Esophageal Atresia and Tracheoesophageal Fistula — MCQs
Anorectal anomalies are commonly associated with which of the following congenital anomalies?
Oesophageal atresia may occur as part of the VACTERL group of anomalies. What does "TE" refer to in this context?
Esophageal atresia may occur as a part of VACTERL group of anomalies. What does 'TE' stand for?
The most common congenital esophageal anomaly is which of the following?
Contrast material used in the diagnosis of esophageal atresia is:
All of the following are clinical features suggestive of tracheoesophageal fistula except -
What does the following radiograph from a double contrast esophagram represent?
Increased nuchal translucency at 14 weeks is most commonly associated with:
Which among the following is not used in post laryngectomy rehabilitation?
A child presents with high grade fever, inspiratory stridor and develops swallowing difficulty with drooling of saliva since last 4-6 hours. Which of the following treatment is recommended apart from general airway management?
Esophageal Atresia and Tracheoesophageal Fistula Indian Medical PG Practice Questions and MCQs
Question 1: Anorectal anomalies are commonly associated with which of the following congenital anomalies?
- A. Cardiac anomalies (Correct Answer)
- B. Duodenal atresia
- C. CNS malformations
- D. Abdominal wall defects
Explanation: ***Cardiac anomalies*** - **Cardiac anomalies** occur in approximately 30-50% of patients with **anorectal malformations**, making them the most commonly associated congenital anomaly. - These can range from simple septal defects to complex **congenital heart diseases**, often requiring surgical intervention. *Duodenal atresia* - **Duodenal atresia** is a common gastrointestinal anomaly but is less frequently associated with **anorectal malformations** compared to cardiac anomalies. - It typically presents with **bilious vomiting** and a "double bubble" sign on X-ray, which is not directly linked to the embryological development of the anorectum. *CNS malformations* - **CNS malformations**, such as **spinal dysraphism** (e.g., tethered cord, myelomeningocele), are certainly associated with **anorectal malformations**, particularly in the context of **VACTERL association**. - While significant, their incidence is generally lower than that of **cardiac anomalies** in this group. *Abdominal wall defects* - **Abdominal wall defects** like **omphalocele** or **gastroschisis** are distinct congenital anomalies with different embryological origins than **anorectal malformations**. - They are not considered a primary or most common associated anomaly with **anorectal malformations**.
Question 2: Oesophageal atresia may occur as part of the VACTERL group of anomalies. What does "TE" refer to in this context?
- A. Tetralogy of Fallot
- B. Thoracic empyema
- C. Tracheo-oesophageal fistula (Correct Answer)
- D. Talipes equinovarus
Explanation: ***Tracheo-oesophageal fistula*** - The acronym VACTERL stands for **V**ertebral defects, **A**nal atresia, **C**ardiac defects, **T**racheo-**E**sophageal fistula, **R**enal anomalies, and **L**imb defects. - Oesophageal atresia often coexists with a **tracheo-oesophageal fistula (TE)**, which explains the "TE" component in the VACTERL association. *Tetralogy of Fallot* - This is a type of **cardiac defect (C)**, which is covered by the "C" in VACTERL, not "TE." - It involves four specific heart abnormalities but doesn't directly relate to the **oesophageal or tracheal components**. *Thoracic empyema* - **Thoracic empyema** describes a collection of pus in the pleural space, usually due to infection, and is not a congenital anomaly. - It is an **acquired condition** and not part of the VACTERL association. *Talipes equinovarus* - This condition, also known as **clubfoot**, is a **limb defect (L)**. - While it is a recognized part of the VACTERL association, it specifically relates to the "L" and not the "TE."
Question 3: Esophageal atresia may occur as a part of VACTERL group of anomalies. What does 'TE' stand for?
