Pediatric Critical Care Practice Questions

Q: What is the capillary refill time in a child with shock?

Greater than 3 seconds. **Explanation:** Capillary Refill Time (CRT) is a rapid clinical assessment tool used to evaluate peripheral perfusion. In a healthy child, CRT is typically less than 2 seconds. In the setting of **shock**, the body initiates a compensatory sympathetic response, leading to peripheral vasoconstriction to divert blood flow to vital organs (heart and brain). This reduced cutaneous perfusion results in a delayed CRT. * **Why Option C is Correct:** According to the **PALS (Pediatric Advanced Life Support)** and **WHO** guidelines, a CRT of **greater than 3 seconds** is considered a clinical sign of impaired systemic perfusion and is a hallmark of shock in children. It indicates significant peripheral vasoconstriction or decreased cardiac output. * **Why Options A & B are Incorrect:** A CRT of 1 or 2 seconds is considered within the **normal physiological range** for a child in a neutral thermal environment. These values do not indicate the circulatory compromise required to diagnose shock. * **Why Option D is Incorrect:** While a CRT >4 seconds certainly indicates shock, it is a late or more severe finding. The standard diagnostic threshold for identifying the onset of clinical shock is >3 seconds. **High-Yield Clinical Pearls for NEET-PG:** * **Technique:** CRT should be measured by applying firm pressure for 5 seconds to a blanchable skin surface (ideally the fingernail bed or chest) at the level of the heart. * **False Positives:** Cold ambient temperature can prolong CRT even in the absence of shock. * **Septic Shock Paradox:** In "Warm Shock" (early distributive shock), the CRT may actually be **brisk ( 3 seconds is also a key predictor of >5% dehydration in children with gastroenteritis.

Q: According to PALS 2010 guidelines, which of the following is NOT a component of the initial impression of a child?

Airway. In Pediatric Advanced Life Support (PALS), the **Initial Impression** is a rapid "from-the-door" visual and auditory assessment performed within seconds to identify life-threatening conditions before touching the patient. ### Why "Airway" is the Correct Answer The Initial Impression is based on the **Pediatric Assessment Triangle (PAT)**, which consists of three specific components: **Appearance, Work of Breathing, and Circulation to Skin.** * **Airway** is the first step of the **Primary Assessment (ABCDE)**, which is a more hands-on, clinical evaluation. You cannot definitively assess airway patency (e.g., checking for secretions or structural obstruction) just by looking from a distance; it requires physical intervention or closer examination. ### Explanation of Incorrect Options * **A. Consciousness (Appearance):** This evaluates the child’s neurological status (tone, interactiveness, consolability, look/gaze, and speech/cry). It is the "Appearance" limb of the PAT. * **B. Colour (Circulation):** This evaluates the "Circulation to Skin" limb. Clinicians look for pallor, mottling, or cyanosis to judge perfusion status. * **D. Breathing:** This evaluates the "Work of Breathing" limb. It involves looking for abnormal sounds (stridor, wheezing), positioning (sniffing position, tripod), or visible retractions. ### NEET-PG High-Yield Pearls 1. **Sequence of Assessment:** PALS follows a specific hierarchy: **Initial Impression** (Visual) → **Primary Assessment** (ABCDE - Physical) → **Secondary Assessment** (SAMPLE history/Physical exam) → **Tertiary Assessment** (Labs/Imaging). 2. **The PAT Components:** * **Appearance:** Reflects CNS perfusion and oxygenation. * **Breathing:** Reflects the adequacy of oxygenation and ventilation. * **Circulation:** Reflects cardiac output and perfusion to vital organs. 3. **TICLS Mnemonic:** Used to assess "Appearance" (Tone, Interactiveness, Consolability, Look/Gaze, Speech/Cry).

Q: What is the amount of fluid to be given to a 2-year-old child weighing 12 kg with severe dehydration in the first half an hour of IV rehydration?

360 ml. ### Explanation The management of severe dehydration in children follows the **WHO Plan C** protocol. For a child over 1 year of age, the total intravenous fluid requirement is **100 ml/kg**, administered over 3 hours. **The Calculation:** * **Total Fluid:** 100 ml/kg × 12 kg = 1200 ml. * **First Phase (First 30 minutes):** 30 ml/kg. * 30 ml × 12 kg = **360 ml**. * **Second Phase (Next 2.5 hours):** 70 ml/kg. * 70 ml × 12 kg = 840 ml. Therefore, **360 ml** is the correct volume to be administered in the first 30 minutes. **Analysis of Incorrect Options:** * **Option A (120 ml):** This represents 10 ml/kg, which is insufficient for initial resuscitation in severe dehydration. * **Option B (240 ml):** This represents 20 ml/kg. While 20 ml/kg is the standard bolus for **hypovolemic shock**, the WHO Plan C specifically mandates 30 ml/kg for severe dehydration in the first phase. * **Option D (840 ml):** This is the volume for the **second phase** (remaining 2.5 hours) of the rehydration process. **High-Yield Clinical Pearls for NEET-PG:** 1. **Fluid of Choice:** Ringer’s Lactate (RL) is preferred. If RL is unavailable, Normal Saline (NS) can be used. 2. **Age Differentiation:** * ** 1 year:** 30 ml/kg in 30 mins, then 70 ml/kg in 2.5 hours (Total 3 hours). 3. **Assessment:** Reassess the child every 15–30 minutes. If the radial pulse is still weak, repeat the first 30 ml/kg bolus.

