderate
75min vigorous
Equivalent mod/vigorous combo
Weights 2x/wk
1hr
When are meds added to obesity management?
What GI agent is used for management and how does it exert it’s effect in PTs?
BMI >30
BMI >27 w/ obesity related RFs: HTN, DM2, CVD
Orlistat- Inhibits intestinal lipase/fat absorption
S/e- oily stool/diarrhea, incontinence
What CNS stimulant/anorexants are used for obesity management and how does it do it?
Lorcaserin- SSRA, promotes satiety for moderate weight loss >5%
S/e= HA, breast tumors
Phentermine- inc NorEpi/dopamine uptake suppressing appetite x 3mon
Phen/Topiramte- migraine prophylaxis, weight loss effect. C/i- hypothyroid, glaucoma
D/c if no loss in 4wks
What antidepressant/opioid agonist is used for obesity management?
Bupropion/Naltrexone- regulates dopamine reward system, cravings and overeating behaviors
S/e- GI upset
Caution in Psych Hx
C/i- HTN, opioid use, seizure, eating d/o
What GLP-1 agonist can be used for obesity management
Liraglutide- DM management med, increases insulin secretion, decreases inappropriate glucagon and slows gastric emptying
S/e- tachy, HA, hypoglycemia, nausea
C/i- medullary thyroid CA, MEN2a
What are the general contraindications for using weight loss meds?
Uncontrolled CAD Pregnancy/feeding Hx of psych dz <18y/o Certain med use- MAOIs
When is bariatric surgery a consideration for obesity management?
What is the name of the gastric bypass procedure?
> 40% BMI or >35 w/ co-morbidities
Roux-en-Y gastric bypass
Restrictive/malabsorptive surgery, distal stomach resected. Remaining pouch is anastomosed to retro-colic segment of jejunum leaving gastric capacity at 30-50mL
Dec food intake/absorption of ingested food
What is the name of the Lap Band procedure?
Define Sleeve Gastronomy
Vertical banded gastroplasty
Prosthetic band dec size of gastric outlet
Multiple f/u visits for adjustment
Creation of sleeve over bougie, removing portion of greater curvature
Dec ghrelin levels x 1yr
Restricts food intake
Define Dumping Syndrome
What does Hirsutism mean?
Bariatric surgery complication when PT has to defecate nearly immediately after eating
Latin- shaggy, hairy
Excessive terminal hair growth that appears in women in a male pattern
Androgens act on sex-hormone responsive hair follicles causing a transition from ? to ?
Half of women with Hirsutism will have ?
Vellus into terminal
Hyperandrogenism
What will be seen in women with hirsutism that have increased follicle sensitivity to normal levels of androgens?
What is the Hirsutism is pathological?
How is Hirsutism scored?
Normal labs- genetics
Elevated circulating androgens, will have elevated labs
Ferriman-Gallwey score
Norm: <8
Max: 36
Where does DHEA S come from?
Where does Androstenedione released from?
Where is testosterone ( the most potent) secreted from?
Adrenal gland
Ovary and adrenal gland
Ovary/adrenal gland
What is the most potent androgen in females?
65% is bound to ? protein
33% is bound to ? protein
Testosterone
Sex hormone binding globulin
Albumin
How and where is free testosterone converted into dihydrotestosterone?
Why is this conversion important?
In the skin by 5a-reductase
5-DHT stimulates androgen dependent hair follicles
What are the 5 etiologies of hirsutism?
Which etiology is most common in middle eastern and Mediterranean groups?
Idiopathic/familial PCOS Steroidogenic enzyme defect Neoplastic d/o Rare/pharmacologic
Idiopathic/Familial
What lab results would be seen in Med/Middle eastern females w/ Hirsutism?
What is believed to be that cause of this?
Normal androgen levels
Onset at puberty
Regular menses, PE
Higher 5a-reductase activity
What is beleived to be the most common cause of Hirsutism in females?
How is this acquired?
PCOS- function d/o of ovaries
Functional d/o of ovaries
Familial passsage of autosomal dominant trait
50% of Hirsutism PTs have elevated levels of ?
What criteria is used to Dx Hirsutism?
