Respiratory Diseases Practice Questions

Q: Most common sign of LRTI [Lower respiratory tract infection] in children is

Tachypnea. ***Tachypnea*** - **Tachypnea**, or abnormally rapid breathing, is the most common and earliest sign of a lower respiratory tract infection (LRTI) in children. - It reflects the body's attempt to compensate for impaired gas exchange due to lung inflammation or infection. *Chest indrawing* - **Chest indrawing** (or retractions) indicates increased work of breathing and is a sign of *severe* respiratory distress, rather than the most common initial sign. - While concerning, it suggests a more advanced stage of respiratory compromise. *Nasal flaring* - **Nasal flaring** is a sign of increased effort in breathing and suggests respiratory distress, but it is less common and often occurs later than tachypnea. - It is an attempt to reduce airway resistance by widening the nasal passages. *Failure to feed well* - **Failure to feed well** is a general sign of illness in infants and young children, often accompanying LRTI, but it is not specific to respiratory infection. - It can be a consequence of many illnesses and is not the primary indicator of respiratory compromise.

Q: Which of the following statements about croup is false?

Croup is caused by bacterial infections.. ***Croup is caused by bacterial infections.*** - Croup, or **laryngotracheobronchitis**, is predominantly caused by **viral infections**, most commonly **parainfluenza virus**. - While bacterial superinfection can occur, the primary etiology of croup is viral, affecting the upper airway. *Disease includes laryngitis and laryngotracheobronchitis.* - **Laryngitis** and **laryngotracheobronchitis** are indeed different forms or classifications of croup, reflecting the inflammation of the larynx, trachea, and bronchi. - Croup is a broad term that encompasses these inflammatory conditions of the upper airway, commonly seen in young children. *Brassy cough is a common presenting feature.* - A **brassy (barking) cough** is a hallmark symptom of croup, resulting from inflammation and narrowing of the subglottic region. - This distinctive cough is often accompanied by **stridor** due to upper airway obstruction. *Causes upper airway obstruction* - The inflammation and swelling of the **larynx** and **trachea** in croup lead to narrowing of the airway lumen, causing **upper airway obstruction**. - This obstruction is responsible for characteristic symptoms like **inspiratory stridor** and difficulty breathing.

Q: What is the appropriate management for a 3-year-old child presenting to the primary health center with fever and cough for 5 days, exhibiting chest indrawing?

Administer antibiotics and refer to tertiary care.. **Administer antibiotics and refer to tertiary care.** * **Chest indrawing** in a child with fever and cough indicates **severe pneumonia**, which requires prompt medical intervention. * Administering the first dose of **appropriate antibiotics** (e.g., amoxicillin) at the primary health center is crucial to stabilize the child before **urgent referral** to a tertiary care facility for advanced management. * *Prescribe antibiotics and schedule a follow-up.* * Simply prescribing antibiotics and scheduling a follow-up is inadequate for a child with **severe pneumonia** and **chest indrawing**, as their condition can rapidly deteriorate. * This approach delays access to specialized care, increasing the risk of complications and mortality in a severe case. * *Make an urgent referral to tertiary care.* * While **urgent referral** is necessary, it is important to initiate immediate treatment at the primary level by administering the first dose of antibiotics. * Delaying antibiotic administration until arrival at the tertiary center could worsen the child's condition. * *Administer antipyretics only.* * **Antipyretics** only address the fever symptom and do not treat the underlying **bacterial infection** causing pneumonia. * This option neglects the critical need for **antibiotic therapy** and specialized medical attention, making it an inappropriate and dangerous management strategy.

Q: In the IMNCI guidelines, what is the respiratory rate threshold that defines fast breathing for a 6-month-old infant?

50 breaths per minute. ***50 breaths per minute*** - According to the **Integrated Management of Childhood Illness (IMNCI)** guidelines, a respiratory rate of **50 breaths per minute or more** defines **fast breathing** in infants aged **2 months to 12 months**. - This threshold is crucial for identifying potential **pneumonia** or other severe respiratory infections in this age group, requiring prompt medical attention. *60 breaths per minute* - A respiratory rate of **60 breaths per minute or more** is considered fast breathing for **infants less than 2 months old**. - This threshold is specific to neonates and very young infants, as their normal resting respiratory rates are higher. *40 breaths per minute* - A respiratory rate of **40 breaths per minute** is considered the threshold for fast breathing in **children aged 12 months (1 year) to 5 years**. - This threshold applies to older infants and young children, where the normal respiratory rate is lower than in younger infants. *30 breaths per minute* - A respiratory rate of **30 breaths per minute** is generally considered within the **normal range for older children and adults**. - It does not represent fast breathing for an infant or young child according to IMNCI guidelines.

