NCLEX Practice Exam for Pediatric Nursing: Respiratory Disorders

EXPLANATION

✔Correct answer:

"We're limiting his physical activity entirely to avoid triggering any asthma attacks." Explanation and Reasoning: Limiting physical activity entirely is not recommended for asthma management. While it is important to avoid known triggers, completely restricting physical activity can negatively impact a child's overall health and well-being. Physical activity is beneficial for children with asthma as it helps improve cardiovascular health, lung function, and overall fitness. The key is to manage asthma effectively through medication and trigger avoidance so that the child can participate safely in physical activities. Proper use of a bronchodilator before exercise, along with good asthma control, usually allows children to engage in physical activities.

Imagine having a car that needs regular maintenance to run smoothly. Instead of never driving it to avoid wear and tear, it’s better to maintain it properly and use it as intended. Similarly, with proper asthma management, Archer can safely participate in physical activities without unnecessary restrictions.

Regular physical activity can strengthen respiratory muscles and improve overall lung function. When asthma is well-controlled with appropriate use of medications such as bronchodilators and inhaled corticosteroids, the risk of exercise-induced asthma attacks can be minimized. It is important to educate families on how to use medications effectively to manage symptoms and allow children to lead active lives.

✘Incorrect answer options:

"We're keeping track of the triggers that can cause his asthma attacks." This is a correct and important practice. Identifying and avoiding asthma triggers is a key part of managing asthma and preventing attacks.

"He uses his bronchodilator inhaler first, followed by the steroid inhaler." This is also correct. Using a bronchodilator first opens up the airways, making the steroid inhaler more effective in reducing inflammation.

"He's drinking more water to help thin out any respiratory secretions." This is a good practice. Staying hydrated helps to thin mucus, making it easier to clear from the airways and reducing the likelihood of blockages and infections.

EXPLANATION

✔Correct answer:

The child's pulmonary secretions are unusually thick and sticky. A key aspect of cystic fibrosis (CF) is the production of unusually thick and sticky mucus, which primarily affects the respiratory and digestive systems. In the lungs, the thick mucus can obstruct the airways, leading to chronic respiratory infections, inflammation, and difficulty breathing. Effective management of these thick secretions is critical in the care of a child with CF. Nurse Anderson should include interventions to promote airway clearance, prevent infections, and ensure adequate nutrition and hydration in the care plan.

Think of the airways like plumbing pipes. In cystic fibrosis, the pipes are filled with thick sludge instead of water, which can easily cause blockages and slow down the flow. Clearing and thinning this sludge regularly is essential to keep the pipes functioning properly.

Cystic fibrosis is caused by mutations in the CFTR gene, which affects the movement of salt and water in and out of cells. This defect leads to the production of thick and sticky mucus in various organs, including the lungs and pancreas. The thick mucus can obstruct airways and ducts, causing respiratory and digestive issues. Interventions may include chest physiotherapy, inhaled medications to thin mucus, antibiotics to treat infections, and enzyme supplements to aid digestion.

✘Incorrect answer options:

Cystic fibrosis is inherited in an autosomal dominant pattern. This is incorrect. Cystic fibrosis is inherited in an autosomal recessive pattern, meaning that a child must inherit two defective copies of the CFTR gene (one from each parent) to develop the disease.

The disorder causes obstruction of the endocrine glands. While cystic fibrosis primarily affects exocrine glands, leading to thick mucus production in the lungs and digestive system, it does not typically cause obstruction of endocrine glands, which release hormones directly into the bloodstream.

The sweat of a person with cystic fibrosis contains high levels of potassium. This is incorrect. The sweat of a person with cystic fibrosis contains high levels of sodium and chloride, not potassium. This is often used as a diagnostic indicator in the sweat chloride test.

EXPLANATION

✔Correct answer:

An infant who regularly sleeps on their back.  Placing infants on their backs to sleep is one of the most effective measures to reduce the risk of sudden infant death syndrome (SIDS). The "Back to Sleep" campaign, now known as "Safe to Sleep," was launched to educate parents and caregivers about this practice. Sleeping on the back helps keep the airways open and reduces the risk of suffocation and rebreathing of carbon dioxide, both of which are risk factors for SIDS. Studies have shown a significant decrease in SIDS rates since the widespread adoption of this recommendation.

Think of the baby's sleeping position like the safest position for a person in a car. Just as wearing a seatbelt and sitting upright in a car seat reduces the risk of injury in an accident, placing a baby on their back to sleep reduces the risk of SIDS by ensuring the airways remain clear and unobstructed.