- A. Tracheo-esophageal fistula (Correct Answer)
- B. Thoracic empyema
- C. Talipes equinovarus
- D. Tetralogy of Fallot
Explanation: ***Tracheo-esophageal fistula*** - The 'TE' in **VACTERL** stands for **Tracheo-Esophageal fistula**, which is a common congenital anomaly associated with esophageal atresia. - This condition involves an abnormal connection between the **trachea** and the esophagus, often leading to feeding difficulties and respiratory complications. *Thoracic empyema* - **Thoracic empyema** is an accumulation of pus in the pleural cavity, typically a complication of pneumonia or chest trauma. - It is an acquired condition and not a congenital anomaly part of the **VACTERL** association. *Talipes equinovarus* - **Talipes equinovarus**, also known as **clubfoot**, is a congenital deformity of the foot. - While it is a congenital anomaly, it is represented by the 'L' (Limb defects) in the **VACTERL** association, not 'TE'. *Tetralogy of Fallot* - **Tetralogy of Fallot** is a complex congenital heart defect involving four specific abnormalities. - This condition is represented by the 'C' (Cardiac defects) in the **VACTERL** association, as it's a type of cardiac anomaly.
Question 4: The most common congenital esophageal anomaly is which of the following?
- A. Congenital esophageal stenosis
- B. Esophageal atresia (Correct Answer)
- C. Congenital web
- D. Esophageal duplication cyst
Explanation: ***Esophageal atresia*** - This is the **most common congenital esophageal anomaly**, occurring in approximately 1 in 3,000-4,500 live births. - Most commonly presents as **esophageal atresia with distal tracheoesophageal fistula (TEF)** - the classic Type C variant (85-90% of cases). - Neonates present with excessive salivation, **inability to swallow**, choking with first feeding, and inability to pass a nasogastric tube beyond 10-12 cm. - Associated with **VACTERL** anomalies (Vertebral, Anorectal, Cardiac, Tracheoesophageal, Renal, Limb). *Congenital esophageal stenosis* - This is a **rare congenital narrowing** of the esophagus, far less common than esophageal atresia. - May be caused by tracheobronchial remnants, fibromuscular hypertrophy, or membranous diaphragm. - Typically presents later in infancy with **progressive dysphagia** when solid foods are introduced. *Congenital web* - A congenital web is a **thin mucosal membrane** that partially obstructs the esophageal lumen. - Much less common than esophageal atresia and usually presents with **intermittent dysphagia**. - May be asymptomatic until childhood or even adulthood depending on the degree of obstruction. *Esophageal duplication cyst* - A rare congenital anomaly consisting of a **fluid-filled cystic structure** adjacent to or within the esophageal wall. - Shares a common muscular wall with the esophagus and is lined by gastrointestinal epithelium. - May present with dysphagia, respiratory symptoms, or remain asymptomatic until discovered incidentally.
Question 5: Contrast material used in the diagnosis of esophageal atresia is:
- A. Conray
- B. Gastrograffin (Correct Answer)
- C. Barium swallow
- D. Iohexol (Omnipaque)
Explanation: ***Gastrograffin*** - **Gastrograffin** (diatrizoate meglumine) is the **traditional standard** water-soluble iodinated contrast agent for diagnosing **esophageal atresia**. - Historically preferred because if aspirated, it is absorbed from the lungs, unlike barium which causes severe pneumonitis. - **Note**: Modern practice increasingly favors **non-ionic, low-osmolar agents** (like Iohexol) due to Gastrograffin's hyperosmolarity, but **Gastrograffin remains the textbook answer** for most competitive exams. *Conray* - **Conray** (iothalamate meglumine) is an ionic iodinated contrast agent, primarily used for angiography and excretory urography. - Not typically recommended for esophageal studies in neonates with suspected **atresia**, due to its higher osmolality and potential complications if aspirated. *Barium swallow* - **Barium sulfate** is **absolutely contraindicated** in cases of suspected **esophageal atresia** or perforation. - If aspirated into the lungs, **barium** causes severe **chemical pneumonitis**, granuloma formation, and potentially **ARDS**, with significant morbidity and mortality. - Barium is not absorbed and remains in lung tissue, causing chronic inflammation. *Iohexol (Omnipaque)* - **Iohexol (Omnipaque)** is a **non-ionic, low-osmolar contrast agent** that is actually **safer than Gastrograffin** if aspirated. - In modern practice, non-ionic agents like Iohexol are increasingly preferred for esophageal studies due to lower osmolality and reduced risk of pulmonary edema. - However, for **exam purposes**, **Gastrograffin** remains the standard answer based on traditional teaching and most Indian textbooks.
