The nurse is caring for a school-aged child with Burkitt lymphoma. A review of the child's laboratory results reveal serum calcium 8.1 mg/dL (1.9 mmol/L), serum potassium 6.1 mEq/L (6.1 mmol/L), and serum phosphorus 5.9 mg/dL (3.6 mmol/L). Which pathophysiological process is associated with the child's laboratory results?

Reference range:

Total Calcium [8.8 to 10.8 mg/dL (2.2 to 2.7 mmol/L)]

Potassium [3.4 to 4.7 mEq/L (3.4 to 4.7 mmol/L)]

Total Phosphorus [4.5 to 6.5 mg/dL (1.45 to 2.1 mmol/L)]

Wilm's tumor.

Tumor lysis syndrome.

Superior vena cava syndrome.

Hyperleukocytosis

Answer and Explanation

The Correct Answer is B

Tumor lysis syndrome (TLS) is a potentially life-threatening oncologic emergency characterized by the rapid release of intracellular contents into the bloodstream following the destruction of cancer cells. This release can lead to metabolic disturbances, including hyperkalemia, hyperphosphatemia, hyperuricemia, and hypocalcemia. Here's how the child's laboratory results are indicative of tumor lysis syndrome:

A) Wilm's tumor:

Wilms tumor is a type of kidney cancer that primarily affects children. However, it typically does not cause the metabolic disturbances seen in tumor lysis syndrome. Laboratory abnormalities in Wilms tumor are generally related to renal dysfunction and may include hematuria and proteinuria.

B) Tumor lysis syndrome:

Correct. Tumor lysis syndrome occurs when chemotherapy or radiation therapy causes a rapid breakdown of cancer cells, leading to the release of intracellular contents such as potassium, phosphorus, and uric acid into the bloodstream. The elevated potassium and phosphorus levels seen in the child's laboratory results are consistent with tumor lysis syndrome. Hyperkalemia (elevated potassium) and hyperphosphatemia (elevated phosphorus) are common metabolic disturbances in tumor lysis syndrome.

C) Superior vena cava syndrome:

Superior vena cava syndrome occurs when the superior vena cava, a major vein that carries blood from the upper body to the heart, becomes partially or completely obstructed. This obstruction can lead to symptoms such as facial swelling, dyspnea, and dilated neck veins. While superior vena cava syndrome may occur in cancer patients, it does not typically cause the metabolic disturbances seen in the child's laboratory results.

D) Hyperleukocytosis:

Hyperleukocytosis refers to an extremely high white blood cell count, which can occur in leukemia. While leukemia can lead to metabolic abnormalities, the child's laboratory results, particularly the elevated potassium and phosphorus levels, are more indicative of tumor lysis syndrome than hyperleukocytosis.

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Correct Answer is B

Explanation

A) Elevation in blood pressure:

While elevation in blood pressure could potentially cause discomfort at the arterial line insertion site, it is not the most likely physiological effect to induce sudden pain in this scenario. Blood pressure elevation would typically cause generalized symptoms rather than localized pain at the insertion site.

B) Vasospasm at insertion site:

Correct. Vasospasm refers to the sudden constriction of blood vessels, leading to reduced blood flow. It can occur in response to arterial puncture or manipulation during arterial line insertion, resulting in sudden pain at the insertion site.

C) Clot in the arterial catheter:

A clot in the arterial catheter could potentially cause obstruction and affect blood flow, but it is less likely to induce sudden pain at the insertion site unless there is associated ischemia or tissue damage.

D) Air lock in the transducer:

An air lock in the transducer could disrupt pressure monitoring but is not typically associated with sudden pain at the insertion site. It may lead to inaccurate pressure readings rather than localized pain.

A. Lipase. B. Myoglobinuria. C. White blood count (WBC). D. Bilirubin.

Correct Answer is A

Explanation

A) Lipase:

Correct. Lipase is an enzyme produced by the pancreas that aids in the digestion of fats. Elevated levels of lipase in the blood can indicate pancreatic damage or inflammation, such as that which may occur due to trauma like a gunshot wound to the abdomen. Pancreatic injury can lead to leakage of enzymes into the bloodstream, resulting in elevated serum lipase levels. Monitoring lipase levels helps assess pancreatic function and detect injury or disease.

B) Myoglobinuria:

Myoglobinuria refers to the presence of myoglobin, a protein found in muscle cells, in the urine. It is often associated with muscle injury or breakdown, such as rhabdomyolysis. While abdominal trauma may result in muscle injury, myoglobinuria is not specific to pancreatic damage and is more indicative of muscle-related injury or conditions.

C) White blood count (WBC):

Elevated white blood cell count (WBC), or leukocytosis, is a non-specific marker of inflammation or infection. While it may occur in response to tissue injury, including pancreatic injury, it is not specific to pancreatic damage and can be elevated due to various other factors, such as surgical stress, infection, or inflammation.

D) Bilirubin:

Bilirubin is a pigment produced during the breakdown of red blood cells and is excreted by the liver. Elevated levels of bilirubin may indicate liver dysfunction or obstruction of the bile ducts, but they are not specific to pancreatic damage. While pancreatic injury can lead to obstruction of the bile ducts in some cases, monitoring bilirubin levels alone is not sufficient to diagnose pancreatic damage.

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Naxlex Comprehensive Predictor Exams

After the nurse obtains a blood sample from a client's right radial arterial client reports a sudden onset of pain at the arterial line insertion site. The nurse recognizes which physiological effect may be inducing the sudden pain?

Correct Answer is B

Explanation

The nurse is assessing a client with a gunshot wound to the abdomen who is admitted to the intensive care unit (ICU) following a 3-hour surgical procedure. Which elevated laboratory value indicates pancreatic damage?

Correct Answer is A

Explanation

A client with chronic osteoarthritis is troubled by knee pain. Which pathophysiological process is contributing to the pain?

Which physiological process supports the exchange of blood concentrations across a semipermeable membrane in the hemodialysis?

The nurse is caring for an immobilized client who is at risk for breakdown in skin integrity. Which pathophysiological process should the nurse note early in the development of a pressure injury?

The nurse is caring for an older client who is on complete bed rest. The nurse notes hematuria when the client suddenly reports excruciating pain that radiates from the back to the groin. Which pathological process has contributed to the client's clinical presentation of a possible renal calculi?

When planning care for a client who is diagnosed with a large abdominal aortic aneurysm (AAA), the nurse should carefully monitor for which signs and symptoms?

A postmenopausal client presenting to the clinic with describing abdominal pain and an episode of unexplained vaginal Nearing receives a Pap smear (Papanicolaou test). Which medical history information should the nurse expect places the client at most risk for developing cervical cancer,

When developing a teaching plan for a client with peripheral artery disease, the nurse should explain that intermittent claudication occurs as the result of which underlying pathophysiology?