Critical Care Concepts Quiz

A patient presents with hypotension, tachycardia, and cool, clammy skin after a severe car accident. Which type of shock is most likely?

• Cardiogenic shock

• Hypovolemic shock

• Neurogenic shock

• Septic shock

Answer explanation

The patient's hypotension, tachycardia, and cool, clammy skin suggest hypovolemic shock, likely due to blood loss from the car accident. This type of shock is characterized by decreased blood volume leading to inadequate perfusion.

Which of the following is the most appropriate initial intervention for a patient with suspected increased intracranial pressure (ICP)?

• Place the patient in Trendelenburg position

• Elevate the head of the bed to 30 degrees

• Administer oral fluids rapidly

• Apply a warm compress to the head

Answer explanation

Elevating the head of the bed to 30 degrees helps reduce ICP by promoting venous drainage from the brain, making it the most appropriate initial intervention for suspected increased intracranial pressure.

A patient with a deep partial-thickness burn on the anterior surface of the right arm and anterior trunk requires fluid resuscitation. Using the rule of 9s, what percentage of total body surface area (TBSA) is burned?

• 9%

• 18%

• 22.5%

• 27%

Answer explanation

Using the rule of 9s, the anterior trunk accounts for 18% and the anterior surface of one arm for 9%. Therefore, 18% + 9% = 27%. However, since it's a deep partial-thickness burn, we consider 22.5% for fluid resuscitation.

Which of the following is a common cause of prerenal acute kidney injury (AKI)?

• Glomerulonephritis

• Hypovolemia

• Nephrotoxic drugs

• Urinary tract obstruction

Answer explanation

Hypovolemia is a common cause of prerenal AKI as it leads to decreased blood flow to the kidneys, resulting in impaired kidney function. In contrast, glomerulonephritis, nephrotoxic drugs, and urinary tract obstruction are causes of intrinsic or postrenal AKI.

A patient with type 1 diabetes is found unconscious with a blood glucose of 35 mg/dL. What is the priority nursing intervention?

• Administer subcutaneous insulin

• Give 50% dextrose IV

• Start a normal saline infusion

• Monitor urine output

Answer explanation

In cases of severe hypoglycemia, such as a blood glucose of 35 mg/dL, the priority is to quickly raise blood sugar levels. Administering 50% dextrose IV provides immediate glucose, making it the correct intervention.

Which of the following is the best indicator for initiating dialysis in a patient with acute kidney injury?

• Blood pressure of 140/90 mmHg

• Serum potassium of 6.5 mEq/L

• Urine output of 1,000 mL/day

• Hemoglobin of 12 g/dL

Answer explanation

The best indicator for initiating dialysis in acute kidney injury is a serum potassium level of 6.5 mEq/L, as hyperkalemia can lead to life-threatening cardiac complications, necessitating dialysis.

Which of the following burn types requires immediate referral to a burn center?

• Superficial burn on the hand

• Full-thickness burn on the face

• Superficial partial-thickness burn on the leg

• Deep partial-thickness burn on the back

Answer explanation

A full-thickness burn on the face is critical due to the risk of airway compromise and cosmetic concerns, necessitating immediate referral to a burn center. Other burn types listed are less severe and can be managed in a different setting.

A patient is classified as ESI level 1 in the Emergency Severity Index (ESI) triage system. What does this indicate?

• The patient requires immediate life-saving intervention

• The patient can wait up to 2 hours for care

• The patient has minor injuries

• The patient needs only a prescription refill

Answer explanation

ESI level 1 indicates the patient requires immediate life-saving intervention, as they are in a critical condition that cannot wait for care.

Which of the following is a typical finding in a patient with neurogenic shock?

• Bradycardia and warm, dry skin

• Tachycardia and cool, clammy skin

• Hypertension and diaphoresis

• Tachypnea and cyanosis

Answer explanation

In neurogenic shock, the autonomic nervous system is disrupted, leading to bradycardia (slow heart rate) and vasodilation, which causes warm, dry skin. This contrasts with other shock types that typically present with tachycardia and cool, clammy skin.

Which hormone replacement is most appropriate for a patient with Addison’s disease?

• Insulin

• Hydrocortisone

• Levothyroxine

• Desmopressin

Answer explanation

Hydrocortisone is the most appropriate hormone replacement for Addison's disease, as it replaces the cortisol that the adrenal glands do not produce. Insulin, levothyroxine, and desmopressin are not indicated for this condition.

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