When an infant sleeps on their back, the risk of airway obstruction is minimized because the position keeps the tongue and soft tissues from blocking the airway. Additionally, this position helps maintain stable and even breathing patterns, reducing the likelihood of apnea or reduced oxygen levels during sleep. Proper airway management and stable breathing are critical in preventing SIDS.

✘Incorrect answer options:

An infant with a history of prenatal drug exposure. Prenatal drug exposure can lead to numerous health complications, including low birth weight and developmental issues, both of which are associated with an increased risk of SIDS.

An infant who was born prematurely. Premature infants have underdeveloped lungs and other vital organs, making them more vulnerable to respiratory problems and SIDS. They are at a higher risk compared to full-term infants.

An infant who has a sibling that died of SIDS. Having a sibling who died of SIDS can indicate a genetic or environmental predisposition to the condition, increasing the risk for subsequent siblings.

EXPLANATION

✔Correct answer:

Keeping the child away from individuals with colds or other upper respiratory infections. Explanation and Reasoning: It is crucial to minimize Regina's exposure to individuals with colds or other upper respiratory infections because these infections can lead to or exacerbate otitis media. Upper respiratory infections can cause inflammation and congestion in the Eustachian tubes, which can lead to fluid buildup and infection in the middle ear. Preventing these infections helps reduce the risk and severity of otitis media.

Think of the Eustachian tubes as small drainage pipes that can easily get clogged. If people around Regina are sick, it increases the chance that she will get an infection, leading to a blockage and fluid buildup in these pipes, causing ear infections.

The Eustachian tubes connect the middle ear to the back of the throat and help regulate air pressure and drain fluids. When a child has an upper respiratory infection, these tubes can become swollen and blocked, leading to fluid accumulation in the middle ear. This fluid provides an environment for bacteria or viruses to grow, resulting in otitis media. By keeping the child away from sick individuals, the risk of these infections is reduced.

✘Incorrect answer options:

Bottle-feeding the child while she is lying on her back. This practice should be avoided as it can increase the risk of ear infections. The horizontal position can allow milk to flow into the Eustachian tubes, leading to fluid buildup and potential infection. It is better to feed the child in an upright position.

Using cotton swabs to clean inside the child's ear canals. This should not be done because it can push earwax deeper into the ear canal, cause injury, and increase the risk of infection. The outer ear can be gently cleaned with a soft cloth.

Administering the prescribed amoxicillin (Amoxil) when the child's stomach is empty. While some medications are better absorbed on an empty stomach, amoxicillin can be given with or without food. Ensuring the child takes the medication as prescribed is more important than whether the stomach is empty.

EXPLANATION

✔Correct answer:

Epiglottitis. The Haemophilus influenzae type B (Hib) vaccine significantly reduces the incidence of epiglottitis, a life-threatening condition that occurs when the epiglottis becomes inflamed and swollen, potentially blocking the airway and causing severe respiratory distress. Before the introduction of the Hib vaccine, Haemophilus influenzae type B was the most common cause of epiglottitis in children. The vaccine has dramatically decreased the number of cases, making this condition much less common.

Think of the Hib vaccine as a security system for the body. Just as a security system prevents intruders from entering a home, the Hib vaccine prevents harmful bacteria from causing severe infections like epiglottitis, protecting the child’s airway from potentially life-threatening blockage.

Epiglottitis is characterized by the rapid onset of symptoms such as fever, sore throat, difficulty swallowing, drooling, and respiratory distress. The inflammation of the epiglottis can lead to complete airway obstruction if not treated promptly. The Hib vaccine stimulates the immune system to produce antibodies against Haemophilus influenzae type B, thereby preventing the bacteria from causing infection and inflammation of the epiglottis.

✘Incorrect answer options:

Pneumonia. While the Hib vaccine can help reduce the incidence of pneumonia caused by Haemophilus influenzae type B, pneumonia can be caused by a variety of other bacteria, viruses, and fungi. Therefore, the reduction in pneumonia cases is not as significant or specific to the Hib vaccine as the reduction in epiglottitis cases.

Laryngotracheobronchitis (LTB). Also known as croup, LTB is primarily caused by viral infections, particularly the parainfluenza virus. The Hib vaccine does not protect against these viral infections, making it less relevant in the context of LTB.

