Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
114 Cards in this Set
- Front
- Back
Common congenital malformations
|
Heart defects
Hypospadias Cleft lip Congenital hip dislocation Spina bifida Anencephaly Pyloric stenosis |
|
Congenital malformation associated with projectile vomitting
|
Pyloric stenosis
|
|
Right to left shunts (early cyanosis) blue babies - name 3 causes
|
3 T's
Tetralogy of Fallot Transposition of great vessels Truncus arteriosus |
|
Child may squat to increase venous return - what type of shunt?
|
Right to left
|
|
Left to right shunts (late cyanosis) - blue kids - name 3 causes
|
VSD
ASD PDA |
|
Close with indomethacin
|
PDA
|
|
Most common congenital cardiac anomaly
|
VSD
|
|
Loud S1, wide, split, fixed S2
|
ASD
|
|
Uncorrected VSD, ASD or PDA leads to progressive pulmonary hypertension. As pulmonary resistance increases shunt changes from Lto R to R to L which causes late cyanosis (clubbing and polycythemia)
Diagnosis |
Eisenmengers syndrome
|
|
Name 4 parts of tetralogy of Fallot
|
PROVe
Pulmonary stenosis Right ventricular hypertrophy Overriding aorta VSD |
|
What do you see on xray in patient with tetralogy of Fallot
|
Boot shaped heart due to RVH
|
|
Cause of tetralogy of Fallot
|
Anterosuperior displacement of infundibular septum
|
|
Patient suffers from "cyanotic spells", x ray shows boot shaped heart - diagnosis?
|
Tetraology of Fallot
|
|
Aorta leaves RV (anterior) and pulmonary trunk leaves LV (posterior) --> separation of systemic and pulmonary circulation. Not compatible with life unless a shunt is present to allow adequate mixing of blood (VSD, PDA or patent foramen ovale)
Diagnosis? |
Transposition of great vessels
|
|
Cause of transposition of great vessels
|
Failure of aorticopulmonary septum to spiral
|
|
Prognosis for transposition of great vessels
|
Without surgical correction infants die within 1st month of life
|
|
In infantile type of coarctation of aorta - aortic stenosis is proximal or distal to insertion of ductus arteriosus?
|
Proximal (preductal)
INfantile = IN close to heart |
|
In adult type of coarctation of aorta stenosis is distal or proximal to ductus arteriosus
|
Distal (postductal)
ADult= Distal to Ductus |
|
This condition is associated with notching of ribs, hypertension in upper extremities and weak pulses in lower extremities
|
Coarctation of aorta
|
|
What should you check in physical exam if suspect coarctation of aorta
|
Femoral pulses
|
|
Male to female ratio for coarctation of aort
|
3:1
|
|
In fetal period shunt is right to left (normal). In neonatal period, lung resistance decreases and shunt becomes left to right with subsequent RVH and failure (abnormal). Associated with a continuous "machine like" murmur - Name condition
|
Patent ductus arteriosus
|
|
Patency of ductus arteriosus is maintained by?
|
PGE synthesis and low O2 tension
|
|
What drug is used to close PDA
|
Indomethacin
|
|
Name drug used to keep PDA open which may be necessary to sustain life in conditions such as transposition of great vessels
|
PGE
|
|
Name defect associated with 22q11 syndromes
|
Truncus arteriosus, tetralogy of Fallot
|
|
Name congenital cardiac defect associated with Down syndrome
|
ASD
VSD |
|
Name congenital cardiac defect associated with congenital rubella
|
Septal defects
PDA |
|
Name congenital cardiac defect associated with Turners syndrome
|
Coarctation of aorta
|
|
Name congenital cardiac defect associated with offspring of a diabetic mother
|
Transposition of great vessels
|
|
Most common chromosomal disorder and cause of congenital mental retardation
|
Down syndrome
|
|
GI defect associated with Downs
|
Duodenal atresia
|
|
Which cancer is in increased risk for patients with Downs
|
ALL
|
|
Most common cardiac malformation in patients with Downs - cause?
