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Correct Answer: Give the calcium slowly over 10–15 minutes while closely watching the heart rhythm

Rationale:

• A potassium level of 6.3 mEq/L indicates moderate to severe hyperkalemia, a condition that can quickly lead to fatal cardiac arrhythmias such as ventricular tachycardia, ventricular fibrillation, or cardiac arrest.
• Intravenous calcium gluconate or calcium chloride does not reduce potassium levels, but it provides immediate protection by stabilizing the cardiac membrane against the effects of elevated potassium.
• To prevent complications such as bradycardia, heart block, or cardiac arrest, IV calcium must be given slowly over 10–15 minutes while continuously monitoring the patient’s ECG for any signs of improvement or worsening cardiac irritability.
• Rapid IV push of calcium is dangerous because it can cause severe hypotension, arrhythmias, or cardiac standstill. Slow administration ensures safe cardiac stabilization during hyperkalemic crises.
• Therefore, the nurse’s immediate priority is to administer IV calcium slowly with continuous cardiac monitoring to protect the heart while other hyperkalemia-correcting treatments are prepared.

Explanation of Other Options:

Give the calcium as a fast IV push

• Rationale: A rapid IV push can cause dangerous bradyarrhythmias or cardiac standstill. It is unsafe and contraindicated because calcium must be infused slowly in hyperkalemia.

Delay the calcium and recheck potassium in an hour

• Rationale: Hyperkalemia above 6.0 mEq/L is a true medical emergency. Delaying calcium increases the risk of sudden cardiac arrest. Immediate treatment is required.

Provide oral calcium along with a potassium-binding drug

• Rationale: Oral calcium works too slowly to stabilize the heart and is not appropriate in emergencies. Potassium binders help reduce potassium but do not provide rapid cardiac protection.

Conclusion:

• Hyperkalemia with a potassium level of 6.3 mEq/L poses immediate cardiac danger. The priority is to stabilize the myocardium by administering IV calcium slowly over 10–15 minutes while continuously monitoring the ECG, ensuring rapid and safe cardiac protection.

Correct Answer: First-degree AV block

Rationale:

• A first-degree AV block is characterized by a consistently prolonged PR interval greater than 0.20 seconds, with every P wave followed by a QRS complex. This means that electrical conduction through the AV node is delayed but not interrupted.
• In this case, the PR interval is 0.24 seconds, which confirms a significant conduction delay but still maintains a one-to-one atrioventricular conduction pattern.
• This rhythm is generally benign and is often caused by conditions such as increased vagal tone, beta-blockers, calcium-channel blockers, ischemia, or aging of the conduction system.
• Because the PR interval remains constant and prolonged on every beat without any dropped QRS complexes, it fits the classic presentation of a first-degree AV block.
• Therefore, a stable PR interval that is longer than normal but associated with a normal QRS response confirms the diagnosis of first-degree AV block.

Explanation of Other Options:

Atrial fibrillation

• Rationale: Atrial fibrillation has no identifiable P waves and produces an irregularly irregular rhythm. It does not have a measurable PR interval, so it cannot match this ECG description.

Second-degree AV block (Mobitz I)

• Rationale: Mobitz I (Wenckebach) shows a PR interval that becomes progressively longer until a QRS is dropped. In this scenario, the PR interval is constant and no QRS complexes are missing, ruling out Mobitz I.

Complete (third-degree) AV block

• Rationale: Third-degree AV block features no relationship between P waves and QRS complexes, with atria and ventricles beating independently. This does not match the described pattern of normal one-to-one conduction.

Conclusion:

• A PR interval that is uniformly and consistently prolonged on every beat, with each P wave followed by a QRS complex, is the hallmark of a first-degree AV block. This identifies delayed AV conduction without interruption of ventricular activation.

Correct Answer: Keep the bulb squeezed (compressed) after emptying and then close the cap

Rationale:

• A Jackson-Pratt (J-P) drain works on the principle of closed-suction drainage, meaning it must maintain continuous negative pressure to remove fluid effectively from the surgical site.
• After the drain is emptied, the nurse must squeeze (compress) the bulb before closing the cap. This creates the vacuum suction needed to pull fluid from the wound and into the bulb reservoir.
• If the bulb is not compressed after emptying, no suction is generated, and the drain becomes ineffective, increasing the risk of fluid accumulation, hematoma, seroma, and infection.
• Proper functioning of a J-P drain ensures reduced postoperative complications by maintaining continuous, gentle suction throughout recovery.
• Therefore, the essential nursing action is to compress the bulb and then close the cap to re-establish suction.

Explanation of Other Options:

Flush the tubing with sterile saline every shift

• Rationale: J-P drains are not designed to be flushed. Flushing may introduce bacteria or disrupt the closed-suction system, increasing infection risk.

