The nurse is reviewing lab results for a client receiving chemotherapy for the treatment of cancer. The nurse notes the carcinoembryonic antigen (CEA) was previously 50 ng/ mL and is now 10 ng/mL (normal range 0-2.5 ng/mL) The nurse is aware this finding indicates the:

treatment plan will need to be changed to achieve the desired effect

cancer treatment is having, the desired effect on killing cancer cells

client is at greater risk for tumor lysis syndrome

cancer has increased size and metastatic sites

Answer and Explanation

The Correct Answer is B

A) Treatment plan will need to be changed to achieve the desired effect:
The decrease in the carcinoembryonic antigen (CEA) levels from 50 ng/mL to 10 ng/mL suggests that the cancer is responding to the current treatment, not that the treatment plan needs to be changed. A drop in CEA levels typically indicates a positive response to treatment, such as chemotherapy, in reducing the number or size of cancer cells.

B) Cancer treatment is having the desired effect on killing cancer cells:
Carcinoembryonic antigen (CEA) is a tumor marker that is often elevated in individuals with certain cancers, particularly colorectal cancer. A decrease in CEA levels, as noted in this case (from 50 ng/mL to 10 ng/mL), usually signifies that the treatment is successfully targeting the cancer and reducing the tumor burden. This drop suggests that the chemotherapy is effectively killing cancer cells and reducing the size or activity of the tumor.

C) Client is at greater risk for tumor lysis syndrome:
Tumor lysis syndrome typically occurs when large numbers of cancer cells die rapidly, releasing their intracellular contents into the bloodstream, which can lead to metabolic disturbances like hyperkalemia, hyperphosphatemia, and renal failure. It is more common in aggressive hematologic cancers, such as leukemia or lymphoma, and typically presents with a rapid rise in tumor marker levels, not a decrease.

D) Cancer has increased size and metastatic sites:
An increase in tumor size or the development of metastatic sites would typically result in an increase in CEA levels, not a decrease. Since CEA levels have dropped, it is more likely that the cancer is shrinking or responding to the current treatment. This finding is more indicative of a positive response rather than disease progression.

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Correct Answer is ["A","D","E"]

Explanation

A) If there is a QRS complex after each P wave:
This is an important consideration when identifying a cardiac rhythm. The P wave represents atrial depolarization, and the QRS complex represents ventricular depolarization. In a normal sinus rhythm, every P wave is followed by a QRS complex, which confirms that the impulse originating in the SA node is being conducted properly through the atrioventricular (AV) node and into the ventricles. The presence of a QRS after every P wave helps confirm normal conduction and rhythm.

B) The rate using only a 3-second strip:
While the heart rate is an essential part of the rhythm assessment, using only a 3-second strip is not the most accurate method for determining the rate. Typically, a 6-second strip is used to estimate the rate, multiplying the number of R-R intervals by 10 to obtain the heart rate. A 3-second strip can be used for quick estimates but may lead to inaccurate calculations of the heart rate.

C) The duration of the U waves:
The U wave is often a normal variant seen in the ECG and is not always present. If it is visible, its duration is typically not a primary focus in rhythm interpretation unless there are concerns about electrolyte imbalances, such as hypokalemia. The U wave is not a core factor to consider when identifying the overall rhythm.

D) If the P waves are present:
The presence of P waves is important for identifying the rhythm, particularly when differentiating between sinus rhythms (normal) and non-sinus rhythms (such as atrial arrhythmias). In normal sinus rhythm, P waves should be present, reflecting atrial depolarization initiated by the SA node. The absence of P waves can indicate atrial fibrillation, atrial flutter, or other arrhythmias.

E) If the P-P and R-R distances are equal:
This is crucial in identifying a regular rhythm. The P-P interval refers to the distance between successive P waves (atrial depolarization), and the R-R interval refers to the distance between successive R waves (ventricular depolarization). In normal sinus rhythm or regular rhythms, both the P-P and R-R intervals should be equal, indicating that the atrial and ventricular rhythms are consistent. If they are unequal, it suggests an irregular rhythm (e.g., atrial fibrillation).

A. be placed in isolation to prevent radiation exposure to others B. avoid consuming any food or fluids for 24 hours prior to the treatment C. avoid all physical activity for six weeks after the treatment D. discontinue all other medications for a week before the treatment

Correct Answer is A

Explanation

A) Be placed in isolation to prevent radiation exposure to others:
Radioactive iodine (I-131) is commonly used to treat thyroid cancer because it targets and destroys thyroid tissue, including any remaining cancerous cells. This treatment involves the administration of a radioactive substance that can be excreted through saliva, urine, and sweat. To minimize radiation exposure to others, patients are often placed in isolation, particularly in a hospital setting, for a period following administration.

B) Avoid consuming any food or fluids for 24 hours prior to the treatment:
While it’s essential for patients to follow specific instructions regarding food and fluid intake, such as avoiding certain foods or fluids that may interfere with absorption or increase the risk of side effects (like dairy products), the patient does not need to avoid all food and fluids for 24 hours after receiving radioactive iodine.

C) Avoid all physical activity for six weeks after the treatment:
While some precautions, such as avoiding close contact with others for a short period of time, may be necessary, avoiding physical activity for six weeks is not usually required. Patients may be advised to take it easy during the initial recovery phase, but they can typically resume normal activities once the initial isolation period is complete and their radiation exposure is below safety thresholds.

D) Discontinue all other medications for a week before treatment:
However, certain medications that affect thyroid function (such as thyroid hormones or antithyroid medications) may need to be adjusted or stopped before treatment to ensure the effectiveness of the radioactive iodine. The specifics would depend on the patient’s condition and the healthcare provider’s instructions.

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The nurse is reviewing lab results for a client receiving chemotherapy for the treatment of cancer. The nurse notes the carcinoembryonic antigen (CEA) was previously 50 ng/ mL and is now 10 ng/mL (normal range 0-2.5 ng/mL) The nurse is aware this finding indicates the:

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Naxlex Comprehensive Predictor Exams

To properly identify a cardiac rhythm, the nurse will obtain the following factors. (SELECT ALL THAT APPLY)

Correct Answer is ["A","D","E"]

Explanation

The nurse should implement which safety consideration for a patient when administering oral radioactive iodine for thyroid cancer? The patient should:

Correct Answer is A

Explanation

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