|
Septum primum type ASD due to endocardial cushion defects
|
|
Decreased levels of alpha fetoprotein
Increased beta HCG Increased nuchal translucency - diagnosis |
Downs
|
|
Mental retardation, flat facial profile, prominent epicantal folds, simian crease - diagnosis?
|
Downs trisomy 21
|
|
95% of Downs are caused by _
4% ? 1% |
Nondisjunction
4% - Robertsonian translocation 1% - mosaicism |
|
Edwards syndrome is also called?
|
Trisomy 18 (Election age)
|
|
Baby is born with severe mental retardation, rocker bottom feet, low set ears, micrognathia (small jaw), congenital heart disease, clenched hands and prominent occiput- diagnosis + prognosis
|
Edwards syndrome - trisomy 18
Death within 1 year |
|
Pataus syndrome is also called
|
Trisomy 13
|
|
Baby is born with severe mental retardation, microphthalmia, cleft lip/palate, abnormal forebrain structures, polydactyly, congenital heart disease - diagnosis + prognosis
|
Pataus trisomy 13
Death within 1 year |
|
Klinefelters genotype
|
XXY
|
|
Testicular atrophy, eunuchoid body shape, tall, long extremities, gynecomastia, female hair distribution, presence of inactivated X chromosome (Barr body)
|
Klinefelter syndrome
|
|
Common cause of hypogonadism see in infertility workup
|
Klinefelter syndrome
|
|
Genotype for Turners syndrome
|
XO
|
|
Short stature, ovarian dysgenesis (streak ovary), webbing of neck, coarctation of aorta, no Barr body
|
Turners
|
|
Most common cause of primary amenorrhea
|
Turners
|
|
Phenotypically normal, very tall, severe acne, antisocial behavior, observed with increased freuency among inmates of penal institutions
|
Double Y males XYY
|
|
What type of mutation is Duschennes
|
Frameshift mutation --> deletion of dystrophin gene --> accelerated muscle breakdown
|
|
Inheritance for Duschennes
|
X linked
|
|
Where does weakness begins in patients with Duschennes
|
Pelvic girdle and moves superiorly
|
|
5 year old male presents with pseudohypertrophy of calf muscles and cardiac myopathy - name condition and cause
|
Duschennes - replacement of muscle by fibrofatty tissue
|
|
7 year old male requires assistance of the upper extremities to stand up (proximal lower limb weakness) - name phenomenon and condition
|
Gowers maneuver - Duschennes muscular dystrophy
|
|
How do you diagnose muscular dystrophies
|
By increased CPK and muscle biopsy
|
|
Disagreement between phenotypic (external genitalia) and gonadal (testes vs ovaries) sex
|
Pseudohermaphroditism
|
|
Ovaries are present but external genitalia are virilized or ambiguous - name condition + cause
|
Female pseudohermaphroditism
Due to excessive and inappropriate exposure to androgenic steroids during early gestation (congenital adrenal hyperplasia or exogenous administration of androgens during pregnancy) |
|
Testes present but external genitalia are female or ambiguous - name condition + cause
|
Male pseudohermaphroditism - androgen insensitivity syndrome (testicular feminization)
|
|
Both ovary and testicular tissue present, ambiguous genitalia - very rare
Possible genotypes? |
True hermaphrodite
46 XX or 47 XXY |
|
Defect in androgen receptor resulting in normal appearing female, female external genitalia with rudimentary vagina, uterus and uterine tubes are absent. develops testicular tissue(often found in labia majora, surgically removed to prevent malignancy)
