Nokea
A patient with a history of stroke is at risk for impaired skin integrity due to immobility. Which nursing intervention is most effective in preventing pressure ulcers in this patient?
- A. Turning and repositioning the patient every 2 hours
- B. Massaging bony prominences regularly
- C. Applying heating pads to areas of erythema
- D. Using a pressure-reducing mattress
Correct Answer: A
Rationale: Turning and repositioning the patient every 2 hours is the most effective nursing intervention in preventing pressure ulcers in a patient with a history of stroke and immobility. Pressure ulcers, also known as bedsores, are caused by prolonged pressure on the skin, leading to reduced blood flow and tissue damage. By regularly turning and repositioning the patient, pressure is relieved from specific areas of the body, helping to prevent the development of pressure ulcers. This intervention helps to redistribute pressure, improve blood flow, and reduce the risk of skin breakdown, thus promoting skin integrity in immobile patients.
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Which of the following terms refers to the process by which antibodies coat the surface of pathogens, marking them for destruction by phagocytes or complement proteins?
- A. Opsonization
- B. Neutralization
- C. Agglutination
- D. Precipitation
Correct Answer: A
Rationale: Opsonization refers to the process by which antibodies bind to the surface of pathogens, marking them for destruction by phagocytes or complement proteins. This coating of antibodies enhances the ability of the immune system to recognize and eliminate the pathogens effectively. Phagocytes (such as macrophages and neutrophils) are better able to engulf and digest pathogens that have been opsonized, as the antibodies attached to the pathogen surface signal to the phagocytes that they are foreign invaders. This process is crucial in the body's immune response to infections and helps in clearing pathogens from the system.
A patient is going for a coronary arterial by-pass graft (CABG) due to a 4 blocked arterial blood vessels. A surgical team has been formed with the cardiac surgeon as the head. Who is the member of the health team that prepares the pre-operative orders for the patient?
- A. Cardiologist
- B. Surgeon
- C. Anesthesiologist
- D. Medical Internist
Correct Answer: C
Rationale: The member of the health team responsible for preparing pre-operative orders for a patient undergoing surgery, such as a coronary arterial bypass graft (CABG), is typically the anesthesiologist. Anesthesiologists are specialized physicians who are trained to administer anesthesia and manage the patient's well-being during surgery. They are responsible for assessing the patient's medical history, determining the appropriate anesthesia plan, and prescribing pre-operative medications. Cardiologists focus on diagnosing and treating heart conditions, surgeons perform the actual surgical procedure, and medical internists specialize in the diagnosis and non-surgical treatment of internal diseases. The anesthesiologist plays a crucial role in ensuring the safety and comfort of the patient before, during, and after surgery.
A postpartum client presents with persistent, severe headache, photophobia, and altered mental status. Which nursing action is most appropriate?
- A. Encouraging the client to rest in a dark, quiet room
- B. Providing acetaminophen for headache relief
- C. Notifying the healthcare provider immediately
- D. Offering a massage to relieve muscle tension
Correct Answer: C
Rationale: The most appropriate nursing action when a postpartum client presents with persistent, severe headache, photophobia, and altered mental status is to notify the healthcare provider immediately. These symptoms could be indicative of serious conditions such as postpartum preeclampsia or postpartum eclampsia, both of which require prompt medical evaluation and intervention. Delaying medical attention in such cases can lead to severe complications for the mother. Therefore, it is crucial to prioritize the client's safety and well-being by quickly involving the healthcare provider for further assessment and management.
A patient with a history of chronic liver disease presents with bruising, petechiae, and mucosal bleeding. Laboratory tests reveal prolonged prothrombin time (PT) and activated partial thromboplastin time (aPTT) with decreased platelet count. Which of the following conditions is most likely to cause these findings?
- A. Immune thrombocytopenic purpura (ITP)
- B. Disseminated intravascular coagulation (DIC)
- C. Hemophilia A
- D. Von Willebrand disease
Correct Answer: B
Rationale: Disseminated intravascular coagulation (DIC) is a condition characterized by widespread activation of coagulation leading to both thrombosis and hemorrhage. In patients with chronic liver disease, especially in the setting of advanced cirrhosis, DIC can develop due to factors such as decreased synthesis of coagulation factors and impaired clearance of activated clotting factors. The patient in this scenario presents with signs of both abnormal bleeding (bruising, petechiae, mucosal bleeding) and laboratory findings consistent with DIC, including prolonged prothrombin time (PT) and activated partial thromboplastin time (aPTT) along with decreased platelet count.
A patient presents with severe headache, blurred vision, and fatigue. Laboratory tests reveal elevated white blood cell count, thrombocytosis, and presence of JAK2 V617F mutation. Which of the following conditions is most likely to cause these findings?
- A. Polycythemia vera
- B. Essential thrombocythemia
- C. Chronic myeloid leukemia (CML)
- D. Myelofibrosis
Correct Answer: B
Rationale: The patient's presentation of severe headache, blurred vision, and fatigue, along with the laboratory findings of elevated white blood cell count, thrombocytosis, and JAK2 V617F mutation, are characteristic of essential thrombocythemia. This is a myeloproliferative neoplasm characterized by the clonal proliferation of megakaryocytes, leading to an increased platelet count. The JAK2 V617F mutation is commonly found in essential thrombocythemia and other myeloproliferative disorders. The symptoms of essential thrombocythemia can be related to the increased blood viscosity and risk of thrombosis due to the elevated platelet count. Polycythemia vera would present with elevated red blood cell count, hemoglobin, and hematocrit, along with other features such as pruritus after a hot bath. Chronic myeloid leukemia (CML