Question 6: All of the following are clinical features suggestive of tracheoesophageal fistula except -
- A. Fever (Correct Answer)
- B. Choking and Coughing
- C. Regurgitation
- D. Cyanosis
Explanation: ***Fever*** - **Fever is NOT a primary clinical feature** of tracheoesophageal fistula (TEF) itself. - While fever might occur as a **complication** if aspiration pneumonia develops, it is not a direct presenting sign of TEF. - The classic presentation of TEF occurs in **newborns within hours of birth** and involves the "3 Cs" - not fever. *Choking and Coughing* - Part of the classic **"3 Cs" triad** (Choking, Coughing, Cyanosis) of TEF presentation. - Occurs during the **first feeding attempt** when milk enters the trachea through the abnormal fistulous connection. - This is a **cardinal diagnostic feature** that should immediately raise suspicion for TEF. *Regurgitation* - **Immediate regurgitation** of feeds is characteristic, especially in TEF with esophageal atresia (most common type - Type C). - The **blind-ending proximal esophageal pouch** prevents normal passage of saliva and feeds, causing regurgitation. - Often accompanied by **excessive drooling and frothy secretions** from the mouth and nose. *Cyanosis* - The third component of the **"3 Cs" triad** and a key clinical feature. - Results from **aspiration of feeds or saliva** into the trachea and lungs, causing acute respiratory distress. - May also occur from **laryngospasm** as a protective reflex when fluid enters the airway.
Question 7: What does the following radiograph from a double contrast esophagram represent?
- A. Esophageal atresia
- B. Esophageal stenosis
- C. Feline esophagus (Correct Answer)
- D. Tracheoesophageal fistula
Explanation: **Feline esophagus (Correct)** - The image displays a characteristic transverse striation pattern along the esophageal mucosa, resembling the rings seen in the esophagus of a cat (hence "feline esophagus") - This finding is often associated with gastroesophageal reflux disease (GERD) or eosinophilic esophagitis, representing mucosal edema and inflammation - Also known as "ringed esophagus" or "corrugated esophagus" *Esophageal atresia (Incorrect)* - This is a congenital condition where the esophagus ends in a blind pouch, making it impossible for food to reach the stomach - The radiograph clearly shows a patent esophagus with contrast flowing through it, which rules out atresia *Esophageal stenosis (Incorrect)* - Esophageal stenosis refers to a narrowing of the esophagus, which would appear as a constricted segment on a barium swallow - While there is some irregularity, the primary pattern seen is transverse rings, not a focal, sustained narrowing typical of stenosis *Tracheoesophageal fistula (Incorrect)* - A tracheoesophageal fistula is an abnormal connection between the esophagus and the trachea - This would typically present with aspiration of contrast into the trachea or lungs, which is not evident in the provided image
Question 8: Increased nuchal translucency at 14 weeks is most commonly associated with:
- A. Down syndrome (Correct Answer)
- B. Esophageal atresia
- C. Trisomy 18
- D. Foregut duplication cyst
Explanation: ***Down syndrome*** - **Increased nuchal translucency (NT)** in the first trimester is a significant marker for **chromosomal abnormalities**, with **Down syndrome (Trisomy 21)** being the most common. - This finding, especially at 14 weeks, indicates a higher risk, warranting further diagnostic testing like **chorionic villus sampling (CVS)** or **amniocentesis**. *Esophageal atresia* - This is a **structural anomaly** affecting the esophagus; it is typically identified by an **absent stomach bubble** or sometimes polyhydramnios on later ultrasound, not primarily by increased nuchal translucency. - While it can be associated with some chromosomal anomalies, **increased NT** is not its primary diagnostic marker. *Trisomy 18* - While **increased nuchal translucency** can be a feature of **Trisomy 18 (Edwards syndrome)**, it often presents with additional distinct anatomical findings such as choroid plexus cysts, clenched hands, and a small jaw. - Given the sole finding of increased NT, **Down syndrome** is generally a more common association, although this would still raise suspicion for other aneuploidies including Trisomy 18. *Foregut duplication cyst* - This is a **rare congenital malformation** of the digestive tract, typically appearing as a fluid-filled mass. - It is a **structural anomaly** and is not directly indicated by **increased nuchal translucency**.