Bronchiolitis. Bronchiolitis is most commonly caused by respiratory syncytial virus (RSV) and other viruses. The Hib vaccine does not protect against these viral pathogens, so it does not significantly impact the incidence of bronchiolitis.

EXPLANATION

✔Correct answer:

Chest pain. Chest pain is a common symptom of pneumococcal pneumonia, which is caused by the bacteria Streptococcus pneumoniae. This type of pneumonia typically affects the lower respiratory tract, leading to inflammation of the alveoli and the surrounding lung tissues. The inflammation and infection can cause significant discomfort, including pleuritic chest pain, which is sharp and worsens with deep breaths or coughing. Assessing for chest pain is crucial in monitoring the severity and progression of the infection.

Imagine the lungs as two balloons inside a box. If the balloons become inflamed and swollen, they will rub against the sides of the box, causing sharp pain, especially when the box (chest) moves or expands. This is similar to the pleuritic chest pain experienced in pneumococcal pneumonia.

Pneumococcal pneumonia involves the infection and inflammation of the alveoli, leading to the accumulation of fluid and pus. This results in impaired gas exchange, hypoxia, and respiratory distress. The pleura, which are the membranes surrounding the lungs, become inflamed (pleuritis), contributing to the characteristic chest pain. Monitoring chest pain helps in assessing the severity of the inflammation and the effectiveness of the treatment.

✘Incorrect answer options:

A slight fever. While fever is a common symptom of pneumonia, it is usually more pronounced rather than slight. Pneumococcal pneumonia often presents with a high fever, chills, and rigors as part of the body's immune response to the bacterial infection.

A bulging fontanel. A bulging fontanel is a symptom observed in infants, indicating increased intracranial pressure. Since Joe is 13 years old, this symptom is not relevant or expected in his case.

A mild cough. Pneumococcal pneumonia typically causes a more severe cough rather than a mild one. The cough is often productive, with sputum that may be rusty or purulent due to the infection in the lungs.

EXPLANATION

✔Correct answer:

Starting with the least intrusive procedures and progressing to the most intrusive. When conducting a physical examination on a young child, it is important to start with the least intrusive procedures to help the child feel comfortable and less anxious. By beginning with less invasive parts of the exam, such as listening to the heart and lungs with a stethoscope, Nurse Patel can build trust and gradually ease the child into the more intrusive parts of the examination, such as examining the ears, mouth, and abdomen. This approach helps to reduce the child's fear and discomfort, making the examination process smoother and more effective.

Imagine trying to introduce a child to a new game. You would start with the easy, fun parts to get them interested and comfortable, and then gradually introduce the more challenging aspects. Similarly, starting with the least intrusive procedures during a physical exam helps the child feel more at ease.

✘Incorrect answer options:

Beginning with the abdomen, moving to the toes, and then examining the head. This sequence may involve starting with more intrusive parts of the examination, such as palpating the abdomen, which can be uncomfortable and make the child anxious early in the process.

Performing the examination from the head down to the toes. While a head-to-toe examination is a systematic approach often used in adults, it may not be suitable for toddlers, as starting with the head (including ears, eyes, and mouth) can be intrusive and frightening for young children.

Examining from the distal parts of the limbs towards the proximal body parts. This approach is not typically used in pediatric examinations and may not provide a logical flow for reducing anxiety and discomfort in young children.

EXPLANATION

✔Correct answer:

Behavioral patterns are often transmitted across generations within a family. Culture plays a significant role in shaping a child's behavior and health practices. Behavioral patterns, including attitudes towards health, dietary practices, and responses to illness, are often passed down from one generation to the next within families. These cultural influences can deeply affect how a family perceives health and illness, how they seek healthcare, and how they adhere to medical advice. Understanding these generational influences allows healthcare providers to offer more culturally sensitive and effective care.

Think of cultural practices as recipes handed down through generations. Just as a family might pass down a favorite recipe from grandparents to grandchildren, they also pass down health practices and beliefs. Recognizing these "cultural recipes" helps healthcare providers understand and respect a patient's background.

The cultural context in which a child is raised influences their health behaviors and perceptions. For example, dietary habits, traditional remedies, attitudes toward illness, and approaches to healthcare are all shaped by cultural norms and values. These behaviors and practices are often deeply rooted in family traditions and community practices, making it crucial for healthcare providers to consider cultural background when planning and delivering care.

✘Incorrect answer options:

A group's shared values are solely determined by their heritage. While heritage is an important component of cultural values, it is not the only factor. Current social environment, community influences, and individual experiences also shape a group's values and health practices.