Name condition + genotype + what happens to levels of estrogen, testosterone and LH |
Androgen insensitivity syndrome
46 XY Levels of testosterone, estrogen and LH are all high |
|
Unale to convert testosterone to DHT, ambiguous genitalia until puberty, when increased testosterone causes masculinization of genitalia
Name condition + what happens to levels of estrogen, testosterone and LH |
5 alpha-reductase defficiency
Testosterone and estrogen levels are normal, LH normal or increased |
|
Congenital deletion of short arm of chromosome 5 leads to _
|
Cri-du-chat syndrome
|
|
Microcephaly, severe mental retardation, high pitched crying/meowing, epicanthal folds, cardiac abnormalities
|
Cri-du-chat syndrome
|
|
2nd most common cause of genetic mental retardation
|
Fragile X
|
|
X linked defect affecting methylation and expression of FMR1 gene, associated with macro-orchidism (enlarged testes), long face with large jaw, large everted ears and autism
|
Fragile X
|
|
What type of mutation is in Fragile X
|
Triple repeat disorder (CGG) that may show genetic anticipation (germlike expansion in females)
|
|
Cleft palate
Abnormal facies Thymic aplasia Cardiac defects Hypocalcemia 2 types of disorders |
22q11 syndromes - DiGeorge syndrome (thymic, parathyroid and cardiac defects) or velocardiofacial syndrome (palate, facial and cardiac defects)
|
|
Adult polycystic kidney disease - unilateral or bilateral
|
ALWAYS bilateral
|
|
Patient presents with pain, hematuria, hypertension, progressive renal failure, 90% of mutations are due to mutation in APKD1 (chromosome 16)
|
Adult polycystic kidney disease - massive enlargement of kidneys due to multiple large cysts
|
|
Name conditions associated with adult polycystic kidney disease
|
Polycystic liver disease
BERRY ANEURYSMS Mitral valve prolapse |
|
What is the inheritance for adult form of polycystic kidney disease?
juvenile? |
Adult - autosomal dominant
Juvenile - autosomal recessive |
|
Patient has high cholesterol (heterozygotes 300, homozygotes - rare- 700), severe atherosclerotic disease early in life and tendon xanthomas (classically in Achilles tendon), MI may develop before age 20
Name disease and cause |
Familial hypercholesterolemia (hyperlipidemia type IIa)
Elevated LDL owing to defective or absent LDL receptor |
|
Cause of Marfans disease
|
Fibrillin gene mutation -> connective tissue disorders
|
|
Skeletal abnormalities in Marfans syndrome
|
Tall with long extremities, hyperextensive joints, and long, tapering fingers and toes
|
|
Cardiovascular abnormalities in Marfans syndrome
|
Cystic medial necrosis of aorta --> aortic incometence and dissecting aortic aneurysms
Floppy mitral valve |
|
Occular abnormality in Marfans syndrome
|
Subluxation of the lens
|
|
Findings in neurofibromatosis type I (von Riecklinghausen disease)
|
Cafe-au-lait spots
Neural tumors Lisch nodules (pigmented iris hamartomas) Also marked by skeletal disorders (scoliosis) and increased tumor susceptibility |
|
Gene coding for NFT type I (von Riecklinghausen disease) located where?
|
Long arm of chromosome 17 (17 letters in Recklinghausen)
|
|
Gene coding for NFT type II is located where?
|
On chromosome 22
|
|
Patient presents with bilateral acoustic neuromas, optic pathway gliomas, juvenile cataracts - diagnosis?
