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What is the pharmacological action of metformin?
- A. Biguanides
- B. Benzodiazepines
- C. Nitrates
- D. Digitalis glycosides
Correct Answer: A
Rationale: Metformin belongs to the class of medications known as biguanides. Biguanides work by decreasing glucose production in the liver and also improving insulin sensitivity in the muscles, helping to lower blood sugar levels in patients with type 2 diabetes. Additionally, metformin can also reduce glucose absorption in the intestines and increase glucose uptake in peripheral tissues. Its main pharmacological action is to improve glycemic control and reduce hyperglycemia in patients with diabetes.
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Alcoholic or hydroalcoholic solution of volatile substances
- A. decoction
- B. fluid extract
- C. solution
- D. spirits
Correct Answer: D
Rationale: A spirit is an alcoholic or hydroalcoholic solution of volatile substances obtained by distillation. It is commonly used in the production of alcoholic beverages and in the pharmaceutical industry for preparing tinctures and extracts. Spirits are characterized by their high alcohol content and ability to extract and preserve the properties of the substances they are derived from. Decoction is a method of extracting compounds from plants using boiling water, fluid extract is a concentrated liquid extract of a substance, solution refers to a homogeneous mixture of substances, and syrup is a thick, sweet liquid usually made by dissolving sugar in water.
What is the pharmacological action of meç€æ˜€ormin?
- A. Biguanides
- B. Benzodiazepines
- C. Nitrates
- D. Digitalis glycosides
Correct Answer: A
Rationale: Metformin belongs to the class of medications known as biguanides. Biguanides work primarily by decreasing glucose production in the liver and increasing insulin sensitivity in peripheral tissues, such as muscles. They also help improve glucose uptake and utilization by cells, leading to better control of blood sugar levels. Metformin is commonly used to treat type 2 diabetes mellitus and can also be used in the management of polycystic ovary syndrome (PCOS).
The nurse notes in the patient™s medication orders that the patient will be taking ibutilide (Corvert). Based on this finding, the nurse interprets that the patient has which disorder?
- A. Ventricular ectopy
- B. Atrial fibrillation
- C. Supraventricular tachycardia
- D. Bradycardia
Correct Answer: B
Rationale: Ibutilide (Corvert) is a medication commonly used to treat atrial fibrillation, a type of irregular heart rhythm that originates in the heart's upper chambers (atria). It works by restoring normal heart rhythm in patients with atrial fibrillation. Therefore, the nurse notes the use of ibutilide in the patient's medication orders, indicating that the patient has atrial fibrillation.
A patient in the outpatient oncology clinic complains of fatigue after receiving chemotherapy. Which initial nursing intervention will be most appropriate?
- A. Assess for other factors contributing to her fatigue, such as trouble sleeping.
- B. Encourage a high-protein, high-calorie diet, and design it with the patient.
- C. Refer the patient to a physical therapist to develop a strenuous exercise program.
- D. Encourage the patient to sleep as much as possible during the day to ease fatigue.
Correct Answer: A
Rationale: Fatigue is a common side effect of chemotherapy and can be caused by various factors, including anemia, poor nutrition, sleep disturbances, or psychological stress. The nurse's first step should be to assess for underlying causes of fatigue, such as trouble sleeping, anemia, or depression. Once the cause is identified, appropriate interventions can be implemented, such as dietary changes, sleep hygiene strategies, or treatment for anemia. Encouraging excessive daytime sleep or strenuous exercise without assessment may worsen fatigue or lead to other complications.
Prototype of narcotic analgesic agents:
- A. morphine
- B. codeine
- C. heroin
- D. meperidine
Correct Answer: A
Rationale: Morphine is the prototype of narcotic analgesic agents. It is a strong opioid analgesic that is commonly used for the relief of severe pain. Morphine acts on the central nervous system to reduce the perception of pain and is often used in medical settings, such as hospitals, to manage post-operative pain or pain associated with certain medical conditions like cancer. Other opioids, such as codeine, heroin, meperidine, and oxycodone, are derived from or related to morphine but may have different or varying levels of potency, side effects, and addiction potential.