A child's physical appearance is the primary indicator of their cultural affiliation. Physical appearance is not a reliable indicator of cultural background. Cultural affiliation is better understood through communication, observation of behaviors, and understanding family and community practices rather than relying on physical traits.

The cultural background of a family generally has minimal impact on their health practices. This statement is incorrect because cultural background significantly impacts health practices, including beliefs about illness, prevention strategies, dietary practices, and approaches to treatment. Recognizing and respecting cultural differences is essential for providing effective and empathetic healthcare.

EXPLANATION

✔Correct answer:

The characteristics of the Eustachian tubes. Otitis media is more common in children primarily due to the anatomical differences in their Eustachian tubes compared to adults. In children, the Eustachian tubes are shorter, narrower, and more horizontally oriented. This makes it easier for pathogens from the nasopharynx to enter the middle ear and for fluids to become trapped. Additionally, the immature immune system in children contributes to the increased incidence of infections. These factors collectively predispose children to otitis media more than adults.

Imagine the Eustachian tube as a drainage pipe. In children, this pipe is shorter and more horizontal, like a flat tube, making it easier for debris and fluids to get stuck, leading to blockages and infections. In adults, the tube is longer and more vertical, like a slanted tube, allowing better drainage and reducing the risk of blockages.

The Eustachian tubes connect the middle ear to the nasopharynx and are responsible for equalizing ear pressure and draining fluids from the middle ear. In children, these tubes are not fully developed, leading to poor drainage and ventilation of the middle ear. This anatomical predisposition facilitates the accumulation of fluid and bacteria, resulting in a higher risk of otitis media.

✘Incorrect answer options:

The structure of the external ear canal. The structure of the external ear canal does not significantly differ between children and adults in a way that predisposes to otitis media. The primary function of the external ear canal is to transmit sound waves to the tympanic membrane, and it plays a minimal role in the development of middle ear infections.

The nature of the tympanic membrane. While the tympanic membrane (eardrum) can become inflamed and infected in cases of otitis media, its structure does not inherently predispose children to the condition. The tympanic membrane acts as a barrier between the external ear canal and the middle ear but is not a primary factor in the increased incidence of otitis media in children.

The configuration of the nasopharynx. The nasopharynx is the upper part of the throat behind the nose and above the soft palate. While infections in the nasopharynx can spread to the middle ear, the anatomical configuration of the nasopharynx itself is not the main reason for the higher incidence of otitis media in children. The primary anatomical feature contributing to otitis media in children is the Eustachian tubes.

EXPLANATION

✔Correct answer:

Bronchopulmonary dysplasia (BPD). Bronchopulmonary dysplasia (BPD) is a chronic lung disease that most commonly affects premature infants with very low birth weight who have required mechanical ventilation and prolonged oxygen therapy. Nurse Jackson's careful regulation of inspiratory pressure and oxygen concentration is critical in preventing BPD. High levels of oxygen and prolonged mechanical ventilation can cause injury to the immature lungs, leading to inflammation, scarring, and the development of BPD.

Think of a balloon that is overinflated repeatedly. Over time, the balloon's material becomes damaged and less elastic. Similarly, the delicate lungs of a premature infant can be damaged by excessive pressure and high oxygen levels, leading to chronic lung problems like BPD.

In BPD, the immature lungs of preterm infants are damaged due to mechanical ventilation and high oxygen concentrations. This damage results in inflammation and fibrosis, reducing the ability of the lungs to function properly. By carefully monitoring and adjusting the respiratory support, Nurse Jackson aims to minimize lung injury, promoting better long-term respiratory outcomes for Baby Marian.

✘Incorrect answer options:

Meconium aspiration syndrome. Meconium aspiration syndrome occurs when a newborn inhales a mixture of meconium and amniotic fluid into the lungs around the time of birth. It primarily affects full-term or post-term infants rather than preterm infants with very low birth weight.

Respiratory distress syndrome (RDS). RDS is a common condition in preterm infants due to surfactant deficiency, leading to lung collapse and difficulty breathing. While Nurse Jackson would also monitor for RDS, the specific regulation of inspiratory pressure and oxygen concentration is more directly aimed at preventing BPD.

Respiratory syncytial virus (RSV). RSV is a viral infection that can cause severe respiratory illness in infants and young children. However, RSV is not directly related to the regulation of inspiratory pressure and oxygen concentration in a newborn with very low birth weight.