Leave the bulb fully expanded all the time

• Rationale: A fully expanded bulb creates no suction. This renders the drain nonfunctional and leads to fluid retention inside the wound.

Empty the drain only when it becomes completely full

• Rationale: A J-P drain should be emptied when it is ½ to ¾ full. Allowing it to completely fill eliminates vacuum pressure and increases the risk of leakage and infection.

Conclusion:

• To ensure proper suction and effective postoperative drainage, the nurse must compress the J-P drain bulb after emptying and then close the cap. This restores negative pressure and maintains the function of the closed-suction system.

Correct Answer: Printer

Rationale:

• In computer hardware, an output device is any device that receives processed data from the computer and presents it in a human-readable form such as text, graphics, or physical copies.
• A printer is the most common output device because it takes digital information from the computer and produces a hard copy (printed document or image) on paper.
• Output devices do not send data into the computer; instead, they display, project, or print information created by the system.
• Printers come in several types—such as inkjet, laser, dot matrix—but all perform the same essential function of converting electronic data into physical output.
• Therefore, among the given options, the device that clearly functions as an output unit is the printer.

Explanation of Other Options:

Mouse

• Rationale: A mouse is an input device that sends data (movement and clicks) to the computer. It does not produce output.

Keyboard

• Rationale: A keyboard is an input device used to enter text and commands into the computer.

Scanner

• Rationale: A scanner converts physical documents into digital form, making it an input device, not an output device.

Conclusion:

• Among the listed options, the only device that provides information from the computer to the user is the printer, making it the correct example of an output device.

Correct Answer: 20

Rationale:

• The given sequence is: 2, 4, 8, 12, 16. To identify the next number, we must analyze the pattern of increments between consecutive terms.
• The differences between the numbers are:

4 − 2 = +2

8 − 4 = +4

12 − 8 = +4

16 − 12 = +4

• After the first increase of +2, the sequence continues with a consistent increase of +4 for each subsequent term.
• Following this established pattern, the next number should also increase by +4 from the last term.
• Therefore, 16 + 4 = 20, making it the next number in the logical progression of the sequence.

Correct Answer: Dr. A.P.J. Abdul Kalam

Rationale:

• Dr. A.P.J. Abdul Kalam is widely known as the “Missile Man of India” because of his exceptional contribution to India’s missile and launch vehicle development programs.
• He played a key leadership role in major projects such as Agni and Prithvi missiles under the Integrated Guided Missile Development Program (IGMDP), which significantly strengthened India’s defense capabilities.
• Apart from his scientific achievements, Dr. Kalam served as the 11^th President of India (2002–2007), where he was admired for his humility, simplicity, and inspiring vision for national development.
• He also contributed to India’s space research through his work with ISRO on the SLV-3 launch vehicle, which successfully placed the Rohini satellite into orbit.
• Due to his outstanding contributions to science, defense, and public service, he remains one of India’s most respected and inspirational personalities.

Explanation of Other Options:

Dr. Homi J. Bhabha

• Rationale: Known as the Father of India’s Nuclear Program, but not associated with missile development or presidency.

Dr. C.V. Raman

• Rationale: A Nobel Prize–winning physicist known for the Raman Effect, not for missile technology or presidency.

Dr. Vikram Sarabhai

• Rationale: Known as the Father of India’s Space Program, but not given the title “Missile Man,” nor was he President of India.

Conclusion:

• The Indian scientist honored as the “Missile Man of India” for leading missile technology development and who also served as the 11^th President is Dr. A.P.J. Abdul Kalam.

Correct Answer: Supportive management, mainly ensuring a clear airway and proper breathing

Rationale:

• Kerosene ingestion is a type of hydrocarbon poisoning, and the greatest danger is aspiration into the lungs, which can lead to severe complications such as chemical pneumonitis, respiratory distress, and hypoxia.
• The child in the scenario already shows coughing and breathing difficulty, which indicates early airway involvement. Therefore, the priority is to ensure a patent airway, adequate breathing, and sufficient oxygenation.
• Supportive care includes providing oxygen therapy, monitoring respiratory effort, checking lung sounds, maintaining airway patency, and preparing for advanced airway support if required.
• No specific antidote exists for kerosene poisoning; thus, management is primarily focused on stabilizing the airway and respiratory status, preventing aspiration, and observing for complications.
• Because respiratory compromise is the most life-threatening complication, airway and breathing management must always come first.

Explanation of Other Options:

Give activated charcoal as an antidote

• Rationale: Activated charcoal is not effective for hydrocarbons like kerosene because it does not bind well to them. It also increases the risk of vomiting and aspiration, worsening lung injury.