Testosterone
Rotterdam Criteria
1- extra androgen (hirsutism, acne, androgenic alopecia)
2- ovarian dysfunction/polycystic morphology (oligo/amenorrhea, infertility)
3- Absence of other causes of excess testosterone (pregnancy, thyroid, neoplasm)
What are the S/Sxs associated with the 3 parts of Rotterdam criteria?
Androgen excess/Elevated testosterone- Hirsutism, Acne, Androgenic alopecia
Ovarian dysfunction- Oligo/Amenorrhea w/ anovulation, infertility
Absence of other causes of testosterone- pregnancy, thyroid dysfunction, neoplasm, Cushings, Hyperprolactinemia
What are two unique facts about a PCOS Dx?
How is PCOS Tx?
30% of PCOS women doen’t have cystic ovaries
30% of normal menstruating women do have cystic ovaries
Restore cycles/fertility
Reduce Sxs- hair, oil, weight
Congenital adrenal hyperplasia is a defected level of ? enzyme?
What are the two types?
21-hydroxylase
Classic- complete deficiency; ambiguous genitals, virilized when treated w/ CCS
Non-classic: partial deficiency; PCOS and adrenal adenomas are more likely to develop
Irregular menses, gradual onset of hirsutism
What neoplastic d/os can cause Hirsutism?
Ovarian tumors
Adrenal carcinoma
Pure androgen secreting adrenal tumor
What are the 4 features of neoplastic d/o hirsutism?
What is the next step for this PT?
Onset out of peri-menarchal period
Rapid/severe hair progression
Recent menstrual irregularity
Signs of virilization (deep voice, inc muscles)
Measure androgen levels
What are the rare causes of hirsutism?
What medications can cause hirsutism?
Acromegaly
Cushings
Minoxidil- Tx of androgenic alopecia (frontal balding) Cyclosporine- imm suppressant Phenytoin- anti-seizure Anabolic steroids Progestins in OCPs (Norethindrone)
Key S/Sxs of Hirsutism
Inc hair Inc sebaceious activity Menstrual irregularities Anovulation Amenorrhea Defeminization Virilization
What lab is the most useful test for evaluating Hirsutism?
Serum androgen to find adreanl/ovarian neoplasm
Free testosterone- most important
Androstenedione
DHEA-S
If female PT has testosterone levels >200ng/dl what is the next step?
What if these tests are negative?
Pelvic exam and US
Bilateral CT of adrenal glands
What are the second and third labs evaluated during hirsutism?
Serum androstenedione- >1000 suggests ovarian/adrenal neoplasm. Do pelvic US and bilateral CT adrenal scan
Serum DHEA-S- >700mcg= adrenal source
Order bilateral adrenal CT scan
What labs are ordered for a hirsutism work up?
What images are ordered for hirsutism after PE and labs?
LH/FSH 17-hydroxyprogesterone Fasting insulin/glucose TSH/FT4/PRL UA- cortisol Lipids
Adrenal CT- elevated DHEAS, elevated testosterone after negative pelvic and US
Pelvic US- elevated testosterone/androstenedione
Pelvic MRI- visualized tumors of ovary
When are neoplastic origins of hirsutism treated?
Surgery
What are the non-surgical Tx options of hirsutism and are c/i in pregnancy?
Spirinolactone- K sparing w/ anti-androgenic action
Flutamide- non-steroid, non-selective anti-androgen
Finasteride- 5a-reductase inhibitor, only used in post-menopause females
What med can be added to spirinolactone to increase it’s efficacy?
What drug combo is more effective than spirinolactone?
OCPs
Metformin
OCPs and Flutamide
What are the new combined OCPs used to reduce hirsutism and acne?
What are the s/e of using these combos
Desogestrel
Drospirenone
Norgestimate
Inc DVT risk, use lower estrogen formulas
When/why is metformin used for hirsutism?
What is it’s use combined with?
PCOS to improve menses and promote weight loss
W/ Sironolactone
When/why is Simvastatin used for hirsutism?
When is Clomiphene used?
Reduces hirsutism and testosterone levels in PCOS, improved when sued w/ OCPs
Fertility aid in PCOS and infertility
What cosmetic therapies can be used for hirsutism?