Q: What is the fluid of choice for a child with a burn sustained less than 24 hours ago?

Ringer lactate. **Explanation:** The management of pediatric burns in the first 24 hours focuses on aggressive volume resuscitation to counteract "burn shock," which is characterized by increased capillary permeability and massive fluid shifts from the intravascular to the interstitial space. **Why Ringer Lactate (RL) is the Correct Choice:** RL is the preferred crystalloid because its electrolyte composition closely resembles human plasma (isotonic). Unlike Normal Saline, RL contains sodium lactate, which is metabolized into bicarbonate, helping to buffer the metabolic acidosis commonly seen in burn patients. It prevents the development of hyperchloremic metabolic acidosis, which can occur with large volumes of 0.9% NaCl. **Analysis of Incorrect Options:** * **Fresh Frozen Plasma (FFP):** While burns cause protein loss, colloids like FFP are generally avoided in the first 8–12 hours because increased capillary permeability allows these large molecules to leak into the interstitium, worsening edema. * **Isolyte-P:** This is a hypotonic maintenance fluid. Using hypotonic solutions for initial resuscitation can lead to dangerous hyponatremia and cerebral edema. * **Platelet Transfusion:** This is not a resuscitation fluid; it is only indicated if there is documented thrombocytopenia or active coagulopathy. **High-Yield Clinical Pearls for NEET-PG:** * **Parkland Formula:** $4 \text{ mL} \times \text{Body Weight (kg)} \times \text{TBSA (\%)} = \text{Total fluid in 24 hours}$. Give half in the first 8 hours and the remainder over the next 16 hours. * **Pediatric Specifics:** Children <20 kg have limited glycogen stores; therefore, **Maintenance Fluid (containing 5% Dextrose)** must be added to the Parkland requirement to prevent hypoglycemia. * **Monitoring:** The most reliable indicator of adequate resuscitation is **Urine Output** (Target: $1 \text{ mL/kg/hr}$ in children; $0.5 \text{ mL/kg/hr}$ in adults).

Q: In pediatric advanced life support, intraosseous access for drug/fluid administration is recommended for which pediatric age group?

Less than 6 years of age. **Explanation:** The correct answer is **C. Less than 6 years of age**. **1. Why Option C is Correct:** In pediatric resuscitation, establishing rapid vascular access is critical. Intraosseous (IO) access is recommended as the preferred alternative when peripheral intravenous (IV) access cannot be established within 90 seconds or three attempts. Historically, PALS guidelines emphasized IO access primarily for children **less than 6 years of age**. This is because, in younger children, the bone marrow cavity is highly vascularized and the cortex is relatively thin, allowing for easy manual needle insertion and rapid absorption of fluids and medications into the systemic circulation. **2. Why Other Options are Incorrect:** * **Options A & B:** While IO access is frequently used in infants and toddlers, limiting it to these age groups is too restrictive. The physiological benefits of the medullary cavity extend throughout early childhood. * **Option D:** While modern technology (powered IO drivers) allows for IO access in adults, traditional pediatric teaching and classic NEET-PG questions based on standard textbooks (like Ghai Pediatrics) specifically highlight the "under 6 years" threshold as the primary demographic for manual IO needle placement. **3. High-Yield Clinical Pearls for NEET-PG:** * **Preferred Site:** The **proximal tibia** (1–3 cm below the tibial tuberosity on the anteromedial surface) is the most common site. * **Contraindications:** Bone fracture at the site, osteogenesis imperfecta, or overlying skin infection (cellulitis). * **Drug Delivery:** Any drug that can be given IV can be given IO (including epinephrine, fluids, and blood products) at the same dosages. * **Confirmation:** Success is indicated by a "give" or "pop" during insertion, the needle standing upright without support, and the ability to aspirate bone marrow.

Q: What is the proper rate of rescue breathing in children?