Q: What is a key diagnostic criterion for acute respiratory distress syndrome (ARDS) in a child?

Within 7 days of known clinical insult. ***Within 7 days of known clinical insult*** - A key diagnostic criterion for **Acute Respiratory Distress Syndrome (ARDS)** in children is the onset of respiratory symptoms within **7 days of a known clinical insult**. - This temporal relationship helps distinguish ARDS from other causes of respiratory failure that may have a more chronic or delayed onset. *Respiratory failure not fully explained* - **Respiratory failure not fully explained** by other conditions is a general characteristic but not a specific diagnostic criterion on its own. - ARDS requires the exclusion of cardiac failure as the primary cause of pulmonary edema, indicated by an absence of left atrial hypertension. *Left ventricular dysfunction* - **Left ventricular dysfunction** would suggest **cardiogenic pulmonary edema**, which needs to be excluded for a diagnosis of ARDS. - ARDS is characterized by **non-cardiogenic pulmonary edema**, meaning the fluid in the lungs is not due to heart failure. *All of the options* - This option is incorrect because **left ventricular dysfunction** is an *exclusion criterion* for ARDS, not a diagnostic criterion, as ARDS is defined by **non-cardiogenic pulmonary edema**. - While the other options relate to aspects of ARDS, only one is a key diagnostic criterion as formulated.

Q: A 3-month-old child presents with indrawing of the chest and a respiratory rate of 52 breaths per minute. This condition can be classified as:

Respiratory distress. ***Respiratory distress*** - **Indrawing of the chest** is a classic sign of increased work of breathing, indicating the child is struggling to oxygenate. - A respiratory rate of **52 breaths per minute in a 3-month-old** is significantly elevated and, combined with indrawing, points to respiratory distress. - According to **WHO IMCI guidelines**, chest indrawing in a child with fast breathing is classified as **pneumonia/respiratory distress** requiring immediate treatment. *SIRS* - **Systemic Inflammatory Response Syndrome (SIRS)** criteria are typically more comprehensive and include fever or hypothermia, tachycardia, tachypnea, and abnormal white blood cell count. - While tachypnea is present, the other defining features of SIRS are not fully met by the information provided, nor does indrawing directly classify as SIRS. *Tachypnoea* - **Tachypnoea** refers specifically to an elevated respiratory rate, which is present (52 breaths per minute). - However, the presence of **chest indrawing** indicates more than just rapid breathing; it signifies significant respiratory effort and compromise. - The classification must capture both the elevated rate and the increased work of breathing. *ARDS* - **Acute Respiratory Distress Syndrome (ARDS)** is a severe form of lung injury characterized by widespread inflammation, hypoxemia, and bilateral infiltrates on chest imaging. - While respiratory distress is a feature of ARDS, the given information is insufficient to diagnose ARDS, which requires specific criteria relating to oxygenation and radiological findings.

Q: At what age group is Streptococcus pneumoniae pneumonia most commonly observed?

< 5 years. ***< 5 years*** - *Streptococcus pneumoniae* pneumonia is particularly common and severe in **young children**, especially those under the age of 5, due to their developing immune systems. - This age group has a higher incidence of **invasive pneumococcal disease**, including pneumonia and meningitis, making vaccination crucial. *5 - 15 years* - While pneumonia can occur in this age group, it is **less common** than in very young children or older adults. - The immune system is generally more developed and effective at this age, leading to a **lower incidence** of severe pneumococcal infections. *20 - 25 years* - This age group generally has a robust immune system, making *Streptococcus pneumoniae* pneumonia **uncommon** unless there are underlying risk factors such as immunocompromise or chronic medical conditions. - Most cases of pneumonia in young adults are often due to **viral pathogens** or *Mycoplasma pneumoniae*. *30 - 40 years* - Similar to the 20-25 years age group, incidence of *Streptococcus pneumoniae* pneumonia remains **relatively low** in healthy individuals in their 30s and 40s. - Increased risk is typically associated with **chronic illnesses**, smoking, or conditions that weaken the immune system.

