Feeding assessment and paediatric dysphagia — formative SAQs

SAQ 1 — The child with cerebral palsy and a cough-free feed (20 marks, ~15 minutes)

A six-year-old with severe cerebral palsy is reviewed for faltering growth and three admissions with pneumonia over the past year. Her parents describe mealtimes lasting over an hour, food refusal and drooling, but no coughing or choking. A bedside feed observed by the speech-language therapist appears quiet and cough-free. [7]

Questions

1. Give the most likely unifying diagnosis and explain why the absence of coughing does not exclude it. (5 marks) [3]
2. Outline the clinical feeding evaluation and state its key limitation. (5 marks) [3]
3. Which instrumental test best visualises aspiration, and what does it show that the bedside cannot? (4 marks) [1]
4. Explain how the Eating and Drinking Ability Classification System helps here. (3 marks) [9]
5. Outline the multidisciplinary management and the role of enteral feeding. (3 marks) [7]

Model answer (must-hit)

1. The most likely unifying diagnosis is oropharyngeal dysphagia with chronic, predominantly silent, aspiration. The absence of coughing does not exclude it because the neurological injury that discoordinates the pharyngeal swallow also blunts the laryngeal cough reflex, so the child aspirates without any outward sign, presenting through the chest with recurrent pneumonia and through faltering growth rather than through mealtime choking. [3]
2. The clinical feeding evaluation plots growth, takes the mealtime history of duration, refusal, drooling and chest symptoms, inspects the oral structures and tone, and observes the child taking age-appropriate consistencies for a delayed pharyngeal trigger, multiple swallows, a wet voice and residue. Its key limitation is that it cannot reliably detect aspiration and cannot detect silent aspiration, because it cannot see the bolus below the vocal cords. [3]
3. The videofluoroscopic swallow study best visualises aspiration. It images the child swallowing barium of several consistencies under X-ray in real time, showing the timing and coordination of the oral and pharyngeal phases and directly visualising penetration, aspiration and residue, including aspiration that is clinically silent at the bedside. [1]
4. The Eating and Drinking Ability Classification System grades how safely and efficiently a child eats and drinks in everyday life on a five-level scale, and its higher levels track closely with aspiration risk, so it both communicates the severity and triages the child toward instrumental assessment and a more intensive feeding plan. [9]
5. The management is multidisciplinary, with the paediatrician, speech-language therapist, dietitian, occupational therapist and physiotherapist modifying texture on the IDDSI ladder, optimising posture, pace and utensils, treating reflux, and securing nutrition. Because oral intake is unsafe and insufficient, a gastrostomy is the appropriate long-term route, preserving any safe consistency for pleasure. [7]

SAQ 2 — The premature infant who desaturates with feeds (20 marks, ~15 minutes)

A six-week-old infant born at twenty-seven weeks is being established on oral feeds. With each bottle feed his oxygen saturation falls and he pauses breathing. He tires before finishing the expected volume. The neonatal team asks whether the swallow is safe. [12]

Questions

1. Explain the physiological basis of feeding difficulty in the premature infant. (5 marks) [12]
2. Outline the assessment of the swallow in the neonatal unit, including the role of fibreoptic endoscopic evaluation of swallowing. (5 marks) [4]
3. What are the immediate feeding-safety actions while the swallow is being evaluated? (4 marks) [1]
4. Distinguish penetration, aspiration and silent aspiration, and explain which is the danger here. (3 marks) [1]
5. Outline the plan for advancing oral feeding as the infant matures. (3 marks) [12]

Model answer (must-hit)

1. The premature infant must coordinate suck, swallow and breathe, an immature pattern that develops with postmenstrual age. Incoordination means the infant swallows and breathes at the wrong times, causing oxygen desaturation and apnoea with feeds, and the weak, fatiguing suck means the infant tires before taking the volume, so poor intake and unsafe breathing compound one another. [12]
2. The assessment combines the bedside clinical feeding evaluation of the suck-swallow-breathe pattern with fibreoptic endoscopic evaluation of swallowing, in which a thin flexible scope passed through the nose shows the pharyngeal and laryngeal anatomy, the pooling of residue, and penetration or aspiration. FEES can be performed at the cot side in the neonatal unit, repeated readily, and used with real milk without barium. [4]
3. The immediate actions are to pause or slow the oral feed, maintain oxygenation and airway protection, suction pooled feed and secretions, and secure hydration and nutrition by nasogastric tube while the swallow is formally evaluated, so that the infant is neither hypoxic nor underfed during the assessment. [1]
4. Penetration is feed entering the laryngeal vestibule above the vocal cords and clearing; aspiration is feed passing below the vocal cords into the trachea; silent aspiration is aspiration that draws no cough. Aspiration is the danger here, and because the premature infant's cough reflex is also immature it may be silent, presenting only as the desaturation and apnoea described. [1]
5. Oral feeding is advanced along a structured pathway as postmenstrual age and swallow coordination mature, graded by tolerance, saturation stability and weight gain, with non-oral feeding maintained alongside until full oral feeding is safe and sufficient. [12]