The patient's family is asking questions about the medications used in the treatment for shock. The nurse explains that dopamine is one of the drugs being used and that it works:
(Select All that Apply.)
At high doses, to treat anaphylaxis.
At high doses, to increase cardiac output.
At low doses, to cause increased blood flow to the kidneys.
At low doses, to treat anaphylaxis.
To cause vasoconstriction and increase blood pressure.
Correct Answer : B,C,E
A. At high doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis. Anaphylaxis is typically managed with medications such as epinephrine, antihistamines, and corticosteroids.
B. At high doses, to increase cardiac output: Dopamine is a medication commonly used in the treatment of shock, particularly in cases of hypotension. At higher doses, dopamine acts as a positive inotrope and increases cardiac contractility, thereby improving cardiac output and increasing blood pressure.
C. At low doses, to cause increased blood flow to the kidneys: At lower doses, dopamine primarily acts on dopaminergic receptors in the renal vasculature, leading to vasodilation of the renal blood vessels and increased renal perfusion. This can help improve renal blood flow and urine output, making it beneficial in cases of renal hypoperfusion or acute kidney injury.
D. At low doses, to treat anaphylaxis: Dopamine is not used to treat anaphylaxis at any dose. Anaphylaxis is managed with medications such as epinephrine, which acts on multiple receptors to reverse the systemic effects of the allergic reaction.
E. To cause vasoconstriction and increase blood pressure: Dopamine can also cause vasoconstriction, particularly at higher doses. This effect is mediated through its action on alpha-adrenergic receptors, leading to peripheral vasoconstriction and an increase in systemic vascular resistance, which in turn helps increase blood pressure.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A) Sedation:
Sedation is not an adverse effect commonly associated with oxymetazoline nasal spray. Oxymetazoline works by constricting blood vessels in the nasal passages to relieve congestion and does not typically cause sedation.
B) Constipation:
Constipation is not an adverse effect associated with oxymetazoline nasal spray. Constipation is more commonly associated with medications that affect the gastrointestinal system, such as opioid analgesics or certain anticholinergic medications.
C) Productive cough:
Productive cough is not an adverse effect commonly associated with oxymetazoline nasal spray. Productive cough refers to a cough that produces mucus or phlegm and is more often associated with respiratory infections or chronic respiratory conditions.
D) Nasal congestion.
Oxymetazoline (Afrin) is a nasal decongestant spray commonly used for the temporary relief of nasal congestion associated with allergic rhinitis or the common cold. However, if oxymetazoline nasal spray is used for more than 3 to 5 consecutive days, it can lead to rebound congestion, also known as rhinitis medicamentosa. Rebound congestion occurs when the nasal mucosa becomes dependent on the medication for vasoconstriction, and upon discontinuation, nasal congestion worsens. Therefore, prolonged use of oxymetazoline nasal spray can result in a worsening of nasal congestion as an adverse effect.
Correct Answer is C
Explanation
A) Theophylline:
Theophylline is a bronchodilator medication that is used for the long-term management of asthma and chronic obstructive pulmonary disease (COPD). It has a slower onset of action compared to short-acting beta-agonists like albuterol and is not typically used as the initial treatment for acute asthma exacerbations.
B) Montelukast:
Montelukast is a leukotriene receptor antagonist used for the long-term control and prevention of asthma symptoms, but it is not typically used as the initial treatment for acute asthma exacerbations. Its onset of action is slower compared to short-acting beta-agonists like albuterol.
C) Albuterol.
Albuterol is a short-acting beta agonist bronchodilator commonly used as a first-line treatment for acute asthma exacerbations. It works by quickly relaxing the smooth muscles of the airways, leading to rapid bronchodilation and improvement of airflow. This can help alleviate the patient's symptoms of shortness of breath and wheezing.
D) Salmeterol:
Salmeterol is a long-acting beta-agonist bronchodilator used for the maintenance treatment of asthma and COPD, but it is not typically used as the initial treatment for acute asthma exacerbations. Its onset of action is slower compared to short-acting beta-agonists like albuterol, and it is not recommended for rapid relief of acute symptoms.
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