Cleft Lip And Palate

1. When does the fusion and development of the secondary palate occur?

20 days

30 days

40 days

50 days

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.

Explanation

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.

2. At what age would you perform definitive lip repair following lip adhesion?

4-6 months

8-10 months

10-12 months

>12 months

Definitive lip repair follows the adhesion at 4 to 6 months of age, which allows the scar to mature.

Explanation

Definitive lip repair follows the adhesion at 4 to 6 months of age, which allows the scar to mature.

3. In what phase of development of the normal lip and palate is the palate formed?

First

Second

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).

Explanation

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).

4. What does the ‘rule of tens’ not include:

10 weeks

10 pounds

10 Hct

10 Hgb

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.

Explanation

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.

5. What is the most common technique used for unilateral cleft lip repair?

Randall

Tennison

Straight-line

Millard

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.

Explanation

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.

6. When does the fusion and development of the primary palate occur?

10 days

20 days

30 days

40 days

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.

Explanation

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.

7. When does cleft palate repair typically occur?

4-8 months

8-12 months

12-16 months

20-24 months

Typically, cleft palate repair occurs between the ages of 8 and 12 months.

Explanation

Typically, cleft palate repair occurs between the ages of 8 and 12 months.

8. What ethnic group has the highest incidence of cleft lip/palate?

Blacks

Whites

Asians

Native Americans

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 births

Explanation

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 births

9. At what age would you do a lip adhesion on a patient with cleft lip?

1 week

3 weeks

5 weeks

7 weeks

Lip adhesion, if indicated, is the initial procedure and it is performed at 2 to 4 weeks of age

Explanation

Lip adhesion, if indicated, is the initial procedure and it is performed at 2 to 4 weeks of age

10. In cleft palate repair, what muscle sling repair is important for improved velopharyngeal function?

Levator veli palatini

Tensor veli palatine

Salpingopharyngeus

Palatopharyngeus

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.

Explanation

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.

ClEFT Lip And PALATe