Cleft Lip And Palate
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Questions and Answers
- 1.
What ethnic group has the highest incidence of cleft lip/palate?
- A.
Blacks
- B.
Whites
- C.
Asians
- D.
Native Americans
Correct Answer
D. Native AmericansExplanation
The incidence of CL(P) varies by ethnic group, with the highest frequency occurring in Native Americans, about 3.6 of 1,000 births (1), followed by Asians with 2.1 of 1,000 births, whites with 1 of 1,000, and blacks with 0.41 of 1,000 birthsRate this question:
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- 2.
In what phase of development of the normal lip and palate is the palate formed?
- A.
First
- B.
Second
Correct Answer
B. SecondExplanation
Normal embryologic development of the lip and palate can be considered to occur in two related phases: the first phase (beginning at 4 to 5 weeks' gestation), involving the development of the upper lip, nose, and primary palate or premaxilla (the portion of the bony palate anterior to the incisive foramen containing the four upper incisors), and the second phase (beginning at 8 to 9 weeks' gestation), involving the development of the secondary palate (the hard and soft palate posterior to the incisive foramen).Rate this question:
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- 3.
When does the fusion and development of the primary palate occur?
- A.
10 days
- B.
20 days
- C.
30 days
- D.
40 days
Correct Answer
C. 30 daysExplanation
Differences in the gestational time of development and fusion of the primary palate (about 30 days) and secondary palate (about 50 days) are reflected in the separate genetic inheritance patterns.Rate this question:
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- 4.
When does the fusion and development of the secondary palate occur?
- A.
20 days
- B.
30 days
- C.
40 days
- D.
50 days
Correct Answer
D. 50 daysExplanation
The fusion and development of the secondary palate occur at around 50 days. This is the stage when the two halves of the palate come together and fuse, forming the roof of the mouth. It is an important developmental milestone in the formation of the oral cavity and is crucial for proper feeding and speech development.Rate this question:
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- 5.
At what age would you do a lip adhesion on a patient with cleft lip?
- A.
1 week
- B.
3 weeks
- C.
5 weeks
- D.
7 weeks
Correct Answer
B. 3 weeksExplanation
Lip adhesion, if indicated, is the initial procedure and it is performed at 2 to 4 weeks of ageRate this question:
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- 6.
At what age would you perform definitive lip repair following lip adhesion?
- A.
4-6 months
- B.
8-10 months
- C.
10-12 months
- D.
>12 months
Correct Answer
A. 4-6 monthsExplanation
Definitive lip repair follows the adhesion at 4 to 6 months of age, which allows the scar to mature.Rate this question:
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- 7.
What does the ‘rule of tens’ not include:
- A.
10 weeks
- B.
10 pounds
- C.
10 Hct
- D.
10 Hgb
Correct Answer
C. 10 HctExplanation
In the United States, most surgeons follow the “rule of tens”: lip repair is performed when the infant is at least 10 weeks old, weighs 10 pounds, and has a hemoglobin of 10 g.Rate this question:
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- 8.
When does cleft palate repair typically occur?
- A.
4-8 months
- B.
8-12 months
- C.
12-16 months
- D.
20-24 months
Correct Answer
B. 8-12 monthsExplanation
Typically, cleft palate repair occurs between the ages of 8 and 12 months.Rate this question:
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- 9.
What is the most common technique used for unilateral cleft lip repair?
- A.
Randall
- B.
Tennison
- C.
Straight-line
- D.
Millard
Correct Answer
D. MillardExplanation
For unilateral lip repair, the rotation-advancement method (as described by Millard) and various modifications, is probably the most commonly used technique in the United States and abroad.Rate this question:
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- 10.
In cleft palate repair, what muscle sling repair is important for improved velopharyngeal function?
- A.
Levator veli palatini
- B.
Tensor veli palatine
- C.
Salpingopharyngeus
- D.
Palatopharyngeus
Correct Answer
A. Levator veli palatiniExplanation
Regardless of the procedure used, attention should be directed to approximation and repair of the levator veli palatini muscle sling (known as intravelar veloplasty) for improved velopharyngeal function.Rate this question:
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Current Version
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Oct 13, 2023Quiz Edited by
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Jan 06, 2010Quiz Created by
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