A nurse receives a shift report regarding four clients on a ventilator. Which client should the nurse assess first based on priority?

A client who has requested pain medication and has been noted to have pain.

A client who is being weaned from the ventilator and is currently stable.

A client who has developed respiratory distress and is exhibiting agitation.

A client who is scheduled for a chest x-ray to evaluate ventilator placement.

Answer and Explanation

The Correct Answer is C

Prioritization in critically ill ventilated clients is based on airway, breathing, and circulation (ABCs), with immediate threats to oxygenation taking the highest priority. Clients on mechanical ventilation are at risk for sudden deterioration due to airway obstruction, ventilator malfunction, or worsening respiratory pathology. Signs such as respiratory distress and agitation may indicate hypoxia, hypercapnia, or ventilator asynchrony, all of which require urgent intervention to prevent respiratory failure.

Rationale:
A. A client requesting pain medication is uncomfortable but not in immediate life-threatening distress. Pain management is important in ventilated clients to promote comfort and synchrony with the ventilator, but it does not take priority over acute respiratory compromise. This client can be assessed after stabilization of higher-acuity conditions.

B. A client being weaned from the ventilator and currently stable is not showing signs of acute deterioration. Ventilator weaning is a monitored process, and stability indicates adequate oxygenation and ventilation at this time. This client requires ongoing observation but is not the highest priority compared to those with active respiratory distress.

C. A client with respiratory distress and agitation is the priority because these findings suggest possible hypoxia, ventilator dyssynchrony, or airway compromise. Agitation in ventilated clients is often an early sign of inadequate oxygenation or increased carbon dioxide levels. Immediate assessment is needed to ensure airway patency and ventilator effectiveness to prevent rapid decompensation.

D. A client scheduled for a chest x-ray to evaluate ventilator placement is stable enough to await diagnostic imaging. While confirming tube placement is important, it is not emergent in the absence of clinical signs of distress. Imaging is a routine verification step and does not take priority over acute respiratory compromise.

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Correct Answer is C

Explanation

Tumors are abnormal growths of cells that can be classified as benign or malignant based on their behavior and cellular characteristics. Benign tumors usually grow slowly, remain localized, and have well-differentiated cells that resemble normal tissue. Malignant tumors, on the other hand, show uncontrolled growth, poor differentiation, and the potential to invade nearby tissues and metastasize to distant organs. Understanding these differences is essential for diagnosis, treatment planning, and prognosis.

Rationale:
A. Benign tumors do not spread to distant organs or invade surrounding tissues. They are usually encapsulated, remain confined to their original location, and cause problems mainly by pressure on nearby structures. The ability to invade and metastasize is a defining feature of malignant tumors, not benign growths. Therefore, this statement incorrectly describes benign tumors.

B. Malignant tumors are not typically well-defined or slow-growing. They often have irregular borders, rapid and uncontrolled cell division, and poorly differentiated cells that do not resemble normal tissue. Localized effects with clear boundaries are more characteristic of benign tumors, making this description inaccurate for malignancy.

C. Malignant tumors are marked by rapid growth, abnormal cell structure, and invasion into surrounding tissues. Their cells often show anaplasia, meaning they are poorly differentiated and structurally abnormal compared to healthy cells. They can infiltrate adjacent organs and spread through lymphatic or blood circulation to distant sites, which significantly worsens prognosis.

D. Benign tumors are generally less likely to cause severe systemic symptoms than malignant tumors. Malignant tumors commonly produce systemic effects such as weight loss, fatigue, anemia, and cachexia due to aggressive growth and metastasis. Benign tumors usually cause localized symptoms unless they compress vital organs or produce hormones.

A. To decrease blood pressure B. To improve liver function tests C. To enhance the excretion of ammonia from the body D. To increase sodium levels in the body

Correct Answer is C

Explanation

Hepatic encephalopathy is a neurologic complication of liver dysfunction caused by the accumulation of toxic substances, especially ammonia, in the bloodstream. When the liver is unable to effectively convert ammonia into urea for excretion, ammonia crosses the blood-brain barrier and affects brain function. This can lead to confusion, altered consciousness, and even coma. Lactulose is commonly administered to reduce serum ammonia levels and improve neurologic status.

Rationale:
A. Decreasing blood pressure is not the primary purpose of lactulose in hepatic encephalopathy. Lactulose acts mainly within the gastrointestinal tract and does not function as an antihypertensive medication. Although fluid shifts may occur with excessive diarrhea, blood pressure reduction is not its therapeutic target in this condition.

B. Improving liver function tests is not the direct action of lactulose. The medication does not repair hepatocytes or restore liver enzyme levels such as AST, ALT, or bilirubin. Its benefit is focused on reducing neurotoxic ammonia accumulation rather than reversing the underlying hepatic damage shown in laboratory values.

C. Enhancing the excretion of ammonia from the body is the primary goal of lactulose therapy. Lactulose acidifies the colon, converting ammonia (NH3) into ammonium (NH4+), which cannot be reabsorbed and is excreted in stool. Its laxative effect also decreases intestinal transit time, reducing ammonia production and absorption from the gut.

D. Increasing sodium levels in the body is not the intended use of lactulose. It does not act as an electrolyte replacement therapy and may actually contribute to electrolyte imbalance if excessive diarrhea occurs. Sodium management in liver disease is addressed separately, especially in clients with ascites or fluid retention.

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A nurse receives a shift report regarding four clients on a ventilator. Which client should the nurse assess first based on priority?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which of the following statements best describes the characteristics of malignant tumors compared to benign tumors?

Correct Answer is C

Explanation

What is the primary goal of administering lactulose to a client with hepatic encephalopathy?

Correct Answer is C

Explanation

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