Exam #5 Asthma

As status asthmaticus worsens, the nurse would expect which acid-base imbalance?

Respiratory acidosis As status asthmaticus worsens, the PaCO2 increases and the pH decreases, reflecting respiratory acidosis.

A 4-week-old infant is diagnosed with acute bronchiolitis. The parent states, "I do not know how the baby got this!" How should the nurse respond?

"Has your infant been around any crowds?" Acute bronchiolitis is caused by a viral infection, most often, respiratory syncytial virus. Viruses are often spread between groups of people in close contact. Hereditary and environmental complications do not relate to this disorder.

A child with asthma has been monitoring his peak expiratory flow rate (PEFR) and has been maintaining it within 90% of his personal best. Today, the child is experiencing symptoms and his PEFR is at 40% of his personal best. The child's mother calls the office and asks the nurse what she should do. What would the nurse instruct the mother to do first?

"Have him use his short-acting bronchodilator right away." The child's symptoms and drop in PEFR suggest a medical alert or "red" situation, indicating the need for the short-acting bronchodilator and then a trip to the office or emergency department. The child should use his short-acting bronchodilator first and then go to the physician's or nurse practitioner's office or emergency room. Waiting for a greater drop in his PEFR readings would be inappropriate because the child is experiencing an acute condition that warrants immediate attention. The child is experiencing an acute situation and requires immediate attention. A low-dose steroid inhaler would not be appropriate because it would not help his bronchospasm.

An adolescent client is prescribed a leukotriene receptor antagonist as a part of a medication regime to manage his/her asthma. Which statement made by the client requires additional education on this classification of medications?

"I need to take the medication when I start to have problems breathing." These drugs are not indicated for the treatment of acute asthmatic attacks because they do not provide any immediate effects on the airways. Patients need to be cautioned that they should not rely on these drugs for relief from an acute asthmatic attack. The remaining statements are all accurate information regarding this classification of medications.

Acute-onset bronchial asthma causes wheezing and breathlessness as a result of which of the following?

Airway inflammation Bronchial asthma represents a reversible form of obstructive airway disease caused by narrowing of airways due to bronchospasms, inflammation, and increased airway secretions; this inflammatory process produces recurrent episodes of airway obstruction, characterized by wheezing, breathlessness, chest tightness, and cough. Vascular flow through the lungs is unaffected by the airway inflammation and bronchospasms. Hyperinflated alveoli are characteristic of the emphysema type of obstructive pulmonary disease. Compression atelectasis is associated with high external pressure that blocks lung expansion.

A client with asthma is prescribed a short acting beta-adrenergic (SABA) for quick relief. Which of the following is the most likely drug to be prescribed?

Albuterol Albuterol (Proventil), a SABA, is given to asthmatic patients for quick relief of symptoms. Ipratropium bromide (Atrovent) is an anticholinergic. Ipratropium bromide and albuterol sulfate (Combivent) is a combination SABA/anticholinergic, and Fluticasone propionate (Flonase) is a corticosteroid.

A nurse is caring for a client with status asthmaticus. Which medication should the nurse prepare to administer?

An inhaled beta2-adrenergic agonist An inhaled beta2-adrenergic agonist helps promote bronchodilation, which improves oxygenation. Although an I.V. beta2-adrenergic agonist can be used, the client needs be monitored because of the drug's greater systemic effects. The I.V. form is typically used when the inhaled beta2-adrenergic agonist doesn't work. A corticosteroid is slow acting, so its use won't reduce hypoxia in the acute phase.

One method of reducing bronchoconstriction is removing excessive secretions from the respiratory tract. Patients can take several actions on their own to help manage secretions. Which will not help manage secretions?

Asking the physician to prescribe inhaled corticosteroids Although inhaled corticosteroids may be prescribed in the treatment of respiratory disorders, they act by reducing inflammation, not by removing secretions from the airway. The patient can thin secretions and make them easier to remove by consuming adequate amounts of fluids each day. The patient can also take mechanical measures, such as practicing deep breathing and coughing, to remove secretions.