What are the etiologies of gynecomastia?
Vaniqa cream- dec hair growth in 4-8wks
Physiologic Endocrine Dz Systemic Dz Neoplasms Meds- 59 total
What are the 4 physiological causes of gynecomastia?
Neonatal- transient and self resolving, due to high estrogen from pregnancy
Puberty- very tall/overweight boys, 60% of normal boys affected and self resolves in 1yr
Aging- seen w/ dec testosterone and weight gain, increased SHBG reduces free testosterone
Obesity- inc fat increases aromatse activity converting testosterone into estradiol (usually pseudo-gynecomastia)
What’s the difference between glandular and fatty gynecomastia?
What are the 5 etiologies of gynecomastia?
Glandular- tender
Fatty- non-tender
Physiologic Endocrine dz Neoplasm Systemic Dz Meds- 59 of them
What are the endocrine abnormalities that can cause gynecomastia?
What are the 3 systemic diseases that can cause gynecomastia?
Androgen insensitivity
Hypogonadism- Klinefelters
Hyperprolactinemia
Hyperthyroidism
Liver, renal dz
Spinal cord injury
What types of neoplasms can cause gynecomastia?
Steroid producing (estrogen)
hCG producing in lung, teste, hepatocellular, gastric carcinoma
Breast Ca- unilateral, irregular, painless, firm/fixed to underlying tissue
At a BioChem level, what causes gynecomastia?
Male breast cancer has a higher incidence rate in ? PT population?
Testosterone converted by aromatase into estradiol in adipose/extra-gonadal tissues
Klinefelters
What are 5 meds that can cause gynecomastia?
Spironolactone*- only common
Cimetidine
Ketoconazole
5a-reducatse inhibitors for BPH (Proscar, Avodart)
Exogenous steroid/androgen
HIV Tx w/ highly active antiretroviral therapy- especially Efacirenz or Didanosine
FSH stimulates ? process
LH stimulates ? process?
Gynecomastia presents as ? development while CA presents as ?
F- binds to Sertoli cells in seminiferous tubules to stimulate spermatogenesis
L- Leydig cells in testes to produce testosterone
G: concentric
C: ecentric, off to side
Gynecomastia is usually located ? when compared to where female breast cancer usually shows
How is gynecomastia Dx?
CA- supper lateral quad, gynecomastia- under nipple
Clinically
DDx of gynecomastia
Unilateral, Painless, Eccentric= Breast Ca, Lipoma, Neurofibroma
Bilateral, Painless= obesity, pseudogynecomasti
What labs are ordered for gynecomastia?
How is Klinefeltors Dx’d?
PRL, hCG, LH, testosterone, estradiol, TSH
Persistent gynecomastia w/out identifiable etiology
If a male has one of what 5 conditions, no work up is needed for gyneocmastia
Hypogonadism Liver Dz Testicular tumor Hyperthyroid Medication Hx
Lab results for gynecomastia
PRL and b-hCG
High PRL= hyperprolactinemia, pituitary lesion
High b-hCG= malignancy in liver, lung, testis
Testosterone/LH
Low T, High LH= primary hypogonadism
Low T, low LH= secondary hypogonadism
Estradiol
Inc in testicular tumors, liver dz, obesity, inc levels of b=hCG
TSH/FT4
Hyperthyroid inc SHBG, dec free testosterone
What imaging is needed for gynecomastia PTs?
Mammography, CXR
US for suspicious mammogram findings
Needle biopsy w/ cytology for suspicious unilateral/asymmetric enlargement to distinguish tumor from mastitis
How is pubertal gynecomastia Tx?
Observe, f/u Q6mon
Self resolving in 1-2yrs
Painful/Persistant: SERM (Ramoxifen, Faloxifene) better for glandular type Aromatase inhib (Anast/Letrozole)
How is hypogonadism related gynecomastia Tx?
This Tx can only occur after ?
Testosterone replacement, can worsen condition
Lab confirmed Dx
When is radiation therapy used for gynecomastia?
When is surgery used as a last resort?
Prostate CA + gynecomastia
Persistent and severe cases
Testosterone + aromatase= ?
