Nursing Elites

1. Which oxygen delivery system would provide the highest concentrations of oxygen to the client?

• A. Venturi mask
• B. Partial rebreather mask
• C. Non-rebreather mask
• D. Simple face mask

Correct answer: C

Rationale: The correct answer is the non-rebreather mask. This oxygen delivery system has a one-way valve that prevents exhaled air from entering the reservoir bag and one or more valves covering the air holes on the face mask itself to prevent the inhalation of room air but allow exhalation of air. When a tight seal is achieved around the mask, up to 100% of oxygen is available. Choice A, the Venturi mask, delivers precise oxygen concentrations but not as high as the non-rebreather mask. Choice B, the partial rebreather mask, allows the client to rebreathe some exhaled air, resulting in lower oxygen concentrations than the non-rebreather mask. Choice D, the simple face mask, delivers low to moderate oxygen concentrations and is not designed to provide the highest concentrations like the non-rebreather mask.

2. The nurse is caring for a 10-year-old on admission to the burn unit. One assessment parameter that will indicate that the child has adequate fluid replacement is:

• A. Urinary output of 30 ml per hour
• B. No complaints of thirst
• C. Increased hematocrit
• D. Good skin turgor around burn

Correct answer: A

Rationale: For a child of this age, this is adequate output, yet does not suggest overload. Disruption of sodium-ATPase activity presumably causes an intracellular sodium shift which contributes to hypovolemia and cellular edema. Heat injury also initiates the release of inflammatory and vasoactive mediators. These mediators are responsible for local vasoconstriction, systemic vasodilation, and increased transcapillary permeability. Increase in transcapillary permeability results in a rapid transfer of water, inorganic solutes, and plasma proteins between the intravascular and interstitial spaces.

3. In which of the following conditions would a healthcare provider not administer erythromycin?

• A. Campylobacteriosis infection
• B. Legionnaires disease
• C. Pneumonia
• D. Multiple Sclerosis

Correct answer: D

Rationale: Erythromycin is an antibiotic used to treat bacterial infections. Multiple sclerosis (MS) is an autoimmune disease affecting the central nervous system, involving the brain and spinal cord. Since MS is not caused by bacteria, administering erythromycin would not be appropriate. Campylobacteriosis infection, Legionnaires disease, and pneumonia are bacterial infections that can be treated with erythromycin, making them incorrect choices for conditions where erythromycin would not be administered.

4. A client presents with symptoms of a sore throat, swollen lymph nodes in the neck, fever, chills, and extreme fatigue. Based on these symptoms, which of the following illnesses could the nurse consider for this client?

• A. Methicillin-resistant Staphylococcus aureus (MRSA)
• B. Hepatitis B
• C. Infectious mononucleosis
• D. Norovirus infection

Correct answer: C

Rationale: Infectious mononucleosis is a viral disease caused by the Epstein-Barr virus. The symptoms of sore throat, fever, chills, swollen lymph nodes, and extreme fatigue are characteristic of infectious mononucleosis. The diagnosis is confirmed through the client's history and blood tests for the Epstein-Barr virus. Methicillin-resistant Staphylococcus aureus (MRSA) presents with localized skin infections, not the systemic symptoms described. Hepatitis B typically presents with jaundice, abdominal pain, and liver inflammation, not the symptoms described. Norovirus infection commonly causes gastrointestinal symptoms like vomiting and diarrhea, not the symptoms presented by the client.

5. A patient is scheduled for a magnetic resonance imaging (MRI) scan for suspected lung cancer. Which of the following is a contraindication to the study for this patient?

• A. The patient is allergic to shellfish.
• B. The patient has a pacemaker.
• C. The patient suffers from claustrophobia.
• D. The patient takes antipsychotic medication.

Correct answer: B

Rationale: The correct answer is that the patient has a pacemaker. A pacemaker is a contraindication to MRI scanning due to the interference with the magnetic fields of the MRI scanner. This interference can potentially deactivate the pacemaker, putting the patient at risk. Patients with cardiac implantable electronic devices (CIED) are at risk for inappropriate device therapy, device heating/movement, and arrhythmia during MRI. This necessitates special precautions such as scheduling in a CIED blocked slot or having electrophysiology nurse or technician support. It is important to ensure that the patient's pacemaker is MRI conditional before proceeding with the scan. The other choices, such as being allergic to shellfish, suffering from claustrophobia, or taking antipsychotic medication, are not direct contraindications to undergoing an MRI scan for suspected lung cancer.

Similar Questions