Q: Which of the following is not a recommended treatment for bronchiolitis?

Macrolides. ***Macrolides*** - **Macrolide antibiotics** are *not* recommended for treatment of **bronchiolitis**, as the condition is primarily caused by **viral infections** (mainly RSV), rendering antibiotics completely ineffective. - Bronchiolitis is a **viral illness**, and use of antibiotics like macrolides provides *no benefit*, increases risk of **antibiotic resistance**, and may cause unnecessary side effects. - This is the **most clearly not recommended** option among the choices. *Humid oxygen* - While **supplemental oxygen** is indicated for infants with **hypoxemia** (oxygen saturation <90%), **routine humidification** of oxygen is *not specifically recommended* by current guidelines. - Evidence does *not support* routine use of humidified oxygen therapy in bronchiolitis. - However, supplemental oxygen itself (when needed for low oxygen levels) is appropriate supportive care. *Bronchodilator* - **Bronchodilators** (like albuterol or salbutamol) are *not routinely recommended* for bronchiolitis, as most infants do not have significant **bronchospasm** and show *no sustained benefit*. - Guidelines suggest a **trial dose** may be considered, but should be *discontinued* if there is no clear clinical improvement. - The primary pathology is **bronchiolar inflammation and mucus plugging**, not reversible bronchospasm. *All of the options* - This option is incorrect because the question asks for what is "*not* recommended." - **Macrolides** are the most definitively not recommended, as they are completely ineffective against viral infections. - While bronchodilators and routine humidification also lack strong evidence, **macrolides** represent inappropriate therapy with no mechanism of benefit.

Question 1

A 9 month old child with respiratory rate 53/min and presence of cough is classified as :

Accepted Answer

Tachypnoea

Answer

Systemic Inflammatory Response Syndrome (SIRS)

Answer

Respiratory Distress Syndrome

Answer

Acute Respiratory Distress Syndrome (ARDS)

Question 2

Most common sign of LRTI [Lower respiratory tract infection] in children is

Accepted Answer

Tachypnea

Answer

Chest indrawing

Answer

Nasal flaring

Answer

Failure to feed well

Question 3

Antibiotic of choice for severe pneumonia in a 1-year-old child?

Accepted Answer

Benzyl penicillin

Answer

Cotrimoxazole

Answer

Ciprofloxacin

Answer

Tetracycline

Question 4

Which of the following statements about croup is false?

Accepted Answer

Croup is caused by bacterial infections.

Answer

Disease includes laryngitis and laryngotracheobronchitis.

Answer

Brassy cough is a common presenting feature.

Answer

Causes upper airway obstruction

Question 5

What is the appropriate management for a 3-year-old child presenting to the primary health center with fever and cough for 5 days, exhibiting chest indrawing?

Accepted Answer

Administer antibiotics and refer to tertiary care.

Answer

Prescribe antibiotics and schedule a follow-up.

Answer

Make an urgent referral to tertiary care.

Answer

Administer antipyretics only.

Question 6

In the IMNCI guidelines, what is the respiratory rate threshold that defines fast breathing for a 6-month-old infant?

Accepted Answer

50 breaths per minute

Answer

60 breaths per minute

Answer

40 breaths per minute

Answer

30 breaths per minute

Question 7

What is a key diagnostic criterion for acute respiratory distress syndrome (ARDS) in a child?

Accepted Answer

Within 7 days of known clinical insult

Answer

Respiratory failure not fully explained

Answer

Left ventricular dysfunction

Answer

All of the options

Question 8

A 3-month-old child presents with indrawing of the chest and a respiratory rate of 52 breaths per minute. This condition can be classified as:

Accepted Answer

Respiratory distress

Answer

SIRS

Answer

Tachypnoea

Answer

ARDS

Question 9

At what age group is Streptococcus pneumoniae pneumonia most commonly observed?

Accepted Answer

< 5 years

Answer

5 - 15 years

Answer

20 - 25 years

Answer

30 - 40 years

Question 10

Which of the following is not a recommended treatment for bronchiolitis?

Accepted Answer

Macrolides

Answer

Bronchodilator

Answer

Humid oxygen

Answer

All of the options

Respiratory Diseases — MCQs

Respiratory Diseases — MCQs

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