A nurse is providing discharge planning for a 45-year-old woman who has a prescription for oral albuterol. The nurse will question the patient about her intake of which of the following?

Coffee The nurse should assess the patient's intake of caffeine, including coffee, tea, soda, cocoa, candy, and chocolate. Caffeine has sympathomimetic effects that may increase the risk for adverse effects. Alcohol, salt, and vitamin C intake is important to assess, but does not potentiate the effects of albuterol.

Which of the following is a common irritant that acts as a trigger of asthma?

Esophageal reflux Esophageal reflux, viral respiratory infections, cigarette smoke, and exercise are all irritants that can trigger asthma. Peanuts, aspirin sensitivity, and molds are antigens

A child who is experiencing an exacerbation of asthma is brought to the emergency department by his parents. When reviewing the child's laboratory and diagnostic test results, which is consistent with the diagnosis?

Hyperinflation of lungs on chest radiograph The chest radiograph usually reveals hyperinflation. Peak expiratory flow rate usually is decreased during an exacerbation. With arterial blood gases, carbon dioxide retention is usually noted. Although pulmonary function tests are useful in determining the degree of disease, they are not useful during an attack.

Asthma is cause by which type of response?

IgE-mediated Atopy, the genetic predisposition for the development of an IgE-mediated response to allergens, is the most common identifiable predisposing factor for asthma. Chronic exposure to airway allergens may sensitize IgE antibodies and the cells of the airway.

A client is prescribed salmeterol. The nurse would expect this drug to be administered by which route?

Inhalation Salmeterol is administered via inhalation.

What is histamine, a mediator that supports the inflammatory process in asthma, secreted by?

Mast cells Mast cells, neutrophils, eosinophils, and lymphocytes play key roles in the inflammation associated with asthma. When activated, mast cells release several chemicals called mediators. One of these chemicals is called histamine.

During a class for caregivers of children with asthma, a caregiver asks the nurse the following question when medications are being discussed. "They told me about a plastic device my child can hold in his a hand which will give him a premeasured and exact amount of his corticosteroid." The nurse recognizes that the caregiver is most likely referring to which device?

Metered-dose inhaler In the treatment of asthma, corticosteroids are most often delivered by metered-dose inhaler ([MDI], which is a hand-held plastic device that delivers a premeasured dose). The medication cup and needleless syringe may deliver PO medications, but most often corticosteroids are not given PO in the treatment of asthma, and those would not be premeasured and an exact dosage like a metered-dose inhaler would be. Corticosteroids are not administered by nebulizer.

A nurse caring for a client with asthma monitors respiratory function. Which data indicate the client has moderate persistent asthma?

PEF 450 mL in AM, 300 mL at noon, symptoms occur daily Asthma can be rated at four levels: mild intermittent, mild persistent, moderate persistent, and severe persistent. In mild intermittent asthma the symptoms occur 2 or fewer times per week and the client is asymptomatic between attacks with a normal peak expiratory flow (PEF). In mild persistent asthma the symptoms occur more than 2 times per week, but not daily. Exacerbations may affect activity. The PEF has 20-30 percent variability. Moderate persistent asthma has daily symptoms, exacerbations affect activity, and the PEF variability is greater than 30 percent. In severe persistent asthma the symptoms are continual with frequent exacerbations and the PEF is less than 60 percent of what is predicted, with variability more than 30 percent.

Pain is an expected assessment finding in clients who have which lung disease?

Pleuritis The effects of asthma, PAH, and pleural effusion may be profound, but none is typically accompanied by acute pain. Pleuritis, in contrast, is associated with characteristic pleural pain.

A patient is being treated for status asthmaticus. What danger sign does the nurse observe that can indicate impending respiratory failure?

