The nurse is caring for a patient with wheezes, shortness of breath, urticaria and itching after receiving a new antibiotic The nurse understands that the epinephrine in this situation would be administered intramuscularly (IM), rather than intravenously (IV) because:
IM epinephrine is the fastest route of administration
IV epinephrine is only administered during cardiac arrest
Epinephrine would not be administered in this situation
IM epinephrine is less concentrated than IV.
The Correct Answer is B
A) IM epinephrine is the fastest route of administration:
While epinephrine is often administered intramuscularly in cases of anaphylaxis and allergic reactions, the speed of action is not the primary reason for choosing this route over intravenous (IV) administration in this situation. Intramuscular administration of epinephrine allows for a rapid onset of action, but it is not necessarily the fastest route compared to IV. IV administration would act more quickly in an emergency setting where immediate blood circulation is critical, but IM is preferred in allergic reactions to prevent excessive systemic effects and to avoid rapid peaks in plasma levels.
B) IV epinephrine is only administered during cardiac arrest:
Epinephrine is generally administered intravenously during life-threatening situations such as cardiac arrest or severe shock, where immediate circulatory effects are needed. In cases of anaphylaxis, however, intramuscular (IM) administration of epinephrine is the preferred route because it allows for a more controlled absorption rate and reduces the risk of excessive blood pressure and other adverse cardiovascular effects. This is the correct rationale for why epinephrine is administered IM in the context of an allergic reaction.
C) Epinephrine would not be administered in this situation:
Epinephrine is the first-line treatment for severe allergic reactions and anaphylaxis, especially in cases where symptoms like wheezing, shortness of breath, urticaria, and itching are present. Therefore, withholding epinephrine is not an appropriate response in this situation. Immediate intervention with epinephrine is critical to reverse the symptoms of anaphylaxis and prevent further respiratory distress or cardiovascular collapse.
D) IM epinephrine is less concentrated than IV:
The concentration of epinephrine used for IM and IV administration is the same. The primary reason for choosing the IM route over the IV route is the slower absorption and the fact that it minimizes the risk of a rapid increase in systemic blood pressure and other adverse reactions. While IM epinephrine may be absorbed more slowly than IV, its concentration is appropriate for treating anaphylaxis effectively. The choice of IM is based on safety and controlled response, not on the concentration of the drug.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) Respiratory compromise
A spinal cord injury (SCI) at the level of C-3 (cervical spine) results in the loss of function of the diaphragm, which is innervated by the phrenic nerve originating from C-3 to C-5. As a result, the patient is at high risk for respiratory compromise and may require mechanical ventilation. Respiratory failure is a leading cause of death and complications in individuals with high cervical spinal cord injuries, particularly when the injury is at or above C-4.
B) Hypertension
Although spinal cord injuries can cause autonomic dysreflexia (a condition where the body’s autonomic nervous system overreacts to stimuli, leading to dangerously high blood pressure), this condition is more common in individuals with injuries above T6. At C-3, respiratory issues are the primary concern, and hypertension is not the leading cause of complications.
C) Septic shock
Septic shock can occur after any significant injury, especially if the individual develops infections (e.g., from urinary retention, pressure ulcers, or pneumonia). However, septic shock is not the main cause of complications or death related to a C-3 spinal cord injury.
D) Bradycardia
Bradycardia (a slow heart rate) can indeed be a concern in patients with SCI, especially those with injuries at or above the T1 level. However, at the level of C-3, the main cause of complications is respiratory failure, not bradycardia. While bradycardia can occur due to disruption of sympathetic nervous system control, respiratory compromise is the most critical immediate concern.
Correct Answer is A
Explanation
A) Take the prescribed anticoagulant specifically as directed:
Clients with mechanical heart valves are at an increased risk of developing blood clots, and therefore, anticoagulation therapy (often warfarin or another blood thinner) is necessary to prevent thromboembolic events. It is essential for the client to take the prescribed anticoagulant exactly as directed, ensuring therapeutic levels are maintained while minimizing the risk of bleeding.
B) Stop taking your antihypertensive medications until checking:
This instruction is not appropriate after heart surgery. Antihypertensive medications are typically necessary to manage blood pressure and reduce the strain on the heart. Stopping antihypertensive medications without consulting the healthcare provider could result in elevated blood pressure, which can put undue stress on the heart, especially after valve replacement surgery.
C) Avoid lifting objects ten pounds or greater for two days:
This statement is not appropriate for a client who has undergone open heart surgery. After heart surgery, particularly valve replacement, the client may be advised to avoid lifting heavy objects for a period of time (often 4-6 weeks) to prevent strain on the incision site and the heart. Two days of restriction is insufficient; longer periods of activity limitation are usually required to ensure proper healing.
D) Take your immunosuppressive medications daily in the morning:
Immunosuppressive medications are not typically prescribed for clients with mechanical heart valves. Immunosuppressive drugs are usually prescribed for clients who have had organ transplants (e.g., kidney, liver) to prevent organ rejection. Since the client in this scenario had a mitral valve replacement, immunosuppressants are not usually indicated unless there are specific complications, such as endocarditis or other infections.
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