EXPLANATION

✔Correct answer:

Respiratory syncytial virus (RSV). Ribavirin (Virazole) is an antiviral medication primarily used to treat severe respiratory syncytial virus (RSV) infections, particularly in infants and young children. RSV is a common respiratory virus that can cause serious respiratory tract infections, especially in premature infants, children with underlying health conditions, and immunocompromised patients. Ribavirin works by inhibiting viral RNA synthesis, thereby reducing viral replication and severity of the infection.

Think of ribavirin as a specialized tool designed to combat a specific type of invader (RSV) in the body, similar to how a key is made to fit a particular lock. Just as a key can open only its matching lock, ribavirin is particularly effective against RSV, making it the go-to treatment for this virus.

RSV is a virus that infects the respiratory tract, causing inflammation and obstruction of the airways. This can lead to symptoms ranging from mild cold-like symptoms to severe respiratory distress. Ribavirin's ability to inhibit viral replication helps control the spread of the virus within the respiratory system, alleviating symptoms and preventing complications.

✘Incorrect answer options:

Otitis media. Ribavirin is not typically used to treat otitis media, which is a middle ear infection commonly caused by bacteria. Treatment for otitis media usually involves antibiotics rather than antiviral medications.

Bronchitis. While bronchitis can be caused by viruses, ribavirin is not a standard treatment for this condition. Bronchitis often resolves on its own, and treatment typically focuses on symptom management rather than antiviral therapy.

Cystic fibrosis. Cystic fibrosis is a genetic disorder affecting the lungs and other organs, characterized by thick mucus production. The management of cystic fibrosis involves a combination of airway clearance techniques, medications, and sometimes antibiotics, but ribavirin is not commonly used for this condition.

EXPLANATION

✔Correct answer:

To relax and widen the bronchioles. Beta-adrenergic agonists, such as albuterol, are bronchodilators that work by stimulating beta-2 adrenergic receptors in the smooth muscle of the airways. This stimulation leads to relaxation of the bronchial smooth muscles, resulting in the widening (dilation) of the bronchioles. This action helps to relieve bronchospasm, making it easier for patients with asthma to breathe by improving airflow and reducing respiratory distress during an asthma attack.

Think of the bronchioles as tubes that can constrict and become narrow during an asthma attack, making it hard for air to pass through. Albuterol acts like a muscle relaxant for these tubes, helping them to expand and allowing air to flow more freely, much like opening a tightly squeezed garden hose to let water flow through smoothly.

Beta-2 adrenergic receptors are found in the smooth muscle of the bronchioles. When activated by beta-adrenergic agonists like albuterol, these receptors cause the muscles to relax, leading to bronchodilation. This process helps reduce the resistance in the respiratory airway and increases the airflow to the lungs, providing quick relief from the symptoms of asthma such as wheezing, coughing, and shortness of breath.

✘Incorrect answer options:

To decrease airway inflammation. While reducing airway inflammation is a crucial aspect of asthma management, this is typically achieved with corticosteroids rather than beta-adrenergic agonists. Inhaled corticosteroids are used to control and prevent inflammation over the long term, whereas beta-adrenergic agonists provide rapid relief by dilating the bronchioles.

To reduce the risk of secondary infections. Beta-adrenergic agonists do not have an effect on preventing or treating infections. Preventing secondary infections typically involves other interventions, such as proper hygiene and possibly the use of antibiotics if a bacterial infection is present.

To minimize postnasal drip. Postnasal drip is often associated with conditions like allergies or sinusitis and is not directly related to asthma management. Medications such as antihistamines or nasal corticosteroids are more appropriate for managing postnasal drip.

EXPLANATION

✔Correct answer:

Epiglottitis. Epiglottitis is always considered a medical emergency due to the risk of sudden airway obstruction. It is characterized by the inflammation and swelling of the epiglottis, which can rapidly lead to severe respiratory distress and potentially life-threatening airway blockage. Immediate medical intervention is crucial to secure the airway and provide appropriate treatment to prevent asphyxiation and other serious complications.

Think of epiglottitis as a fire starting in a small, enclosed space. Just as a fire can quickly spread and become deadly without prompt intervention, epiglottitis can rapidly cause severe airway obstruction, making quick medical action essential to prevent disaster.

The epiglottis is a small flap of tissue that covers the trachea during swallowing to prevent food from entering the airway. In epiglottitis, the epiglottis becomes inflamed and swollen, which can block the airway and impede breathing. Symptoms of epiglottitis include high fever, severe sore throat, difficulty swallowing, drooling, and stridor (a high-pitched sound during breathing). Immediate medical treatment, including securing the airway and administering antibiotics, is vital to manage this condition.