Respiratory acidosis In status asthmaticus, increasing PaCO2 (to normal levels or levels indicating respiratory acidosis) is a danger sign signifying impending respiratory failure. Understanding the sequence of the pathophysiologic processes in status asthmaticus is important for understanding assessment findings. Respiratory alkalosis occurs initially because the patient hyperventilates and PaCO2 decreases. As the condition continues, air becomes trapped in the narrowed airways and carbon dioxide is retained, leading to respiratory acidosis.

A female client presents to the emergency department with acutely deteriorating asthma. Her husband tells the nurse that his wife takes salmeterol. He then tells the nurse that he gave her three extra puffs when she became ill. What statement is correct in this situation?

Salmeterol is contraindicated based on his wife's condition. The FDA has issued a black box warning that initiating salmeterol in people with significantly worsening or acutely deteriorating asthma may be life threatening.

When describing the action of mast cell stabilizers, which of the following would the nurse include as being inhibited?

Slow-reacting substance of anaphylaxis Mast cell stabilizers work at the cellular level to inhibit the release of histamine and the release of slow-reacting substance of anaphylaxis. Epinephrine is not affected by mast cell stabilizers. Xanthines are thought to work by directly affecting the mobilization of calcium within the cell by stimulating two prostaglandins.

The nurse is caring for a child who has been admitted with a possible diagnosis of cystic fibrosis. Which laboratory/diagnostic tools would most likely be used to help determine the diagnosis of this child?

Sweat sodium chloride test Sweat sodium chloride tests are used for determining the diagnosis of cystic fibrosis. Purified protein derivative tests are used to detect TB. Blood culture and sensitivity is done to determine the causative agent as well as the anti-infective needed to treat an infection. Pulmonary function tests are diagnostic tools for the child with asthma and indicate the amount of obstruction in the bronchial airways, especially in the smallest airways of the lungs.

The nurse is instructing the patient with asthma in the use of a newly prescribed leukotriene receptor antagonist. What should the nurse be sure to include in the education?

The patient should take the medication an hour before meals or 2 hours after a meal. The nurse should instruct the patient to take the leukotriene receptor antagonist at least 1 hour before meals or 2 hours after meals.

A client with asthma has developed obstruction of the airway. Which of the following does the nurse understand as having potentially contributed to this problem? Choose all that apply.

Thick mucus Swelling of bronchial membranes Airway remodeling As asthma becomes more persistent, inflammation progresses and airway edema, mucus hypersecretion, and formation of mucus plugs can occur. Airway remodeling may occur in response to chronic inflammation, causing further airway narrowing. Destruction of the alveolar wall does not occur with asthma.

The caregivers of an 8-year-old bring their child to the pediatrician and report that the child has not had breathing problems before, but since taking up lacrosse the child has been coughing and wheezing at the end of every practice and game. Their friend's child has often been hospitalized for asthma; they are concerned that their child has a similar illness. The nurse knows that because the problems seem to be directly related to exercise, it is likely that the child will be able to be treate

a bronchodilator and mast cell stabilizers. Mast cell stabilizers are used to help decrease wheezing and exercise-induced asthma attacks. A bronchodilator often is given to open up the airways just before the mast cell stabilizer is used. Corticosteroids are anti-inflammatory drugs used to control severe or chronic cases of asthma. Leukotriene inhibitors are given by mouth along with other asthma medications for long-term control and prevention of mild, persistent asthma.

A child is experiencing an acute exacerbation of asthma. Which quick-acting treatment is most appropriate for this client?

beta-adrenergic agonists A beta-adrenergic agonist would be the best option to use in an acute exacerbation of asthma. The quick-relief medications include the short-acting beta-adrenergic agonists, anticholinergic agents, and systemic corticosteroids. The short-acting beta-adrenergic agonists relax bronchial smooth muscle and provide prompt relief of symptoms, usually within 30 minutes. All of the other drugs would be used as maintenance treatment.