|
Type II NFT
|
|
Findings: facial lesions (adenoma sebaceum), hypopigmented "ash leaf spots" on skin, cortical and retinal hamartomas, seizures, mental retardation, renal cysts, cardiac rhabdomyomas. Incomplete penetrance, variable presentation
|
Tuberous sclerosis
|
|
Findings: hemangioblastomas of retina/cerebellum/medulla, about half of affected individuals develop multiple bilateral renal cell carcinomas and other tumors - name disease, which gene affected and inheritance
|
Von Hippel Lindau disease
Deletion of VHL gene (tumor suppressor) on chromosome 3 (3p) Autosomal dominant |
|
Findings - depression, progressive dementia, choreiform movements, caudate atrophy and decreased levels of GABA and Ach in brain, symptoms manifest between 20 and 50 - name disorder, what type of disorder, inheritance + which chromosome affected
|
Huntingtons
Triplet repeat disorder Autosomal dominant Gene on chromosome 4 |
|
Colon becomes covered wiith adenomatous polyps after puberty. Progresses to cancer unless resected - name disease and chromosome on which deletion occurs+ inheritance pattern
|
Familial adenomatous polyposis - deletion on chromosome 5, autosomal dominant
|
|
Spheroid erythrocytes, hemolytic anemia, increased MCHC - name disease + what is curative + inheritance pattern
|
Hereditary spherocytosis
Splenectomy is curative Autosomal dominant |
|
Autosomal dominant cell-signalng defect of fibroblast growth factor (FGF) receptor 3. Results in dwarfism, short limbs but head and trunk are normal size - name disease
|
Achondroplasia
|
|
Inheritance pattern for cystic fibrosis
|
Autosomal recessive
|
|
Inheritance pattern for albinism
|
Autosomal recessive
|
|
Inheritance pattern for alpha1-antitrypsin defficiency
|
AR
|
|
Inheritance pattern for PKU
|
AR
|
|
Inheritance pattern for thalassemias and sickle cell anemias
|
AR
|
|
Inheritance pattern for glycogen storage disorders
|
AR
|
|
Inheritance pattern for mucopolysaccharidoses - ?
EXCEPT - > |
AR
EXCEPT Hunters |
|
Inheritance pattern for sphingolipidoses- ?
EXCEPT- ? |
AR
EXCEPT Fabrys |
|
Inheritance pattern for infant polycystic kidney disease
|
AR
|
|
Inheritance pattern for hemochromatosis
|
AR
|
|
Infertility in males with cystic fibrosis is due to?
|
Absence of vas deferens
|
|
Which vitamins are defficient in patients with cystic fibrosis
|
Fat soluble ADEK
|
|
Cystic fibrosis can present as _ in infancy
|
Failure to thrive
|
|
Most common lethal genetic disease of Caucasians
|
Cystic fibrosis
|
|
Treatment of cystic fibrosis
|
N-acetylcysteine to loosen mucous plugs
|
|
Cause of cystic fibrosis + how it presents
|
Autosomal recessive defect in CFTR gene on chromosome 7. Defective Cl channel -->secretion of abnormally thick mucus that plugs lungs, pancreas and liver --> recurrent pulmonary infections (Pseudomonas and S aureus), chronic bronchitis, bronchiectasis, pancreatic insufficiency (malabsorption and steatorrhea), meconium ileus in newborns
|
|
Diagnostic test for cystic fibrosis
|
Increased concentration of Cl ions in sweat
|
|
Associated with low folic acid intake during pregnancy, elevated alpha fetoprotein in amniotic fluid and maternal serum
|
Neural tube defects
|
|
Failure of bony spinal canal to close but no structural herniation, usually seen at lower vertebral levels
|
Spina bifida occulta
|
|
Meninges herniate through spinal canal defect
|
Meningocele
|
|
Meninges and spinal cord herniate through spinal canal defect
|
Meningomyelocele
|
|
Mechanism of fetal alcohol syndrome
|
Inhibition of cell migration
|
|
Newborn presents with postnatal developmental retardation, microcephaly, facial abnormalities, limb dislocation and heart and lung fistulas - probable cause?
|
Fetal alcohol syndrome
|
|
# 1 cause of congenital malformation in USA
|
Fetal alcohol syndrome
|
|
Increase in number of cells (reversible)
|
Hyperplasia
|
|
One adult cell type is replaced by another (reversible) - often secondary to irritation and/or environmental exposure
|
Metaplasia
|
|
Abnormal growth with loss cellular orientation, shape, and size in comparison to normal tissue maturation, commonly preneoplastic (reversible)
|
Dysplasia
|
|
Abnormal cells lacking differentiation, like primitive cells of same tissue, often equated with undifferentiated malignant neoplasms, tumor giant cells may be formed
|
Anaplasia
|
|
Clonal proliferation of cells that is uncontrolled and excessive
|
Neoplasia
|