✘Incorrect answer options:

Asthma. While asthma can be life-threatening and require urgent care during severe attacks, it is not always an emergency. Chronic asthma is typically managed with long-term medication and lifestyle adjustments. However, status asthmaticus, a severe and unresponsive asthma attack, is a medical emergency.

Laryngotracheobronchitis (LTB). Also known as croup, LTB is typically caused by viral infections and is usually not a medical emergency. It can often be managed with supportive care at home. However, severe cases may require medical attention to manage respiratory distress.

Cystic fibrosis (CF). Cystic fibrosis is a chronic genetic condition that affects the respiratory and digestive systems. While individuals with CF may experience acute exacerbations that require medical intervention, the condition itself is managed with ongoing treatment and care, and is not always an emergency.

EXPLANATION

✔Correct answer:

Status asthmaticus. Explanation and Reasoning: Status asthmaticus is the term used to describe a severe, life-threatening asthma attack that does not respond to standard treatments, such as bronchodilators and corticosteroids. This condition requires immediate medical intervention as it can lead to respiratory failure and death if not treated promptly. Patients experiencing status asthmaticus may present with symptoms such as severe dyspnea, cyanosis, and a lack of wheezing due to minimal air movement in the lungs.

Imagine a clogged drain that won't clear despite using a plunger and drain cleaner. This persistent blockage requires professional intervention to prevent flooding. Similarly, in status asthmaticus, the airways are so constricted that standard asthma treatments are ineffective, necessitating urgent medical care to prevent serious complications.

In status asthmaticus, the airways undergo severe bronchoconstriction, inflammation, and mucus production. This combination leads to significant airway obstruction, making it extremely difficult for the patient to breathe. The prolonged lack of adequate airflow can result in hypoxia and hypercapnia, leading to respiratory acidosis and potentially respiratory arrest. Intensive care, including the use of mechanical ventilation, may be necessary to stabilize the patient.

✘Incorrect answer options:

Reactive airway disease. This term is a nonspecific diagnosis that describes airway hyperreactivity but does not specifically refer to severe, unresponsive asthma attacks. It is often used as a preliminary diagnosis before confirming asthma or other conditions.

Intrinsic asthma. Intrinsic asthma, also known as non-allergic asthma, is triggered by non-allergenic factors such as stress, exercise, or infections. While intrinsic asthma can lead to severe attacks, it does not specifically describe the severe, unresponsive nature of status asthmaticus.

Extrinsic asthma. Extrinsic asthma, also known as allergic asthma, is triggered by allergens like pollen, dust mites, or pet dander. Similar to intrinsic asthma, it can cause severe asthma attacks but does not define the critical, unresponsive condition seen in status asthmaticus.

EXPLANATION

✔Correct answer:

500 mg. Explanation and Reasoning: To accurately calculate the correct dosage of amoxicillin for Jonathan, Nurse Thompson needs to convert Jonathan's weight from pounds to kilograms and then apply the recommended dosage of the medication.

1. Convert Jonathan’s weight from pounds to kilograms:
   • Jonathan’s weight = 44 lbs
   • 1 kilogram = 2.2 pounds
   • Jonathan’s weight in kg = 44 lbs / 2.2 = 20 kg
2. Calculate the total daily dose using the recommended dose of 50 mg/kg/day:
   • Total daily dose = 20 kg * 50 mg/kg/day = 1000 mg/day
3. Divide the total daily dose into two divided doses:
   • Dose per administration = 1000 mg / 2 = 500 mg

Therefore, Nurse Thompson should administer 500 mg of amoxicillin per dose, given twice daily. This calculation confirms that this option is correct.

 Imagine Jonathan needs to drink 1000 ml of water a day, divided into two servings. Each serving would be 500 ml, ensuring he gets the correct amount evenly spread out throughout the day.

✘Incorrect answer options:

1000 mg. This represents the total daily dose, not the divided dose. Administering 1000 mg at once is incorrect and could be harmful.

750 mg. This dose is incorrect because it does not align with the calculated requirement based on Jonathan's weight and the recommended dosage. Administering 750 mg per dose would result in an excessive total daily dose.

250 mg. This dose is too low for Jonathan’s weight and does not meet the recommended dosage requirements. Administering 250 mg per dose would total only 500 mg daily, which is insufficient.