Test on Pierre Robin Sequence: Clinical Management

Question 1: The palatine raphe forms from the fusion of the lateral palatine processes.

A. Yes

B. No

Explanation: Figure 38.4 illustrates the embryology of the palate, showing the 'Fused lateral palatine process' eventually forming the 'Palatine raphe' in the developed palate.

Question 2: According to the provided study materials, what is the primary embryological event that contributes to the development of a cleft palate in Pierre Robin sequence?

A. The lateral palatine processes becoming fixed in a horizontal position.

B. The retropositioned tongue blocking the movement of the lateral palatine processes.

C. A mutation in the TCOF1 gene affecting palate fusion.

D. Abnormal development of the nasal septum preventing palate elevation.

Explanation: The study materials state that 'The retropositioned tongue blocks the movement of the lateral palatine processes from a vertical to horizontal position,' which is crucial for understanding the cleft palate in Pierre Robin sequence.

Question 3: Sher and colleagues described four types of obstruction seen via flexible nasopharyngoscopy in children with Pierre Robin sequence.

A. Yes

B. No

Explanation: Sher and colleagues described four types of obstruction seen via flexible nasopharyngoscopy in 53 children with Pierre Robin sequence.

Question 4: According to the study materials, what is the initial management step for airway obstruction in a neonate with suspected Pierre Robin sequence (PRS) during resuscitation, following the American Academy of Pediatrics Neonatal Resuscitation Program guidelines?

A. Direct endotracheal intubation

B. Immediate insertion of a laryngeal mask airway (LMA)

C. Prone positioning and supplemental oxygen

D. Performing an emergent tracheotomy

Explanation: The study materials state that for a child suspected of having PRS, resuscitation according to the American Academy of Pediatrics Neonatal Resuscitation Program begins with prone positioning and supplemental oxygen. Other interventions like LMA, nasopharyngeal airway, endotracheal intubation, or tracheotomy are considered if initial steps fail.

Question 5: The LeBlanc and Golding-Kushner study found that children who underwent tongue lip adhesion experienced significant long-term negative effects on speech development.

A. Yes

B. No

Explanation: The LeBlanc and Golding-Kushner study found that children who underwent TLA had minimal long-term effects on speech development.