OCANZ EXAM QUESTIONS WITH COMPLETE SOLUTIONS
GUARANTEED PASS BRAND NEW 2025
1. Who should get noninvasive prenatal testing (NIPT)?: All pregnant woman
>10 weeks as of 2020
- aka cell free fetal DNA testing
2. When should pregnant women be screened via chorionic villus
sampling?: 10-12 weeks
100% Dx
3. When should Quad screens be performed in pregnancy and what is
included in the screening?: 15-20 weeks
T21 & T18
Neural Tube Defects
spina bifida
Quad Screen:
- Alpha-fetoprotein (AFP)
- Human Chorionic gonadotropin (hCG)
- Estriol
- Inhibin A
4. When is amniocentesis performed?: 16-22 weeks 100% Dx
5. When is a cordocentesis performed?: > 18 weeks gestation
6. When are the three trimesters of pregnancy?: First= 1-12 weeks
Second= 13-24 weeks
Third= 25-36 weeks
7. Which disorder of sexual development is most common?: Klinefelter
Syndrome 47, XXY
, 8. Which disorder of sexual development is characterized by short stature,
webbed neck, broad chest, and coarctation of the aorta?: Turner's
syndrome
45, X
also gonadal dysgenesis, renal and cardiac anomalies
9. Which chromosome is involved in Klinefelters Syndrome?: 47, XXY
affects males
10. Which chromosome is involved in Turner's Syndrome?: 45, X
affects females
11. Which disorder of sexual development is characterized by less hair, tall,
and small testes?: Klinefelter Syndrome
- also arachnodactyly and hypospadias
- gynecomastia
- small, firm, atrophic testes
12. Which disorder of sexual development has a higher prevalence in
males with learning difficulties?: Klinefelter Syndrome
hypotonia and speech delays early on
13. T/F It is estimated that having Klinefelter Syndrome decreases life
expectancy by 10-12 years.: True
14. Which DSD has a 15% risk of gonadoblastoma? Which variant?: Turner
Syndrome, 45,X/46XY mosaicism
* if Y chromosome is present, increased risk of gonadoblastoma
also can happen with Androgen Insensitivity Syndrome if testes aren't descended
(AIS)
15. What screening should patients with Turner's Syndrome get?: Renal and
cardiac anomalies
GUARANTEED PASS BRAND NEW 2025
1. Who should get noninvasive prenatal testing (NIPT)?: All pregnant woman
>10 weeks as of 2020
- aka cell free fetal DNA testing
2. When should pregnant women be screened via chorionic villus
sampling?: 10-12 weeks
100% Dx
3. When should Quad screens be performed in pregnancy and what is
included in the screening?: 15-20 weeks
T21 & T18
Neural Tube Defects
spina bifida
Quad Screen:
- Alpha-fetoprotein (AFP)
- Human Chorionic gonadotropin (hCG)
- Estriol
- Inhibin A
4. When is amniocentesis performed?: 16-22 weeks 100% Dx
5. When is a cordocentesis performed?: > 18 weeks gestation
6. When are the three trimesters of pregnancy?: First= 1-12 weeks
Second= 13-24 weeks
Third= 25-36 weeks
7. Which disorder of sexual development is most common?: Klinefelter
Syndrome 47, XXY
, 8. Which disorder of sexual development is characterized by short stature,
webbed neck, broad chest, and coarctation of the aorta?: Turner's
syndrome
45, X
also gonadal dysgenesis, renal and cardiac anomalies
9. Which chromosome is involved in Klinefelters Syndrome?: 47, XXY
affects males
10. Which chromosome is involved in Turner's Syndrome?: 45, X
affects females
11. Which disorder of sexual development is characterized by less hair, tall,
and small testes?: Klinefelter Syndrome
- also arachnodactyly and hypospadias
- gynecomastia
- small, firm, atrophic testes
12. Which disorder of sexual development has a higher prevalence in
males with learning difficulties?: Klinefelter Syndrome
hypotonia and speech delays early on
13. T/F It is estimated that having Klinefelter Syndrome decreases life
expectancy by 10-12 years.: True
14. Which DSD has a 15% risk of gonadoblastoma? Which variant?: Turner
Syndrome, 45,X/46XY mosaicism
* if Y chromosome is present, increased risk of gonadoblastoma
also can happen with Androgen Insensitivity Syndrome if testes aren't descended
(AIS)
15. What screening should patients with Turner's Syndrome get?: Renal and
cardiac anomalies