A caregiver calls the pediatrician's office and reports to the nurse that her 4-year-old, who was fine the previous day, complained of a sore throat early in the morning and now has a temperature of 102.6°F (39.2°C). The caregiver has tried to get the child to nap but the child gets panicky, immediately sits back up, and leans forward with her mouth open and tongue out when the caregiver encourages her to lie down. The nurse suspects the child has which condition?

epiglottitis Epiglottitis is acute inflammation of the epiglottis that most often affects children ages 2 to 7 years. The child may have been well or may have had a mild upper respiratory infection before the development of a sore throat (difficulty swallowing) and a high fever of 102.2℉ to 104℉ (39℃ to 40℃). The child is very anxious and prefers to breathe by sitting up and leaning forward with the mouth open and the tongue out. This is called the "tripod" position. Immediate emergency attention is necessary.

The nurse is collecting data on a child admitted with a respiratory concern. The nurse notes that the child is anxious and sitting forward with the neck extended to breathe. The signs the nurse noted indicate the child likely has:

epiglottitis. The child with epiglottitis is very anxious and prefers to breathe by sitting forward with the neck extended. Immediate emergency attention is necessary. The child with asthma would have wheezing and distress trying to breathe. The child with cystic fibrosis would not have respiratory distress unless ill with respiratory infection. The drooling, leaning forward, and appearing distressed are not manifestations of TB.

The nurse is providing education to the parents of a child who has been newly diagnosed with asthma. During teaching, the nurse should explain that asthma attacks occur when mast cells release substances that cause what reaction?

inflammation. When lung tissues are exposed to causative stimuli, mast cells release substances that cause bronchoconstriction and inflammation, increased capillary permeability and fluid leakage, and changes in the mucus-secreting properties of the airway epithelium.

A client is prescribed a leukotriene receptor antagonist. The nurse should evaluate the effectiveness of the medication therapy based on the long term management of symptoms associated with which respiratory condition?

Asthma Leukotriene receptor antagonists block or antagonize receptors for the production of leukotrienes D4 and E4, thus blocking many of the signs and symptoms of asthma. This class of medication is not typically associated with the long term management of any of the other options.

The nurse is providing education to a client with asthma on the therapeutic action of inhaled corticosteroid agents. How will the nurse describe the action?

Inhaled corticosteroid agents reduce airway inflammation. Inhaled corticosteroid agents suppress the release of inflammatory mediators, block the generations of cytokines, and decrease the recruitment of airway eosinophils. Inhaled corticosteroid agents do not depress the central nervous system or reduce bronchodilation or respiratory rate.

The nurse is caring for a child who has been admitted with a diagnosis of asthma. What laboratory/diagnostic tool would likely have been used for this child?

Pulmonary functions test Pulmonary function tests are valuable diagnostic tools for the child with asthma and indicate the amount of obstruction in the bronchial airways, especially in the smallest airways of the lungs. Purified protein derivative tests are used to detect TB. Sweat sodium chloride tests are used for determining the diagnosis of cystic fibrosis. Blood culture and sensitivity is done to determine the causative agent as well as the anti-infective needed to treat an infection.

A client, experiencing respiratory distress related bronchi constriction, will benefit from what therapeutic action provided by anticholinergic medication therapy?

Relaxation of smooth muscle Anticholinergics can be used as bronchodilators because of their effect on the vagus nerve, resulting in relaxation of smooth muscle in the bronchi, which leads to bronchodilation. None of the other options describe the bronchial dilation affected of the anticholinergic classification of medications.

The nurse is reinforcing teaching about medications with the parents of a 2-year-old who has cystic fibrosis. The nurse suggests that pancreatic enzymes may be given by which method?

Sprinkled onto the food Pancreatic enzymes are used in the treatment of cystic fibrosis and are given by opening the capsule and sprinkling the medication on the child's food. If the child with cystic fibrosis has an infection, IV medications may be given, but this is not on a daily basis. Most children do not have a gastrostomy tube. Many of these drugs used in the treatment of asthma can be given either by a nebulizer (tube attached to a wall unit or cylinder that delivers moist air via a face mask) or a metered-dose inhaler [MDI], which is a hand-held plastic device that delivers a premeasured dose.