Make the child vomit right away to remove the kerosene

• Rationale: Inducing vomiting is because it greatly increases the risk of aspiration of kerosene into the lungs, leading to chemical pneumonitis.

Do gastric lavage with normal saline

• Rationale: Gastric lavage is in kerosene ingestion for the same reason—it increases aspiration risk. It is only considered in life-threatening amounts and with airway protection, which is rare.

Conclusion:

• Because kerosene ingestion primarily causes through aspiration, the first and most important nursing action is , making supportive respiratory management the top priority.

Correct Answer: Non-rebreather mask

Rationale:

• Deep burns involving the face, neck, and upper chest along with suspected inhalation injury indicate a high risk of airway edema, carbon monoxide exposure, and impaired oxygen exchange.
• In such emergencies, the priority is to deliver high-concentration oxygen (up to 95–100%) quickly to improve oxygenation and prevent respiratory failure.
• A non-rebreather mask (NRB) is the best device for delivering the highest FiO₂ short of endotracheal intubation. It uses a reservoir bag and one-way valves to deliver near-pure oxygen while minimizing rebreathing of CO₂.
• NRB masks are commonly used in patients with inhalation burns, smoke inhalation, carbon monoxide poisoning, and acute hypoxia, as they rapidly increase oxygen saturation.
• Additionally, the NRB system allows oxygen to be given with warm and humidified flow, which helps reduce airway dryness and soot irritation in patients with inhalation injury.
• Given the critical need for high FiO₂ and humidified oxygen therapy, the non-rebreather mask is the most appropriate initial oxygen delivery device.

Explanation of Other Options:

Oxygen tent

• Rationale: Provides cool, humidified oxygen but cannot deliver high FiO₂. Also impractical for severe respiratory distress or inhalation injury.

Nasal cannula

• Rationale: Gives low-flow oxygen (up to 6 L/min) with a FiO₂ of only 24–44%. Insufficient for severe hypoxia or inhalation burns.

Simple face mask

• Rationale: Can deliver FiO₂ up to 60% but still inadequate compared to a non-rebreather mask, especially in critical burn injuries.

Conclusion:

• In a patient with facial and neck burns, suspected inhalation injury, and low oxygen saturation, the non-rebreather mask provides the most effective, rapid, and high-concentration oxygen support.

Correct Answer: Sarojini Naidu

Rationale:

• Sarojini Naidu, also known as the “Nightingale of India”, holds the distinction of being the first woman governor of any Indian state.
• She was appointed as the Governor of Uttar Pradesh in 1947 and served until her death in 1949, making her the first woman to occupy such a high constitutional position in independent India.
• Her appointment reflected her strong contributions to India’s freedom struggle, leadership qualities, and significant role in national politics.
• Sarojini Naidu was also the first Indian woman to become the President of the Indian National Congress, further highlighting her pioneering role in Indian history.
• Thus, based on historical significance and official records, Sarojini Naidu is recognized as the first woman governor in India.

Explanation of Other Options:

Indira Gandhi

• Rationale: Indira Gandhi was the first woman Prime Minister of India, not a state governor.

Vijayalakshmi Pandit

• Rationale: She was the first woman to become the President of the UN General Assembly, but she was never a governor.

Sucheta Kripalani

• Rationale: Sucheta Kripalani was the first woman Chief Minister (Uttar Pradesh), not a governor.

Conclusion:

• The first woman to serve as a state governor in India was Sarojini Naidu, making her the correct and historically important answer.

Correct Answer: Frequent or constant swallowing

Rationale:

• After a tonsillectomy and adenoidectomy, the biggest postoperative risk is hemorrhage, which can occur immediately or even several days after surgery.
• Children often cannot verbalize active bleeding, so they show signs such as frequent or continuous swallowing as they attempt to clear blood draining down the throat.
• This “persistent swallowing” is one of the earliest and most reliable indicators of postoperative bleeding, even before visible blood appears in the mouth.
• Bleeding after tonsil surgery can be rapid and dangerous, leading to airway obstruction, aspiration, or hypovolemic shock. Therefore, parents must report this symptom immediately.
• Prompt recognition and treatment are essential to prevent severe complications, making frequent swallowing a critical warning sign.

Explanation of Other Options:

Mild fever around 99.5°F (37.5°C)

• Rationale: A slight increase in temperature is normal after surgery and not an indication of bleeding.

White patches seen in the throat

• Rationale: White or yellowish scabs are a normal part of healing after tonsillectomy and do not indicate infection or bleeding.

Complaints of throat discomfort

• Rationale: Pain or discomfort is expected for several days after the procedure. It does not indicate bleeding unless accompanied by other symptoms.

Conclusion:

• Among the discharge warning signs, frequent or constant swallowing is the most important to report because it strongly suggests postoperative bleeding following tonsillectomy and adenoidectomy.