Testosterone + 5a-reductase= ?
Estradiol- wolffian duct, brain, muscles, body hair, spermatogenesis, libido
5a-DHT- (masculine effects) External genitals,
Male body hair pattern
Temporal baldness
What are the three effects testosterone exerts?
Most important androgen in men is testosterone due to its impact on what non-endocrine organs?
1: Direct impact on androgen receptors
2: converted to estradiol/5a-DHT
3: non-endocrine organ impact
Muscle, adipose, bone, metabolism, brain function
Define Hypogonadism
What are the two types?
Deficient testosterone secretion from testes (low testosterone)
P: failure of testes to produce (hypergonadotropic hypo- high LH/FSH)
S: hypothalamus/pituitary failure to secrete gonadotropins
(hypogonad- low LH/FSH)
S/Sxs of hypogonadism
Hypogonadism can occur in what four time frames?
Low libido
ED, Fatigue, depression
Reduced endurance
Early prenatal
Late prenatal
Pre-puberty/puberty deficient
Post-puberty deficient
Define Early Prenatal Hypogonadism
Define Later Prenatal Hypogonadism
1st trimester T deficiency
Ambiguous genitalia
Pseudohermaphroditism- ovary or testi
True hermaphrodite: both
Deficiency of testosterone during 3rd trimester= micropenis, cryptochordism
Define Puberty Hypogonadism
Define Post-puberty hypogonadism
T deficiency at puberty
Dec strength/endurance
High voice/Dec hair
No sexual maturity or differentiation
Mid life lack of testosterone
Dec libido/energy/hair
Impotence/Wrinkles
Define Eunochoidal Proportions
What d/o is this normally seen in?
GH stims bones to grow out of proportion
Testosterone=closed plates
Arm span>height by +5cm
Crown-pubis
What 4 labs need to be drawn in the morning due to diurnal release?
What class drug is given to PTs w/ BPH?
GnRH, LH, FSH, Testosterone
5a-reductase inhibitor
How much of testosterone is bound and where is it bound to?
What part of life has a lower portion of free testosterone?
54-75% to SHBG
44% to albumin
Elderly, higher SHBG levels
What are the three main types of hypogonadism?
Primary- defect of testes (hypergonad hypogonad)
Low T, Inc LH/FSH
Secondary- defect of hypothalamus/pituitary
(hypo, hypo)
Low T, L or N LH/FSH (inappropriately normal)
Androgen defect/resistance
Inc T, Inc LH/FSH but effects of low T
What can cause Primary Hypogonadism?
Congenital: Klinefelter, Cryptochordism, Bilatearal anorchia
Acquired: age trauma infection(mumps/gonorrhea, leprosy) chemo/radiation
What is the most common congenital/chromosomal abnormality among males causing primary hypogonadism?
What are the comorbidities that come w/ this Dx?
Klinefelter 47XXY
Breast Ca DM CPDz Osteoporosis Varicose veins
What type of testicular development does Klinefelters cause and how is it Dx?
Firm, Fibrotic, Nontender, Small <2cm (N=>3.5)
High LH/FSH, low T
Keryotyping
How is Cryptorchidism Tx non-surgically?
If surgical Tx must be done for cryptorchidism, what age is it done at?
What are the associated risks w/ infertility?
hCG 1500mg x 3 days
Orchipexy @12-24mon
75% if bilateral
50% if unilateral
Define Vanishing Testicle Syndrome
Primary Hypogonadism. Bilateral Anorchia
Testes @ 14-16wks of gestation, empty scrotum
Normal growth/development until secondary sexual development fails to show at puberty
How is Bilateral Anorchia Dx?
How are all forms of Primary Hypognoadism Tx?
hCG stimulation test
+ test= no inc of testosterone
Crypto= inc of testosterone
Testosterone IM Q2-3wks Testosterone patches Topical application= most stable levels, transfer risk Buccal- Q12hrs PO from not avail in US Pellets- SQ administration
When does monitoring needs to be done for PTs taking testosterone?
What also needs to be checked every 6-12mon in these PTs?
Starting 14 days after initiation
Lipids, LFTs, CBC, PSA, DRE
Repeat Q6mon