Question 9: Which among the following is not used in post laryngectomy rehabilitation?
- A. Tracheostomy tube (Correct Answer)
- B. Esophageal speech
- C. Tracheoesophageal puncture
- D. Electrolarynx
Explanation: ***Tracheostomy tube*** - Following total laryngectomy, the **trachea is permanently diverted** to form a permanent stoma in the neck for breathing. - In the context of **post-laryngectomy rehabilitation**, the focus is on **voice restoration** methods rather than airway management devices. - While laryngectomy tubes or stoma buttons may be used temporarily for **stoma care** (preventing stenosis, maintaining patency), traditional **tracheostomy tubes are not part of voice rehabilitation** protocols. - The patient breathes directly through the permanent stoma, and rehabilitation centers on restoring communication ability. *Esophageal speech* - **Esophageal speech** is a voice rehabilitation method where air is injected into the esophagus and then expelled, vibrating the pharyngoesophageal segment to produce sound. - It requires no external devices, only extensive training, and can provide functional voice for communication. - This is one of the **three main voice restoration options** after laryngectomy. *Tracheoesophageal puncture* - **Tracheoesophageal puncture (TEP)** with voice prosthesis is the **gold standard** for voice rehabilitation post-laryngectomy. - A small fistula is created between trachea and esophagus, and a one-way valve (voice prosthesis) is inserted. - Air from the lungs is diverted through the prosthesis into the esophagus, vibrating the pharyngoesophageal segment to produce speech. - Provides the **most natural-sounding voice** among rehabilitation options. *Electrolarynx* - An **electrolarynx** is an external, battery-operated device held against the neck or placed intraorally that generates vibrations. - The vibrations are articulated by the mouth and tongue to produce speech. - Provides **immediate communication** post-laryngectomy, though the voice quality is mechanical or robotic.
Question 10: A child presents with high grade fever, inspiratory stridor and develops swallowing difficulty with drooling of saliva since last 4-6 hours. Which of the following treatment is recommended apart from general airway management?
- A. Corticosteroids
- B. Nebulized racemic epinephrine
- C. Anti-diphtheria toxin
- D. IV ceftriaxone (Correct Answer)
Explanation: ***IV ceftriaxone*** - The clinical presentation of **high-grade fever**, **inspiratory stridor**, **drooling of saliva**, and **difficulty swallowing** is classic for **acute epiglottitis**, a life-threatening emergency. - Apart from **securing the airway** (which is the most critical step), **IV antibiotics** are the definitive treatment for the underlying bacterial infection. - **IV ceftriaxone** (or cefotaxime) is the first-line antibiotic for acute epiglottitis, covering *Haemophilus influenzae type b* (most common), *Streptococcus pneumoniae*, and *Streptococcus pyogenes*. - Antibiotics should be started immediately after airway is secured to treat the bacterial infection causing the epiglottic inflammation. *Nebulized racemic epinephrine* - **Racemic epinephrine** is used for **croup (viral laryngotracheobronchitis)**, NOT for acute epiglottitis. - In epiglottitis, any procedure that agitates the child (including nebulization) can precipitate **complete airway obstruction**. - The key management principle in epiglottitis is to **keep the child calm** and avoid any intervention until the airway is secured in a controlled setting (operating room). *Corticosteroids* - **Corticosteroids** are beneficial in **croup** to reduce subglottic edema, but their role in acute epiglottitis is **not established** and not part of standard management. - The primary treatment for epiglottitis is **airway management** and **antibiotics**, not anti-inflammatory therapy. *Anti-diphtheria toxin* - **Diphtheria antitoxin** is specific for **diphtheria**, which presents with a **grayish-white pseudomembrane** on the tonsils and pharynx, along with a **"bull neck"** appearance. - The acute presentation with drooling and stridor in this case is typical of **epiglottitis**, not diphtheria. - Diphtheria has a more **gradual onset** compared to the rapid progression (4-6 hours) seen in epiglottitis.
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