A 45-year-old patient presents to the trauma unit after a gunshot wound (GSW) to the abdomen. The patient has a temperature of 92 degrees Fahrenheit, is restless and confused, and has large amount of blood noted from the nasogastric (NG) tube as well as from the indwelling urinary catheter. Which additional assessment finding likely causes death within the first 24 hours following this injury?
Heart rate of 130 beats per minute
PH of 7.21 (normal 7.35-7.45)
Serum potassium 5.7 mEq/L (normal 3,5-5.3)
Platelet count 200,000 (normal 150,000-450,000)
The Correct Answer is B
A) Heart rate of 130 beats per minute
A heart rate of 130 beats per minute is tachycardia, which is often a compensatory response to injury, particularly in cases of trauma, blood loss, or shock. It is common in the initial phase after trauma as the body attempts to compensate for decreased blood volume or oxygen delivery. However, tachycardia alone is not typically fatal in the immediate post-injury period and can often be managed.
B) pH of 7.21 (normal 7.35–7.45)
A pH of 7.21 indicates acidosis, which is life-threatening and typically arises from shock, blood loss, or severe trauma. Acidosis occurs when the body is unable to compensate for lactic acid or other metabolic byproducts that accumulate due to insufficient oxygen delivery to tissues. In the case of a gunshot wound to the abdomen, there is a high risk of internal bleeding, hypoperfusion, and hypoxia, all of which can lead to metabolic acidosis. Severe acidosis can cause organ failure, particularly affecting the heart, kidneys, and brain.
C) Serum potassium 5.7 mEq/L (normal 3.5–5.3)
A serum potassium of 5.7 mEq/L is elevated, but it is moderately high and not typically life-threatening unless it reaches much higher levels (e.g., >6.0 mEq/L), which can cause cardiac arrhythmias. Elevated potassium can occur due to cellular injury (e.g., muscle trauma or rhabdomyolysis), but it would need to be corrected to prevent complications like arrhythmias.
D) Platelet count 200,000 (normal 150,000–450,000)
A platelet count of 200,000 is within the normal range (150,000–450,000) and does not indicate a problem with coagulation. The blood loss and the NG tube hemorrhage mentioned in the scenario suggest that the patient may be at risk for bleeding, but a platelet count in the normal range suggests that the body’s ability to form clots is likely intact.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A) 3% Normal Saline:
Elevated ICP can lead to a life-threatening condition known as cerebral herniation, and it often triggers the Cushing’s triad—widened pulse pressure, bradycardia, and irregular respirations, all of which the nurse has noted. Hypertonic saline (such as 3% Normal Saline) is commonly used to manage increased ICP because it creates an osmotic gradient that draws fluid out of the brain tissue, reducing cerebral edema and lowering ICP. The goal is to reduce swelling and prevent further brain damage.
B) Nitroprusside:
Nitroprusside is a potent vasodilator that is used to treat hypertension and reduce afterload in conditions like heart failure or aortic dissection. However, in this case, nitroprusside is contraindicated because it could cause a drop in systemic blood pressure, which would worsen cerebral perfusion in a patient with elevated ICP.
C) Norepinephrine:
Norepinephrine is a vasopressor used to treat hypotension by increasing systemic vascular resistance and blood pressure. Although norepinephrine may be used to support blood pressure in critically ill patients, in this context of elevated ICP, the priority is to reduce ICP, not to increase blood pressure further. Increasing the systemic vascular resistance with norepinephrine could exacerbate ICP by increasing the volume of blood in the cranium
D) Furosemide:
Furosemide is a loop diuretic that can reduce fluid volume and help treat conditions like edema or heart failure. While furosemide can reduce overall fluid volume, it is not typically used to manage elevated ICP in this context. Diuretics like furosemide may have a role in managing cerebral edema, but they are not as effective as hypertonic saline in rapidly reducing ICP.
Correct Answer is D
Explanation
A) Reduce the patient's anxiety:
While reducing anxiety is an important aspect of patient care, particularly in emergency situations, it is not the priority when life-threatening conditions may be present. Anxiety reduction can be addressed after ensuring that the patient’s more critical physiological needs (such as adequate oxygenation and circulation) are met.
B) Assure adequate circulating volume:
Maintaining adequate circulating volume is important, especially in trauma cases where blood loss is a concern. However, adequate oxygenation takes precedence over circulating volume in this scenario because without proper oxygenation, the patient’s vital organs and tissues may suffer from hypoxia, leading to further complications.
C) Decrease the patient's chest pain:
Chest pain following a motor vehicle accident (MVA) can be a symptom of serious injuries, such as rib fractures, pneumothorax, or even a cardiac contusion. While relieving pain is important for comfort and overall well-being, the priority in the immediate post-trauma phase is to ensure that the patient is receiving adequate oxygen.
D) Maintain adequate oxygenation:
The most critical concern after trauma, especially in a case involving chest impact, is ensuring that the patient is adequately oxygenated. Chest trauma can cause injuries to the lungs or pleural space (e.g., pneumothorax, hemothorax), leading to compromised oxygen exchange. The priority is to assess and maintain the patient's airway, breathing, and oxygenation first.
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