Multiple Gestations (Part 1) For Ob/GYN Quiz On 4/1/11

24 Questions | By Geekee68 | Last updated: Mar 20, 2022 | Total Attempts: 56

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1.

___________ refers to how many ova are fertilized and implant.
2.

___________ refers to the number of chorions or placentas.
3.

____________ refers to the number of amniotic sacs.
4.

Twins that arise from two separate ova, fertilized by separate sperm cells are called ____________ twins or ____________ twins.
5.

Dizygotic twins always have two ____________ and two ____________.
6.

Dizygotic twin pregnancies have the ___________ (most or least?) complications and account for approx. _____(#) percent of all twins.
7.

Some predisposing factors associated with dizygotic twinning include:
- A.
  
  Race
- B.
  
  Assisted reproduction (infertility agents)
- C.
  
  Paternal family history
- D.
  
  Recent cessation of long term oral birth control
- E.
  
  Maternal age (35-40)
- F.
  
  Maternal family history
- G.
  
  Multiparity
- H.
  
  Maternal history of twinning
- I.
  
  Paternal history of twinning
8.

The easiest time to differentiate monozygotic from dizygotic twins is ___________ ____________.
9.

Fraternal twins are identical twins.
- A.
  
  True
- B.
  
  False
10.

Fraternal twins can be same sex or opposite sex.
- A.
  
  True
- B.
  
  False
11.

Multiple gestations are associated with elevated ____________ levels.
12.

Twins that arise from a single ovum, fertilized by a single sperm are called ____________ twins or ____________ twins.
13.

Monozygotic twins can be same sex or opposite sex.
- A.
  
  True
- B.
  
  False
14.

The "most" common type of monozygotic twins that account for 70% of the monozygotic twins is:
- A.
  
  Dichorionic / diamniotic
- B.
  
  Monochorionic / diamniotic
- C.
  
  Monochorionic / monoamniotic
15.

The "most dangerous" type combination associated with twinning is:
- A.
  
  Monochorionic / monoamniotic
- B.
  
  Dichorionic / diamniotic
- C.
  
  Monochorionic / diamniotic
16.

Monozygotic twins account for _____(#) percent of all twins.
17.

Monozygotic twins are not hereditary. Assisted reproduction is the only predisposing factor.
- A.
  
  True
- B.
  
  False
18.

The __________ of __________ from the point of conception is what determines amnionicity and chorionicity.
19.

Dichorionic / Diamniotic: Zygote divides in the first ____(#) to ____(#) days.
20.

Monochorionic / Diamniotic: Zygote divides between day ____(#) to ____(#) post conception.
21.

Monochorionic / Monoamniotic: Zygote divides after day ____(#) resulting in 2 embryos, a single amnion, and a single chorion.
22.

One placenta has increased risk for ____________ complications due to shared circulation.
23.

The associated risks for multiple gestations include:
- A.
  
  Placental abruption
- B.
  
  IUGR
- C.
  
  Vasa previa
- D.
  
  Premature labor
- E.
  
  PROM
- F.
  
  Pregnancy induced hypertension, preeclampsia
24.

Sonographic protocol for examination of multiple gestations include:
- A.
  
  Serial ultrasound exams every 3 to 4 weeks to verify growth
- B.
  
  Document fetal heart rate
- C.
  
  Identify number of fetuses present
- D.
  
  Label presenting fetus
- E.
  
  Identify presence of membrane
- F.
  
  Determine number and location of placenta(s)
- G.
  
  Identify fetal lie in pregnancy
- H.
  
  Determine separation
- I.
  
  Determine gender: if different it's dizygotic
- J.
  
  Biometry of both fetuses, fetal survey of both fetuses