Nursing Elites

1. A healthcare professional reviews the blood gas results of a client in respiratory distress. The pH is 7.32, and the PCO2 is 50 mm Hg. Which of the following acid-base imbalances does the professional recognize in these findings?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Respiratory alkalosis

Correct answer: C

Rationale: In respiratory acidosis, the pH is low (<7.35) and the PCO2 is increased (>45 mm Hg). These findings indicate that the client is experiencing respiratory acidosis, a condition where there is an excess of carbon dioxide in the blood due to inadequate ventilation, commonly seen in respiratory distress. Metabolic acidosis (Choice A) is characterized by a low pH and decreased bicarbonate levels, which is not the case in this scenario. Metabolic alkalosis (Choice B) is associated with a high pH and increased bicarbonate levels. Respiratory alkalosis (Choice D) is marked by a high pH and decreased PCO2, opposite to the values presented in the blood gas results of this client.

2. In a patient with deep vein thrombosis (DVT), which of the following symptoms would be expected?

• A. Chest pain.
• B. Shortness of breath.
• C. Coughing up blood.
• D. Cyanosis.

Correct answer: B

Rationale: Shortness of breath is a common symptom of deep vein thrombosis (DVT) due to the risk of a pulmonary embolism. DVT occurs when a blood clot forms in a deep vein, usually in the legs. If a portion of the clot breaks loose and travels to the lungs, it can cause a pulmonary embolism, leading to symptoms like shortness of breath. Chest pain is more commonly associated with conditions like a heart attack or pulmonary embolism itself. Coughing up blood is a symptom more indicative of conditions such as pulmonary embolism or lung cancer. Cyanosis, which is a bluish discoloration of the skin or mucous membranes due to poor oxygenation, can be seen in severe cases of pulmonary embolism but is not a typical symptom of DVT.

3. Which of the following is a key symptom of myocardial infarction (MI)?

• A. Chest pain.
• B. Shortness of breath.
• C. Nausea.
• D. Fatigue.

Correct answer: A

Rationale: The correct answer is A: Chest pain. Chest pain is a hallmark symptom of myocardial infarction (MI) due to inadequate blood flow to the heart muscle. This pain can be severe, crushing, or squeezing, and may radiate to the left arm, jaw, or back. Shortness of breath (choice B), nausea (choice C), and fatigue (choice D) can accompany MI but are not as specific or characteristic as chest pain in diagnosing this condition. Therefore, chest pain is the primary symptom to recognize for suspected MI.

4. Which of the following conditions is the most significant risk factor for the development of type 2 diabetes mellitus?

• A. Cigarette smoking.
• B. High-cholesterol diet.
• C. Obesity.
• D. Hypertension.

Correct answer: C

Rationale: Obesity is the most significant risk factor for developing type 2 diabetes mellitus due to its role in insulin resistance. Excess body fat, especially around the abdomen, leads to increased production of inflammatory markers and hormones that can cause insulin resistance. While cigarette smoking, high-cholesterol diet, and hypertension can contribute to health issues, they are not as directly linked to the development of type 2 diabetes mellitus as obesity.

5. A client has lost a significant amount of blood due to complications during surgery. What parameter does the nurse recognize as the earliest indication of new decreases in fluid volume?

• A. Pulse rate
• B. Blood pressure
• C. Pulmonary artery systolic pressure
• D. Pulmonary artery end-diastolic pressure

Correct answer: A

Rationale: The earliest indication of new decreases in fluid volume is often recognized by an increase in pulse rate. Cardiac output is influenced by circulating blood volume, heart pumping action, and vascular tone. As fluid volume decreases, the body compensates by increasing the pulse rate. The formula for cardiac output is pulse rate multiplied by stroke volume. An elevated pulse rate helps maintain blood pressure with minor volume depletion. Pulmonary artery systolic pressure and pulmonary artery end-diastolic pressure, obtained through a pulmonary artery catheter, provide insights into pulmonary artery and left ventricle pressures at the end of diastole. These parameters are not the earliest indicators of new decreases in fluid volume compared to pulse rate.

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