20 times per minute. **Explanation:** The correct rate of rescue breathing in children (infants and children up to the onset of puberty) is **20 times per minute**, which translates to **one breath every 2–3 seconds**. This guideline is based on the **2020 AHA (American Heart Association) Update for PALS**, which increased the recommended rate from the previous 12–20 bpm to a fixed, higher frequency to better match the physiological demands of a critically ill child. **Analysis of Options:** * **Option B (20 bpm):** This is the current standard for pediatric rescue breathing when a pulse is present but spontaneous breathing is absent or inadequate. * **Option A (12 bpm):** This was the lower end of the previous recommendation (12–20 bpm) and is now considered too slow for pediatric resuscitation. * **Option C (8 bpm):** This is significantly below the physiological requirement for any pediatric age group and would lead to hypercapnia and hypoxia. * **Option D (24 bpm):** While closer to the physiological respiratory rate of an infant, it exceeds the standardized BLS/PALS rescue breathing protocol of 20 bpm. **High-Yield Clinical Pearls for NEET-PG:** 1. **Rescue Breathing vs. Advanced Airway:** If an advanced airway (ET tube) is in place during CPR, the ventilation rate is also **one breath every 2–3 seconds (20–30 bpm)**, regardless of age. 2. **Pulse Check:** In pediatric BLS, if the heart rate is **<60 bpm** with signs of poor perfusion despite oxygenation/ventilation, start chest compressions even if a pulse is palpable. 3. **Adult Rate:** For adults, the rescue breathing rate remains **10–12 times per minute** (one breath every 5–6 seconds).

Q: In children, intraosseous lines are typically placed in which bone?

Tibia. **Explanation:** Intraosseous (IO) access is a life-saving procedure in pediatric resuscitation when peripheral intravenous access cannot be established within 90 seconds or three attempts. The **proximal tibia** is the most common and preferred site in children due to its thin cortex, easily identifiable landmarks (it is subcutaneous), and large marrow cavity which acts as a "non-collapsible vein." * **Tibia (Correct):** The preferred site is the **proximal tibia**, specifically 1–3 cm distal to the tibial tuberosity on the anteromedial surface. In older children, the **distal tibia** (proximal to the medial malleolus) is an alternative. * **Femur (Incorrect):** While the distal femur can be used in infants and young children, it is technically more difficult due to the thick layer of overlying fat and muscle, making landmarks harder to palpate compared to the tibia. * **ASIS/Iliac Crest (Incorrect):** These sites are rarely used for IO access in children. While the iliac crest is a common site for bone marrow aspiration/biopsy, it is not a primary site for emergency fluid resuscitation due to positioning difficulties during CPR. **Clinical Pearls for NEET-PG:** * **Indication:** Any emergency (shock, cardiac arrest) where IV access is delayed. * **Contraindications:** Fracture of the target bone, overlying skin infection (cellulitis), or previous IO attempt in the same bone. * **Flow Rates:** Fluids, blood products, and all ACLS medications can be given via IO. Pressure bags are often required to achieve adequate flow. * **Complication:** Osteomyelitis is the most serious (though rare) complication; others include compartment syndrome and growth plate injury.

Question 1

What is the capillary refill time in a child with shock?

Accepted Answer

Greater than 3 seconds

Answer

Greater than 1 second

Answer

Greater than 2 seconds

Answer

Greater than 4 seconds

Question 2

What is the drug of choice for anaphylactic shock in a 10-year-old child?

Accepted Answer

Intravenous adrenaline

Answer

Subcutaneous adrenaline

Answer

Antihistamine

Answer

Corticosteroids

Question 3

According to PALS 2010 guidelines, which of the following is NOT a component of the initial impression of a child?

Accepted Answer

Airway

Answer

Consciousness

Answer

Colour

Answer

Breathing

Question 4

What is the amount of fluid to be given to a 2-year-old child weighing 12 kg with severe dehydration in the first half an hour of IV rehydration?

Accepted Answer

360 ml

Answer

120 ml

Answer

240 ml

Answer

840 ml

Question 5

What is the fluid of choice for a child with a burn sustained less than 24 hours ago?

Accepted Answer

Ringer lactate

Answer

Fresh frozen plasma

Answer

Isolyte-P

Answer

Platelet transfusion

Question 6

Management of raised intracranial pressure in a child with head injury admitted to the ICU includes all of the following except:

Accepted Answer

Minimal use of sedation and analgesia

Answer

Mannitol, if there is no intracranial hemorrhage

Answer

Controlled mechanical ventilation

Answer

Hypertonic saline may be used

Question 7

Which of the following symptoms and signs are seen in hypernatremic dehydration?

Accepted Answer

Irritability and Lethargy

Answer

Irritability and Drowsiness

Answer

Irritability and Oliguria

Answer

Lethargy and Oliguria

Question 8

In pediatric advanced life support, intraosseous access for drug/fluid administration is recommended for which pediatric age group?

Accepted Answer

Less than 6 years of age

Answer

Less than 1 year of age

Answer

Less than 5 years of age

Answer

Any age

Question 9

What is the proper rate of rescue breathing in children?

Accepted Answer

20 times per minute

Answer

12 times per minute

Answer

8 times per minute

Answer

24 times per minute

Question 10

In children, intraosseous lines are typically placed in which bone?

Accepted Answer

Tibia

Answer

Femur

Answer

ASIS

Answer

Iliac crest

Pediatric Critical Care — MCQs

Pediatric Critical Care — MCQs

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