Nokea
Identify the causative agent of dengue fever.
- A. Fomite
- B. Bacteria
- C. Vector
- D. Virus
Correct Answer: D
Rationale: The causative agent of dengue fever is a virus. Dengue fever is primarily transmitted to humans by the bite of infected Aedes mosquitoes, particularly Aedes aegypti and Aedes albopictus. These mosquitoes act as vectors, carrying and transmitting the dengue virus (specifically four closely related but antigenically different serotypes: DEN-1, DEN-2, DEN-3, and DEN-4) to humans during the feeding process. The virus then replicates in the human body, causing symptoms of dengue fever. Therefore, the correct answer is D. Virus.
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Which should be emhpasize by the nurse in her health teachings
- A. Jogging a mile a day
- B. Vigourous exercise
- C. No need to diet
- D. Weight reduction
Correct Answer: D
Rationale: Weight reduction is the most important focus in the health teachings provided by the nurse. Maintaining a healthy weight is crucial for overall well-being and can significantly reduce the risk of various health conditions such as heart disease, diabetes, and certain cancers. By emphasizing weight reduction, the nurse can help improve the patient's overall health and quality of life. Jogging a mile a day and vigorous exercise are beneficial for weight management, but it is important to address the root cause of potential health problems which in this case may be excess weight. Moreover, emphasizing the importance of weight reduction does not necessarily mean encouraging extreme dieting; instead, it involves promoting a balanced and healthy approach to eating and physical activity.
While Mrs. Mely is on TPN she suddenly complained of slight chest pain, dyspnea and appears cyanotic. You suspect that she is experiencing what possible IMMEDIATE complication?
- A. Sepsis due to IV 1ine
- B. Hyperglycemia.
- C. Air embolism
- D. Allergic reaction to TPN
Correct Answer: C
Rationale: The symptoms described in the scenario - chest pain, dyspnea, and cyanosis - are indicative of a potential air embolism. Air embolism occurs when air enters the bloodstream, leading to blockages in blood vessels and impeding oxygen delivery to tissues. In patients receiving Total Parenteral Nutrition (TPN) through intravenous lines, the risk of air embolism exists during line manipulations, disconnections, or improper priming of the tubing. The sudden onset of symptoms like chest pain and cyanosis in a patient on TPN should raise suspicion for an air embolism, as it requires immediate intervention to prevent further complications such as cardiac arrest or stroke.
A patient with acute respiratory distress syndrome (ARDS) develops refractory hypoxemia despite maximal ventilatory support and prone positioning. Which of the following adjunctive therapies is most likely to improve oxygenation and reduce mortality in this patient?
- A. High-frequency oscillatory ventilation (HFOV)
- B. Continuous renal replacement therapy (CRRT)
- C. Extracorporeal membrane oxygenation (ECMO)
- D. Inhaled nitric oxide (iNO)
Correct Answer: C
Rationale: In a patient with ARDS who is experiencing refractory hypoxemia despite maximal ventilatory support and prone positioning, the use of extracorporeal membrane oxygenation (ECMO) is a potentially life-saving adjunctive therapy. ECMO works by providing temporary support for gas exchange outside the body, allowing the lungs to rest and heal while providing adequate oxygenation and carbon dioxide removal. The use of ECMO has been associated with improved oxygenation and reduced mortality in severe cases of ARDS, especially in patients who fail conventional therapies. High-frequency oscillatory ventilation (HFOV) has not consistently shown mortality benefit in ARDS, continuous renal replacement therapy (CRRT) is not directly indicated for hypoxemia in ARDS, and inhaled nitric oxide (iNO) has shown limited benefit in improving oxygenation in ARDS without a clear impact on mortality.
A patient presents with watery diarrhea, abdominal cramps, and nausea after consuming contaminated water from a stream during a camping trip. Laboratory tests reveal oocysts in the stool sample. Which of the following parasites is most likely responsible for this infection?
- A. Giardia lamblia
- B. Entamoeba histolytica
- C. Cryptosporidium parvum
- D. Cyclospora cayetanensis
Correct Answer: C
Rationale: Cryptosporidium parvum is a protozoan parasite that commonly causes waterborne illness characterized by watery diarrhea, abdominal cramps, and nausea. This parasite is often transmitted through contaminated water sources such as streams or lakes. Laboratory tests identifying oocysts in the stool sample are indicative of Cryptosporidium infection. Giardia lamblia can also cause similar symptoms, but the presence of oocysts points more towards Cryptosporidium in this case. Entamoeba histolytica causes amoebic dysentery with bloody diarrhea and is usually associated with fecal-oral transmission through contaminated food or water. Cyclospora cayetanensis typically causes prolonged watery diarrhea and is associated with the ingestion of contaminated food or water.
The client being admitted to the oncology unit conveys his wishes regarding resuscitation in the event of cardiopulmonary arrest. The nurse advises the client that it would be in his best interest to obtain which document?
- A. will
- B. Proof of health care power of attorney
- C. living wil l
- D. proxy directive
Correct Answer: C
Rationale: A living will is a legal document that outlines a person's preferences and wishes regarding medical treatment, including resuscitation, in the event they become unable to communicate or make decisions. In this scenario, the client being admitted to the oncology unit wants to convey his wishes regarding resuscitation in case of cardiopulmonary arrest. A living will helps ensure that these wishes are known and respected by healthcare providers and loved ones. While a will addresses how a person's assets should be distributed after death and a health care power of attorney designates someone to make medical decisions on the person's behalf, a living will specifically focuses on healthcare preferences and treatment decisions. A proxy directive is similar to a health care power of attorney, designating someone to make healthcare decisions for the person if they are unable to do so themselves.