A client who has been on a mechanical ventilator for three days develops a fever of 101 degrees Fahrenheit green sputum, and right lower lobe crackles. The nurse contacts the physician regarding possible development of which complication?
Ventilator -associated pneumonia
Pulmonary embolism
Stress ulcer
Pneumothorax
The Correct Answer is A
A) Ventilator-associated pneumonia (VAP):
Ventilator-associated pneumonia (VAP) is a type of pneumonia that develops in patients who have been on mechanical ventilation for more than 48 hours. It is a common and serious complication in critically ill patients on ventilators. Symptoms such as fever, green sputum, and right lower lobe crackles are indicative of a respiratory infection, which, in this case, is most likely VAP. VAP typically presents with signs of infection such as elevated temperature, purulent sputum, and new infiltrates on a chest x-ray, in addition to lung crackles.
B) Pulmonary embolism (PE):
Although pulmonary embolism (PE) can cause symptoms like tachypnea, chest pain, and dyspnea, it does not typically cause a fever, green sputum, or localized crackles in the lungs. PE is usually characterized by sudden onset of respiratory distress, often accompanied by hemoptysis or chest pain, and would not typically present with the localized findings in the lower lobe (e.g., crackles).
C) Stress ulcer:
Stress ulcers can occur in critically ill patients, especially those on mechanical ventilation, due to the stress response and reduced blood flow to the stomach. However, stress ulcers typically cause gastrointestinal symptoms, such as melena (black, tarry stools) or hematemesis (vomiting blood).
D) Pneumothorax:
A pneumothorax occurs when air accumulates in the pleural space, causing a collapse of the lung. It can lead to symptoms such as sudden chest pain, dyspnea, and diminished breath sounds on one side of the chest. However, it would not typically cause fever, green sputum, or localized crackles.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A) Clubbing of the fingers
Clubbing of the fingers is typically associated with chronic hypoxia, often due to conditions like chronic obstructive pulmonary disease (COPD), congenital heart defects, or chronic respiratory disorders. While mitral valve stenosis can lead to pulmonary congestion and sometimes hypoxia, clubbing is not a hallmark finding of mitral valve stenosis.
B) A heart murmur
Mitral valve stenosis is commonly characterized by a heart murmur. The stenosis (narrowing) of the mitral valve obstructs blood flow from the left atrium to the left ventricle, leading to turbulent blood flow. This creates a characteristic diastolic murmur (a low-pitched, rumbling murmur heard best at the apex of the heart with the patient in the left lateral decubitus position).
C) Barrel chest
A barrel chest is more commonly associated with chronic obstructive pulmonary disease (COPD), emphysema, and other conditions that cause long-term hyperinflation of the lungs. It is not a typical finding in mitral valve stenosis. The shape of the chest may change over time in patients with severe left-sided heart failure, but this is not a primary or direct consequence of mitral valve stenosis.
D) Bradycardia
Bradycardia (a slow heart rate) is not a characteristic finding of mitral valve stenosis. In fact, mitral valve stenosis can lead to increased heart rates due to reduced cardiac output and compensatory mechanisms. As the left atrium becomes increasingly distended from the obstruction, atrial fibrillation (a rapid, irregular heartbeat) is common in mitral valve stenosis.
Correct Answer is D
Explanation
A) Respiratory acidosis:
Respiratory acidosis occurs when there is an accumulation of carbon dioxide (CO2) in the blood, leading to a decrease in pH. In the given blood gas values, the PaCO2 is 28 mmHg, which is lower than the normal range (35-45 mmHg), indicating that CO2 is being exhaled more than usual, not accumulating.
B) Metabolic acidosis:
Metabolic acidosis results from a decrease in bicarbonate (HCO3-) or an increase in acid in the body. However, in the provided values, the bicarbonate (HCO3-) is normal at 24 mEq/L, and the pH is elevated at 7.51, indicating alkalosis rather than acidosis
C) Metabolic alkalosis:
Metabolic alkalosis occurs when there is an increase in bicarbonate levels or excessive loss of acids, often associated with vomiting or diuretic use. However, in this case, the bicarbonate level (HCO3-) is normal, and the pH is more consistent with alkalosis due to respiratory factors, not metabolic causes.
D) Respiratory alkalosis:
Respiratory alkalosis occurs when there is excessive exhalation of CO2, leading to a rise in blood pH (alkalosis). The pH is 7.51, which is above the normal range (7.35-7.45), indicating alkalosis. Additionally, the PaCO2 is low at 28 mmHg, which suggests that the client is hyperventilating and exhaling too much CO2, confirming respiratory alkalosis as the correct interpretation.
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