A patient has been put on Contact Precautions. The patient’s family is extremely apprehensive about visiting due to fear of being “contaminated” by the patient. What is the best course of action for the nurse?

Choice A rationale:
Hourly neurologic checks are not the priority intervention for a client with hypokalemia. While hypokalemia can cause neuromuscular changes, such as muscle weakness and cramps, these are not typically the most immediate or life-threatening concerns.
Cardiac monitoring is crucial to detect and manage potentially fatal arrhythmias promptly.

Neurologic checks can be implemented as part of the overall assessment and monitoring plan, but they should not supersede cardiac monitoring in this situation.
Choice C rationale:
Seizure precautions are not routinely initiated for clients with hypokalemia unless there is a specific seizure history or other neurological concerns.
Hypokalemia can cause neuromuscular irritability, but it does not directly trigger seizures in most cases. The priority remains cardiac monitoring due to the significant risk of arrhythmias.
Choice D rationale:
Administering oxygen via face mask might be considered if the client exhibits respiratory distress or hypoxemia. However, it's not the immediate priority intervention for hypokalemia without accompanying respiratory compromise.
Hypokalemia primarily affects cardiac conduction, necessitating prompt cardiac monitoring.
Oxygen therapy can be administered if clinically indicated, but it does not address the underlying electrolyte imbalance.
Rationale for the correct answer, B:
Initiating cardiac monitoring is the most crucial nursing action for a client with a serum potassium level of 2.8 mEq/L. Here's a detailed explanation:
Hypokalemia's significant cardiac effects:
Potassium is essential for normal cardiac conduction and muscle contraction. Hypokalemia disrupts the electrical activity of the heart, potentially leading to:
Arrhythmias (irregular heartbeats), including potentially fatal ones like ventricular tachycardia or fibrillation. Electrocardiogram (ECG) changes, such as ST segment depression, T wave flattening or inversion, and prominent U waves. Cardiac monitoring's role:
Continuously tracks the heart's electrical activity. Enables early detection of arrhythmias.
Facilitates prompt intervention to prevent life-threatening complications. Specific benefits of cardiac monitoring in hypokalemia:

Allows for early identification and treatment of arrhythmias, potentially preventing cardiac arrest. Guides electrolyte replacement therapy, ensuring appropriate potassium administration.
Assesses the effectiveness of interventions, ensuring the patient's stability.

Choice A rationale:
While advancing age is a significant risk factor for cancer, it is not considered the single biggest risk factor. The risk of developing cancer does increase with age, primarily due to the accumulation of DNA damage over time. This damage can arise from various sources, including exposure to carcinogens, errors in DNA replication, and oxidative stress. With age, the body's ability to repair DNA damage also declines, making cells more susceptible to cancerous changes.
However, it's important to note that cancer can develop at any age, and even younger individuals can be affected if exposed to other significant risk factors.
Choice B rationale:
Exposure to tobacco is widely recognized as the single biggest risk factor for developing cancer. It is estimated to be responsible for about 25-30% of all cancer deaths worldwide.
Tobacco smoke contains over 70 known carcinogens, which are substances that can damage DNA and lead to cancer. These carcinogens can affect various organs in the body, including the lungs, mouth, throat, esophagus, stomach, pancreas, liver, bladder, kidney, cervix, and colon.
The risk of cancer increases with the amount and duration of tobacco use. Even exposure to secondhand smoke can increase the risk of cancer.
Quitting tobacco use is the most effective way to reduce the risk of cancer.
Choice C rationale:
Exposure to occupational chemicals is a known risk factor for certain types of cancer, such as lung cancer, bladder cancer, and leukemia. However, it is not considered the single biggest risk factor for developing cancer overall.
The risk of cancer from occupational chemicals depends on the specific chemical, the level of exposure, and the duration of exposure.
Workplace safety measures, such as using protective equipment and limiting exposure to hazardous chemicals, can help reduce the risk of cancer.
Choice D rationale:
Infection with certain viruses, known as oncoviruses, can increase the risk of developing certain types of cancer. For example, infection with human papillomavirus (HPV) can increase the risk of cervical cancer, and infection with hepatitis B virus (HBV) can increase the risk of liver cancer.
However, oncoviruses are not considered the single biggest risk factor for developing cancer overall. Vaccines are available to protect against some oncoviruses, such as HPV and HBV.